/* ============================================
   FakeAIChat — Stylesheet
   ============================================ */

/* ============================================
   1. CSS Custom Properties (Design System)
   ============================================ */
:root {
  /* Core Colors */
  --bg: #0a0a0f;
  --surface: #111118;
  --surface2: #1a1a24;
  --surface3: #222230;
  --border: #2a2a3a;
  --border-hover: #3a3a5a;
  --accent: #7c5cfc;
  --accent-hover: #6a4df0;
  --accent-glow: rgba(124, 92, 252, 0.2);
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0c0;
  --text-muted: #606080;

  /* Brand Colors */
  --chatgpt-green: #10a37f;
  --chatgpt-dark: #0d0d0d;
  --gemini-blue: #4285f4;
  --gemini-dark: #1a1a2e;
  --claude-orange: #da7756;
  --claude-dark: #1a1512;
  --copilot-purple: #7b61ff;
  --copilot-dark: #0f0f1a;
  --perplexity-teal: #20b2aa;
  --perplexity-dark: #0a1628;

  /* Typography */
  --font-heading: 'Syne', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-md: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 28px;
  --font-size-2xl: 40px;

  /* Spacing & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --spacing-unit: 8px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent-hover);
}

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

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   3. Header
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-dot {
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-glow 2s infinite ease-in-out;
  box-shadow: 0 0 12px var(--accent-glow), 0 0 24px var(--accent-glow);
}

@keyframes pulse-glow {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 12px var(--accent-glow), 0 0 24px var(--accent-glow);
  }
  50% {
    opacity: 0.6;
    box-shadow: 0 0 20px var(--accent), 0 0 40px var(--accent-glow);
  }
}

.header-center {
  display: flex;
  align-items: center;
}

.tagline {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0;
}

h1.tagline, h2.section-label {
  font-family: var(--font-body);
  margin: 0;
}

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

.header-link {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.15s ease;
}

.header-link:hover {
  color: var(--text-primary);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--accent);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

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

.btn-primary.downloading {
  animation: btn-pulse 1s infinite;
  pointer-events: none;
}

@keyframes btn-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ============================================
   4. Main Layout
   ============================================ */
.main-layout {
  display: flex;
  height: calc(100vh - 60px);
  overflow: hidden;
}

.editor-panel {
  width: 380px;
  min-width: 380px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.preview-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  padding: 24px;
  overflow: hidden;
}

/* ============================================
   5. Editor Panel — Sections
   ============================================ */
.section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* ============================================
   6. Brand Selector
   ============================================ */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.brand-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}

.brand-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.brand-card.active {
  border-color: var(--accent);
  background: linear-gradient(to bottom right, var(--accent-glow), transparent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.brand-card:last-child {
  grid-column: span 2;
}

.brand-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 10px;
  color: var(--text-muted);
}

/* ============================================
   7. Message Editor
   ============================================ */
.message-input-area {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.message-textarea {
  width: 100%;
  padding: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  resize: none;
  font-size: var(--font-size-base);
  line-height: 1.5;
  transition: border-color 0.15s ease;
}

.message-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

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

.sender-toggle {
  display: flex;
  gap: 8px;
}

.sender-btn {
  flex: 1;
  padding: 10px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all 0.15s ease;
}

.sender-btn:hover {
  border-color: var(--border-hover);
}

.sender-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.btn-add-message {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 12px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all 0.15s ease;
}

.btn-add-message:hover {
  background: var(--accent-hover);
}

/* Message List */
.message-list {
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
}

.message-list::-webkit-scrollbar {
  width: 6px;
}

.message-list::-webkit-scrollbar-track {
  background: var(--surface);
}

.message-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.message-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: grab;
  transition: all 0.15s ease;
}

.message-item:hover {
  border-color: var(--border-hover);
}

.message-item.dragging {
  opacity: 0.5;
  border-color: var(--accent);
}

.message-item.drag-over {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.drag-handle {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  cursor: grab;
  user-select: none;
}

.message-sender {
  padding: 3px 8px;
  background: var(--surface3);
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.message-sender.user {
  background: var(--accent-glow);
  color: var(--accent);
}

.message-sender.ai {
  background: rgba(16, 163, 127, 0.2);
  color: var(--chatgpt-green);
}

.message-preview {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-delete-message {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--font-size-md);
  transition: all 0.15s ease;
  border-radius: 4px;
}

.btn-delete-message:hover {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.1);
}

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

/* Message animations */
@keyframes message-slide-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.message-item.new {
  animation: message-slide-in 0.15s ease;
}

/* ============================================
   8. Settings Panel
   ============================================ */
.settings-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.setting-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
}

.setting-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Custom Toggle Switch */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--surface3);
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.toggle-switch.active {
  background: var(--accent);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.toggle-switch.active::after {
  transform: translateX(20px);
}

/* Text Inputs */
.setting-input {
  width: 120px;
  padding: 8px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  transition: border-color 0.15s ease;
}

.setting-input:focus {
  outline: none;
  border-color: var(--accent);
}

.conditional-setting {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.conditional-setting.hidden {
  display: none;
}

/* ============================================
   9. Preview Panel
   ============================================ */
.preview-container {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  transition: background-color 0.2s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Preview Fade Animation */
.preview-container.fade-out {
  opacity: 0.5;
}

.preview-container.fade-in {
  opacity: 1;
}

/* Watermark */
.watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  font-size: 24px;
  font-weight: 700;
  color: rgba(128, 128, 128, 0.15);
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
  letter-spacing: 4px;
  text-transform: uppercase;
}

.watermark.hidden {
  display: none;
}

/* ============================================
   10. ChatGPT Preview Style (also used by DeepSeek)
   ============================================ */
.preview-chatgpt,
.preview-deepseek {
  background: #212121;
  font-family: 'Söhne', system-ui, -apple-system, sans-serif;
}

.preview-deepseek {
  background: #0d1117;
}

.preview-chatgpt .preview-header,
.preview-deepseek .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #2d2d2d;
  border-bottom: 1px solid #3d3d3d;
}

.preview-deepseek .preview-header {
  background: #161b22;
  border-bottom: 1px solid #30363d;
}

