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

:root {
  --primary: #0EA5E9;
  --primary-dark: #0284C7;
  --secondary: #38BDF8;
  --cta: #F97316;
  --bg: #F0F9FF;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --text: #0C4A6E;
  --text-muted: #475569;
  --border: #E2E8F0;
  --success: #22C55E;
  --error: #EF4444;
  --warning: #F59E0B;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --radius: 12px;
  --transition: 0.2s ease;
}

.dark {
  --primary: #38BDF8;
  --primary-dark: #0EA5E9;
  --secondary: #7DD3FC;
  --cta: #FB923C;
  --bg: #0F172A;
  --bg-card: rgba(30, 41, 59, 0.9);
  --bg-card-hover: rgba(51, 65, 85, 0.9);
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --border: #334155;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
}

body {
  font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.navbar-brand svg { width: 24px; height: 24px; }

.navbar-search {
  flex: 1;
  max-width: 320px;
}

.navbar-search .el-input__inner {
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  height: 36px;
  font-size: 0.85rem;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  font-size: 0.9rem;
}

.nav-btn:hover { background: var(--border); }
.nav-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.theme-toggle:hover { background: var(--border); }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
.dark .theme-toggle .sun { display: block; }
.dark .theme-toggle .moon { display: none; }

/* Stats panel */
.stats-panel {
  margin-top: 76px;
  padding: 0 12px;
}

.stats-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.stats-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}

.stats-header:hover { background: var(--bg); }

.stats-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.stats-toggle-icon {
  transition: transform var(--transition);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.stats-toggle-icon.collapsed { transform: rotate(-90deg); }

.stats-body {
  padding: 0 20px 16px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.stat-item {
  text-align: center;
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Toolbar */
.toolbar {
  padding: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.toolbar-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: 4px;
  white-space: nowrap;
}

.toolbar-btn {
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.toolbar-btn:hover { background: var(--border); }
.toolbar-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 4px;
}

.toolbar-spacer { flex: 1; }

/* Content area */
.content-area {
  padding: 0 12px 12px;
}

/* Grid view */
.grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.grid-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
  cursor: pointer;
}

.grid-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.grid-card.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary);
}

.grid-card .card-checkbox {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 2;
}

.grid-card .card-like {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0,0,0,0.5);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  transition: all var(--transition);
}

.grid-card .card-like:hover { background: rgba(0,0,0,0.7); }
.grid-card .card-like.liked { color: #EF4444; }

.grid-card .card-preview {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  background: var(--border);
}

.grid-card .card-preview video,
.grid-card .card-preview audio {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.grid-card .card-preview-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--border);
  color: var(--text-muted);
  font-size: 2.5rem;
}

.grid-card .card-info {
  padding: 10px 12px;
}

.grid-card .card-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.grid-card .card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.grid-card .card-actions {
  display: flex;
  gap: 4px;
  padding: 0 12px 10px;
}

.grid-card .card-actions .action-btn {
  flex: 1;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.grid-card .card-actions .action-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.grid-card .card-actions .action-btn.danger:hover {
  background: var(--error);
  border-color: var(--error);
}

/* Waterfall view */
.waterfall-view {
  column-count: 4;
  column-gap: 16px;
}

.waterfall-item {
  break-inside: avoid;
  margin-bottom: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}

.waterfall-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.waterfall-item img {
  width: 100%;
  display: block;
}

.waterfall-item .card-info {
  padding: 10px 12px;
}

.waterfall-item .card-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.waterfall-item .card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Pagination */
.pagination-area {
  display: flex;
  justify-content: center;
  padding: 20px 12px;
}

/* Drag overlay */
.drag-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(14, 165, 233, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.drag-overlay-content {
  text-align: center;
  color: white;
}

.drag-overlay-icon {
  font-size: 80px;
  margin-bottom: 20px;
  animation: bounce 1s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.drag-overlay-text {
  font-size: 24px;
  font-weight: 600;
}

