/* ============================================
   FlashSlides - AI Presentation Generator
   Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #f97316;
  --color-background: #0f0f1a;
  --color-surface: #1a1a2e;
  --color-surface-elevated: #252540;
  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: #334155;
  --color-success: #22c55e;
  --color-error: #ef4444;
  --color-warning: #f59e0b;

  --font-primary: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display:
    "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

/* Reset */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================
   Header
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.75rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
  background: var(--color-surface);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* User Menu */
.user-menu {
  position: relative;
}

.user-button {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 6px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: var(--transition-fast);
}

.user-button:hover {
  background: var(--color-surface-elevated);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.user-avatar-placeholder {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
}

.user-name {
  font-weight: 500;
  font-size: 0.875rem;
}

.dropdown-arrow {
  transition: transform var(--transition-fast);
}

.user-menu:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition-fast);
}

.user-menu:hover .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-dropdown-header {
  padding: 16px;
  border-bottom: 1px solid var(--color-border);
}

.user-email {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.user-credits {
  font-size: 0.75rem;
  color: var(--color-primary-light);
  font-weight: 600;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--color-surface-elevated);
  color: var(--color-text);
}

.dropdown-item.logout {
  color: var(--color-error);
}

.dropdown-divider {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 4px 0;
}

/* Hamburger Menu Button */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  padding: 10px;
  margin-left: 0.5rem;
  transition: var(--transition-fast);
}

.hamburger-btn:hover {
  background: var(--color-surface-elevated);
  border-color: var(--color-primary);
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-btn.open .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-btn.open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.open .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation - Full Screen */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background: #0f0f1a;
  z-index: 99999;
  display: none;
  flex-direction: column;
  padding: 1.25rem;
  overflow-y: auto;
  isolation: isolate;
  transform: translateZ(0);
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1.5rem;
  flex-shrink: 0;
  position: relative;
}

.mobile-nav-close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  cursor: pointer;
  color: #f8fafc;
  transition: var(--transition-fast);
  z-index: 2;
}

.mobile-nav-close svg {
  width: 24px;
  height: 24px;
}

.mobile-nav-close:hover {
  background: var(--color-surface-elevated);
  color: var(--color-text);
  border-color: var(--color-primary);
}

/* Mobile User Info */
.mobile-user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  margin-bottom: 1.5rem;
  flex-shrink: 0;
}

.mobile-user-avatar {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 50%;
  object-fit: cover;
}

.mobile-user-avatar-placeholder {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.25rem;
  text-transform: uppercase;
}

.mobile-user-details {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  overflow: hidden;
  flex: 1;
}

.mobile-user-name {
  font-weight: 600;
  color: var(--color-text);
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mobile-user-email {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  margin-bottom: 1.5rem;
}

.mobile-nav-link {
  display: block;
  padding: 1rem 1.25rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 500;
  border-radius: 12px;
  transition: var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--color-surface);
  color: var(--color-text);
}

.mobile-nav-link.active {
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.15);
}

.mobile-nav-footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  flex-shrink: 0;
  position: sticky;
  bottom: 0;
  background: #0f0f1a;
}

.mobile-auth-btn {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
}

.mobile-logout-btn {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  display: block;
  text-align: center;
  color: #f8fafc !important;
  text-decoration: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

/* User Credits Badge in Header */
.user-credits {
  display: flex;
  align-items: center;
  padding: 0.4rem 0.75rem;
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 20px;
  transition: var(--transition-fast);
}

.user-credits:hover {
  background: var(--color-primary);
  color: white;
}

.user-credits-dropdown {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  color: white;
  box-shadow:
    var(--shadow-sm),
    0 0 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    var(--shadow-md),
    0 0 30px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-elevated);
  border-color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: none;
}

.btn-ghost:hover {
  color: var(--color-primary-light);
  background: rgba(99, 102, 241, 0.1);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-light);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  padding: 80px 24px 120px;
  text-align: center;
  background: radial-gradient(
    ellipse at top,
    rgba(99, 102, 241, 0.15) 0%,
    transparent 60%
  );
}

.hero--page {
  padding: 60px 24px 80px;
}

/* Hero Color Variants for SEO Pages */
.hero--orange {
  background: radial-gradient(
    ellipse at top,
    rgba(249, 115, 22, 0.15) 0%,
    transparent 60%
  );
}

.hero--orange .highlight,
.hero--orange .hero-badge {
  color: #f97316;
}

.hero--orange .generate-btn {
  background: linear-gradient(135deg, #f97316, #ea580c);
}

.hero--green {
  background: radial-gradient(
    ellipse at top,
    rgba(34, 197, 94, 0.15) 0%,
    transparent 60%
  );
}

.hero--green .highlight,
.hero--green .hero-badge {
  color: #22c55e;
}

.hero--green .generate-btn {
  background: linear-gradient(135deg, #22c55e, #16a34a);
}

.hero--blue {
  background: radial-gradient(
    ellipse at top,
    rgba(59, 130, 246, 0.15) 0%,
    transparent 60%
  );
}

.hero--blue .highlight,
.hero--blue .hero-badge {
  color: #3b82f6;
}

.hero--blue .generate-btn {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.hero-badge span {
  color: var(--color-primary-light);
  font-weight: 600;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(
    135deg,
    var(--color-text) 0%,
    var(--color-text-secondary) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .highlight {
  background: linear-gradient(
    135deg,
    var(--color-primary-light),
    var(--color-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
}

/* Generator Form */
.generator-form {
  max-width: 600px;
  margin: 0 auto;
}

.generator-input-wrapper {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.generator-input {
  flex: 1;
  padding: 16px 20px;
  font-size: 1rem;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  transition: var(--transition-fast);
}

.generator-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.generator-input::placeholder {
  color: var(--color-text-muted);
}

.slides-select {
  min-width: 160px;
  padding: 16px 44px 16px 20px;
  font-size: 0.9375rem;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  transition: var(--transition-fast);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
}

.slides-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.slides-select:hover {
  border-color: var(--color-primary);
}

.generate-btn {
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 600;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-secondary)
  );
  color: white;
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

.generate-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.generate-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.generator-hint {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.generator-hint .credits-info {
  color: var(--color-primary-light);
}

.generator-hint .free-info {
  color: var(--color-success);
}

.generator-hint .used-info {
  color: var(--color-text-muted);
}

/* ============================================
   Simple Hero (SlidesGPT-style)
   ============================================ */

.hero-simple {
  padding: 100px 24px 100px;
  text-align: center;
  background: radial-gradient(
    ellipse at top,
    rgba(99, 102, 241, 0.08) 0%,
    transparent 60%
  );
}

.hero-simple-container {
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-light);
  margin-bottom: 24px;
}

.hero-simple-title {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5.5vw, 3.75rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.1;
  white-space: nowrap;
}

.hero-simple-title .title-ai {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    #a78bfa 50%,
    #f472b6 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-simple-title .hero-brand {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-subtitle strong {
  color: var(--color-text);
  font-weight: 500;
}

.generator-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 24px;
  width: 100%;
  margin: 0 auto;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

.generator-textarea {
  width: 100%;
  min-height: 160px;
  padding: 20px;
  font-family: var(--font-primary);
  font-size: 1.0625rem;
  line-height: 1.6;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  resize: vertical;
  transition: var(--transition-fast);
}

.generator-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.generator-textarea::placeholder {
  color: var(--color-text-muted);
}

.generator-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
}

.generator-controls .create-btn {
  margin-left: auto;
}

.slides-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.slides-selector label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
}

.slides-dropdown {
  padding: 10px 36px 10px 16px;
  font-size: 0.9375rem;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
}