.preview-chatgpt .preview-header-left,
.preview-deepseek .preview-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-chatgpt .preview-title,
.preview-deepseek .preview-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: #ececec;
}

.preview-deepseek .preview-title {
  color: #f0f6fc;
}

.preview-chatgpt .preview-model,
.preview-deepseek .preview-model {
  font-size: var(--font-size-sm);
  color: #9a9a9a;
  background: #3d3d3d;
  padding: 4px 10px;
  border-radius: 6px;
}

.preview-deepseek .preview-model {
  background: #21262d;
  color: #58a6ff;
}

.preview-chatgpt .preview-header-icons,
.preview-deepseek .preview-header-icons {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #9a9a9a;
}

.preview-deepseek .preview-header-icons {
  color: #8b949e;
}

.preview-chatgpt .chat-area,
.preview-deepseek .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-chatgpt .chat-message,
.preview-deepseek .chat-message {
  margin-bottom: 24px;
}

.preview-chatgpt .chat-message.user,
.preview-deepseek .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-chatgpt .user-bubble,
.preview-deepseek .user-bubble {
  background: #2f2f2f;
  padding: 12px 16px;
  border-radius: 18px 18px 4px 18px;
  max-width: 80%;
  color: #ececec;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-deepseek .user-bubble {
  background: #1f6feb;
  color: #ffffff;
}

.preview-chatgpt .chat-message.ai,
.preview-deepseek .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-chatgpt .ai-avatar,
.preview-deepseek .ai-avatar {
  width: 28px;
  height: 28px;
  background: var(--chatgpt-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preview-deepseek .ai-avatar {
  background: #58a6ff;
}

.preview-chatgpt .ai-avatar svg,
.preview-deepseek .ai-avatar svg {
  width: 16px;
  height: 16px;
  fill: white;
}

.preview-chatgpt .ai-content,
.preview-deepseek .ai-content {
  flex: 1;
}

.preview-chatgpt .ai-label,
.preview-deepseek .ai-label {
  font-size: var(--font-size-sm);
  color: #9a9a9a;
  margin-bottom: 6px;
  font-weight: 500;
}

.preview-deepseek .ai-label {
  color: #8b949e;
}

.preview-chatgpt .ai-text,
.preview-deepseek .ai-text {
  color: #ececec;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.preview-deepseek .ai-text {
  color: #f0f6fc;
}

.preview-chatgpt .preview-input-bar,
.preview-deepseek .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-chatgpt .input-wrapper,
.preview-deepseek .input-wrapper {
  background: #2f2f2f;
  border-radius: 24px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-deepseek .input-wrapper {
  background: #21262d;
  border: 1px solid #30363d;
}

.preview-chatgpt .input-placeholder,
.preview-deepseek .input-placeholder {
  flex: 1;
  color: #8e8ea0;
  font-size: var(--font-size-base);
}

.preview-deepseek .input-placeholder {
  color: #8b949e;
}

.preview-chatgpt .send-btn,
.preview-deepseek .send-btn {
  width: 32px;
  height: 32px;
  background: #676767;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-deepseek .send-btn {
  background: #1f6feb;
}

.preview-chatgpt .send-btn svg,
.preview-deepseek .send-btn svg {
  width: 16px;
  height: 16px;
  fill: white;
}

/* ============================================
   10b. Grok Preview Style (extends ChatGPT base)
   ============================================ */
.preview-grok {
  background: #000000;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.preview-grok .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #16181c;
  border-bottom: 1px solid #2f3336;
}

.preview-grok .preview-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-grok .preview-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: #e7e9ea;
}

.preview-grok .preview-model {
  font-size: var(--font-size-sm);
  color: #1d9bf0;
  background: rgba(29, 155, 240, 0.1);
  padding: 4px 10px;
  border-radius: 16px;
}

.preview-grok .preview-header-icons {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #71767b;
}

.preview-grok .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-grok .chat-message {
  margin-bottom: 24px;
}

.preview-grok .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-grok .user-bubble {
  background: #1d9bf0;
  padding: 12px 16px;
  border-radius: 18px 18px 4px 18px;
  max-width: 80%;
  color: #ffffff;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-grok .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-grok .ai-avatar {
  width: 28px;
  height: 28px;
  background: #000000;
  border: 2px solid #2f3336;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preview-grok .ai-avatar svg {
  width: 16px;
  height: 16px;
  fill: #e7e9ea;
}

.preview-grok .ai-content {
  flex: 1;
}

.preview-grok .ai-label {
  font-size: var(--font-size-sm);
  color: #71767b;
  margin-bottom: 6px;
  font-weight: 700;
}

.preview-grok .ai-text {
  color: #e7e9ea;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.preview-grok .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-grok .input-wrapper {
  background: #16181c;
  border: 1px solid #2f3336;
  border-radius: 24px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-grok .input-placeholder {
  flex: 1;
  color: #71767b;
  font-size: var(--font-size-base);
}

.preview-grok .send-btn {
  width: 32px;
  height: 32px;
  background: #1d9bf0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-grok .send-btn svg {
  width: 16px;
  height: 16px;
  fill: white;
}

/* ============================================
   10c. Mistral Preview Style
   ============================================ */
.preview-mistral {
  background: #0f0f0f;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.preview-mistral .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #1a1a1a;
  border-bottom: 1px solid #333333;
}

.preview-mistral .preview-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-mistral .preview-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: #ffffff;
}

.preview-mistral .preview-model {
  font-size: var(--font-size-sm);
  color: #ff7000;
  background: rgba(255, 112, 0, 0.15);
  padding: 4px 10px;
  border-radius: 6px;
}

.preview-mistral .preview-header-icons {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #888888;
}

.preview-mistral .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-mistral .chat-message {
  margin-bottom: 24px;
}

.preview-mistral .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-mistral .user-bubble {
  background: #ff7000;
  padding: 12px 16px;
  border-radius: 18px 18px 4px 18px;
  max-width: 80%;
  color: #ffffff;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-mistral .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-mistral .ai-avatar {
  width: 28px;
  height: 28px;
  background: #ff7000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preview-mistral .ai-avatar svg {
  width: 16px;
  height: 16px;
  fill: white;
}

