:root {
  --bg-primary: #0d0d1a;
  --bg-secondary: #13132b;
  --bg-card: #1a1a35;
  --bg-input: #1e1e3f;
  --bg-hover: #252550;
  --text-primary: #eaeaea;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --accent: #f97316;
  --accent-hover: #fb923c;
  --border: #2a2a4a;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --transition: 0.2s ease;
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-icon {
  width: 32px;
  height: 32px;
}

.header h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.server-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background var(--transition);
}

.status-dot.online {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* Theme Switcher */
.theme-switcher {
  position: relative;
}

.theme-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  transition: all var(--transition);
}

.theme-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.theme-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  z-index: 100;
  min-width: 160px;
  box-shadow: var(--shadow);
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition);
}

.theme-option:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.theme-option.active {
  background: var(--accent);
  color: white;
}

.theme-option .color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.3);
}

/* Navigation */
.nav-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 4px;
  border: 1px solid var(--border);
}

.nav-tab {
  flex: 1;
  padding: 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
}

.nav-tab:hover {
  color: var(--text-secondary);
  background: var(--bg-hover);
}

.nav-tab.active {
  background: var(--bg-card);
  color: var(--accent);
}

/* Search Panel */
.search-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.search-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.1);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: transparent;
  color: #ef4444;
  border: 1px solid #ef4444;
}

.btn-danger:hover {
  background: #ef4444;
  color: white;
}

.options-row {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.option-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.option-group label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.option-input {
  width: 60px;
  padding: 6px 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 13px;
  text-align: center;
  outline: none;
}

.option-input:focus {
  border-color: var(--accent);
}

.source-toggles {
  display: flex;
  gap: 8px;
}

.source-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-muted);
  transition: all var(--transition);
}

.source-toggle.active {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
}

.source-toggle:hover:not(.active) {
  border-color: var(--accent);
}

/* Progress */
.progress-section {
  margin-bottom: 20px;
  display: none;
}

.progress-section.active {
  display: block;
}

.progress-bar-container {
  height: 6px;
  background: var(--bg-card);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0%;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

/* Results Grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition);
}

.result-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.result-card .thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
  background: var(--bg-input);
}

.result-card .info {
  padding: 10px;
}

.result-card .filename {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.result-card .meta {
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--text-muted);
}

/* Source Badge */
.source-badge {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.3;
}

/* Log */
.log-container {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  max-height: 400px;
  overflow-y: auto;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 12px;
  line-height: 1.8;
}

.log-entry {
  margin-bottom: 2px;
}

.log-info {
  color: var(--text-secondary);
}

.log-success {
  color: #22c55e;
}

.log-error {
  color: #ef4444;
}

.log-warning {
  color: #f59e0b;
}

.log-accent {
  color: var(--accent);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Source Sections */
.results-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.source-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.source-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 4px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 8px;
}

.source-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: capitalize;
}

.count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 24px;
  padding: 0 6px;
  background: var(--accent);
  color: white;
  font-size: 11px;
  font-weight: 700;
  border-radius: 12px;
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.flat-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

/* Responsive */
@media (max-width: 640px) {
  .app {
    padding: 12px;
  }

  .search-row {
    flex-direction: column;
  }

  .options-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .results-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .source-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .flat-results {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .nav-tabs {
    flex-wrap: wrap;
  }
}