:root {
  --lb-bg: #f8fafc;
  --lb-surface: #ffffff;
  --lb-surface-soft: #f8fafc;
  --lb-border: #e2e8f0;
  --lb-border-strong: #cbd5e1;
  --lb-text: #0f172a;
  --lb-muted: #64748b;
  --lb-muted-soft: #94a3b8;
  --lb-accent: #111827;
  --lb-accent-soft: #eef2f7;
  --lb-gold-soft: #fff8eb;
  --lb-silver-soft: #f8fafc;
  --lb-bronze-soft: #fff7f1;
  --lb-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.leaderboard-page {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", sans-serif;
  color: var(--lb-text);
  background: var(--lb-bg);
}

.leaderboard-shell,
.leaderboard-shell * {
  box-sizing: border-box;
}

.leaderboard-page .nav-bottom a,
.leaderboard-page .nav-bottom a span {
  white-space: nowrap;
}

.leaderboard-shell {
  max-width: 1180px;
  margin: 30px auto 64px;
  padding: 0 4%;
}

.leaderboard-hero,
.insight-card,
.panel-card,
.podium-card,
.table-shell,
.hero-stat-card,
.empty-state,
.login-state {
  background: var(--lb-surface);
  border: 1px solid var(--lb-border);
  box-shadow: var(--lb-shadow);
}

.leaderboard-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.95fr);
  gap: 24px;
  padding: 32px;
  border-radius: 24px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-self: center;
}

.hero-kicker,
.panel-eyebrow {
  width: fit-content;
  margin: 0;
  padding: 0.42rem 0.72rem;
  border-radius: 999px;
  border: 1px solid var(--lb-border-strong);
  background: var(--lb-surface-soft);
  color: var(--lb-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h2,
.panel-head h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

.hero-copy h2 {
  max-width: 13ch;
  font-size: clamp(2rem, 3vw, 3.15rem);
  line-height: 1.02;
}

.hero-text,
.insight-meta,
.panel-head p,
.hero-stat-card p,
.login-state p,
.empty-state p {
  margin: 0;
  color: var(--lb-muted);
  line-height: 1.65;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-stat-card {
  padding: 18px;
  border-radius: 18px;
  background: var(--lb-surface-soft);
}

.hero-stat-card span,
.insight-label {
  display: block;
  margin: 0;
  color: var(--lb-muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(1.3rem, 2vw, 1.85rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.hero-stat-card.wide {
  grid-column: 1 / -1;
}

.hero-stat-card.wide p {
  margin-top: 8px;
  font-size: 0.96rem;
}

.insight-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.insight-card {
  padding: 20px;
  border-radius: 18px;
}

.insight-card h3 {
  margin: 12px 0 6px;
  font-size: 1.3rem;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.ranking-panel {
  margin-top: 18px;
  padding: 22px;
  border-radius: 24px;
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.panel-controls {
  display: grid;
  gap: 12px;
  justify-items: end;
}

.filter-group {
  display: grid;
  gap: 8px;
  justify-items: end;
}

.filter-label {
  color: var(--lb-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-head p {
  margin-top: 8px;
}

.sort-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sort-chip {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--lb-border);
  background: var(--lb-surface);
  color: var(--lb-muted);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition:
    border-color 0.16s ease,
    background-color 0.16s ease,
    color 0.16s ease;
}

.sort-chip:hover {
  border-color: var(--lb-border-strong);
  color: var(--lb-text);
}

.sort-chip.active {
  border-color: var(--lb-accent);
  background: var(--lb-accent);
  color: #ffffff;
}

.leaderboard-content {
  display: grid;
  gap: 18px;
}

.podium-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.podium-card {
  padding: 18px;
  border-radius: 18px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.podium-card > * {
  position: relative;
  z-index: 1;
}

.podium-card.rank-1 {
  background: linear-gradient(180deg, var(--lb-surface) 0%, var(--lb-gold-soft) 100%);
}

.podium-card.rank-2 {
  background: linear-gradient(180deg, var(--lb-surface) 0%, var(--lb-silver-soft) 100%);
}

.podium-card.rank-3 {
  background: linear-gradient(180deg, var(--lb-surface) 0%, var(--lb-bronze-soft) 100%);
}