.preview-mistral .ai-content {
  flex: 1;
}

.preview-mistral .ai-label {
  font-size: var(--font-size-sm);
  color: #888888;
  margin-bottom: 6px;
  font-weight: 500;
}

.preview-mistral .ai-text {
  color: #ffffff;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.preview-mistral .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-mistral .input-wrapper {
  background: #1a1a1a;
  border: 1px solid #333333;
  border-radius: 24px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-mistral .input-placeholder {
  flex: 1;
  color: #888888;
  font-size: var(--font-size-base);
}

.preview-mistral .send-btn {
  width: 32px;
  height: 32px;
  background: #ff7000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-mistral .send-btn svg {
  width: 16px;
  height: 16px;
  fill: white;
}

/* ============================================
   10d. Kimi Preview Style
   ============================================ */
.preview-kimi {
  background: #1a1a2e;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.preview-kimi .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #16162a;
  border-bottom: 1px solid #2d2d4a;
}

.preview-kimi .preview-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-kimi .preview-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: #e8e8f0;
}

.preview-kimi .preview-model {
  font-size: var(--font-size-sm);
  color: #6366f1;
  background: rgba(99, 102, 241, 0.15);
  padding: 4px 10px;
  border-radius: 6px;
}

.preview-kimi .preview-header-icons {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #9090a8;
}

.preview-kimi .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-kimi .chat-message {
  margin-bottom: 24px;
}

.preview-kimi .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-kimi .user-bubble {
  background: #6366f1;
  padding: 12px 16px;
  border-radius: 18px 18px 4px 18px;
  max-width: 80%;
  color: #ffffff;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-kimi .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-kimi .ai-avatar {
  width: 28px;
  height: 28px;
  background: #6366f1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preview-kimi .ai-avatar svg {
  width: 16px;
  height: 16px;
  fill: white;
}

.preview-kimi .ai-content {
  flex: 1;
}

.preview-kimi .ai-label {
  font-size: var(--font-size-sm);
  color: #9090a8;
  margin-bottom: 6px;
  font-weight: 500;
}

.preview-kimi .ai-text {
  color: #e8e8f0;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.preview-kimi .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-kimi .input-wrapper {
  background: #252547;
  border: 1px solid #2d2d4a;
  border-radius: 24px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-kimi .input-placeholder {
  flex: 1;
  color: #9090a8;
  font-size: var(--font-size-base);
}

.preview-kimi .send-btn {
  width: 32px;
  height: 32px;
  background: #6366f1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-kimi .send-btn svg {
  width: 16px;
  height: 16px;
  fill: white;
}

/* ============================================
   10e. Qwen Preview Style
   ============================================ */
.preview-qwen {
  background: #0a0a14;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.preview-qwen .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #12121f;
  border-bottom: 1px solid #2a2a40;
}

.preview-qwen .preview-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.preview-qwen .preview-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: #f0f0f5;
}

.preview-qwen .preview-model {
  font-size: var(--font-size-sm);
  color: #7c3aed;
  background: rgba(124, 58, 237, 0.15);
  padding: 4px 10px;
  border-radius: 6px;
}

.preview-qwen .preview-header-icons {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #8888a0;
}

.preview-qwen .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-qwen .chat-message {
  margin-bottom: 24px;
}

.preview-qwen .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-qwen .user-bubble {
  background: #7c3aed;
  padding: 12px 16px;
  border-radius: 18px 18px 4px 18px;
  max-width: 80%;
  color: #ffffff;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-qwen .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-qwen .ai-avatar {
  width: 28px;
  height: 28px;
  background: #7c3aed;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.preview-qwen .ai-avatar svg {
  width: 16px;
  height: 16px;
  fill: white;
}

.preview-qwen .ai-content {
  flex: 1;
}

.preview-qwen .ai-label {
  font-size: var(--font-size-sm);
  color: #8888a0;
  margin-bottom: 6px;
  font-weight: 500;
}

.preview-qwen .ai-text {
  color: #f0f0f5;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.preview-qwen .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-qwen .input-wrapper {
  background: #1a1a2e;
  border: 1px solid #2a2a40;
  border-radius: 24px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-qwen .input-placeholder {
  flex: 1;
  color: #8888a0;
  font-size: var(--font-size-base);
}

.preview-qwen .send-btn {
  width: 32px;
  height: 32px;
  background: #7c3aed;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-qwen .send-btn svg {
  width: 16px;
  height: 16px;
  fill: white;
}

/* ============================================
   11. Gemini Preview Style
   ============================================ */
.preview-gemini {
  background: #1e1f20;
  font-family: 'Google Sans', 'Inter', sans-serif;
}

.preview-gemini .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: #1e1f20;
  border-bottom: 1px solid #3c4043;
}

.preview-gemini .preview-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-gemini .gemini-logo {
  width: 24px;
  height: 24px;
}

.preview-gemini .preview-title {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: #e8eaed;
}

.preview-gemini .preview-model {
  font-size: var(--font-size-sm);
  color: #9aa0a6;
  padding: 4px 12px;
  border-radius: 16px;
  border: 1px solid #3c4043;
}

.preview-gemini .preview-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.preview-gemini .user-avatar {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #4285f4, #ea4335, #fbbc05, #34a853);
  border-radius: 50%;
}

.preview-gemini .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

.preview-gemini .chat-message {
  margin-bottom: 24px;
}

.preview-gemini .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-gemini .user-bubble {
  background: #3c4043;
  padding: 14px 18px;
  border-radius: 20px;
  max-width: 80%;
  color: #e8eaed;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-gemini .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-gemini .ai-avatar {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.preview-gemini .ai-content {
  flex: 1;
}

.preview-gemini .ai-text {
  color: #e8eaed;
  font-size: var(--font-size-base);
  line-height: 1.7;
}

.preview-gemini .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

.preview-gemini .input-wrapper {
  background: #303134;
  border-radius: 28px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid #3c4043;
}

.preview-gemini .input-placeholder {
  flex: 1;
  color: #9aa0a6;
  font-size: var(--font-size-base);
}

