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

:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f9f9f9;
  --bg-sidebar: #f9f9f9;
  --bg-hover: #ececec;
  --bg-input: #f4f4f4;
  --bg-user-bubble: #f4f4f4;
  --bg-assistant-bubble: transparent;
  --bg-card: #f4f4f4;
  --bg-card-hover: #e8e8e8;
  --bg-code: rgba(0,0,0,0.06);

  --text-primary: #1a1a1a;
  --text-secondary: #6b6b7b;
  --text-muted: #9b9ba4;
  --text-link: #10a37f;

  --border-color: #e5e5e5;
  --border-input: #d1d1d1;

  --accent: #10a37f;
  --accent-hover: #0d8c6d;
  --accent-disabled: #b8e2d4;

  --send-btn-bg: #1a1a1a;
  --send-btn-color: #fff;
  --send-btn-disabled-bg: #d1d1d1;
  --send-btn-disabled-color: #9b9ba4;

  --sidebar-width: 260px;
  --topbar-height: 52px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;

  --font: ui-sans-serif, -apple-system, "system-ui", "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
  --font-mono: 'SF Mono', 'Fira Code', Consolas, monospace;

  --transition: 0.15s ease;
  --transition-slow: 0.25s ease;
}

/* ===== Dark Theme ===== */
html[data-theme="dark"] {
  color-scheme: dark;
  --bg-primary:          #212121;
  --bg-secondary:        #181818;
  --bg-sidebar:          #171717;
  --bg-hover:            rgba(255,255,255,0.1);
  --bg-input:            #303030;
  --bg-user-bubble:      #303030;
  --bg-assistant-bubble: transparent;
  --bg-card:             #303030;
  --bg-card-hover:       #414141;
  --bg-code:             rgba(255,255,255,0.1);

  --text-primary:   #ffffff;
  --text-secondary: #f3f3f3;
  --text-muted:     #afafaf;
  --text-link:      #10a37f;

  --border-color: rgba(255,255,255,0.15);
  --border-input: rgba(255,255,255,0.2);

  --accent:          #10a37f;
  --accent-hover:    #0d8c6d;
  --accent-disabled: #1a5c4a;

  --send-btn-bg:             #ffffff;
  --send-btn-color:          #000000;
  --send-btn-disabled-bg:    #414141;
  --send-btn-disabled-color: #afafaf;
}

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.625;
  -webkit-tap-highlight-color: transparent;
}

/* ===== Layout ===== */
.app-container {
  display: flex;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--transition-slow), min-width var(--transition-slow), transform var(--transition-slow);
  z-index: 100;
}

/* Desktop collapsed state */
.sidebar-collapsed .sidebar {
  width: 0;
  min-width: 0;
}

/* Collapsed toolbar — visible when sidebar hidden */
.collapsed-toolbar {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  flex-direction: column;
  align-items: center;
  padding: 10px 6px;
  gap: 14px;
  height: 100%;
}

.collapsed-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--transition);
}

.collapsed-btn:hover {
  background: var(--bg-hover);
}

.collapsed-divider {
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: var(--border-color);
}

.sidebar-collapsed .collapsed-toolbar {
  display: flex;
}

/* Offset main content when collapsed to make room for toolbar */
.sidebar-collapsed .main-area {
  padding-left: 42px;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 10px 8px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.3px;
}

.logo:hover { color: var(--accent); }

.logo-icon {
  width: 24px;
  height: 24px;
  display: block;
}

.sidebar-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition);
  flex-shrink: 0;
}

.sidebar-toggle-btn:hover {
  background: var(--bg-hover);
}

.sidebar-toggle-btn:active {
  background: var(--border-color);
}

/* New Chat Button */
.new-chat-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 4px 8px 8px;
  padding: 8px 10px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition);
}

.new-chat-btn:hover {
  background: var(--bg-hover);
}

.new-chat-btn svg {
  color: var(--text-secondary);
  flex-shrink: 0;
}

/* Recents */
.recents-section {
  flex: 1;
  overflow-y: auto;
  padding: 4px 0;
}

.recents-section::-webkit-scrollbar { width: 4px; }
.recents-section::-webkit-scrollbar-track { background: transparent; }
.recents-section::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