.slides-dropdown:focus {
  outline: none;
  border-color: var(--color-primary);
}

.create-btn {
  padding: 16px 40px;
  font-size: 1.0625rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 160px;
}

.create-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.45);
}

.create-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.create-btn .btn-text,
.create-btn .btn-loading {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.create-btn .btn-text[hidden],
.create-btn .btn-loading[hidden] {
  display: none !important;
}

.create-btn svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.create-btn .loading-spinner {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

/* Hero Features */
.hero-features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 32px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.hero-features span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-features svg {
  color: var(--color-success);
  flex-shrink: 0;
}

/* Color variants for SEO pages */
.hero-simple.hero--orange .create-btn {
  background: #f97316;
}

.hero-simple.hero--orange .create-btn:hover:not(:disabled) {
  background: #ea580c;
}

.hero-simple.hero--green .create-btn {
  background: #22c55e;
}

.hero-simple.hero--green .create-btn:hover:not(:disabled) {
  background: #16a34a;
}

.hero-simple.hero--blue .create-btn {
  background: #3b82f6;
}

.hero-simple.hero--blue .create-btn:hover:not(:disabled) {
  background: #2563eb;
}

/* Hero with Sample Presentations
   The two photo columns sit on the same edges as the header's .container
   (1280px max, 24px gutter) and fan gently toward the centre. */
.hero-simple.hero--with-samples {
  --hero-edge: max(24px, calc(50% - 616px));
  --sample-width: 176px;
  --sample-gap: 16px;
  position: relative;
  overflow: hidden;
  padding: 64px 24px;
  min-height: 800px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(
      ellipse 60% 50% at 50% 45%,
      rgba(99, 102, 241, 0.1) 0%,
      transparent 70%
    ),
    radial-gradient(
      ellipse at top,
      rgba(99, 102, 241, 0.08) 0%,
      transparent 60%
    );
}

.hero-samples {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--sample-gap);
  width: var(--sample-width);
  z-index: 1;
}

.hero-samples--left {
  left: var(--hero-edge);
}

.hero-samples--right {
  right: var(--hero-edge);
}

.hero-sample-card {
  --tilt: 0deg;
  --shift: 0px;
  display: block;
  width: 100%;
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  opacity: 0.88;
  transform: translateX(var(--shift)) rotate(var(--tilt));
  transition:
    transform var(--transition-normal),
    opacity var(--transition-normal),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
}

.hero-sample-card:hover {
  opacity: 1;
  transform: translateX(var(--shift)) translateY(-4px) scale(1.04);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.6),
    0 0 50px rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.4);
  z-index: 10;
}

/* A shallow arc: the middle cards step toward the content, outer cards tilt
   away from it. Right column mirrors the left. */
.hero-samples--left .hero-sample-card--1 { --tilt: -3deg; --shift: 0px; }
.hero-samples--left .hero-sample-card--2 { --tilt: -1deg; --shift: 20px; }
.hero-samples--left .hero-sample-card--3 { --tilt: 1deg; --shift: 20px; }
.hero-samples--left .hero-sample-card--4 { --tilt: 3deg; --shift: 0px; }
.hero-samples--right .hero-sample-card--1 { --tilt: 3deg; --shift: 0px; }
.hero-samples--right .hero-sample-card--2 { --tilt: 1deg; --shift: -20px; }
.hero-samples--right .hero-sample-card--3 { --tilt: -1deg; --shift: -20px; }
.hero-samples--right .hero-sample-card--4 { --tilt: -3deg; --shift: 0px; }

.hero-sample-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}

.hero-sample-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--color-surface-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.hero-sample-info {
  padding: 10px 14px;
  background: rgba(26, 26, 46, 0.95);
}

.hero-sample-title {
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  display: block;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Ensure main content stays centered and above samples */
.hero-simple.hero--with-samples .hero-simple-container {
  position: relative;
  z-index: 5;
}

/* The title may be wider than the 700px form, but never wider than the
   space between the photo columns; long titles wrap onto balanced lines. */
@media (min-width: 1201px) {
  .hero-simple.hero--with-samples .hero-simple-title {
    /* Same edge as --hero-edge, but in vw: % would resolve against the form. */
    --title-room: calc(
      100vw - 2 * max(24px, 50vw - 616px) - 2 * var(--sample-width) - 48px
    );
    width: var(--title-room);
    margin-left: 50%;
    transform: translateX(-50%);
    font-size: clamp(2.5rem, 3.3vw, 3.125rem);
    white-space: normal;
    text-wrap: balance;
  }
}

@media (max-width: 1440px) {
  .hero-simple.hero--with-samples {
    --sample-gap: 14px;
    min-height: 740px;
  }
}

@media (max-width: 1320px) {
  .hero-simple.hero--with-samples {
    --sample-width: 150px;
    --sample-gap: 12px;
    min-height: 680px;
  }

  .hero-samples--left .hero-sample-card--2,
  .hero-samples--left .hero-sample-card--3 {
    --shift: 12px;
  }

  .hero-samples--right .hero-sample-card--2,
  .hero-samples--right .hero-sample-card--3 {
    --shift: -12px;
  }

  .hero-sample-info {
    padding: 7px 10px;
  }

  .hero-sample-title {
    font-size: 0.7rem;
  }
}

/* Hide samples when they would crowd the form */
@media (max-width: 1200px) {
  .hero-samples {
    display: none;
  }

  .hero-simple-title {
    white-space: normal;
    text-wrap: balance;
  }

  .hero-simple.hero--with-samples {
    min-height: auto;
    padding: 80px 24px 80px;
    display: block;
  }
}

@media (max-width: 768px) {
  .hero-simple-title {
    font-size: clamp(2rem, 6vw, 2.75rem);
    white-space: normal;
    text-wrap: balance;
  }
}

@media (max-width: 600px) {
  .hero-simple {
    padding: 60px 16px 60px;
  }

  .hero-simple.hero--with-samples {
    padding: 60px 16px 60px;
  }

  .generator-card {
    padding: 20px;
  }

  .generator-textarea {
    min-height: 120px;
  }

  .generator-controls {
    flex-wrap: wrap;
    gap: 12px;
  }

  .slides-selector {
    flex: 0 0 auto;
  }

  .generator-controls .attach-btn {
    order: 0;
  }

  .generator-controls .attach-btn .attach-btn-text {
    display: none;
  }

  .generator-controls .attach-btn {
    padding: 10px;
  }

  .generator-controls .create-btn {
    width: 100%;
    justify-content: center;
    order: 1;
    margin-left: 0;
  }

  .hero-features {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
}

/* Hero Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Hero Form */
.hero-form {
  max-width: 600px;
  margin: 0 auto;
}

.highlight {
  background: linear-gradient(
    135deg,
    var(--color-primary-light),
    var(--color-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
}

/* ============================================
   Presentation Cards
   ============================================ */

.presentations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.presentation-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-fast);
}

.presentation-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.presentation-thumbnail {
  aspect-ratio: 16/9;
  background: var(--color-surface-elevated);
  overflow: hidden;
}

.presentation-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.presentation-thumbnail-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--color-text-muted);
}

.presentation-content {
  padding: 20px;
}

.presentation-category {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-primary-light);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.presentation-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.presentation-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.presentation-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ============================================
   Sections
   ============================================ */

/* ============================================
   Page Headers
   ============================================ */

.page-header {
  padding: 64px 24px 32px;
  text-align: center;
  background: var(--color-background);
}

@media (max-width: 768px) {
  .page-header {
    padding: 48px 16px 24px;
  }
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 12px;
}

.page-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ============================================
   Sections
   ============================================ */