.preview-gemini .input-icons {
  display: flex;
  gap: 12px;
  color: #9aa0a6;
}

/* ============================================
   12. Claude Preview Style
   ============================================ */
.preview-claude {
  background: #1a1612;
  font-family: 'Inter', serif;
}

.preview-claude .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: #1a1612;
  border-bottom: 1px solid #2d2520;
}

.preview-claude .preview-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-claude .claude-logo {
  width: 24px;
  height: 24px;
  fill: var(--claude-orange);
}

.preview-claude .preview-title {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: #e5ded6;
}

.preview-claude .preview-model {
  font-size: var(--font-size-xs);
  color: var(--claude-orange);
  background: rgba(218, 119, 86, 0.1);
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 500;
}

.preview-claude .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 660px;
  margin: 0 auto;
  width: 100%;
}

.preview-claude .chat-message {
  margin-bottom: 24px;
}

.preview-claude .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-claude .user-bubble {
  background: #2d2520;
  padding: 14px 18px;
  border-radius: 18px 18px 4px 18px;
  max-width: 80%;
  color: #e5ded6;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-claude .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-claude .ai-avatar {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--claude-orange);
}

.preview-claude .ai-content {
  flex: 1;
}

.preview-claude .ai-label {
  font-size: var(--font-size-sm);
  color: var(--claude-orange);
  margin-bottom: 8px;
  font-weight: 500;
}

.preview-claude .ai-text {
  color: #e5ded6;
  font-size: var(--font-size-base);
  line-height: 1.7;
}

.preview-claude .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 660px;
  margin: 0 auto;
  width: 100%;
}

.preview-claude .input-wrapper {
  background: #2d2520;
  border-radius: 16px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid #3d3530;
}

.preview-claude .input-placeholder {
  flex: 1;
  color: #8a7f76;
  font-size: var(--font-size-base);
}

.preview-claude .input-icons {
  display: flex;
  gap: 12px;
  color: #8a7f76;
}

/* ============================================
   13. Copilot Preview Style
   ============================================ */
.preview-copilot {
  background: #1b1b2e;
  font-family: 'Segoe UI', 'Inter', sans-serif;
}

.preview-copilot .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: #1b1b2e;
  border-bottom: 1px solid #2d2d42;
}

.preview-copilot .preview-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-copilot .copilot-logo {
  width: 28px;
  height: 28px;
}

.preview-copilot .preview-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  background: linear-gradient(90deg, #7b61ff, #20b2aa, #4ecdc4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.preview-copilot .ms-dots {
  display: flex;
  gap: 4px;
}

.preview-copilot .ms-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
}

.preview-copilot .ms-dot.red { background: #f25022; }
.preview-copilot .ms-dot.green { background: #7fba00; }
.preview-copilot .ms-dot.blue { background: #00a4ef; }
.preview-copilot .ms-dot.yellow { background: #ffb900; }

.preview-copilot .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-copilot .chat-message {
  margin-bottom: 20px;
}

.preview-copilot .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-copilot .user-bubble {
  background: #0078d4;
  padding: 12px 18px;
  border-radius: 18px 4px 18px 18px;
  max-width: 80%;
  color: white;
  font-size: var(--font-size-base);
  line-height: 1.5;
}

.preview-copilot .chat-message.ai {
  display: flex;
  gap: 12px;
}

.preview-copilot .ai-avatar {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.preview-copilot .ai-bubble {
  background: #2d2d42;
  padding: 14px 18px;
  border-radius: 4px 18px 18px 18px;
  max-width: 80%;
}

.preview-copilot .ai-label {
  font-size: var(--font-size-sm);
  background: linear-gradient(90deg, #7b61ff, #20b2aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
  font-weight: 600;
}

.preview-copilot .ai-text {
  color: #e8e8f0;
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.preview-copilot .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 680px;
  margin: 0 auto;
  width: 100%;
}

.preview-copilot .input-wrapper {
  background: #2d2d42;
  border-radius: 20px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid #3d3d52;
}

.preview-copilot .input-placeholder {
  flex: 1;
  color: #8888a0;
  font-size: var(--font-size-base);
}

.preview-copilot .suggestion-chips {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.preview-copilot .chip {
  padding: 6px 12px;
  background: #2d2d42;
  border-radius: 16px;
  font-size: var(--font-size-xs);
  color: #a0a0c0;
  border: 1px solid #3d3d52;
}

/* ============================================
   14. Perplexity Preview Style
   ============================================ */
.preview-perplexity {
  background: #0a1628;
  font-family: 'Inter', sans-serif;
}

.preview-perplexity .preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: #0a1628;
  border-bottom: 1px solid #1a2638;
}

.preview-perplexity .preview-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-perplexity .perplexity-logo {
  width: 24px;
  height: 24px;
}

.preview-perplexity .preview-title {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: #e8f1f8;
}

.preview-perplexity .preview-focus {
  font-size: var(--font-size-sm);
  color: var(--perplexity-teal);
  padding: 4px 12px;
  border-radius: 8px;
  border: 1px solid var(--perplexity-teal);
}

.preview-perplexity .chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}

.preview-perplexity .chat-message {
  margin-bottom: 24px;
}

.preview-perplexity .chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.preview-perplexity .user-bubble {
  background: #0d2137;
  padding: 14px 18px;
  border-radius: 10px;
  max-width: 80%;
  color: #e8f1f8;
  font-size: var(--font-size-base);
  line-height: 1.5;
  border: 1px solid #1a3050;
}

.preview-perplexity .chat-message.ai {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.preview-perplexity .ai-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.preview-perplexity .ai-avatar {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.preview-perplexity .ai-label {
  font-size: var(--font-size-md);
  color: var(--perplexity-teal);
  font-weight: 600;
}

.preview-perplexity .ai-content {
  padding-left: 34px;
  border-left: 2px solid var(--perplexity-teal);
  margin-left: 12px;
}

.preview-perplexity .ai-text {
  color: #e8f1f8;
  font-size: var(--font-size-base);
  line-height: 1.7;
  margin-bottom: 12px;
}