.podium-card.has-shop-background {
  background: var(--shop-surface-gradient, var(--lb-surface));
  border-color: var(--shop-surface-border, var(--lb-border));
  color: var(--shop-accent-color, var(--lb-text));
}

.podium-card.has-shop-background .podium-rank {
  border-color: color-mix(in srgb, var(--shop-accent-color, var(--lb-text)) 18%, transparent);
  background: rgba(255, 255, 255, 0.22);
  color: var(--shop-accent-color, var(--lb-text));
  backdrop-filter: blur(10px);
}

.podium-card.has-shop-background .podium-score {
  color: var(--shop-accent-color, var(--lb-text));
}

.podium-card.has-shop-background .podium-sub,
.podium-card.has-shop-background .podium-group {
  color: var(--lb-muted);
  color: color-mix(in srgb, var(--shop-accent-color, var(--lb-text)) 72%, transparent);
}

.leaderboard-background-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  pointer-events: none;
  z-index: 0;
}

.podium-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  min-height: 2.2rem;
  margin-bottom: 14px;
  padding: 0 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--lb-border);
  background: rgba(255, 255, 255, 0.82);
  color: var(--lb-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.podium-head,
.student-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.podium-copy {
  min-width: 0;
}

.podium-name-row,
.student-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-width: 0;
}

.student-avatar-shell {
  --avatar-size: 42px;
  --avatar-frame-size: 58px;
  --shop-frame-accent: transparent;
  --shop-frame-width: 0px;
  --shop-effect-glow: transparent;
  --shop-effect-blur: 0px;
  --shop-effect-animation: none;
  flex: 0 0 auto;
  width: var(--avatar-frame-size);
  height: var(--avatar-frame-size);
  position: relative;
  display: inline-grid;
  place-items: center;
  isolation: isolate;
}

.student-avatar-shell::before {
  content: "";
  position: absolute;
  inset: -10px;
  border-radius: 999px;
  background: radial-gradient(circle at center, var(--shop-effect-glow) 0%, transparent 68%);
  filter: blur(var(--shop-effect-blur));
  animation: var(--shop-effect-animation);
  z-index: 0;
  pointer-events: none;
}

.student-avatar {
  width: var(--avatar-size);
  height: var(--avatar-size);
  border-radius: 50%;
  background: var(--lb-accent);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.92rem;
  font-weight: 800;
  overflow: hidden;
  position: relative;
  z-index: 2;
  box-shadow:
    0 0 0 var(--shop-frame-width) var(--shop-frame-accent),
    0 0 20px var(--shop-effect-glow),
    0 10px 20px rgba(15, 23, 42, 0.08);
}

.student-avatar.has-photo {
  background: #e2e8f0;
  color: transparent;
}

.student-avatar img,
.student-avatar video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.student-avatar-shell > .shop-frame-media-layer {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--avatar-frame-size);
  height: var(--avatar-frame-size);
  transform: translate(-50%, -50%);
  object-fit: cover;
  border-radius: 999px;
  pointer-events: none;
  z-index: 1;
}

.podium-avatar {
  --avatar-size: 54px;
  --avatar-frame-size: 74px;
}

.podium-avatar .student-avatar {
  font-size: 1rem;
}

.table-avatar {
  --avatar-size: 40px;
  --avatar-frame-size: 56px;
}

.podium-name {
  font-size: 1.18rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.podium-group {
  color: var(--lb-muted);
  font-size: 0.93rem;
}

.podium-score {
  margin-top: 16px;
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
}

.podium-sub {
  margin-top: 8px;
  color: var(--lb-muted);
  font-size: 0.9rem;
}

.table-shell {
  overflow: hidden;
  border-radius: 18px;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 15px 16px;
  text-align: left;
  border-bottom: 1px solid var(--lb-border);
}

.leaderboard-table th {
  background: var(--lb-surface-soft);
  color: var(--lb-muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.leaderboard-table tbody tr {
  background: var(--lb-surface);
  transition: background-color 0.16s ease;
}

.leaderboard-table tbody tr:hover {
  background: var(--lb-surface-soft);
}

.leaderboard-table tbody tr.current-user {
  background: #f9fafb;
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--lb-accent-soft);
  color: var(--lb-text);
  font-weight: 800;
}

