:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #111726;
  --bg-card: rgba(22, 30, 48, 0.75);
  --bg-card-hover: rgba(28, 38, 60, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 0, 51, 0.5);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-red: #ff0033;
  --accent-red-hover: #e6002e;
  --accent-gradient: linear-gradient(135deg, #ff0033 0%, #ff4d6d 100%);
  --accent-cyan: #00e5ff;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-purple: #8b5cf6;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
  --shadow-glow: 0 0 25px rgba(255, 0, 51, 0.25);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(255, 0, 51, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(0, 229, 255, 0.04) 0%, transparent 40%);
  background-attachment: fixed;
}

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Header */
header {
  border-bottom: 1px solid var(--border-color);
  background: rgba(10, 13, 20, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 2.25rem;
  height: 2.25rem;
  background: var(--accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.brand-icon svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: white;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: linear-gradient(to right, #fff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-badge {
  font-size: 0.7rem;
  background: rgba(255, 0, 51, 0.15);
  color: #ff4d6d;
  border: 1px solid rgba(255, 0, 51, 0.3);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 600;
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(255, 0, 51, 0.3);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 0, 51, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Cards & Layout */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent-red);
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-control {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.input-control:focus {
  border-color: var(--accent-red);
  box-shadow: 0 0 0 3px rgba(255, 0, 51, 0.2);
  background: rgba(15, 23, 42, 0.9);
}

.input-action-btn {
  position: absolute;
  right: 0.5rem;
}

/* Custom Downloader Box */
.url-search-box {
  display: flex;
  gap: 0.75rem;
}

.url-search-box .input-control {
  flex: 1;
}

/* Metadata Preview Card */
.metadata-preview {
  display: flex;
  gap: 1.25rem;
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.25rem;
  align-items: flex-start;
}

.metadata-thumb-box {
  width: 180px;
  min-width: 180px;
  height: 105px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #000;
  position: relative;
}

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

.metadata-duration-badge {
  position: absolute;
  bottom: 0.35rem;
  right: 0.35rem;
  background: rgba(0, 0, 0, 0.8);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.metadata-info {
  flex: 1;
  min-width: 0;
}

.metadata-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.metadata-channel {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.metadata-actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

/* Options Grid */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.select-control {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
}

.select-control:focus {
  border-color: var(--accent-red);
}

/* Bookmarklet Item */
.bookmarklet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.bookmarklet-item {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.bookmarklet-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.bookmarklet-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.bookmarklet-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  flex: 1;
}

.bookmarklet-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.bookmarklet-drag-link {
  background: rgba(255, 255, 255, 0.08);
  border: 1px dashed rgba(255, 255, 255, 0.3);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  cursor: grab;
  user-select: none;
}

.bookmarklet-drag-link:hover {
  background: rgba(255, 0, 51, 0.15);
  border-color: var(--accent-red);
  color: #ff4d6d;
}

/* Progress bar */
.progress-container {
  margin-top: 1rem;
  background: rgba(15, 23, 42, 0.8);
  border-radius: 9999px;
  height: 0.5rem;
  overflow: hidden;
  position: relative;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent-gradient);
  border-radius: 9999px;
  transition: width 0.3s ease;
}

.progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Cookie Status */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-active {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-inactive {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 100;
}

.toast {
  background: rgba(17, 23, 38, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-card);
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: 360px;
}

.toast-success {
  border-left: 4px solid var(--accent-green);
}

.toast-error {
  border-left: 4px solid var(--accent-red);
}

.toast-info {
  border-left: 4px solid var(--accent-cyan);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(5, 7, 12, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 90;
  padding: 1.5rem;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-card);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hidden {
  display: none !important;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .url-search-box {
    flex-direction: column;
  }
  .metadata-preview {
    flex-direction: column;
  }
  .metadata-thumb-box {
    width: 100%;
    height: 180px;
  }
  .options-grid {
    grid-template-columns: 1fr;
  }
}