.preview-perplexity .sources {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.preview-perplexity .source-badge {
  padding: 4px 10px;
  background: #0d2137;
  border-radius: 6px;
  font-size: var(--font-size-xs);
  color: var(--perplexity-teal);
  border: 1px solid #1a3050;
}

.preview-perplexity .preview-input-bar {
  padding: 16px 24px 24px;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}

.preview-perplexity .input-wrapper {
  background: #0d2137;
  border-radius: 12px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid #1a3050;
}

.preview-perplexity .input-placeholder {
  flex: 1;
  color: #5a7a90;
  font-size: var(--font-size-base);
}

.preview-perplexity .focus-selector {
  padding: 6px 12px;
  background: #1a3050;
  border-radius: 8px;
  font-size: var(--font-size-xs);
  color: var(--perplexity-teal);
}

/* ============================================
   15. Message Timestamp
   ============================================ */
.message-timestamp {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
  margin-top: 6px;
}

/* ============================================
   16. Footer
   ============================================ */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
}

.footer-main {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.footer-disclaimer {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
}

.footer-links a {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--text-secondary);
}

/* ============================================
   17. How It Works Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  padding: 32px;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.modal-close:hover {
  background: var(--surface2);
  color: var(--text-primary);
}

.modal-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal-step {
  display: flex;
  gap: 16px;
}

.step-number {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: white;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: var(--font-size-md);
  color: var(--text-primary);
  margin-bottom: 4px;
}

.step-content p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================
   18. Responsive Styles
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .main-layout {
    flex-direction: column;
    height: auto;
    min-height: calc(100vh - 60px);
  }

  .editor-panel {
    width: 100%;
    min-width: 100%;
    max-height: none;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .preview-panel {
    min-height: 70vh;
  }

  .header-center {
    display: none;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .header {
    padding: 0 16px;
  }

  .tagline, .header-center {
    display: none;
  }

  .logo {
    font-size: var(--font-size-md);
  }

  .main-layout {
    display: block !important;
    height: auto !important;
    min-height: calc(100vh - 60px);
    position: relative;
    overflow: visible !important;
  }

  /* Tab Navigation for Mobile */
  .mobile-tabs {
    display: flex !important;
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
  }

  .mobile-tab {
    flex: 1;
    padding: 14px;
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
  }

  .mobile-tab.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
  }

  .editor-panel,
  .preview-panel {
    display: none;
    width: 100% !important;
    min-width: 100% !important;
    position: relative !important;
  }

  .editor-panel.active,
  .preview-panel.active {
    flex-direction: column !important;
  }
  
  .editor-panel.active {
    padding: 16px;
    gap: 16px;
    background: var(--surface);
    min-height: 50vh;
    padding-bottom: 100px;
  }
  
  .editor-panel .section {
    display: flex !important;
    flex-direction: column;
    gap: 12px;
  }
  
  .editor-panel .brand-grid {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 10px;
  }
  
  .editor-panel .brand-card {
    display: flex !important;
  }

  .preview-panel {
    padding: 16px;
    min-height: calc(100vh - 180px);
    padding-bottom: 100px;
  }
  
  .preview-container {
    min-height: 400px;
    height: auto;
    flex: 1;
    display: flex !important;
    flex-direction: column !important;
    overflow: visible !important;
    background: #212121;
  }
  
  .preview-container .chat-area {
    flex: 1;
    min-height: 250px;
    overflow-y: auto;
  }
  
  .preview-container .preview-header {
    flex-shrink: 0;
  }
  
  .preview-container .preview-input-bar {
    flex-shrink: 0;
  }

  .brand-grid {
    grid-template-columns: 1fr !important;
  }

  .brand-card:last-child {
    grid-column: span 1;
  }

  /* Fixed download button */
  .mobile-download-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    z-index: 50;
  }

  .mobile-download-bar .btn-primary {
    width: 100%;
    justify-content: center;
  }
}

/* Hide mobile elements on desktop */
@media (min-width: 769px) {
  .mobile-tabs,
  .mobile-download-bar {
    display: none;
  }
}

/* ============================================
   19. Scrollbar Styles
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--surface);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* ============================================
   20. Utility Classes
   ============================================ */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================
   21. Light Mode Preview Styles
   ============================================ */

/* ChatGPT Light Mode */
.preview-chatgpt.light-mode {
  background: #ffffff;
}

.preview-chatgpt.light-mode .preview-header {
  background: #f7f7f8;
  border-bottom: 1px solid #e5e5e5;
}

.preview-chatgpt.light-mode .preview-title {
  color: #202123;
}

.preview-chatgpt.light-mode .preview-model {
  background: #e5e5e5;
  color: #6e6e80;
}

.preview-chatgpt.light-mode .preview-header-icons {
  color: #6e6e80;
}

.preview-chatgpt.light-mode .user-bubble {
  background: #f7f7f8;
  color: #202123;
}

.preview-chatgpt.light-mode .ai-label {
  color: #6e6e80;
}

.preview-chatgpt.light-mode .ai-text {
  color: #202123;
}

.preview-chatgpt.light-mode .input-wrapper {
  background: #f7f7f8;
  border: 1px solid #e5e5e5;
}

.preview-chatgpt.light-mode .input-placeholder {
  color: #8e8ea0;
}

.preview-chatgpt.light-mode .send-btn {
  background: #d9d9e3;
}

.preview-chatgpt.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Gemini Light Mode */
.preview-gemini.light-mode {
  background: #ffffff;
}

.preview-gemini.light-mode .preview-header {
  background: #ffffff;
  border-bottom: 1px solid #e8eaed;
}

.preview-gemini.light-mode .preview-title {
  color: #202124;
}

.preview-gemini.light-mode .preview-model {
  color: #5f6368;
  border-color: #dadce0;
}

.preview-gemini.light-mode .user-bubble {
  background: #e8f0fe;
  color: #202124;
}

.preview-gemini.light-mode .ai-text {
  color: #202124;
}

.preview-gemini.light-mode .input-wrapper {
  background: #f8f9fa;
  border-color: #dadce0;
}