.recents-label {
  padding: 8px 14px 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
}

.recents-list {
  list-style: none;
  padding: 0 6px;
}

.recents-list li {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13.5px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
  user-select: none;
}

.recents-list li:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.recents-list li.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.recents-list li {
  display: flex;
  align-items: center;
  position: relative;
}

.recents-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.recents-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition), background var(--transition);
  margin-left: 4px;
}

.recents-list li:hover .recents-menu-btn,
.recents-list li .recents-menu-btn:focus,
.recents-list li:has(.recents-popup-menu) .recents-menu-btn {
  opacity: 1;
}

.recents-menu-btn:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.recents-popup-menu {
  z-index: 200;
  background: var(--bg-primary);
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  border: 1px solid var(--border-color);
  padding: 4px 0;
  min-width: 160px;
  animation: fadeIn 0.12s ease;
}

.recents-popup-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 16px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font);
  line-height: 1.4;
  transition: background var(--transition);
  border-radius: 0;
}

.recents-popup-item:hover {
  background: var(--bg-hover);
}

.recents-popup-delete {
  color: #ef4444;
}

.recents-rename-input {
  flex: 1;
  min-width: 0;
  font-size: 13.5px;
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--bg-input);
  border: none;
  border-radius: 2px;
  padding: 6px 0;
  outline: none;
  margin: 0;
}

/* Sidebar Footer */
.sidebar-footer {
  flex-shrink: 0;
  padding: 0 6px 8px;
}

.sidebar-footer-divider {
  height: 1px;
  background: var(--border-color);
  margin: 0 10px 4px;
}

.sidebar-footer-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  font-size: 14px;
  font-family: var(--font);
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition);
  line-height: 1.4;
  width: 100%;
}

.sidebar-footer-item:hover {
  background: var(--bg-hover);
}

.sidebar-footer-item svg {
  color: var(--text-primary);
  flex-shrink: 0;
}

/* Collapsed bottom-pinned buttons — top→bottom order: Contact, FAQ, Partners, Settings */
.collapsed-contact-btn {
  position: absolute;
  bottom: 120px;
  left: 50%;
  transform: translateX(-50%);
  text-decoration: none;
}

.collapsed-faq-btn {
  position: absolute;
  bottom: 84px;
  left: 50%;
  transform: translateX(-50%);
  text-decoration: none;
}

.collapsed-partners-btn {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  text-decoration: none;
}

.collapsed-settings-btn {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
}

/* ===== Settings Modal ===== */
.settings-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: center;
}

.settings-overlay.visible {
  display: flex;
}

.settings-modal {
  display: flex;
  width: 680px;
  max-width: 90vw;
  max-height: 80vh;
  background: var(--bg-primary);
  border-radius: 16px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.settings-modal-sidebar {
  display: flex;
  flex-direction: column;
  min-width: 180px;
  border-right: 1px solid var(--border);
  background: var(--bg-secondary);
  padding: 16px 12px;
}

.settings-modal-sidebar > .settings-close-btn {
  align-self: flex-start;
  margin-bottom: 8px;
}

.settings-modal-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.settings-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 400;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.settings-nav-item:hover {
  background: var(--bg-hover);
}

.settings-nav-item.active {
  background: var(--bg-hover);
}

.settings-modal-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  min-width: 0;
}

.settings-modal-header {
  display: flex;
  align-items: center;
  padding: 20px 24px 0;
}

.settings-modal-title {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-primary);
}

.settings-close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition);
}

.settings-close-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.settings-modal-body {
  padding: 20px 24px 24px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.settings-row-label {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-primary);
}

.settings-divider {
  height: 1px;
  background: var(--border);
}

.theme-toggle {
  display: flex;
  gap: 6px;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.theme-option:hover {
  background: var(--bg-hover);
}

.theme-option.active {
  background: var(--bg-hover);
  border-color: var(--text-muted);
}

.language-select {
  padding: 6px 30px 6px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239b9ba4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.language-select:focus {
  border-color: var(--border-input);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--border-color);
  border-radius: 22px;
  transition: background var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 2px;
  bottom: 2px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition);
}

