:root {
  --bg-color: #0d0d0d;
  --card-bg: #1a1a1a;
  --accent-color: #00e676; /* Bright Green */
  --accent-glow: rgba(0, 230, 118, 0.4);
  --text-primary: #ffffff;
  --text-secondary: #888888;
  --border-color: #333;
  --input-bg: #111;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    sans-serif;
}

/* Utility class for hiding elements */
.hidden {
  display: none !important;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding-top: 50px;
}

.app-container {
  width: 100%;
  max-width: 800px;
  padding: 20px;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 40px;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 30px;
}

.logo-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #1e1e1e, #2a2a2a);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Courier New", monospace;
  font-weight: bold;
  color: var(--accent-color);
  font-size: 24px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

.logo-text h1 {
  font-size: 32px;
  background: linear-gradient(to right, #fff, #888);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text p {
  color: var(--text-secondary);
  font-size: 14px;
  letter-spacing: 1px;
}

.platform-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.platform-tabs button {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
}

.platform-tabs button:hover,
.platform-tabs button.active {
  background: linear-gradient(145deg, #222, #111);
  color: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-glow);
}


.platform-tabs div.active {
    background: var(--accent-color);
    color: #000;
    font-weight: 600;
}

/* Unified Action Toolbar */
.action-toolbar {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 20px;
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    margin-top: 20px;
}

.toolbar-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.3s;
}

.toolbar-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-color);
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
}

/* AI Toggle (Compact) */
.ai-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.ai-toggle input {
    display: none;
}

.toggle-slider {
    width: 40px;
    height: 20px;
    background: #333;
    border-radius: 10px;
    position: relative;
    transition: background 0.3s;
    border: 1px solid #444;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #666;
    border-radius: 50%;
    top: 1px;
    left: 2px;
    transition: all 0.3s;
}

.ai-toggle input:checked + .toggle-slider {
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    border-color: #8b5cf6;
}

.ai-toggle input:checked + .toggle-slider::before {
    left: 21px;
    background: #fff;
}

.toggle-text {
    font-size: 14px;
    color: #ccc;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.3s;
}

.ai-toggle input:checked ~ .toggle-text {
    color: #a78bfa;
}

/* Legacy AI Toggle Container - Hide */
.ai-toggle-container {
    display: none;
}

.toggle-label {
    display: none;
}

/* Input Group */
.input-group {
  position: relative;
  margin-bottom: 30px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--input-bg);
  padding: 5px;
  display: flex;
  transition: border-color 0.3s;
}

.input-group:focus-within {
  border-color: var(--accent-color);
  box-shadow: 0 0 15px var(--accent-glow);
}

.input-group input {
  flex: 1;
  background: transparent;
  border: none;
  color: white;
  padding: 15px;
  font-size: 16px;
  outline: none;
}

.btn-primary {
  background: var(--accent-color);
  color: #000;
  border: none;
  padding: 0 25px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px var(--accent-glow);
}

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

/* Upload Area */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 40px;
  cursor: pointer;
  transition: all 0.3s;
  background: rgba(255, 255, 255, 0.02);
}

/* Extraction Progress Bar */
.extract-progress {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.extract-progress .progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.extract-progress .progress-header span {
  color: var(--accent-color);
  font-size: 14px;
}

.upload-area:hover {
  border-color: var(--accent-color);
  background: rgba(0, 230, 118, 0.05);
}

.upload-content i {
  font-size: 48px;
  margin-bottom: 15px;
  color: #555;
  transition: color 0.3s;
}

.upload-area:hover .upload-content i {
  color: var(--accent-color);
}

.upload-content p {
  font-size: 16px;
  margin-bottom: 8px;
  color: #ccc;
}

.sub-text {
  font-size: 12px;
  color: #666;
}

/* History */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  color: var(--accent-color);
}

.text-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 12px;
}

.text-btn:hover {
  color: #fff;
}

.history-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 15px;
  display: flex;
  gap: 15px;
  transition: transform 0.2s;
}

.history-item:hover {
  transform: translateX(5px);
  border-color: #444;
}

.history-icon {
  width: 40px;
  height: 40px;
  background: #000;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 16px;
}

.history-icon.douyin {
  background: #000;
  border: 1px solid #333;
}

.history-icon.bilibili {
  background: #fb7299;
  border: 1px solid #fb7299;
}

.history-icon.xhs {
  background: #fe2c55;
  border: 1px solid #fe2c55;
  font-size: 14px;
}