.preview-gemini.light-mode .input-placeholder {
  color: #5f6368;
}

.preview-gemini.light-mode .input-icons {
  color: #5f6368;
}

.preview-gemini.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Claude Light Mode */
.preview-claude.light-mode {
  background: #faf9f7;
}

.preview-claude.light-mode .preview-header {
  background: #faf9f7;
  border-bottom: 1px solid #e8e4df;
}

.preview-claude.light-mode .preview-title {
  color: #1a1512;
}

.preview-claude.light-mode .user-bubble {
  background: #f0ebe5;
  color: #1a1512;
}

.preview-claude.light-mode .ai-text {
  color: #1a1512;
}

.preview-claude.light-mode .input-wrapper {
  background: #f0ebe5;
  border-color: #e8e4df;
}

.preview-claude.light-mode .input-placeholder {
  color: #8a7f76;
}

.preview-claude.light-mode .input-icons {
  color: #8a7f76;
}

.preview-claude.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Copilot Light Mode */
.preview-copilot.light-mode {
  background: #ffffff;
}

.preview-copilot.light-mode .preview-header {
  background: #ffffff;
  border-bottom: 1px solid #e0e0e0;
}

.preview-copilot.light-mode .user-bubble {
  background: #0078d4;
  color: white;
}

.preview-copilot.light-mode .ai-bubble {
  background: #f3f3f3;
}

.preview-copilot.light-mode .ai-text {
  color: #242424;
}

.preview-copilot.light-mode .input-wrapper {
  background: #f3f3f3;
  border-color: #e0e0e0;
}

.preview-copilot.light-mode .input-placeholder {
  color: #616161;
}

.preview-copilot.light-mode .suggestion-chips .chip {
  background: #f3f3f3;
  color: #242424;
  border-color: #e0e0e0;
}

.preview-copilot.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Perplexity Light Mode */
.preview-perplexity.light-mode {
  background: #ffffff;
}

.preview-perplexity.light-mode .preview-header {
  background: #ffffff;
  border-bottom: 1px solid #e5e7eb;
}

.preview-perplexity.light-mode .preview-title {
  color: #111827;
}

.preview-perplexity.light-mode .user-bubble {
  background: #f3f4f6;
  color: #111827;
  border-color: #e5e7eb;
}

.preview-perplexity.light-mode .ai-text {
  color: #111827;
}

.preview-perplexity.light-mode .ai-content {
  border-left-color: var(--perplexity-teal);
}

.preview-perplexity.light-mode .source-badge {
  background: #f3f4f6;
  border-color: #e5e7eb;
}

.preview-perplexity.light-mode .input-wrapper {
  background: #f3f4f6;
  border-color: #e5e7eb;
}

.preview-perplexity.light-mode .input-placeholder {
  color: #6b7280;
}

.preview-perplexity.light-mode .focus-selector {
  background: #e5e7eb;
}

.preview-perplexity.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* DeepSeek Light Mode */
.preview-deepseek.light-mode {
  background: #ffffff;
}

.preview-deepseek.light-mode .preview-header {
  background: #f6f8fa;
  border-bottom: 1px solid #d0d7de;
}

.preview-deepseek.light-mode .preview-title {
  color: #24292f;
}

.preview-deepseek.light-mode .preview-model {
  background: #eaeef2;
  color: #0969da;
}

.preview-deepseek.light-mode .preview-header-icons {
  color: #57606a;
}

.preview-deepseek.light-mode .user-bubble {
  background: #0969da;
  color: #ffffff;
}

.preview-deepseek.light-mode .ai-avatar {
  background: #0969da;
}

.preview-deepseek.light-mode .ai-label {
  color: #57606a;
}

.preview-deepseek.light-mode .ai-text {
  color: #24292f;
}

.preview-deepseek.light-mode .input-wrapper {
  background: #f6f8fa;
  border-color: #d0d7de;
}

.preview-deepseek.light-mode .input-placeholder {
  color: #57606a;
}

.preview-deepseek.light-mode .send-btn {
  background: #0969da;
}

.preview-deepseek.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Grok Light Mode */
.preview-grok.light-mode {
  background: #ffffff;
}

.preview-grok.light-mode .preview-header {
  background: #f7f9f9;
  border-bottom: 1px solid #eff3f4;
}

.preview-grok.light-mode .preview-title {
  color: #0f1419;
}

.preview-grok.light-mode .preview-model {
  background: rgba(29, 155, 240, 0.1);
  color: #1d9bf0;
}

.preview-grok.light-mode .preview-header-icons {
  color: #536471;
}

.preview-grok.light-mode .user-bubble {
  background: #1d9bf0;
  color: #ffffff;
}

.preview-grok.light-mode .ai-avatar {
  background: #ffffff;
  border-color: #eff3f4;
}

.preview-grok.light-mode .ai-avatar svg {
  fill: #0f1419;
}

.preview-grok.light-mode .ai-label {
  color: #536471;
}

.preview-grok.light-mode .ai-text {
  color: #0f1419;
}

.preview-grok.light-mode .input-wrapper {
  background: #f7f9f9;
  border-color: #eff3f4;
}

.preview-grok.light-mode .input-placeholder {
  color: #536471;
}

.preview-grok.light-mode .send-btn {
  background: #1d9bf0;
}

.preview-grok.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Mistral Light Mode */
.preview-mistral.light-mode {
  background: #ffffff;
}

.preview-mistral.light-mode .preview-header {
  background: #fafafa;
  border-bottom: 1px solid #e5e5e5;
}

.preview-mistral.light-mode .preview-title {
  color: #0f0f0f;
}

.preview-mistral.light-mode .preview-model {
  background: rgba(255, 112, 0, 0.1);
  color: #ff7000;
}

.preview-mistral.light-mode .preview-header-icons {
  color: #666666;
}

.preview-mistral.light-mode .user-bubble {
  background: #ff7000;
  color: #ffffff;
}

.preview-mistral.light-mode .ai-avatar {
  background: #ff7000;
}

.preview-mistral.light-mode .ai-label {
  color: #666666;
}

.preview-mistral.light-mode .ai-text {
  color: #0f0f0f;
}

.preview-mistral.light-mode .input-wrapper {
  background: #fafafa;
  border-color: #e5e5e5;
}