.toggle-switch input:checked + .toggle-slider {
  background: #10b981;
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(18px);
}

html[data-theme="dark"] .language-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23afafaf' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

@media (max-width: 768px) {
  .settings-modal {
    flex-direction: column;
    max-width: 95vw;
    max-height: 85vh;
  }
  .settings-modal-sidebar {
    flex-direction: row;
    align-items: center;
    min-width: 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 8px 12px;
  }
  .settings-modal-sidebar > .settings-close-btn {
    margin-bottom: 0;
    margin-right: 8px;
  }
  .settings-modal-nav {
    flex-direction: row;
    overflow-x: auto;
  }
}

/* ===== Main Area ===== */
.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-primary);
  min-width: 0;
}

/* Topbar (mobile only by default) */
.topbar {
  display: none;
  align-items: center;
  height: var(--topbar-height);
  padding: 0 12px;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-primary);
  gap: 8px;
  flex-shrink: 0;
}

.topbar-title {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-btn.new-chat-mobile-btn {
  font-size: 24px;
  font-weight: 300;
}

/* Icon button base */
.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: color var(--transition), background var(--transition);
  line-height: 1;
}

.icon-btn:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.hamburger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: background var(--transition);
}

.hamburger-btn:hover span { background: var(--text-primary); }

/* Messages Container */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0 8px;
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.messages-container::-webkit-scrollbar { width: 6px; }
.messages-container::-webkit-scrollbar-track { background: transparent; }
.messages-container::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
.messages-container::-webkit-scrollbar-thumb:hover { background: var(--border-input); }

/* Welcome Screen — when present, centers the welcome text above the input */
.welcome-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  text-align: center;
  padding: 40px 24px 20px;
  animation: fadeIn 0.4s ease;
}

/* When welcome screen is showing, let messages-container fill space so welcome-screen centers within it */
.main-area:has(.welcome-screen) .messages-container {
  padding: 0;
}

.welcome-icon { font-size: 48px; margin-bottom: 16px; }

.welcome-title {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.welcome-subtitle {
  font-size: 22px;
  font-weight: 400;
  font-family: ui-sans-serif, -apple-system, "system-ui", "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  max-width: 600px;
  line-height: 1.3;
}

.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
  max-width: 600px;
}

.suggestion-chip {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  user-select: none;
  -webkit-user-select: none;
}

.suggestion-chip:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* Message Bubbles */
.message-row {
  display: flex;
  padding: 4px 0;
  animation: fadeInUp 0.2s ease;
}

.message-row.user {
  justify-content: flex-end;
  max-width: 1100px;
  margin: 0 auto;
  padding-right: 20px;
  padding-left: 60px;
  width: 100%;
}

.message-row.assistant {
  justify-content: flex-start;
  align-items: flex-start;
  max-width: 1100px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 60px;
  width: 100%;
}

.message-bubble {
  max-width: 100%;
  padding: 10px 16px;
  border-radius: var(--radius-lg);
  font-size: 16px;
  line-height: 26px;
  color: var(--text-primary);
  word-wrap: break-word;
  white-space: pre-wrap;
}

.message-row.user .message-bubble {
  background: var(--bg-user-bubble);
  color: var(--text-primary);
  border-bottom-right-radius: 4px;
  max-width: 75%;
}

.message-row.assistant .message-bubble {
  background: var(--bg-assistant-bubble);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
  max-width: 85%;
  padding-left: 0;
}

/* Typing cursor animation */
.typing-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--text-primary);
  margin-left: 1px;
  vertical-align: text-bottom;
  animation: blink 0.7s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* Reasoning dots animation */
.reasoning-dots {
  display: inline;
  color: var(--text-muted);
  font-weight: bold;
  letter-spacing: 2px;
}

/* TTFT badge */
.ttft-badge {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 0 8px;
  border-radius: 10px;
  height: 22px;
  line-height: 22px;
  margin-left: 8px;
  margin-top: 10px;
  flex-shrink: 0;
  align-self: flex-start;
}

/* Error message */
.message-error {
  color: #f87171;
  font-size: 13px;
  padding: 8px 16px;
  margin: 4px 20px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-md);
}

/* ===== Video Carousel ===== */
.video-carousel {
  position: relative;
  width: 100%;
}