.student-meta {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.leaderboard-name-tag {
  --leaderboard-name-tag-bg: rgba(255, 255, 255, 0.88);
  --leaderboard-name-tag-border: var(--lb-border);
  --leaderboard-name-tag-color: var(--lb-text);
  position: relative;
  display: inline-flex;
  align-items: center;
  min-width: 0;
  max-width: 100%;
  padding: 0.45rem 0.82rem;
  border-radius: 999px;
  border: 1px solid var(--leaderboard-name-tag-border);
  background: var(--leaderboard-name-tag-bg);
  color: var(--leaderboard-name-tag-color);
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.08);
  overflow: hidden;
  isolation: isolate;
  backdrop-filter: blur(10px);
}

.leaderboard-name-tag-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

.leaderboard-name-tag-label {
  position: relative;
  z-index: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.podium-name.leaderboard-name-tag,
.student-name {
  margin: 0;
  font-weight: 700;
  line-height: 1.25;
}

.student-group {
  color: var(--lb-muted);
  font-size: 0.9rem;
}

.leaderboard-badge-chip {
  max-width: min(100%, 220px);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--badge-ring, #fcd34d);
  background: var(--badge-surface, #fffbeb);
  color: var(--badge-accent, #b45309);
  box-shadow:
    0 10px 20px var(--badge-shadow, rgba(180, 83, 9, 0.14)),
    0 0 0 0 var(--badge-glow, transparent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.73rem;
  font-weight: 800;
  white-space: nowrap;
}

.leaderboard-badge-chip[data-badge-effect="mythic"] {
  box-shadow:
    0 10px 20px var(--badge-shadow, rgba(220, 38, 38, 0.32)),
    0 0 20px var(--badge-glow, rgba(251, 113, 133, 0.34));
  animation: leaderboardBadgeMythicPulse 2.8s ease-in-out infinite;
}

.leaderboard-badge-chip svg {
  flex: 0 0 auto;
  width: 13px;
  height: 13px;
}

.leaderboard-badge-chip span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

@keyframes leaderboardBadgeMythicPulse {
  0%,
  100% {
    box-shadow:
      0 10px 20px var(--badge-shadow, rgba(220, 38, 38, 0.32)),
      0 0 16px var(--badge-glow, rgba(251, 113, 133, 0.34));
  }
  50% {
    box-shadow:
      0 10px 22px var(--badge-shadow, rgba(220, 38, 38, 0.38)),
      0 0 24px var(--badge-glow, rgba(251, 113, 133, 0.4));
  }
}

@keyframes shopAuraPulse {
  0%,
  100% {
    transform: scale(0.96);
  }
  50% {
    transform: scale(1.04);
  }
}

@keyframes shopAuraFloat {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-3px);
  }
}

.metric-strong {
  font-weight: 800;
  color: var(--lb-text);
}

.metric-soft {
  color: var(--lb-muted);
}

.empty-state,
.login-state {
  padding: 30px 22px;
  border-radius: 18px;
  text-align: center;
}

.empty-state h4,
.login-state h4 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}

.empty-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  border: 1px solid var(--lb-border);
  background: var(--lb-surface-soft);
  color: var(--lb-text);
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 14px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--lb-accent);
  background: var(--lb-accent);
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
}

.hidden {
  display: none !important;
}

.table-shell::-webkit-scrollbar {
  height: 10px;
}

.table-shell::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: #cbd5e1;
}

@media (max-width: 1100px) {
  .leaderboard-hero,
  .insight-grid,
  .podium-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h2 {
    max-width: none;
  }

  .panel-head {
    flex-direction: column;
  }

  .panel-controls,
  .filter-group {
    width: 100%;
    justify-items: stretch;
  }

  .leaderboard-badge-chip {
    max-width: 100%;
  }
}

@media (max-width: 860px) {
  .leaderboard-shell {
    margin-top: 22px;
    padding: 0 4%;
  }

  .leaderboard-hero,
  .ranking-panel {
    padding: 18px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .leaderboard-table {
    min-width: 760px;
  }

  .table-shell {
    overflow-x: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}