/* Level Up Contributor Hub CSS */

:root {
  --lu-bg: #090d16;
  --lu-surface: rgba(15, 23, 42, 0.75);
  --lu-surface-card: rgba(30, 41, 59, 0.65);
  --lu-border: rgba(148, 163, 184, 0.2);
  --lu-border-hover: rgba(34, 197, 94, 0.4);
  --lu-text: #f8fafc;
  --lu-text-muted: #94a3b8;
  --lu-accent: #22c55e;
  --lu-accent-glow: rgba(34, 197, 94, 0.25);
  --lu-accent-secondary: #3b82f6;
  --lu-gold: #f59e0b;
  --lu-gold-glow: rgba(245, 158, 11, 0.25);
  --lu-silver: #94a3b8;
  --lu-bronze: #d97706;
  --lu-card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --lu-radius-lg: 20px;
  --lu-radius-md: 14px;
  --lu-radius-sm: 8px;
}

[data-theme="light"] {
  --lu-bg: #f8fafc;
  --lu-surface: rgba(255, 255, 255, 0.9);
  --lu-surface-card: #ffffff;
  --lu-border: rgba(148, 163, 184, 0.3);
  --lu-border-hover: rgba(22, 163, 74, 0.5);
  --lu-text: #0f172a;
  --lu-text-muted: #64748b;
  --lu-accent: #16a34a;
  --lu-accent-glow: rgba(22, 163, 74, 0.15);
  --lu-accent-secondary: #2563eb;
  --lu-gold: #d97706;
  --lu-gold-glow: rgba(217, 119, 6, 0.15);
  --lu-silver: #64748b;
  --lu-bronze: #b45309;
  --lu-card-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
}

body.levelup-page {
  background: var(--lu-bg);
  color: var(--lu-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.lu-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Hero Section */
.lu-hero {
  position: relative;
  border-radius: var(--lu-radius-lg);
  background: radial-gradient(circle at 10% 20%, rgba(34, 197, 94, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 40%),
              var(--lu-surface);
  border: 1px solid var(--lu-border);
  padding: 3.5rem 2.5rem;
  text-align: center;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--lu-card-shadow);
  margin-bottom: 3rem;
  overflow: hidden;
}

.lu-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--lu-accent);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.lu-hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 1rem;
  background: linear-gradient(135deg, var(--lu-text) 30%, var(--lu-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lu-hero p {
  max-width: 720px;
  margin: 0 auto 2rem;
  color: var(--lu-text-muted);
  font-size: 1.1rem;
}

.lu-hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.lu-stat-box {
  background: var(--lu-surface-card);
  border: 1px solid var(--lu-border);
  padding: 1.25rem 1rem;
  border-radius: var(--lu-radius-md);
  text-align: center;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.lu-stat-box:hover {
  transform: translateY(-3px);
  border-color: var(--lu-border-hover);
}

.lu-stat-val {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--lu-accent);
  margin-bottom: 0.25rem;
}

.lu-stat-lbl {
  font-size: 0.85rem;
  color: var(--lu-text-muted);
  font-weight: 500;
}

.lu-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

.lu-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--lu-radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  border: none;
}

.lu-btn-primary {
  background: var(--lu-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px var(--lu-accent-glow);
}

.lu-btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

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

.lu-btn-secondary:hover {
  border-color: var(--lu-border-hover);
  transform: translateY(-2px);
}

/* Section Header */
.lu-section-header {
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1rem;
}

.lu-section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lu-section-title i {
  color: var(--lu-accent);
}

.lu-section-desc {
  color: var(--lu-text-muted);
  font-size: 0.95rem;
  margin-top: 0.4rem;
}

/* Leaderboard Section */
.lu-leaderboard-wrapper {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius-lg);
  padding: 2rem;
  margin-bottom: 3.5rem;
  backdrop-filter: blur(12px);
}

/* Podium Layout */
.lu-podium {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 1.5rem;
  margin: 2rem 0 3rem;
  padding: 0 1rem;
}

.lu-podium-card {
  flex: 1;
  max-width: 260px;
  background: var(--lu-surface-card);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius-md);
  padding: 1.5rem 1.25rem;
  text-align: center;
  position: relative;
  transition: transform 0.3s ease;
}

.lu-podium-card:hover {
  transform: translateY(-5px);
}

.lu-podium-1 {
  order: 2;
  border-color: var(--lu-gold);
  box-shadow: 0 0 25px var(--lu-gold-glow);
  transform: scale(1.05);
}

.lu-podium-1:hover {
  transform: scale(1.05) translateY(-5px);
}

.lu-podium-2 {
  order: 1;
  border-color: var(--lu-silver);
}

.lu-podium-3 {
  order: 3;
  border-color: var(--lu-bronze);
}

.lu-podium-rank {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  color: #fff;
}

.lu-podium-1 .lu-podium-rank { background: var(--lu-gold); }
.lu-podium-2 .lu-podium-rank { background: var(--lu-silver); }
.lu-podium-3 .lu-podium-rank { background: var(--lu-bronze); }

.lu-podium-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0.5rem auto 1rem;
  border: 3px solid var(--lu-border);
}

.lu-podium-1 .lu-podium-avatar { border-color: var(--lu-gold); }

.lu-podium-name {
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
}

.lu-podium-handle {
  font-size: 0.85rem;
  color: var(--lu-text-muted);
  margin-bottom: 0.75rem;
}