.preview-mistral.light-mode .input-placeholder {
  color: #666666;
}

.preview-mistral.light-mode .send-btn {
  background: #ff7000;
}

.preview-mistral.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Kimi Light Mode */
.preview-kimi.light-mode {
  background: #ffffff;
}

.preview-kimi.light-mode .preview-header {
  background: #f8f8fc;
  border-bottom: 1px solid #e8e8f0;
}

.preview-kimi.light-mode .preview-title {
  color: #1a1a2e;
}

.preview-kimi.light-mode .preview-model {
  background: rgba(99, 102, 241, 0.1);
  color: #6366f1;
}

.preview-kimi.light-mode .preview-header-icons {
  color: #6b6b80;
}

.preview-kimi.light-mode .user-bubble {
  background: #6366f1;
  color: #ffffff;
}

.preview-kimi.light-mode .ai-avatar {
  background: #6366f1;
}

.preview-kimi.light-mode .ai-label {
  color: #6b6b80;
}

.preview-kimi.light-mode .ai-text {
  color: #1a1a2e;
}

.preview-kimi.light-mode .input-wrapper {
  background: #f8f8fc;
  border-color: #e8e8f0;
}

.preview-kimi.light-mode .input-placeholder {
  color: #6b6b80;
}

.preview-kimi.light-mode .send-btn {
  background: #6366f1;
}

.preview-kimi.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Qwen Light Mode */
.preview-qwen.light-mode {
  background: #ffffff;
}

.preview-qwen.light-mode .preview-header {
  background: #f5f5fa;
  border-bottom: 1px solid #e5e5f0;
}

.preview-qwen.light-mode .preview-title {
  color: #0a0a14;
}

.preview-qwen.light-mode .preview-model {
  background: rgba(124, 58, 237, 0.1);
  color: #7c3aed;
}

.preview-qwen.light-mode .preview-header-icons {
  color: #666680;
}

.preview-qwen.light-mode .user-bubble {
  background: #7c3aed;
  color: #ffffff;
}

.preview-qwen.light-mode .ai-avatar {
  background: #7c3aed;
}

.preview-qwen.light-mode .ai-label {
  color: #666680;
}

.preview-qwen.light-mode .ai-text {
  color: #0a0a14;
}

.preview-qwen.light-mode .input-wrapper {
  background: #f5f5fa;
  border-color: #e5e5f0;
}

.preview-qwen.light-mode .input-placeholder {
  color: #666680;
}

.preview-qwen.light-mode .send-btn {
  background: #7c3aed;
}

.preview-qwen.light-mode .message-timestamp {
  color: rgba(0, 0, 0, 0.4);
}

/* Light mode watermark adjustment */
.preview-container.light-mode .watermark {
  color: rgba(0, 0, 0, 0.08);
}

/* ============================================
   22. Customization Panel
   ============================================ */
.customization-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.custom-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.custom-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.avatar-upload {
  display: flex;
  align-items: center;
  gap: 8px;
}

.avatar-preview {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 2px solid var(--border);
}

.avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-preview.ai {
  background: var(--chatgpt-green);
  padding: 8px;
}

.avatar-preview.ai img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.avatar-initials {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--text-secondary);
}

.avatar-btn {
  padding: 6px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all 0.15s ease;
}

.avatar-btn:hover {
  background: var(--surface3);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.avatar-btn.secondary {
  padding: 6px 10px;
  color: var(--text-muted);
}

.avatar-btn.secondary:hover {
  color: #ff6b6b;
  border-color: #ff6b6b;
}

/* ============================================
   23. Template Buttons
   ============================================ */
.template-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.template-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all 0.15s ease;
}

.template-btn:hover {
  background: var(--surface3);
  border-color: var(--accent);
  color: var(--text-primary);
}

.template-icon {
  font-size: 18px;
}

.template-name {
  text-align: center;
  line-height: 1.2;
}

/* ============================================
   24. Conversation Tabs
   ============================================ */
.conversation-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.conv-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.conv-tab:hover {
  background: var(--surface3);
  border-color: var(--border-hover);
}

.conv-tab.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}

.conv-tab-name {
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.conv-tab-close {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0 2px;
}

.conv-tab-close:hover {
  color: #ff6b6b;
}

.conv-tab-add {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: var(--font-size-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

.conv-tab-add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ============================================
   25. Typing Indicator
   ============================================ */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
}

.typing-indicator .ai-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.typing-dots {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: var(--surface2);
  border-radius: 18px;
}

.typing-dots span {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typing-bounce 1.4s infinite ease-in-out both;
}

.typing-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.typing-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes typing-bounce {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Brand-specific typing indicator colors */
.preview-chatgpt .typing-indicator .ai-avatar {
  background: var(--chatgpt-green);
}

.preview-chatgpt .typing-dots {
  background: transparent;
}

.preview-chatgpt .typing-dots span {
  background: #9a9a9a;
}

.preview-gemini .typing-indicator .ai-avatar {
  background: transparent;
}

.preview-gemini .typing-dots span {
  background: var(--gemini-blue);
}

.preview-claude .typing-indicator .ai-avatar {
  background: transparent;
}

.preview-claude .typing-dots span {
  background: var(--claude-orange);
}

.preview-copilot .typing-indicator .ai-avatar {
  background: transparent;
}

.preview-copilot .typing-dots span {
  background: var(--copilot-purple);
}

.preview-perplexity .typing-indicator .ai-avatar {
  background: transparent;
}

.preview-perplexity .typing-dots span {
  background: var(--perplexity-teal);
}

/* ============================================
   26. Code Block Styling
   ============================================ */
.code-block {
  margin: 12px 0;
  border-radius: 8px;
  overflow: hidden;
  background: #1e1e1e;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: #2d2d2d;
  border-bottom: 1px solid #3d3d3d;
}

.code-language {
  font-size: 11px;
  color: #9a9a9a;
  text-transform: lowercase;
}

.code-copy {
  font-size: 11px;
  color: #9a9a9a;
  cursor: pointer;
}

.code-copy:hover {
  color: #ffffff;
}

.code-content {
  padding: 12px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  color: #d4d4d4;
}