.history-content {
  flex: 1;
}

.history-meta {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

.history-text {
  font-size: 14px;
  color: #ddd;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ai-tag {
  display: inline-block;
  background: linear-gradient(135deg, #8b5cf6, #6366f1);
  color: #fff;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 8px;
  font-weight: bold;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 1;
  transition: opacity 0.3s;
}

.hidden {
  display: none;
  opacity: 0;
}

.modal {
  background: #151515;
  width: 90%;
  max-width: 600px;
  border-radius: 16px;
  border: 1px solid #333;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  padding: 15px 20px;
  border-bottom: 1px solid #333;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.platform-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
}

.platform-badge.douyin {
  background: rgba(0, 0, 0, 0.5);
}

.platform-badge.bilibili {
  background: rgba(251, 114, 153, 0.3);
  color: #fb7299;
}

.platform-badge.xhs {
  background: rgba(254, 44, 85, 0.3);
  color: #fe2c55;
}

.close-btn {
  background: none;
  border: none;
  color: #888;
  font-size: 24px;
  cursor: pointer;
}

.close-btn:hover {
  color: #fff;
}

.modal-body {
  padding: 20px;
  max-height: 300px;
  overflow-y: auto;
}

.content-box {
  background: #000;
  padding: 15px;
  border-radius: 8px;
  color: #ccc;
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid #333;
  white-space: pre-wrap;
}

.modal-footer {
  padding: 15px 20px;
  background: #111;
  display: flex;
  gap: 10px;
  border-top: 1px solid #333;
}

.btn-action {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #444;
  background: #222;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  transition: all 0.2s;
}

.btn-action:hover {
  background: #333;
}

.btn-action.ai-btn {
  border-color: #8b5cf6; /* Purple for AI */
  color: #d8b4fe;
  background: rgba(139, 92, 246, 0.1);
}

.btn-action.ai-btn:hover {
  background: rgba(139, 92, 246, 0.2);
}

/* Wide Modal for Comparison */
.modal.modal-wide {
  max-width: 900px;
}

/* Comparison View */
.comparison-container {
  display: flex;
  gap: 15px;
  align-items: stretch;
}

.comparison-panel {
  flex: 1;
  background: #000;
  border: 1px solid #333;
  border-radius: 8px;
  overflow: hidden;
}

.comparison-panel.optimized {
  border-color: #8b5cf6;
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.2);
}

.panel-header {
  padding: 10px 15px;
  background: #1a1a1a;
  border-bottom: 1px solid #333;
  font-size: 13px;
  color: #888;
  display: flex;
  align-items: center;
  gap: 8px;
}

.comparison-panel.optimized .panel-header {
  background: rgba(139, 92, 246, 0.1);
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.3);
}

.panel-content {
  padding: 15px;
  color: #ccc;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  max-height: 300px;
  overflow-y: auto;
}

.comparison-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #555;
  font-size: 20px;
}

/* Panel Header with Buttons */
.panel-header {
  padding: 10px 15px;
  background: #1a1a1a;
  border-bottom: 1px solid #333;
  font-size: 13px;
  color: #888;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.panel-btn {
  background: transparent;
  border: 1px solid #444;
  color: #888;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.panel-btn:hover {
  background: #333;
  color: #fff;
  border-color: #555;
}

.panel-actions {
  display: flex;
  gap: 6px;
}

.comparison-panel.optimized .panel-header {
  background: rgba(139, 92, 246, 0.1);
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.3);
}

.comparison-panel.optimized .panel-btn {
  border-color: rgba(139, 92, 246, 0.5);
  color: #a78bfa;
}

.comparison-panel.optimized .panel-btn:hover {
  background: rgba(139, 92, 246, 0.2);
}

/* AI Progress Bar */
.ai-progress {
  padding: 30px;
  text-align: center;
}

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 15px;
}

#progressStage {
  color: #a78bfa;
  font-size: 14px;
}

.cancel-btn {
  background: transparent;
  border: 1px solid #ff6b6b;
  color: #ff6b6b;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}

.cancel-btn:hover {
  background: rgba(255, 107, 107, 0.1);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #333;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 10px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #8b5cf6, #6366f1);
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s ease;
}

.progress-text {
  color: #888;
  font-size: 12px;
}

/* Empty History */
.empty-history {
  text-align: center;
  padding: 40px;
  color: #555;
  font-size: 14px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #111;
}
::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #555;
}