:root {
  --bg: var(--tg-theme-bg-color, #ffffff);
  --text: var(--tg-theme-text-color, #1c1c1e);
  --hint: var(--tg-theme-hint-color, #8e8e93);
  --card: var(--tg-theme-secondary-bg-color, #f2f2f7);
  --accent: var(--tg-theme-button-color, #2481cc);
  --accent-text: var(--tg-theme-button-text-color, #ffffff);
  --sep: rgba(128, 128, 128, 0.18);
}

/* Dark theme: Telegram supplies --tg-theme-* automatically; this fallback
   covers browsers and the tg-dark class set from Telegram.WebApp.colorScheme. */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--tg-theme-bg-color, #0f0f10);
    --text: var(--tg-theme-text-color, #f2f2f5);
    --hint: var(--tg-theme-hint-color, #98989f);
    --card: var(--tg-theme-secondary-bg-color, #1c1c1f);
    --accent: var(--tg-theme-button-color, #3a9fe8);
    --sep: rgba(200, 200, 210, 0.14);
  }
}
body.tg-dark {
  --bg: var(--tg-theme-bg-color, #0f0f10);
  --text: var(--tg-theme-text-color, #f2f2f5);
  --hint: var(--tg-theme-hint-color, #98989f);
  --card: var(--tg-theme-secondary-bg-color, #1c1c1f);
  --accent: var(--tg-theme-button-color, #3a9fe8);
  --sep: rgba(200, 200, 210, 0.14);
}

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro", "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  background: var(--bg);
  border-bottom: 1px solid var(--sep);
}

.title { font-size: 20px; font-weight: 700; margin: 0; letter-spacing: -0.02em; }

.me-chip {
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  white-space: nowrap;
  animation: pop-in 0.3s ease;
}

/* ─── gender switch ─── */
.gender-switch {
  display: flex;
  gap: 4px;
  margin: 10px 12px 0;
  padding: 3px;
  background: var(--card);
  border-radius: 12px;
}
.gender-btn {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--hint);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 0;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.22s ease, color 0.22s ease, transform 0.12s ease;
}
.gender-btn:active { transform: scale(0.96); }
.gender-btn.active {
  background: var(--accent);
  color: var(--accent-text);
}

.content { padding: 10px 12px 88px; }

.state { text-align: center; color: var(--hint); padding: 48px 16px; font-size: 15px; animation: fade-in 0.25s ease; }

/* ─── leaderboard list ─── */
.list { display: flex; flex-direction: column; gap: 6px; }

.row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--card);
  border-radius: 14px;
  animation: rise-in 0.3s ease backwards;
  transition: transform 0.12s ease;
}
.row:active { transform: scale(0.98); }
.row.me { outline: 2px solid var(--accent); }
.list .row:nth-child(1) { animation-delay: 0.02s; }
.list .row:nth-child(2) { animation-delay: 0.05s; }
.list .row:nth-child(3) { animation-delay: 0.08s; }
.list .row:nth-child(4) { animation-delay: 0.11s; }
.list .row:nth-child(5) { animation-delay: 0.14s; }
.list .row:nth-child(n+6) { animation-delay: 0.17s; }

.rank {
  flex: 0 0 34px;
  text-align: center;
  font-weight: 700;
  font-size: 15px;
  color: var(--hint);
}
.rank.top { color: var(--accent); font-size: 17px; }

.name {
  flex: 1 1 auto;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.score {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 17px;
}

/* ─── tiers ─── */
.tiers { display: flex; flex-direction: column; gap: 8px; }

.tier-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: var(--card);
  border-radius: 16px;
  border-left: 5px solid var(--tier-color, var(--accent));
  cursor: pointer;
  animation: rise-in 0.3s ease backwards;
  transition: transform 0.15s cubic-bezier(0.2, 0.8, 0.3, 1.2), filter 0.15s ease;
}
.tier-card:active { transform: scale(0.965); filter: brightness(0.94); }
.tiers .tier-card:nth-child(1) { animation-delay: 0.02s; }
.tiers .tier-card:nth-child(2) { animation-delay: 0.05s; }
.tiers .tier-card:nth-child(3) { animation-delay: 0.08s; }
.tiers .tier-card:nth-child(4) { animation-delay: 0.11s; }
.tiers .tier-card:nth-child(5) { animation-delay: 0.14s; }
.tiers .tier-card:nth-child(n+6) { animation-delay: 0.17s; }

.tier-photo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  flex: 0 0 auto;
  background: var(--sep);
  border: 2px solid var(--tier-color, var(--accent));
}
.tier-fallback {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  background: var(--tier-color, var(--accent));
}
.tier-info { flex: 1 1 auto; min-width: 0; }
.tier-name { font-weight: 700; font-size: 16px; }
.tier-sub { font-size: 13px; color: var(--hint); margin-top: 2px; }
.tier-arrow { color: var(--hint); font-size: 20px; transition: transform 0.15s ease; }
.tier-card:active .tier-arrow { transform: translateX(3px); }

/* ─── tier detail ─── */
.detail-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 4px 14px;
  animation: fade-in 0.25s ease;
}
.back-btn {
  border: none;
  background: var(--card);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.12s ease, filter 0.15s ease;
}
.back-btn:active { transform: scale(0.94); filter: brightness(0.92); }
.detail-title { font-weight: 700; font-size: 18px; display: flex; align-items: center; gap: 10px; }
.detail-photo {
  width: 34px; height: 34px; border-radius: 50%; object-fit: cover;
}

/* ─── tabbar ─── */
.tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--bg);
  border-top: 1px solid var(--sep);
  padding: 8px 8px calc(8px + env(safe-area-inset-bottom));
}
.tab {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--hint);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 0;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.12s ease;
}
.tab:active { transform: scale(0.95); }
.tab.active { color: var(--accent); background: var(--card); }

.hidden { display: none !important; }

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes rise-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pop-in {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}