.section {
  padding: 40px 24px 60px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Form controls use the site font instead of the browser default. */
input,
textarea,
select,
button {
  font-family: inherit;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Shared vertical rhythm for full-width content bands. The inner .container
   provides the side gutter, so bands only set vertical spacing. The
   `main >` prefix outranks the per-section rules and their media queries. */
:root {
  --section-space: 80px;
}

main > .features,
main > .how-it-works,
main > .perfect-for,
main > .testimonials,
main > .faq-section,
main > .recent-presentations,
main > .source-seo-overview,
main > .source-use-cases,
main > .source-expectation-section,
main > .related-source-tools,
main > .idea-hub {
  padding: var(--section-space) 0;
}

main > .cta-section {
  padding: calc(var(--section-space) + 16px) 0;
}

/* Adjacent bands on the same background read as one; don't double the gap. */
main > .faq-section + .recent-presentations,
main > .source-expectation-section + .faq-section {
  padding-top: 0;
}

@media (max-width: 768px) {
  :root {
    --section-space: 56px;
  }
}

@media (max-width: 480px) {
  :root {
    --section-space: 48px;
  }
}

/* ============================================
   Features
   ============================================ */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--color-primary),
    var(--color-primary-dark)
  );
  border-radius: var(--radius-md);
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-description {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
  padding: 100px 24px;
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-primary-dark) 100%
  );
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 32px;
}

.cta-buttons .btn-primary {
  background: white;
  color: var(--color-primary-dark);
}

.cta-buttons .btn-primary:hover {
  background: rgba(255, 255, 255, 0.9);
}

.cta-buttons .btn-outline {
  border-color: white;
  color: white;
}

.cta-buttons .btn-outline:hover {
  background: white;
  color: var(--color-primary-dark);
}

.cta-features {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9375rem;
}

.cta-features span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ============================================
   Recent Presentations Section
   ============================================ */

.recent-presentations {
  padding: 80px 24px;
}

.section-footer {
  text-align: center;
  margin-top: 40px;
}

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--color-text-muted);
}

/* ============================================
   How It Works
   ============================================ */

.how-it-works {
  padding: 80px 24px;
  background: var(--color-surface);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step-card {
  text-align: center;
  position: relative;
  padding: 32px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.step-number {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin: 0 auto 16px;
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.step-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

/* ============================================
   Perfect For Section
   ============================================ */

.perfect-for {
  padding: 80px 0;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.use-case-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition-fast);
}

.use-case-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.use-case-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.use-case-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
}

.use-case-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials {
  padding: 80px 24px;
  background: var(--color-surface);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 1.125rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
  color: white;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50%;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9375rem;
}

.author-role {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (max-width: 1024px) {
  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .use-cases-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Contact Page
   ============================================ */

.contact-section {
  padding: 20px 24px 40px;
}

.contact-compact {
  max-width: 600px;
  margin: 0 auto;
}

.contact-main {
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.contact-icon-large {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
  color: white;
}

.contact-details {
  flex: 1;
}

.contact-details h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.contact-details p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.contact-email-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}

.contact-email-link:hover {
  text-decoration: underline;
}

.contact-response {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.contact-response svg {
  color: var(--color-primary);
}

@media (max-width: 600px) {
  .contact-main {
    flex-direction: column;
    text-align: center;
  }

  .contact-main .btn {
    width: 100%;
  }
}

/* Legacy contact styles (unused but kept for reference) */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  transition: var(--transition-fast);
}

.contact-card:hover {
  border-color: var(--color-primary);
}

.contact-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
  border-radius: var(--radius-lg);
  margin: 0 auto 20px;
  color: white;
}

.contact-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.contact-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.contact-email {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary-light);
  margin-bottom: 20px;
}

.contact-email:hover {
  text-decoration: underline;
}

.response-badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(34, 197, 94, 0.15);
  color: var(--color-success);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-full);
}

.contact-info {
  max-width: 800px;
  margin: 0 auto;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
  color: var(--color-text);
}

.help-topics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.help-topic {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.topic-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.help-topic h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.help-topic p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .help-topics {
    grid-template-columns: 1fr;
  }
}

.step-description {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ============================================
   Use Cases
   ============================================ */

.use-cases {
  padding: 80px 24px;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.use-case-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

.use-case-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.use-case-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.use-case-card h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.use-case-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

/* ============================================
   FAQ
   ============================================ */

.faq-section {
  padding: 40px 24px 60px;
}


.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-surface-elevated);
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--color-primary-light);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p,
.faq-answer-content {
  padding: 0 24px 20px;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 48px 24px 32px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-main {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 64px;
  margin-bottom: 48px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-tagline {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 280px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-column h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 16px;
}

.footer-column a {
  display: block;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: 12px;
  transition: var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ============================================
   Presentation Viewer
   ============================================ */

.presentation-page {
  background: var(--color-background);
  overflow-x: hidden;
  width: 100%;
}

.presentation-header {
  padding: 32px 24px;
  border-bottom: 1px solid var(--color-border);
}

.presentation-header .container {
  max-width: 1200px;
  margin: 0 auto;
}

.header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.header-left {
  flex: 1;
  min-width: 0;
}

.presentation-page .presentation-title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.presentation-page .presentation-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.header-actions .download-menu {
  position: relative;
}

.header-actions .download-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  border: none;
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
  color: white;
  cursor: pointer;
  transition: var(--transition-fast);
}

.header-actions .download-trigger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(234, 88, 12, 0.3);
}

.header-actions .download-caret {
  opacity: 0.9;
}

.download-options {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 200px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 6px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: var(--transition-fast);
  z-index: 10;
}

.download-menu:hover .download-options,
.download-menu:focus-within .download-options {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.download-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

.download-option:hover {
  background: var(--color-background);
}

.header-actions .action-btn {
  padding: 10px;
}

.header-actions .action-btn span {
  display: none;
}

.private-badge {
  color: #f97316;
}

/* Presentation Toolbar */
.presentation-toolbar {
  padding: 16px 24px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.presentation-toolbar .container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.toolbar-downloads {
  display: flex;
  gap: 12px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

.download-pptx {
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
  color: white;
}

.download-pptx:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(234, 88, 12, 0.3);
}

.toolbar-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: var(--transition-fast);
}

.action-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-background);
}

.action-btn.action-danger {
  color: var(--color-error);
}

.action-btn.action-danger:hover {
  border-color: var(--color-error);
  background: rgba(239, 68, 68, 0.1);
}

.presentation-viewer {
  padding: 32px 24px 60px;
}

.presentation-viewer .container {
  max-width: 1200px;
  margin: 0 auto;
}

.viewer-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  align-items: start;
}

/* Slides Sidebar */
.slides-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: sticky;
  top: 100px;
}

.sidebar-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.slides-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: calc(100vh - 220px);
  overflow-y: auto;
}

.slide-thumb {
  padding: 14px 16px;
  background: var(--color-surface-elevated);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
}

.slide-thumb:hover {
  border-color: var(--color-border);
  background: var(--color-background);
}

.slide-thumb.active {
  border-color: var(--color-primary);
  background: rgba(99, 102, 241, 0.1);
}

.slide-num {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.slide-name {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Main Slide Viewer */
.slide-viewer {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.slide-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 16px;
}

.slide {
  display: none;
}

.slide.active {
  display: block;
}

.slide-content {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
}

.slide-content.title-slide {
  grid-template-columns: 1fr 1fr;
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
}

.slide-content.title-slide .title-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px;
}

.slide-content.title-slide .slide-heading {
  color: white;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  margin-bottom: 16px;
}

.slide-content.title-slide .slide-subheading {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  line-height: 1.6;
}

.slide-content.title-slide .title-right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(255, 255, 255, 0.1);
}