.code-content code {
  font-family: inherit;
}

/* Syntax highlighting colors */
.code-keyword { color: #569cd6; }
.code-string { color: #ce9178; }
.code-comment { color: #6a9955; }
.code-function { color: #dcdcaa; }
.code-number { color: #b5cea8; }
.code-operator { color: #d4d4d4; }

/* Inline code */
.inline-code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9em;
}

/* Light mode code blocks */
.preview-container.light-mode .code-block {
  background: #f5f5f5;
}

.preview-container.light-mode .code-header {
  background: #e8e8e8;
  border-bottom-color: #d0d0d0;
}

.preview-container.light-mode .code-language,
.preview-container.light-mode .code-copy {
  color: #666666;
}

.preview-container.light-mode .code-content {
  color: #333333;
}

.preview-container.light-mode .inline-code {
  background: rgba(0, 0, 0, 0.08);
}

/* ============================================
   27. Markdown Rendering
   ============================================ */
.ai-text strong,
.ai-text b {
  font-weight: 600;
  color: inherit;
}

.ai-text em,
.ai-text i {
  font-style: italic;
}

.ai-text ul,
.ai-text ol {
  margin: 8px 0;
  padding-left: 24px;
}

.ai-text ul {
  list-style-type: disc;
}

.ai-text ol {
  list-style-type: decimal;
}

.ai-text li {
  margin: 4px 0;
  line-height: 1.5;
}

.ai-text p {
  margin: 8px 0;
}

.ai-text p:first-child {
  margin-top: 0;
}

.ai-text p:last-child {
  margin-bottom: 0;
}

.ai-text a {
  color: var(--accent);
  text-decoration: underline;
}

.ai-text blockquote {
  margin: 8px 0;
  padding: 8px 16px;
  border-left: 3px solid var(--accent);
  background: rgba(124, 92, 252, 0.1);
  font-style: italic;
}

.ai-text hr {
  margin: 16px 0;
  border: none;
  border-top: 1px solid var(--border);
}

.ai-text h1, .ai-text h2, .ai-text h3 {
  margin: 16px 0 8px;
  font-weight: 600;
  line-height: 1.3;
}

.ai-text h1 { font-size: 1.4em; }
.ai-text h2 { font-size: 1.2em; }
.ai-text h3 { font-size: 1.1em; }

/* ============================================
   28. Custom Avatar in Preview
   ============================================ */
.preview-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.preview-user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-user-avatar .avatar-initials {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ============================================
   29. Responsive Adjustments for New Features
   ============================================ */
@media (max-width: 768px) {
  .customization-grid {
    grid-template-columns: 1fr;
  }
  
  .template-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .conversation-tabs {
    padding: 8px 12px;
  }
  
  .conv-tab-name {
    max-width: 60px;
  }
  
  .chat-area {
    min-height: 250px;
  }
}

/* ============================================
   30. Export Menu
   ============================================ */
.export-menu {
  position: relative;
}

.export-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
}

.export-toggle .chevron {
  transition: transform 0.2s ease;
}

.export-menu.open .export-toggle .chevron {
  transform: rotate(180deg);
}

.export-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 260px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: 1000;
}

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

.export-option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.15s ease;
  text-align: left;
}

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

.export-option svg {
  flex-shrink: 0;
  color: var(--text-secondary);
}

.export-option:hover svg {
  color: var(--accent);
}

.export-option-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.export-option-text strong {
  font-size: 14px;
  font-weight: 500;
}

.export-option-text small {
  font-size: 11px;
  color: var(--text-secondary);
}

.export-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

/* Export button states */
.export-option.loading {
  opacity: 0.7;
  pointer-events: none;
}

.export-option.loading svg {
  animation: spin 1s linear infinite;
}

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

.export-option.success {
  background: rgba(16, 185, 129, 0.1);
}

.export-option.success svg {
  color: #10b981;
}

/* ============================================
   31. Share Modal
   ============================================ */
.share-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.share-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.share-modal {
  background: var(--surface);
  border-radius: 16px;
  padding: 24px;
  width: 90%;
  max-width: 500px;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.share-modal-overlay.active .share-modal {
  transform: scale(1);
}

.share-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.share-modal-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.share-modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 20px;
}

.share-modal-close:hover {
  background: var(--hover);
  color: var(--text-primary);
}

.share-url-container {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.share-url-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 13px;
  font-family: 'Monaco', 'Consolas', monospace;
}

.share-copy-btn {
  padding: 12px 20px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease;
  white-space: nowrap;
}

.share-copy-btn:hover {
  background: var(--accent-hover);
}

.share-copy-btn.copied {
  background: #10b981;
}

.share-note {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: center;
}

/* ============================================
   32. GIF Export Modal
   ============================================ */
.gif-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.gif-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.gif-modal {
  background: var(--surface);
  border-radius: 16px;
  padding: 32px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.gif-modal-overlay.active .gif-modal {
  transform: scale(1);
}

.gif-progress {
  margin: 24px 0;
}

.gif-progress-bar {
  height: 8px;
  background: var(--background);
  border-radius: 4px;
  overflow: hidden;
}

.gif-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #8b5cf6);
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s ease;
}

.gif-progress-text {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.gif-settings {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  text-align: left;
}

.gif-setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gif-setting label {
  color: var(--text-secondary);
  font-size: 14px;
}

.gif-setting select,
.gif-setting input[type="number"] {
  padding: 8px 12px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 14px;
  width: 120px;
}

.gif-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.gif-cancel-btn {
  padding: 12px 24px;
  background: var(--hover);
  border: none;
  border-radius: 8px;
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
}

.gif-start-btn {
  padding: 12px 24px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 500;
  cursor: pointer;
}

.gif-start-btn:hover {
  background: var(--accent-hover);
}

/* ============================================
   33. Mobile Export Buttons
   ============================================ */
.mobile-download-bar {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
}

.mobile-export-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
}

.mobile-export-btn:hover {
  background: var(--hover);
}

.mobile-download-bar .btn-primary {
  flex: 1.5;
}

/* Toast notifications */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 12px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 3000;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
}

.toast.error {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}