:root {
  --bg-page: #0f172a;
  --bg-card: #1e293b;
  --bg-surface: #1e293b;
  --bg-surface-alt: #0f172a;
  --border-subtle: #334155;
  --border-focus: #3b82f6;
  
  --text-main: #f8fafc;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  
  --accent-blue: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: #60a5fa;
  --accent-glow: rgba(59, 130, 246, 0.2);
  
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-pill: 9999px;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 2rem 1rem;
}

.app-layout {
  width: 100%;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.brand-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.header-badges {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.badge-pill {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-dim);
}

.badge-pill.highlight {
  background-color: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
  color: var(--accent-light);
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Input Section */
.section-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.url-input-wrapper {
  display: flex;
  gap: 0.5rem;
  position: relative;
}

.url-input-wrapper input {
  flex: 1;
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.url-input-wrapper input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.platforms-hint {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.pill-tag {
  background-color: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #fff;
}

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

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

.btn-secondary:hover {
  background-color: var(--border-subtle);
  color: var(--text-main);
}

.btn-success {
  background-color: var(--success);
  color: #fff;
}

.btn-success:hover {
  background-color: #059669;
}

.btn-large {
  width: 100%;
  padding: 0.85rem 1.25rem;
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Preview Card */
.preview-card {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
}

.preview-layout {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.preview-thumb-wrap {
  position: relative;
  width: 130px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #000;
  flex-shrink: 0;
}

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

.media-duration {
  position: absolute;
  bottom: 4px;
  right: 4px;
  background-color: rgba(0, 0, 0, 0.8);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.1rem 0.35rem;
  border-radius: var(--radius-sm);
  color: #fff;
}

.preview-details {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.preview-platform-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.platform-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  background-color: var(--border-subtle);
  color: var(--text-main);
}

.platform-badge.youtube {
  background-color: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.platform-badge.tiktok {
  background-color: rgba(34, 211, 238, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(34, 211, 238, 0.3);
}

.platform-badge.instagram {
  background-color: rgba(244, 63, 94, 0.2);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.uploader-name {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.media-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Options Grid */
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 500px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
}

.pill-selector {
  display: flex;
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.25rem;
  gap: 0.25rem;
}

.pill-option {
  flex: 1;
  cursor: pointer;
}

.pill-option input {
  display: none;
}

.pill-btn {
  display: block;
  text-align: center;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  transition: all 0.15s ease;
}

.pill-option input:checked + .pill-btn {
  background-color: var(--accent-blue);
  color: #fff;
  font-weight: 600;
}

.form-select {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
}

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

/* Trim Section */
.trim-section {
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.trim-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
}

.toggle-control input {
  display: none;
}

.toggle-slider {
  width: 36px;
  height: 20px;
  background-color: var(--border-subtle);
  border-radius: var(--radius-pill);
  position: relative;
  transition: background-color 0.2s ease;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background-color: #fff;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.toggle-control input:checked + .toggle-slider {
  background-color: var(--accent-blue);
}

.toggle-control input:checked + .toggle-slider::after {
  transform: translateX(16px);
}

.toggle-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.trim-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.trim-inputs {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  flex-wrap: wrap;
}

.time-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.time-field label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.time-field input {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
  color: var(--text-main);
  font-family: monospace;
  font-size: 0.85rem;
  width: 100px;
  outline: none;
}

.time-field input:focus {
  border-color: var(--border-focus);
}

.time-sep {
  align-self: flex-end;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.time-format-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* Progress & Feedback */
.progress-area {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.progress-status {
  color: var(--text-dim);
}

.progress-percentage {
  font-weight: 600;
  color: var(--accent-light);
}

.progress-track {
  width: 100%;
  height: 6px;
  background-color: var(--bg-surface-alt);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-light));
  border-radius: var(--radius-pill);
  transition: width 0.3s ease;
}

/* Completed Area */
.completed-area {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--success-bg);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.completed-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.check-icon {
  color: var(--success);
  flex-shrink: 0;
}

.completed-text {
  display: flex;
  flex-direction: column;
}

.completed-filename {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.completed-size {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding-top: 0.5rem;
}

.is-hidden {
  display: none !important;
}