:root {
  --bg-base: #0a0e17;
  --bg-surface: rgba(21, 28, 44, 0.75);
  --bg-surface-elevated: rgba(30, 41, 64, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 242, 254, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-teal: #00f2fe;
  --accent-blue: #38bdf8;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-purple: #a855f7;
  --accent-rose: #f43f5e;

  --gradient-glow: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-base);
  background-image: 
    radial-gradient(at 0% 0%, rgba(0, 242, 254, 0.07) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.07) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  overflow-x: hidden;
}

.app-container {
  width: 100%;
  max-width: 680px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 16px;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

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

.brand-icon {
  font-size: 26px;
  filter: drop-shadow(0 2px 8px rgba(0, 242, 254, 0.3));
}

.brand-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1.5px;
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-pill {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.pulse {
  animation: pulse-glow 2s infinite ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.refresh-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.refresh-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: rotate(180deg);
}

/* Stats Overview */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.stat-card {
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: transform 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-value {
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font-mono);
}

.highlight-amber { color: var(--accent-amber); }
.highlight-blue { color: var(--accent-blue); }
.highlight-purple { color: var(--accent-purple); }
.highlight-teal { color: var(--accent-teal); }

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  gap: 6px;
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  padding: 6px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  flex: 1;
  min-width: 75px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 8px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

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

.nav-tab.active {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15), rgba(56, 189, 248, 0.15));
  color: var(--accent-teal);
  border: 1px solid var(--border-active);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.2);
}

.tab-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--accent-amber);
  color: #000;
  display: none;
}

.tab-badge.visible {
  display: inline-block;
}

/* Content Area */
.content-area {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.tab-pane {
  display: none;
  flex-direction: column;
  gap: 14px;
  animation: fadeIn 0.25s ease-in-out;
}

.tab-pane.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.pane-header h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.pane-hint {
  font-size: 11px;
  color: var(--text-muted);
}

/* Filter pills */
.filter-pills {
  display: flex;
  gap: 6px;
}

.filter-pill {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.filter-pill.active {
  background: rgba(56, 189, 248, 0.2);
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

/* Search bar */
.search-bar {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s;
}

.search-bar:focus {
  border-color: var(--accent-teal);
}

/* Cards & Lists */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.item-card {
  background: var(--bg-surface);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.item-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-md);
}

.item-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.item-id-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.3);
  padding: 2px 6px;
  border-radius: 4px;
}

.item-body {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.tag-blue { background: rgba(56, 189, 248, 0.15); color: var(--accent-blue); }
.tag-emerald { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.tag-amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.tag-purple { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }
.tag-rose { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }
.tag-slate { background: rgba(100, 116, 139, 0.2); color: var(--text-secondary); }

/* Card Actions */
.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.btn {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: var(--accent-rose);
}

.btn-danger:hover {
  background: rgba(244, 63, 94, 0.25);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
  gap: 12px;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 36px;
}

/* Loading Spinner */
.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent-teal);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 30px auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Code Preview */
.code-preview {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #38bdf8;
  max-height: 120px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  animation: modalIn 0.25s ease-out;
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-glass);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--accent-teal);
  color: var(--text-primary);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
  z-index: 2000;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}