.slide-content.title-slide .title-right img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.slide-content.title-slide .slide-placeholder {
  font-size: 4rem;
  opacity: 0.5;
}

.slide-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px;
  text-align: center;
}

.slide-center .slide-heading {
  color: white;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

.slide-center .slide-subheading {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.125rem;
  margin-top: 16px;
}

.slide-left {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.slide-number {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: 16px;
}

.slide-heading {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 16px;
  line-height: 1.2;
  flex-shrink: 0;
}

.slide-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  overflow: hidden;
}

.slide-bullets li {
  position: relative;
  padding-left: 24px;
  font-size: 0.9375rem;
  color: #475569;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.slide-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
}

.slide-right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
}

.slide-right img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Fullscreen Presentation Mode */
.slide-container:fullscreen,
.slide-container:-webkit-full-screen {
  background: #0f172a;
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-container:fullscreen .slide,
.slide-container:-webkit-full-screen .slide {
  width: 100%;
  max-width: 1600px;
  height: auto;
}

.slide-container:fullscreen .slide-content,
.slide-container:-webkit-full-screen .slide-content {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.slide-container:fullscreen .slide-left,
.slide-container:-webkit-full-screen .slide-left {
  padding: 60px;
}

.slide-container:fullscreen .slide-number,
.slide-container:-webkit-full-screen .slide-number {
  width: 56px;
  height: 56px;
  font-size: 1.25rem;
  margin-bottom: 24px;
}

.slide-container:fullscreen .slide-heading,
.slide-container:-webkit-full-screen .slide-heading {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 32px;
}

.slide-container:fullscreen .slide-bullets li,
.slide-container:-webkit-full-screen .slide-bullets li {
  font-size: 1.5rem;
  margin-bottom: 24px;
  padding-left: 36px;
  line-height: 1.5;
}

.slide-container:fullscreen .slide-bullets li::before,
.slide-container:-webkit-full-screen .slide-bullets li::before {
  width: 14px;
  height: 14px;
  top: 12px;
}

.slide-container:fullscreen .slide-center .slide-heading,
.slide-container:-webkit-full-screen .slide-center .slide-heading {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

.slide-container:fullscreen .slide-center .slide-subheading,
.slide-container:-webkit-full-screen .slide-center .slide-subheading {
  font-size: 1.5rem;
  margin-top: 24px;
}

.slide-container:fullscreen .slide-right,
.slide-container:-webkit-full-screen .slide-right {
  padding: 40px;
}

.slide-container:fullscreen .slide-right img,
.slide-container:-webkit-full-screen .slide-right img {
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.slide-placeholder {
  font-size: 4rem;
  color: #94a3b8;
}

/* Navigation */
.slide-navigation {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.nav-btn {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text);
  transition: var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.slide-counter {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  min-width: 80px;
  text-align: center;
}

/* Responsive */
@media (max-width: 900px) {
  .viewer-layout {
    display: flex;
    flex-direction: column;
  }

  .slide-viewer {
    order: 1;
  }

  .slides-sidebar {
    position: static;
    order: 2;
    padding: 16px;
  }

  .slides-list {
    flex-direction: row;
    overflow-x: auto;
    max-height: none;
    padding-bottom: 8px;
    gap: 12px;
    -webkit-overflow-scrolling: touch;
  }

  .slide-thumb {
    min-width: 160px;
    flex-shrink: 0;
  }

  .slide-container {
    padding: 12px;
  }

  .slide-navigation {
    margin-top: 16px;
  }

  .nav-btn {
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 768px) {
  .presentation-toolbar .container {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar-downloads {
    justify-content: center;
  }

  .toolbar-actions {
    justify-content: center;
  }

  .action-btn span {
    display: none;
  }
}

@media (max-width: 900px) {
  .header-row {
    flex-direction: column;
    gap: 16px;
  }

  .header-actions {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
}

@media (max-width: 600px) {
  .presentation-header {
    padding: 16px;
  }

  .presentation-header .container {
    padding: 0;
  }

  .presentation-title {
    font-size: 1.25rem;
    word-wrap: break-word;
  }

  .presentation-meta {
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.8rem;
  }

  .header-actions .download-trigger span {
    display: none;
  }

  .presentation-header {
    padding: 16px;
  }

  .presentation-header .container {
    padding: 0;
  }

  .presentation-viewer {
    padding: 8px;
  }

  .presentation-viewer .container {
    padding: 0;
    max-width: 100%;
    overflow: hidden;
  }

  .viewer-layout {
    display: block !important;
    width: 100%;
  }

  .slide-viewer {
    width: 100%;
  }

  .slide-container {
    padding: 8px;
    width: 100%;
    overflow: hidden;
  }

  .slide-content {
    display: block !important;
    aspect-ratio: auto !important;
    height: auto !important;
    width: 100% !important;
    grid-template-columns: 1fr !important;
  }

  .slide-content.title-slide {
    display: block !important;
    grid-template-columns: 1fr !important;
  }

  .slide-content.title-slide .title-right {
    display: block !important;
    width: 100% !important;
    padding: 20px;
    min-height: 150px;
    text-align: center;
  }

  .slide-content.title-slide .title-right img {
    max-width: 90%;
    max-height: 140px;
    height: auto;
    margin: 0 auto;
    display: block;
  }

  .slide-content.title-slide .title-left {
    display: block !important;
    width: 100% !important;
    padding: 20px;
  }

  .slide-content.title-slide .slide-heading {
    font-size: 1.1rem;
  }

  .slide-content.title-slide .slide-subheading {
    font-size: 0.85rem;
  }

  .slide-left {
    display: block !important;
    width: 100% !important;
    padding: 16px;
  }

  .slide-right {
    display: block !important;
    width: 100% !important;
    padding: 16px;
    min-height: 140px;
    text-align: center;
  }

  .slide-right img {
    max-width: 90%;
    max-height: 140px;
    height: auto;
    margin: 0 auto;
    display: block;
  }

  .slide-heading {
    font-size: 1rem;
    word-wrap: break-word;
    overflow-wrap: anywhere;
  }

  .slide-bullets {
    padding-left: 0;
    max-height: none;
    overflow: visible;
  }

  .slide-bullets li {
    font-size: 0.875rem;
    padding-left: 20px;
    margin-bottom: 10px;
    display: block;
    -webkit-line-clamp: unset;
    -webkit-box-orient: initial;
    overflow: visible;
    text-overflow: unset;
  }

  .slide-bullets li::before {
    width: 8px;
    height: 8px;
    top: 8px;
    left: 0;
  }

  .slide-navigation {
    margin-top: 12px;
    gap: 12px;
  }

  .nav-btn {
    width: 40px;
    height: 40px;
  }

  .slide-counter {
    font-size: 0.85rem;
    min-width: 60px;
  }

  .slides-sidebar {
    padding: 12px;
    margin-top: 12px;
  }

  .sidebar-title {
    font-size: 0.7rem;
  }

  .slide-thumb {
    min-width: 140px;
    padding: 10px;
  }

  .slide-num {
    font-size: 0.65rem;
  }

  .slide-name {
    font-size: 0.75rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .slide-num {
    font-size: 0.65rem;
  }

  .slide-name {
    font-size: 0.8rem;
  }
}

/* ============================================
   Dashboard
   ============================================ */

.dashboard {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.dashboard-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
}

/* ============================================
   Pricing
   ============================================ */

.pricing-section {
  padding: 40px 24px 80px;
}

/* Free Banner */
.free-banner {
  display: flex;
  align-items: center;
  gap: 20px;
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.1) 0%,
    rgba(139, 92, 246, 0.1) 100%
  );
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  margin-bottom: 48px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.free-banner-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.free-banner-content {
  flex: 1;
}