.video-carousel .video-grid {
  margin-top: 14px;
}

.video-carousel-indicators {
  display: flex;
  justify-content: flex-end;
  gap: 3px;
  height: 3px;
  pointer-events: none;
}
.video-carousel-indicator {
  width: 16px;
  height: 3px;
  background: var(--text-muted);
  opacity: 0.4;
  border-radius: 2px;
  transition: opacity 0.2s, background 0.2s;
}
.video-carousel-indicator.active {
  background: var(--text-primary);
  opacity: 0.8;
}

.video-carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  transition: background var(--transition), color var(--transition);
}

.video-carousel-arrow:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.video-carousel-arrow-left { left: -19px; }
.video-carousel-arrow-right { right: -19px; }

/* ===== xPomelo Search Link ===== */
.xpomelo-search-link {
  display: block;
  text-align: right;
  padding: 6px 12px 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.xpomelo-search-link:hover {
  color: var(--accent);
}

/* ===== Video Grid ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 14px;
  width: 100%;
}

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  text-decoration: none;
  color: var(--text-primary);
  display: block;
}

.video-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.video-card.from-knn {
  border: 1px solid rgba(168, 85, 247, 0.4);
  background: rgba(168, 85, 247, 0.08);
}

.video-card.from-knn:hover {
  background: rgba(168, 85, 247, 0.15);
}

.video-card.from-top-porn {
  border: 1px solid rgba(234, 179, 8, 0.4);
  background: rgba(234, 179, 8, 0.08);
}

.video-card.from-top-porn:hover {
  background: rgba(234, 179, 8, 0.15);
}

.video-thumb-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-hover);
}

.video-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.2s ease;
}

.video-thumb[data-loading="true"] { opacity: 0; }

.gif-preview-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-duration,
.image-count-badge {
  position: absolute;
  bottom: 6px;
  right: 6px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
  line-height: 1.4;
  letter-spacing: 0.3px;
}

.video-info {
  padding: 7px 9px 9px;
}

.video-title {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-site {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 3px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.video-domain {
  color: var(--text-secondary);
  transition: color var(--transition);
}
.video-info:hover .video-domain {
  color: var(--accent);
}

/* ===== Video Play Overlay (embeddable cards) ===== */
.video-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity 0.2s;
  cursor: pointer;
}
.video-card:hover .video-play-overlay { opacity: 1; }
.video-play-overlay svg {
  width: 38px;
  height: 38px;
  fill: rgba(255,255,255,0.8);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

/* ===== Video Modal ===== */
.video-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.video-modal {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 900px;
  overflow: hidden;
  position: relative;
}
.video-modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 1;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.6);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.video-modal-close:hover { background: rgba(0,0,0,0.8); }
.video-modal iframe {
  width: 100%;
  aspect-ratio: 16/9;
  border: none;
  display: block;
}
.video-modal-info {
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.video-modal-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}
.video-modal-source {
  font-size: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.2s;
}
.video-modal-source:hover { color: var(--accent); }

/* ===== Input Area ===== */
.input-area {
  padding: 12px 20px 8px;
  background: var(--bg-primary);
  flex-shrink: 0;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.input-wrapper {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 14px 12px 10px 16px;
  transition: border-color var(--transition);
}

.input-wrapper:focus-within {
  border-color: var(--border-input);
}

.message-input {
  width: 100%;
  min-height: 28px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  resize: none;
  max-height: 200px;
  overflow-y: auto;
  scrollbar-width: thin;
}

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

.message-input::-webkit-scrollbar { width: 3px; }
.message-input::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

/* Single-row layout when image mode is disabled via SHOW_IMAGE_MODE_OPTION */
body.no-image-mode .input-wrapper {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 12px;
}
body.no-image-mode .composer-controls,
body.no-image-mode .composer-tools { display: contents; }
body.no-image-mode .message-input {
  flex: 1;
  order: 2;
  height: 32px;
  max-height: 32px;
  min-height: 32px;
  padding: 5px 0;
  box-sizing: border-box;
  overflow-y: hidden;
}
body.no-image-mode .tools-menu { order: 1; }
body.no-image-mode .send-btn { order: 3; }

