:root[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #334155;
  --glass: rgba(30, 41, 59, 0.7);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.3);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}

:root[data-theme="light"] {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-hover: #f1f5f9;
  --glass: rgba(255, 255, 255, 0.8);
  --border: rgba(0, 0, 0, 0.08);
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37, 99, 235, 0.2);
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
}

:root[data-theme="cyberpunk"] {
  --bg: #0d0221;
  --surface: #190a38;
  --surface-hover: #2a125c;
  --glass: rgba(25, 10, 56, 0.8);
  --border: rgba(0, 240, 255, 0.3);
  --text: #00f0ff;
  --text-muted: #ff007f;
  --accent: #ff007f;
  --accent-hover: #d9006c;
  --accent-glow: rgba(255, 0, 127, 0.4);
  --success: #00ff66;
  --warning: #ffcc00;
  --danger: #ff0055;
}

:root[data-theme="nord"] {
  --bg: #2e3440;
  --surface: #3b4252;
  --surface-hover: #434c5e;
  --glass: rgba(59, 66, 82, 0.8);
  --border: rgba(218, 224, 233, 0.15);
  --text: #eceff4;
  --text-muted: #d8dee9;
  --accent: #88c0d0;
  --accent-hover: #81a1c1;
  --accent-glow: rgba(136, 192, 208, 0.3);
  --success: #a3be8c;
  --warning: #ebcb8b;
  --danger: #bf616a;
}

:root[data-theme="matrix"] {
  --bg: #000a00;
  --surface: #031703;
  --surface-hover: #072e07;
  --glass: rgba(3, 23, 3, 0.8);
  --border: rgba(0, 255, 65, 0.3);
  --text: #00ff41;
  --text-muted: #008f11;
  --accent: #00ff41;
  --accent-hover: #00cc33;
  --accent-glow: rgba(0, 255, 65, 0.4);
  --success: #00ff41;
  --warning: #ffcc00;
  --danger: #ff3333;
}

:root[data-theme="ocean"] {
  --bg: #04121a;
  --surface: #0a2536;
  --surface-hover: #103850;
  --glass: rgba(10, 37, 54, 0.8);
  --border: rgba(0, 188, 212, 0.3);
  --text: #e0f7fa;
  --text-muted: #80deea;
  --accent: #00bcd4;
  --accent-hover: #00acc1;
  --accent-glow: rgba(0, 188, 212, 0.4);
  --success: #26a69a;
  --warning: #ffa726;
  --danger: #ef5350;
}

:root[data-theme="dracula"] {
  --bg: #282a36;
  --surface: #343746;
  --surface-hover: #44475a;
  --glass: rgba(52, 55, 70, 0.8);
  --border: rgba(189, 147, 249, 0.3);
  --text: #f8f8f2;
  --text-muted: #6272a4;
  --accent: #ff79c6;
  --accent-hover: #ff92d0;
  --accent-glow: rgba(255, 121, 198, 0.4);
  --success: #50fa7b;
  --warning: #f1fa8c;
  --danger: #ff5555;
}

:root[data-theme="gruvbox"] {
  --bg: #282828;
  --surface: #3c3836;
  --surface-hover: #504945;
  --glass: rgba(60, 56, 54, 0.8);
  --border: rgba(250, 189, 47, 0.3);
  --text: #ebdbb2;
  --text-muted: #a89984;
  --accent: #d79921;
  --accent-hover: #fabd2f;
  --accent-glow: rgba(215, 153, 33, 0.4);
  --success: #b8bb26;
  --warning: #fabd2f;
  --danger: #fb4934;
}

:root[data-theme="synthwave"] {
  --bg: #1a102f;
  --surface: #2b1b4d;
  --surface-hover: #3d276b;
  --glass: rgba(43, 27, 77, 0.8);
  --border: rgba(255, 113, 206, 0.35);
  --text: #fdfefe;
  --text-muted: #b9a9d9;
  --accent: #ff71ce;
  --accent-hover: #01cdfe;
  --accent-glow: rgba(255, 113, 206, 0.4);
  --success: #05ffa1;
  --warning: #fffb96;
  --danger: #ff2a6d;
}

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

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
  padding-bottom: 2rem;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.logo-icon {
  font-size: 2rem;
  line-height: 1;
}

.logo-title {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.controls-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.search-input {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  width: 220px;
  outline: none;
  transition: all 0.2s ease;
}

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

.btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: transparent;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 12px var(--accent-glow);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}

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

.category-bar {
  padding: 1rem 2rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.pill {
  padding: 0.4rem 1rem;
  border-radius: 20px;
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.pill.active, .pill:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

main {
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.grid-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.list-view {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.site-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.site-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

.list-view .site-card {
  flex-direction: row;
  align-items: center;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.site-icon {
  font-size: 2.2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border-radius: 10px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.site-info {
  flex-grow: 1;
  overflow: hidden;
}

.site-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-category {
  display: inline-block;
  font-size: 0.75rem;
  background: var(--bg);
  color: var(--accent);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
  margin-top: 0.25rem;
}

.site-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.list-view .site-desc {
  margin-bottom: 0;
  margin-right: 1rem;
  -webkit-line-clamp: 1;
}

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

/* Modal styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 90%;
  max-width: 540px;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;

}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  background: var(--bg);
  transition: all 0.2s ease;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: var(--surface-hover);
}

.dropzone-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

/* Category Group Sections */
.category-section {
  margin-bottom: 2.5rem;
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.category-header:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
}

.category-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.category-badge {
  background: var(--bg);
  color: var(--accent);
  font-size: 0.8rem;
  padding: 0.2rem 0.65rem;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid var(--border);
}

.collapse-icon {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.category-section.collapsed .grid-view,
.category-section.collapsed .list-view {
  display: none;
}

.category-section.collapsed .collapse-icon {
  transform: rotate(-90deg);
}