.free-banner-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.free-banner-content p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.free-banner-content strong {
  color: var(--color-primary-light);
}

/* Single Pricing Card Layout */
.pricing-single {
  max-width: 420px;
  margin: 0 auto 48px;
}

.pricing-single .pricing-card {
  transition: all 0.3s ease;
}

.pricing-single .pricing-card .pricing-price {
  transition: all 0.2s ease;
}

.pricing-single .pricing-card .pricing-name {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@keyframes pricePulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.02);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
  }
  100% {
    transform: scale(1);
  }
}

/* Mobile-first pricing adjustments */
@media (max-width: 768px) {
  .pricing-single {
    margin: 0 auto 32px;
  }

  .pricing-single .pricing-card {
    padding: 32px 24px;
  }

  .credit-packs-title {
    font-size: 1.25rem;
  }
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto 60px;
}

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  text-align: center;
  transition: var(--transition-fast);
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.pricing-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-price {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.pricing-price span {
  font-size: 1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.pricing-description {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 32px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features .check {
  color: var(--color-success);
}

.credit-packs {
  max-width: 900px;
  margin: 0 auto;
}

.credit-packs-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
}

.credit-packs-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: 24px;
}

.credit-packs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.credit-packs-grid.credit-packs-3 {
  grid-template-columns: repeat(3, 1fr);
}

.credit-pack {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: all 0.2s ease;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.credit-pack:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
}

.credit-pack:active {
  transform: translateY(-2px);
}

.credit-pack.popular {
  border-color: var(--color-primary);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.credit-pack.popular:hover {
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.35);
}

.credit-pack.selected {
  border-color: var(--color-primary);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.15) 0%,
    rgba(99, 102, 241, 0.05) 100%
  );
  box-shadow:
    0 0 0 2px var(--color-primary),
    0 8px 24px rgba(99, 102, 241, 0.25);
  transform: translateY(-4px);
}

.credit-pack.selected::after {
  content: "✓";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: white;
  font-weight: bold;
}

.credit-pack.selected .pack-price {
  color: var(--color-text);
}

.pack-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
  white-space: nowrap;
}

.pack-badge.best {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.pack-credits {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.pack-price {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 4px;
}

.pack-per {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================
   About
   ============================================ */

.about-content {
  padding: 80px 24px;
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 16px;
}

.about-text h2:first-child {
  margin-top: 0;
}

.about-text p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-stats {
  display: grid;
  gap: 20px;
}

.about-stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.about-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: 4px;
}

.about-stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ============================================
   Archive
   ============================================ */

.archive-controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 32px;
}

.archive-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.search-form {
  display: flex;
  gap: 12px;
}

@media (max-width: 600px) {
  .search-form {
    width: 100%;
  }

  .search-form .search-input {
    flex: 1;
    min-width: 0;
    width: auto;
  }
}

.search-input {
  width: 250px;
  padding: 10px 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 0.9375rem;
}

.search-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 24px;
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--color-text);
}

.empty-state p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

/* Load More */
.load-more {
  text-align: center;
  margin-top: 48px;
}

/* ============================================
   Loading States
   ============================================ */

.loading-spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Generating Overlay */
.generating-overlay,
.failed-overlay {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(
    ellipse at center,
    rgba(99, 102, 241, 0.05) 0%,
    transparent 70%
  );
}

.generating-content,
.failed-content {
  text-align: center;
  max-width: 500px;
  padding: 60px 48px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
}

.generating-spinner {
  width: 80px;
  height: 80px;
  border: 5px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 40px;
}

.generating-title,
.failed-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
}

.generating-subtitle,
.failed-message {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.generating-progress {
  margin-top: 32px;
}

.progress-bar {
  width: 100%;
  height: 10px;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 20px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #a78bfa, #f472b6);
  background-size: 200% 100%;
  border-radius: var(--radius-full);
  width: 5%;
  transition: width 0.5s ease;
  animation: shimmer 2s linear infinite;
}

@keyframes shimmer {
  0% {
    background-position: 100% 0;
  }
  100% {
    background-position: -100% 0;
  }
}

.progress-text {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.failed-icon {
  font-size: 5rem;
  margin-bottom: 32px;
}

@media (max-width: 600px) {
  .generating-content,
  .failed-content {
    padding: 40px 24px;
  }

  .generating-spinner {
    width: 60px;
    height: 60px;
  }

  .generating-title,
  .failed-title {
    font-size: 1.5rem;
  }
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 26, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.loading-content {
  text-align: center;
}

.loading-content .loading-spinner {
  width: 48px;
  height: 48px;
  border-width: 3px;
  margin-bottom: 24px;
}

.loading-text {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

/* ============================================
   Alerts
   ============================================ */

.alert {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.alert-success {
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--color-success);
}

.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--color-error);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--color-warning);
}

/* ============================================
   Error Page
   ============================================ */

.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}

.error-code {
  font-family: var(--font-display);
  font-size: 8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.error-message {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  max-width: 400px;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .presentation-shell {
    grid-template-columns: 140px 1fr;
  }

  .presentation-tools {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stats {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  /* Header */
  .header-container {
    height: 64px;
    padding: 0 1rem;
  }

  .nav-menu {
    display: none;
  }

  .header-actions .btn-nav-login,
  .header-actions .btn-nav-signup,
  .header-actions .user-menu {
    display: none;
  }

  .hamburger-btn {
    display: flex;
  }

  .user-credits {
    padding: 0.35rem 0.6rem;
    font-size: 0.75rem;
  }

  /* Container */
  .container {
    padding: 0 16px;
  }

  /* Section Titles */
  .section-title {
    font-size: 1.75rem;
  }

  .section-subtitle {
    font-size: 1rem;
  }

  .section-header {
    margin-bottom: 24px;
  }

  /* Hero */
  .hero {
    padding: 48px 16px 64px;
  }

  .hero h1,
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .generator-input-wrapper {
    flex-direction: column;
  }

  .hero-stats {
    flex-direction: row;
    gap: 24px;
    flex-wrap: wrap;
  }

  .hero-stat-number {
    font-size: 1.5rem;
  }

  /* Pricing */
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .free-banner {
    flex-direction: column;
    text-align: center;
    padding: 20px;
  }

  .free-banner .btn {
    width: 100%;
  }

  .credit-packs-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Perfect For / Use Cases */
  .perfect-for {
    padding: 48px 0;
  }

  .use-cases-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .use-case-card {
    padding: 20px 16px;
  }

  .use-case-icon {
    font-size: 2rem;
    margin-bottom: 12px;
  }

  .use-case-title {
    font-size: 1rem;
  }

  .use-case-desc {
    font-size: 0.85rem;
  }

  /* FAQ */
  .faq-section {
    padding: 32px 16px 48px;
  }

  .faq-question {
    padding: 16px;
    font-size: 0.9375rem;
  }

  .faq-answer p,
  .faq-answer-content {
    padding: 0 16px 16px;
    font-size: 0.875rem;
  }

  /* Presentations */
  .presentation-shell {
    grid-template-columns: 1fr;
  }

  .presentation-sidebar {
    position: static;
    order: 2;
  }

  .slides-thumbnails {
    flex-direction: row;
    overflow-x: auto;
  }

  .slide-thumb {
    min-width: 140px;
  }

  .presentation-topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .presentation-actions {
    width: 100%;
  }

  .presentation-actions .btn {
    flex: 1;
    justify-content: center;
  }

  .slide-inner {
    grid-template-columns: 1fr;
  }

  .slide-image-area {
    order: -1;
    height: 220px;
  }

  .presentations-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .slide {
    grid-template-columns: 1fr;
  }