.lu-podium-score {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--lu-accent);
}

/* Leaderboard Controls */
.lu-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.lu-tabs {
  display: flex;
  background: var(--lu-surface-card);
  padding: 0.3rem;
  border-radius: var(--lu-radius-md);
  border: 1px solid var(--lu-border);
}

.lu-tab {
  padding: 0.5rem 1.2rem;
  border-radius: var(--lu-radius-sm);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  background: transparent;
  color: var(--lu-text-muted);
  border: none;
  transition: all 0.2s ease;
}

.lu-tab.active {
  background: var(--lu-accent);
  color: #ffffff;
}

.lu-search-box {
  position: relative;
  min-width: 240px;
}

.lu-search-box input {
  width: 100%;
  padding: 0.6rem 1rem 0.6rem 2.4rem;
  border-radius: var(--lu-radius-md);
  background: var(--lu-surface-card);
  border: 1px solid var(--lu-border);
  color: var(--lu-text);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
}

.lu-search-box input:focus {
  border-color: var(--lu-accent);
}

.lu-search-box i {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--lu-text-muted);
  font-size: 0.85rem;
}

/* Leaderboard Table */
.lu-table-responsive {
  overflow-x: auto;
  border-radius: var(--lu-radius-md);
  border: 1px solid var(--lu-border);
}

.lu-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.lu-table th {
  background: var(--lu-surface-card);
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--lu-text-muted);
  border-bottom: 1px solid var(--lu-border);
}

.lu-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--lu-border);
  vertical-align: middle;
}

.lu-table tbody tr {
  transition: background 0.15s ease;
}

.lu-table tbody tr:hover {
  background: rgba(34, 197, 94, 0.04);
}

.lu-rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.85rem;
}

.lu-user-cell {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.lu-user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.lu-user-name {
  font-weight: 600;
  display: block;
}

.lu-user-handle {
  font-size: 0.8rem;
  color: var(--lu-text-muted);
}

.lu-tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.12);
  color: var(--lu-accent-secondary);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.lu-tier-badge.tier-elite {
  background: rgba(245, 158, 11, 0.15);
  color: var(--lu-gold);
  border-color: rgba(245, 158, 11, 0.4);
}

.lu-streak-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 700;
  color: #f97316;
}

/* Level System Tiers Grid */
.lu-tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.lu-tier-card {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius-md);
  padding: 1.5rem;
  transition: transform 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.lu-tier-card:hover {
  transform: translateY(-4px);
  border-color: var(--lu-border-hover);
}

.lu-tier-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--lu-accent);
}

.lu-tier-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
}

.lu-tier-points {
  font-size: 0.85rem;
  color: var(--lu-accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.lu-tier-perks {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
  color: var(--lu-text-muted);
}

.lu-tier-perks li {
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lu-tier-perks li i {
  color: var(--lu-accent);
  font-size: 0.75rem;
}

/* Contributor Cards Grid */
.lu-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.lu-contrib-card {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius-lg);
  padding: 1.75rem;
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
}

.lu-contrib-card:hover {
  border-color: var(--lu-border-hover);
  box-shadow: 0 12px 30px -10px rgba(34, 197, 94, 0.15);
  transform: translateY(-4px);
}

.lu-card-header {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.25rem;
}

.lu-card-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--lu-accent);
}

.lu-card-userinfo h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.lu-card-userinfo p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--lu-text-muted);
}

.lu-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  background: var(--lu-surface-card);
  padding: 1rem;
  border-radius: var(--lu-radius-md);
  margin-bottom: 1.25rem;
  text-align: center;
}

.lu-cstat-num {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--lu-text);
}

.lu-cstat-lbl {
  font-size: 0.75rem;
  color: var(--lu-text-muted);
}

.lu-activity-graph {
  margin-bottom: 1.25rem;
}

.lu-activity-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--lu-text-muted);
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
}

.lu-heatmap-grid {
  display: grid;
  grid-template-columns: repeat(14, 1fr);
  gap: 3px;
}

.lu-heatmap-cell {
  aspect-ratio: 1;
  border-radius: 2px;
  background: rgba(148, 163, 184, 0.15);
}

.lu-heatmap-cell.lvl-1 { background: rgba(34, 197, 94, 0.3); }
.lu-heatmap-cell.lvl-2 { background: rgba(34, 197, 94, 0.6); }
.lu-heatmap-cell.lvl-3 { background: rgba(34, 197, 94, 0.9); }

/* Feature Impact Table */
.lu-impact-wrapper {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius-lg);
  padding: 2rem;
  backdrop-filter: blur(12px);
}

.lu-pts-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-weight: 700;
  color: var(--lu-accent);
  background: rgba(34, 197, 94, 0.12);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.82rem;
}

.lu-status-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  color: #38bdf8;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .lu-hero {
    padding: 2.5rem 1.5rem;
  }
  .lu-hero h1 {
    font-size: 2.1rem;
  }
  .lu-podium {
    flex-direction: column;
    align-items: center;
  }
  .lu-podium-card {
    width: 100%;
    max-width: 320px;
    transform: none !important;
  }
  .lu-podium-1 {
    order: 1;
  }
  .lu-podium-2 {
    order: 2;
  }
  .lu-podium-3 {
    order: 3;
  }
}

@media (max-width: 600px) {
  .lu-container {
    padding: 1rem 1rem 3rem;
  }
  .lu-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .lu-search-box {
    width: 100%;
  }
}