:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-hover: #334155;
  --border: #334155;
  --text: #f1f5f9;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.15);
  --yellow: #eab308;
  --yellow-bg: rgba(234, 179, 8, 0.15);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.15);
  --blue: #3b82f6;
  --blue-bg: rgba(59, 130, 246, 0.15);
  --radius: 8px;
}

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

html {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  line-height: 1.6;
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: #60a5fa;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.nav {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo span {
  color: var(--green);
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-dim);
  padding: 0.5rem 0.875rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--bg-hover);
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  text-align: left;
  padding: 0.875rem 1rem;
  background: var(--bg-card);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
}

th:hover {
  color: var(--text);
}

th.sorted-asc::after {
  content: ' ↑';
  color: var(--green);
}

th.sorted-desc::after {
  content: ' ↓';
  color: var(--green);
}

td {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  vertical-align: middle;
}

tbody tr {
  transition: background 0.1s ease;
}

tbody tr:hover {
  background: rgba(51, 65, 85, 0.3);
}

/* Score badges */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0.25rem 0.625rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem;
}

.badge-green {
  background: var(--green-bg);
  color: var(--green);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge-yellow {
  background: var(--yellow-bg);
  color: var(--yellow);
  border: 1px solid rgba(234, 179, 8, 0.3);
}

.badge-red {
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

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

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto;
}

/* Section */
.section {
  padding: 2rem 0;
}

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

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
}

/* Filters */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.4rem 0.875rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.filter-btn.active {
  background: var(--blue-bg);
  border-color: var(--blue);
  color: #60a5fa;
}

/* Powered by badge */
.powered-by {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.375rem 0.75rem;
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.powered-by strong {
  color: var(--green);
}

/* Stats */
.stat-card {
  text-align: center;
}

.stat-card .stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.stat-card .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-card .stat-sub {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 3rem;
}

.footer a {
  color: var(--text-dim);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-inner {
    flex-direction: column;
    gap: 0.5rem;
  }
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero {
    padding: 2rem 0 1.5rem;
  }
  .section-header {
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-start;
  }
  td, th {
    padding: 0.5rem 0.625rem;
    font-size: 0.8rem;
  }
  .hide-mobile {
    display: none;
  }
}

/* Trend arrows */
.trend-up { color: var(--green); }
.trend-down { color: var(--red); }
.trend-flat { color: var(--text-muted); }

/* Skeleton loading */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Issue tags */
.issue-tag {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.issue-fake {
  background: var(--red-bg);
  color: var(--red);
}

.issue-low-verified {
  background: var(--yellow-bg);
  color: var(--yellow);
}

.issue-velocity {
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
}