  .slide-image {
    order: -1;
    height: 250px;
  }

  /* Footer */
  .site-footer {
    padding: 48px 16px 32px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-link-group h4 {
    font-size: 0.875rem;
    margin-bottom: 12px;
  }

  .footer-link-group a {
    font-size: 0.85rem;
  }

  .footer-bottom {
    padding-top: 24px;
    font-size: 0.8rem;
  }

  /* Dashboard */
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-card {
    padding: 20px 16px;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  /* CTA */
  .cta-section {
    padding: 48px 16px;
  }

  .cta-title {
    font-size: 1.5rem;
  }

  .cta-subtitle {
    font-size: 0.95rem;
  }

  .cta-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .cta-features {
    flex-direction: column;
    gap: 12px;
  }

  /* Archive */
  .archive-section {
    padding: 32px 16px;
  }

  .archive-header h1 {
    font-size: 1.75rem;
  }

  /* Buttons */
  .btn {
    padding: 12px 20px;
    font-size: 0.875rem;
  }

  .btn-lg {
    padding: 14px 24px;
    font-size: 0.9375rem;
  }
}

@media (max-width: 480px) {
  /* Section Titles */
  .section-title {
    font-size: 1.5rem;
  }

  .section-subtitle {
    font-size: 0.9rem;
  }

  /* Hero */
  .hero {
    padding: 40px 16px 56px;
  }

  .hero h1,
  .hero-title {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 0.9rem;
  }

  /* Pricing */
  .pricing-section {
    padding: 24px 12px 32px;
  }

  .pricing-single .pricing-card {
    padding: 24px 20px;
  }

  .pricing-price {
    font-size: 2.5rem;
  }

  .pricing-per {
    font-size: 0.85rem;
  }

  .credit-packs-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .credit-packs-grid.credit-packs-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .credit-pack {
    padding: 14px 6px;
  }

  .credit-pack.selected::after {
    width: 18px;
    height: 18px;
    font-size: 10px;
    top: -8px;
    right: -8px;
  }

  .pack-badge {
    font-size: 0.6rem;
    padding: 2px 5px;
    top: -7px;
  }

  .pack-credits {
    font-size: 0.85rem;
  }

  .pack-price {
    font-size: 1.1rem;
  }

  .pack-per {
    font-size: 0.6rem;
  }

  .credit-packs {
    margin-bottom: 24px;
  }

  .credit-packs-title {
    font-size: 1.125rem;
  }

  .credit-packs-subtitle {
    font-size: 0.8rem;
    margin-bottom: 16px;
  }

  /* Use Cases */
  .use-cases-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .use-case-card {
    padding: 16px 12px;
  }

  .use-case-icon {
    font-size: 1.75rem;
    margin-bottom: 10px;
  }

  .use-case-title {
    font-size: 0.9rem;
  }

  .use-case-desc {
    font-size: 0.8rem;
    display: none;
  }

  /* FAQ */
  .faq-section {
    padding: 24px 12px 32px;
  }

  .faq-question {
    padding: 14px 12px;
    font-size: 0.875rem;
  }

  .faq-answer p,
  .faq-answer-content {
    padding: 0 12px 14px;
    font-size: 0.8rem;
  }

  /* Footer */
  .site-footer {
    padding: 32px 12px 24px;
  }

  .footer-links {
    gap: 20px;
  }

  .footer-link-group h4 {
    font-size: 0.8rem;
  }

  .footer-link-group a {
    font-size: 0.8rem;
  }

  .footer-bottom {
    font-size: 0.75rem;
  }

  /* Presentations */
  .presentation-page {
    padding: 0;
  }

  .presentation-canvas {
    padding: 16px;
  }

  .slide-content-area {
    padding: 28px;
  }
  .footer-links {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .presentation-actions {
    flex-direction: column;
  }

  .presentation-actions .btn {
    width: 100%;
  }
}

/* ============================================
   Auth Modal
   ============================================ */

.auth-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-modal[hidden] {
  display: none;
}

/* Delete Account Modal */
.delete-account-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.delete-account-modal[hidden] {
  display: none;
}

.delete-account-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  cursor: pointer;
}

.delete-account-modal-container {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  animation: modalSlideIn 0.3s ease;
}

.auth-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
}

.auth-modal-container {
  position: relative;
  width: 100%;
  max-width: 900px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.auth-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-elevated);
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
  z-index: 10;
}

.auth-modal-close:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.auth-modal-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.auth-form-side {
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-header {
  margin-bottom: 32px;
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 24px;
}

.auth-logo .logo-icon {
  font-size: 1.5rem;
}

.auth-header h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-header p {
  color: var(--color-text-secondary);
}

.google-signin-btn {
  width: 100%;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  color: #1f1f1f;
  cursor: pointer;
  transition: var(--transition-fast);
}

.google-signin-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.google-signin-btn svg {
  flex-shrink: 0;
}

.auth-terms {
  margin-top: 24px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
}

.auth-terms a {
  color: var(--color-primary-light);
}

.auth-terms a:hover {
  text-decoration: underline;
}

.auth-benefits-side {
  position: relative;
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-primary-dark) 100%
  );
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-benefits-bg {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.auth-benefits-content {
  position: relative;
  z-index: 1;
}

.auth-benefits-content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 32px;
}

.auth-benefit-list {
  margin-bottom: 40px;
}

.auth-benefit {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9375rem;
}

.benefit-icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  flex-shrink: 0;
}

.benefit-icon svg {
  width: 14px;
  height: 14px;
  stroke: white;
}

.auth-stats {
  display: flex;
  gap: 24px;
}

.auth-stat {
  text-align: center;
}

.auth-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: white;
  margin-bottom: 4px;
}

.auth-stat-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Credits Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
}

.modal-overlay.active {
  display: flex;
  animation: overlayFadeIn 0.3s ease;
}

@keyframes overlayFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.credits-modal {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: linear-gradient(165deg, #1e1e32 0%, #151522 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 24px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.05),
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 100px rgba(99, 102, 241, 0.15);
  padding: 0;
  text-align: center;
  animation: modalSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.credits-modal .modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  border: none;
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  z-index: 10;
}

.credits-modal .modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text);
  transform: rotate(90deg);
}

.credits-modal-header {
  position: relative;
  padding: 40px 32px 20px;
  background: linear-gradient(
    180deg,
    rgba(99, 102, 241, 0.08) 0%,
    transparent 100%
  );
}

.credits-modal-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  background: radial-gradient(
    circle,
    rgba(99, 102, 241, 0.3) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.credits-modal-icon {
  position: relative;
  margin-bottom: 20px;
  animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

.credits-modal-icon svg {
  filter: drop-shadow(0 8px 16px rgba(99, 102, 241, 0.4));
}

.credits-modal-title {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.credits-modal-message {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  max-width: 280px;
  margin: 0 auto 22px;
}

.credits-modal-pricing {
  margin: 0 24px 22px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(99, 102, 241, 0.28);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.12),
    rgba(15, 23, 42, 0.7)
  );
  box-shadow: inset 0 0 0 1px rgba(148, 163, 184, 0.08);
  text-align: left;
}

.credits-modal-pricing .pricing-name {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.credits-modal-pricing .pricing-price {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.credits-modal-pricing .pricing-price span {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.credits-modal-pricing .pricing-description {
  color: var(--color-text-secondary);
  margin-bottom: 14px;
}

.credits-modal-pricing .pricing-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.credits-modal-pricing .pricing-features li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.credits-modal-pricing .check {
  color: #22c55e;
  font-weight: 700;
}

.credits-modal-actions {
  padding: 0 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.credits-modal-actions .btn {
  height: 46px;
  font-size: 1rem;
}