.composer-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.composer-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.send-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--send-btn-bg);
  color: var(--send-btn-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: opacity var(--transition);
}

.send-btn:hover:not(:disabled) {
  opacity: 0.8;
}

.send-btn:disabled {
  background: var(--send-btn-disabled-bg);
  color: var(--send-btn-disabled-color);
  cursor: not-allowed;
  opacity: 1;
}

.input-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  text-align: center;
}

/* Tools menu (+ button + popup) */
.tools-menu {
  position: relative;
  flex-shrink: 0;
}

.tools-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  /* Border stays transparent until hover for a cleaner resting look */
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition), opacity var(--transition);
}

.tools-btn:hover:not(:disabled) {
  background: var(--bg-hover);
  border-color: var(--border-color);
}

.tools-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.tools-popup {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 4px;
  z-index: 100;
}

.tools-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
  text-align: left;
  border-radius: 8px;
  cursor: pointer;
}

.tools-item:hover {
  background: var(--bg-hover);
}

.tools-item-icon {
  flex-shrink: 0;
}

.tools-item span {
  flex: 1;
}

.tools-check {
  opacity: 0;
  color: var(--text-primary);
  flex-shrink: 0;
}

.tools-item.active .tools-check {
  opacity: 1;
}

/* Active-mode chip */
.mode-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 4px 4px 8px;
  background: var(--bg-hover);
  border-radius: 14px;
  font-size: 13px;
  color: var(--text-primary);
  flex-shrink: 0;
  max-width: 100%;
}

.mode-chip[hidden] {
  display: none;
}

.mode-chip-icon {
  flex-shrink: 0;
}

.mode-chip:not([data-mode="video"]) .mode-chip-icon-video,
.mode-chip:not([data-mode="image"]) .mode-chip-icon-image,
.mode-chip:not([data-mode="gif"]) .mode-chip-icon-gif {
  display: none;
}

.mode-chip-close {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.mode-chip-close[hidden] {
  display: none;
}

.mode-chip-close:hover:not(:disabled) {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.mode-chip-close:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== Mobile Overlay ===== */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
  backdrop-filter: blur(2px);
}

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    min-width: 0;
    height: 100vh;
    height: 100dvh;
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0,0,0,0.4);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.visible {
    display: block;
  }


  .topbar {
    display: flex;
  }

  .message-row.user { padding-right: 12px; padding-left: 40px; }
  .message-row.assistant { padding-left: 12px; padding-right: 40px; }
  .message-row.user .message-bubble { max-width: 85%; }
  .message-row.assistant .message-bubble { max-width: 95%; }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .video-modal-backdrop { padding: 0; align-items: flex-start; padding-top: 48px; }
  .video-modal { max-width: 100%; border-radius: 0; }
  .video-play-overlay { opacity: 1; background: rgba(0,0,0,0.2); }

  .composer-controls {
    gap: 8px;
  }

  .composer-tools {
    overflow-x: auto;
    scrollbar-width: none;
  }

  .composer-tools::-webkit-scrollbar {
    display: none;
  }

  .input-area { padding: 10px 12px calc(14px + env(safe-area-inset-bottom, 0px)); }
  .welcome-title { font-size: 22px; }
}

@media (max-width: 480px) {
  .video-grid { gap: 6px; }
  .video-title { font-size: 11.5px; }
}

/* ===== Prose within assistant bubbles ===== */
.message-bubble p { margin-bottom: 0.75em; }
.message-bubble p:last-child { margin-bottom: 0; }
.message-bubble strong { font-weight: 600; }
.message-bubble em { font-style: italic; }
.message-bubble code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-code);
  padding: 1px 5px;
  border-radius: 4px;
}
.message-bubble ul, .message-bubble ol {
  padding-left: 1.4em;
  margin-bottom: 0.75em;
}
.message-bubble li { margin-bottom: 0.25em; }

/* ===== Find Person ===== */
.user-image-msg { max-width: 240px; max-height: 240px; border-radius: 12px; display: block; }
.find-person-bio { max-height: 320px; overflow-y: auto; overflow-wrap: anywhere; margin-bottom: 12px; }
.find-person-link { display: inline-block; margin-top: 8px; }