/* Upload drawer */
.upload-drawer .el-drawer__header {
  margin-bottom: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.upload-drawer .el-drawer__body {
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.upload-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.upload-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.upload-summary {
  font-size: 13px;
  color: var(--text-muted);
}

.upload-task-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 20px;
}

.upload-task-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.upload-task-item:last-child { border-bottom: none; }

.upload-task-item.success { background: rgba(34, 197, 94, 0.05); margin: 0 -20px; padding: 12px 20px; }
.upload-task-item.error { background: rgba(239, 68, 68, 0.05); margin: 0 -20px; padding: 12px 20px; }
.upload-task-item.paused { background: rgba(245, 158, 11, 0.05); margin: 0 -20px; padding: 12px 20px; }
.upload-task-item.cancelled { background: rgba(239, 68, 68, 0.03); margin: 0 -20px; padding: 12px 20px; }

.task-info {
  display: flex;
  align-items: center;
  margin-bottom: 8px;
  gap: 8px;
}

.task-status-icon { flex-shrink: 0; font-size: 16px; }
.success-icon { color: var(--success); }
.error-icon { color: var(--error); }
.uploading-icon { color: var(--primary); }
.paused-icon { color: var(--warning); }
.cancelled-icon { color: var(--error); }
.queued-icon { color: var(--text-muted); }

.task-name {
  flex: 1;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.task-size { font-size: 12px; color: var(--text-muted); flex-shrink: 0; }

.task-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
}

.task-status-text { font-size: 12px; color: var(--text-muted); }
.upload-task-item.success .task-status-text { color: var(--success); }
.upload-task-item.error .task-status-text { color: var(--error); }
.upload-task-item.paused .task-status-text { color: var(--warning); }
.upload-task-item.cancelled .task-status-text { color: var(--error); }

.task-percent { font-size: 12px; color: var(--text); }

.task-actions {
  display: flex;
  gap: 4px;
  margin-top: 8px;
  justify-content: flex-end;
}

.task-actions .el-button {
  width: 28px;
  height: 28px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.task-actions .el-button i { font-size: 12px; }

.upload-panel-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
}

.toast.show { transform: translateY(0); opacity: 1; }

/* Footer */
.footer {
  text-align: center;
  padding: 24px 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
}

.footer a:hover { text-decoration: underline; }

/* Responsive */
@media (max-width: 1200px) {
  .waterfall-view { column-count: 3; }
}

@media (max-width: 900px) {
  .waterfall-view { column-count: 2; }
  .grid-view { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

@media (max-width: 768px) {
  .navbar {
    top: 8px;
    left: 8px;
    right: 8px;
    padding: 8px 12px;
    flex-wrap: wrap;
  }

  .navbar-brand span { display: none; }
  .navbar-search { max-width: 100%; order: 10; flex-basis: 100%; }

  .stats-panel { margin-top: 120px; }

  .toolbar { gap: 6px; }
  .toolbar-label { display: none; }
  .toolbar-divider { display: none; }

  .grid-view { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
  .waterfall-view { column-count: 2; column-gap: 12px; }
  .waterfall-item { margin-bottom: 12px; }
}

@media (max-width: 480px) {
  .grid-view { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .waterfall-view { column-count: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Video Dialog */
.video-dialog {
  background: transparent !important;
  box-shadow: none !important;
}

.video-dialog .el-dialog {
  background: rgba(0, 0, 0, 0.95) !important;
  border-radius: 12px !important;
  margin: 0 auto !important;
  max-width: 90vw;
}

.video-dialog-content {
  display: flex;
  flex-direction: column;
}

.video-dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.8);
  border-radius: 12px 12px 0 0;
}

.video-title {
  color: white;
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 70%;
}

.video-nav {
  display: flex;
  gap: 8px;
}

.video-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.video-nav-btn:hover:not(:disabled) {
  background: rgba(255,255,255,0.2);
}

.video-nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.video-dialog-body {
  background: #000;
  border-radius: 0 0 12px 12px;
  overflow: hidden;
}

.video-full-player {
  width: 100%;
  max-height: 75vh;
  display: block;
}