.btn-checkout {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  border: none;
  border-radius: 14px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.btn-checkout:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

.btn-checkout:active {
  transform: translateY(0);
}

.btn-checkout .btn-text {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-checkout .btn-loading {
  display: none;
  align-items: center;
  gap: 10px;
}

.btn-checkout.loading .btn-text {
  display: none;
}

.btn-checkout.loading .btn-loading {
  display: flex;
}

.btn-checkout .btn-loading .spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.btn-dismiss {
  width: 100%;
  padding: 14px 24px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-dismiss:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--color-text);
}

.credits-modal-packs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.credits-modal-packs.credits-modal-packs-3 {
  grid-template-columns: repeat(3, 1fr);
  padding: 0 24px;
  margin-bottom: 16px;
}

.modal-pack {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 16px 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 2px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
  color: inherit;
}

.modal-pack:hover {
  border-color: rgba(99, 102, 241, 0.5);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

.modal-pack.selected {
  border-color: var(--color-primary);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.2) 0%,
    rgba(99, 102, 241, 0.1) 100%
  );
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.modal-pack.popular {
  border-color: rgba(99, 102, 241, 0.4);
}

.modal-pack-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 8px;
  background: var(--color-primary);
  border-radius: 10px;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: white;
  white-space: nowrap;
}

.modal-pack-badge.best {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.modal-pack-credits {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.modal-pack-label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.modal-pack-price {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary-light);
}

.modal-pack.selected .modal-pack-credits {
  color: var(--color-text);
}

.modal-pack.selected .modal-pack-price {
  color: #a5b4fc;
}

.credits-modal-summary {
  padding: 0 24px;
  margin: 0 0 16px;
}

.summary-breakdown {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 12px;
  overflow: hidden;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.summary-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.summary-value.price {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.credits-modal-perks {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  padding: 0 24px 20px;
}

.credits-modal-perks .perk-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.credits-modal-perks .perk-item svg {
  color: #22c55e;
  flex-shrink: 0;
}

.credits-modal-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.credits-modal-footer svg {
  color: var(--color-text-muted);
}

.credits-modal-footer span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

@media (max-width: 420px) {
  .credits-modal-packs {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .modal-pack {
    padding: 14px 6px 10px;
  }

  .modal-pack-credits {
    font-size: 1.25rem;
  }
}

@media (max-width: 768px) {
  .auth-modal-content {
    grid-template-columns: 1fr;
  }

  .auth-benefits-side {
    display: none;
  }

  .auth-form-side {
    padding: 32px 24px;
  }

  .credits-modal {
    max-width: calc(100vw - 32px);
    margin: 16px;
  }

  .credits-modal-header {
    padding: 32px 24px 20px;
  }

  .credits-modal-card {
    margin: 0 16px 20px;
    padding: 20px;
  }

  .credits-card-offer {
    gap: 8px;
  }

  .price-value,
  .credits-amount {
    font-size: 2.5rem;
  }

  .price-currency {
    font-size: 1.25rem;
    margin-top: 4px;
  }

  .credits-modal-actions {
    padding: 0 16px 20px;
  }

  .credits-modal-footer {
    padding: 14px 16px;
  }
}

/* ============================================
   Social Proof Notification
   ============================================ */

.social-proof {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  transform: translateX(120%);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-proof.visible {
  transform: translateX(0);
  opacity: 1;
}

.social-proof-content {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.05);
  max-width: 320px;
}

.social-proof-flag {
  font-size: 2.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.social-proof-text {
  flex: 1;
  min-width: 0;
}

.social-proof-name {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 2px;
}

.social-proof-name strong {
  font-weight: 600;
}

.social-proof-action {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.social-proof-plan {
  color: #f472b6;
  font-weight: 600;
}

.social-proof-time {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.social-proof-close {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s ease;
  line-height: 1;
}

.social-proof-close:hover {
  opacity: 1;
}

@media (max-width: 600px) {
  .social-proof {
    left: 12px;
    right: 12px;
    bottom: 12px;
    transform: translateY(120%);
  }

  .social-proof.visible {
    transform: translateY(0);
  }

  .social-proof-content {
    max-width: none;
  }
}

/* ============================================
   Star Rating Component
   ============================================ */

.presentation-rating {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.star-rating {
  display: flex;
  gap: 4px;
}

.star-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
}

.star-btn:hover {
  color: #fbbf24;
  transform: scale(1.1);
}

.star-btn.active,
.star-btn.hover {
  color: #fbbf24;
}

.star-btn.active svg,
.star-btn.hover svg {
  fill: #fbbf24;
}

.rating-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
}

.avg-rating {
  font-weight: 600;
  color: var(--color-text);
}

.rating-count {
  color: var(--color-text-muted);
}

.source-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ============================================
   Unified Input with Attachment Button
   ============================================ */

.input-container {
  position: relative;
}

.attach-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.attach-btn-text {
  white-space: nowrap;
}

.attach-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.attach-btn.has-file {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.input-container .generator-textarea {
  margin-bottom: 0;
}

.source-type-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--color-surface-elevated);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.source-type-indicator.youtube {
  background: rgba(255, 0, 0, 0.1);
  color: #ff4444;
}

.source-type-indicator.url {
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary-light);
}

.source-type-indicator.pdf {
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-success);
}

.source-type-indicator.word {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
}

.source-clear-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: inherit;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0.6;
  padding: 0 4px;
  line-height: 1;
}

.source-clear-btn:hover {
  opacity: 1;
}

/* Attached File Chip */
.attached-file {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-md);
  margin-top: 12px;
  color: var(--color-success);
}

.attached-file .file-name {
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
}

.attached-file .file-size {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.attached-file .remove-file-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.attached-file .remove-file-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

/* Dashboard Rating Display */
.presentation-card .rating-display {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.presentation-card .rating-display .star {
  color: #fbbf24;
}

/* Form dragover state */
.generator-card.dragover {
  border-color: var(--color-primary);
  background: rgba(99, 102, 241, 0.05);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.generator-card.dragover::after {
  content: "Drop PDF here";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 15, 26, 0.9);
  border-radius: inherit;
  font-size: 1.2rem;
  color: var(--color-primary-light);
  pointer-events: none;
}

/* ============================================
   YouTube Summarizer Tool Styles
   ============================================ */

.tool-page {
  padding: 64px 0 var(--section-space);
  min-height: calc(100vh - 200px);
}

.tool-page .container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.tool-header {
  text-align: center;
  margin-bottom: 40px;
}

.tool-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.tool-icon {
  font-size: 2rem;
}

.tool-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Summarizer Card */
.summarizer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 40px;
}

.summarizer-form .input-row {
  display: flex;
  gap: 12px;
}

.summarizer-form input[type="url"] {
  flex: 1;
  padding: 14px 16px;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.summarizer-form input[type="url"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Summarize Button */
.summarize-btn {
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.summarize-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.summarize-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.summarize-btn .spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Error Message */
.error-message {
  padding: 12px 16px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  color: var(--color-error);
  margin-top: 16px;
}

/* Results Section */
.results-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
}

.video-info {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.video-thumbnail {
  width: 200px;
  height: 112px;
  object-fit: cover;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.video-details {
  flex: 1;
}

.video-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.3;
}

.video-meta {
  display: flex;
  gap: 16px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Result Tabs */
.result-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.tab-btn {
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: -1px;
}

.tab-btn:hover {
  color: var(--color-text);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Tab Content */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.tab-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 16px;
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.copy-btn.copied {
  color: var(--color-success);
  border-color: var(--color-success);
}

/* Summary Text */
.summary-text {
  color: var(--color-text);
  line-height: 1.7;
}

.summary-text ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.summary-text li {
  padding: 10px 0;
  padding-left: 24px;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

.summary-text li:last-child {
  border-bottom: none;
}

.summary-text li::before {
  content: "•";
  position: absolute;
  left: 8px;
  color: var(--color-primary);
  font-weight: bold;
}

/* Transcript Text */
.transcript-text {
  max-height: 500px;
  overflow-y: auto;
  padding-right: 8px;
}

.transcript-line {
  display: flex;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

.transcript-line:last-child {
  border-bottom: none;
}

.transcript-time {
  font-family: monospace;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(99, 102, 241, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  height: fit-content;
  transition: all 0.2s;
}

.transcript-time:hover {
  background: rgba(99, 102, 241, 0.2);
}

.transcript-text-content {
  color: var(--color-text);
  line-height: 1.5;
}

/* Tool CTA */
.tool-cta {
  text-align: center;
  padding: 24px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
  border-radius: var(--radius-md);
}

.tool-cta p {
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.tool-cta .cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
}

.tool-cta .cta-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.tool-cta .cta-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.tool-cta .cta-btn .btn-loading {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-cta .cta-btn .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Tool Features */
.tool-features {
  margin-top: 60px;
}

.tool-features h2 {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 32px;
}

.tool-features .features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.tool-features .feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.tool-features .feature-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.tool-features .feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.tool-features .feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .tool-title {
    font-size: 1.8rem;
    flex-direction: column;
    gap: 8px;
  }

  .summarizer-form .input-row {
    flex-direction: column;
  }

  .summarize-btn {
    width: 100%;
  }

  .video-info {
    flex-direction: column;
  }

  .video-thumbnail {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9;
  }

  .tool-features .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Feature SEO Landing Pages
   ============================================ */

.source-seo-overview,
.source-expectation-section,
.related-source-tools {
  padding: 80px 24px;
}

.source-seo-overview {
  background: var(--color-background);
}

.source-copy-grid,
.source-expectation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 56px;
  align-items: start;
}

.source-copy h2,
.source-expectation-grid h2,
.related-source-tools h2 {
  font-family: var(--font-display);
  font-size: 2.25rem;
  line-height: 1.2;
  margin-bottom: 24px;
}

@media (max-width: 768px) {
  .source-copy h2,
  .source-expectation-grid h2,
  .related-source-tools h2 {
    font-size: 1.75rem;
  }
}

.source-copy p,
.source-expectation-grid > div > p {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.source-eyebrow {
  display: inline-block;
  color: var(--color-primary-light);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}

.source-check-list,
.source-expectation-card ul {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.source-check-list li,
.source-expectation-card li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 13px;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

.source-check-list li::before,
.source-expectation-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

.source-note-card,
.source-expectation-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.16);
}

.source-note-icon {
  display: block;
  font-size: 2.5rem;
  margin-bottom: 18px;
}

.source-note-card h3,
.source-expectation-card h3 {
  font-size: 1.25rem;
  margin-bottom: 18px;
}

.source-spec-list {
  margin: 0;
}

.source-spec-list > div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.source-spec-list dt {
  color: var(--color-text-muted);
}

.source-spec-list dd {
  color: var(--color-text);
  font-weight: 600;
  text-align: right;
}

.source-note {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 20px 0 0;
}

.source-use-cases {
  padding: 80px 24px;
  background: var(--color-surface);
}

.source-use-case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.source-use-case {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}

.source-use-case > span {
  display: block;
  font-size: 2rem;
  margin-bottom: 16px;
}

.source-use-case h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.source-use-case p {
  color: var(--color-text-secondary);
  font-size: 0.925rem;
  line-height: 1.65;
}

.source-expectation-section {
  background: var(--color-background);
}

.source-expectation-card h3:not(:first-child) {
  margin-top: 30px;
}

.source-expectation-card ul {
  margin-top: 0;
}

.related-source-tools {
  background: var(--color-surface);
  text-align: center;
}

.related-source-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.related-source-links a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 26px 22px;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition-fast);
}

.related-source-links a:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.related-source-links span {
  font-size: 2rem;
}

.related-source-links small {
  color: var(--color-text-muted);
  line-height: 1.45;
}

.tool-related-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 36px 0;
  padding: 24px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.tool-related-cta div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tool-related-cta span {
  color: var(--color-text-secondary);
}

@media (max-width: 900px) {
  .source-copy-grid,
  .source-expectation-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .source-use-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-source-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .source-seo-overview,
  .source-expectation-section,
  .source-use-cases,
  .related-source-tools {
    padding: 56px 20px;
  }

  .source-use-case-grid {
    grid-template-columns: 1fr;
  }

  .source-note-card,
  .source-expectation-card {
    padding: 24px;
  }

  .tool-related-cta {
    align-items: stretch;
    flex-direction: column;
  }

  .tool-related-cta .btn {
    text-align: center;
  }
}

/* Presentation ideas hub & pitch deck page */
.idea-toc {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.idea-toc a {
  color: var(--color-text);
}

.idea-toc a:hover {
  color: var(--color-primary-light);
}

.idea-hub {
  padding: 80px 24px;
  background: var(--color-surface);
}

.idea-category {
  scroll-margin-top: 90px;
}

.idea-category + .idea-category {
  margin-top: 56px;
}

.idea-category h2 {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.idea-category-intro {
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 760px;
  margin-bottom: 22px;
}

.idea-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.idea-link {
  display: block;
  height: 100%;
  padding: 14px 16px;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  line-height: 1.45;
  transition: var(--transition-fast);
}

.idea-link:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.pitch-prompt-example {
  margin: 20px 0;
  padding: 18px 20px;
  background: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md);
  color: var(--color-text);
  line-height: 1.65;
  font-style: italic;
}

.pitch-structure .source-use-case-grid {
  grid-template-columns: repeat(5, 1fr);
}

@media (max-width: 900px) {
  .idea-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .pitch-structure .source-use-case-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .idea-hub {
    padding: 56px 20px;
  }

  .idea-list,
  .pitch-structure .source-use-case-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Developers docs page (/developers)
   Scoped to .dev-docs; added with the API/MCP feature.
   ============================================ */
.dev-docs {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.dev-docs h2 {
  font-size: 1.5rem;
  color: var(--color-text);
  margin: 40px 0 12px;
  scroll-margin-top: 80px;
}

.dev-docs h3 {
  font-size: 1.0625rem;
  color: var(--color-text);
  margin: 28px 0 8px;
  scroll-margin-top: 80px;
  word-break: break-word;
}

.dev-docs p,
.dev-docs ol,
.dev-docs ul {
  margin-bottom: 16px;
}

.dev-docs ol,
.dev-docs ul {
  padding-left: 24px;
}

.dev-docs a {
  color: var(--color-primary);
}

.dev-docs code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875em;
  color: var(--color-text);
  word-break: break-word;
}

.dev-docs pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin: 0 0 16px;
  overflow-x: auto;
  max-width: 100%;
}

.dev-docs pre code {
  font-size: 0.8125rem;
  line-height: 1.6;
  white-space: pre;
  word-break: normal;
}

.dev-docs-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.dev-docs-method {
  display: inline-block;
  padding: 2px 8px;
  margin-right: 6px;
  border-radius: var(--radius-sm, 4px);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  vertical-align: middle;
}

.dev-docs-table {
  overflow-x: auto;
  margin-bottom: 16px;
}

.dev-docs-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.dev-docs-table th,
.dev-docs-table td {
  text-align: left;
  vertical-align: top;
  padding: 8px 10px;
  border-bottom: 1px solid var(--color-border);
}

.dev-docs-table th {
  color: var(--color-text);
  font-weight: 600;
}
/* End developers docs page */