:root {
  color-scheme: dark;
  --bg: #0a0e17;
  --bg-2: #111827;
  --card: rgba(21, 28, 43, 0.92);
  --text: #f2f3ed;
  --ink: #f2f3ed;
  --muted: #a3adbf;
  --line: rgba(205, 216, 239, 0.14);
  --accent: #d8f879;
  --accent-soft: rgba(216, 248, 121, 0.15);
  --good: #d8f879;
  --btn: #1a2232;
  --btn2: #2b3549;
  --site-bg: #0a0e17;
  --site-panel: rgba(19, 26, 40, 0.9);
  --site-lime: #d8f879;
  --site-lilac: #b9a9ff;
  --site-muted: #9ca8bb;
  --site-line: rgba(210, 221, 240, 0.13);
  --site-radius: 24px;
}
* { box-sizing: border-box; }
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid var(--site-lime);
  outline-offset: 4px;
}
::selection { color: #0b1119; background: var(--site-lime); }
body[data-page] {
  color: var(--text);
  background:
    radial-gradient(1000px 620px at 12% -10%, rgba(87, 105, 179, 0.19), transparent 64%),
    radial-gradient(900px 640px at 100% 8%, rgba(134, 109, 204, 0.12), transparent 62%),
    linear-gradient(180deg, #101522 0%, var(--site-bg) 56%, #090c13 100%);
}
body[data-page="chess"],
body[data-page="dama"],
body[data-page="xox"] { min-height: 100vh; }
body[data-page="chess"] .topbar,
body[data-page="dama"] .topbar__inner,
body[data-page="xox"] .app-top {
  border: 1px solid var(--site-line);
  border-radius: 20px;
  background: rgba(17, 24, 38, 0.82);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(18px);
}
body[data-page="chess"] .card,
body[data-page="dama"] .card,
body[data-page="xox"] .card {
  border-color: var(--site-line);
  border-radius: var(--site-radius);
  background: var(--site-panel);
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.27);
  backdrop-filter: blur(16px);
}
body[data-page="chess"] .home-btn,
body[data-page="dama"] .home-btn,
body[data-page="xox"] .home-link {
  min-height: 42px;
  border: 1px solid var(--site-line);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--text);
  transition: border-color .18s ease, background .18s ease, transform .18s ease;
}
body[data-page="chess"] .home-btn:hover,
body[data-page="dama"] .home-btn:hover,
body[data-page="xox"] .home-link:hover {
  color: var(--text);
  border-color: rgba(216, 248, 121, 0.48);
  background: rgba(216, 248, 121, 0.08);
}
body[data-page="chess"] .btn,
body[data-page="dama"] .btn,
body[data-page="xox"] .btn,
body[data-page="xox"] .actions button {
  border: 1px solid var(--site-line);
  border-radius: 13px;
  background: linear-gradient(145deg, #293449, #1a2231);
  color: var(--text);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
  transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
}
body[data-page="chess"] .btn:hover:not(:disabled),
body[data-page="dama"] .btn:hover:not(:disabled),
body[data-page="xox"] .btn:hover:not(:disabled),
body[data-page="xox"] .actions button:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: rgba(216, 248, 121, 0.44);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.28);
}
body[data-page="chess"] .btn-primary,
body[data-page="dama"] .btn.primary,
body[data-page="xox"] .btn.primary,
body[data-page="xox"] .actions button:not(.ghost) {
  border-color: var(--site-lime);
  background: var(--site-lime);
  color: #141a12;
  box-shadow: 0 9px 26px rgba(216, 248, 121, 0.16);
}
body[data-page="chess"] .btn-primary:hover:not(:disabled),
body[data-page="dama"] .btn.primary:hover:not(:disabled),
body[data-page="xox"] .btn.primary:hover:not(:disabled) {
  background: #e3ff91;
}
body[data-page="chess"] select,
body[data-page="chess"] input[type="text"],
body[data-page="dama"] .select,
body[data-page="dama"] .input,
body[data-page="xox"] .input {
  border: 1px solid var(--site-line);
  border-radius: 12px;
  background-color: rgba(9, 13, 22, 0.78);
  color: var(--text);
}
body[data-page="chess"] select:focus,
body[data-page="dama"] .select:focus,
body[data-page="dama"] .input:focus,
body[data-page="xox"] .input:focus {
  border-color: rgba(216, 248, 121, 0.62);
}
body[data-page="dama"] .board-card {
  border: 1px solid rgba(231, 222, 202, 0.15);
  background: linear-gradient(145deg, rgba(29, 32, 40, 0.96), rgba(13, 16, 24, 0.96));
}
body[data-page="dama"] .side-title,
body[data-page="dama"] .field-label { color: var(--site-muted); }
body[data-page="dama"] .topbar__subtitle,
body[data-page="chess"] .subtitle { color: var(--site-muted); }
body[data-page="dama"] .layout { align-items: center; }
body[data-page="dama"] .home-btn,
body[data-page="chess"] .home-btn { text-decoration: none; }
body[data-page="dama"] .pill,
body[data-page="chess"] .pill,
body[data-page="xox"] .pill {
  border-color: var(--site-line);
  background: rgba(255, 255, 255, 0.055);
}
body[data-page="xox"] .app-shell {
  width: min(1180px, 100%);
  margin-inline: auto;
  align-items: center;
}
body[data-page="xox"] .game-card,
body[data-page="xox"] .mobile-home { width: min(100%, 520px); }
body[data-page="xox"] .app-top { width: min(1120px, 100%); padding: 13px 16px; }
body[data-page="xox"] .app-dot { background: var(--site-lime); box-shadow: 0 0 18px rgba(216, 248, 121, 0.5); }
body[data-page="xox"] .game-card,
body[data-page="xox"] .mobile-home { border-radius: 28px; }
body[data-page="xox"] .game-card { background: linear-gradient(155deg, rgba(25, 33, 50, 0.96), rgba(14, 19, 30, 0.98)); }
body[data-page="xox"] .cell {
  border-color: rgba(211, 223, 243, 0.14);
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(28, 37, 55, 0.96), rgba(17, 24, 38, 0.98));
  font-size: clamp(36px, 7vw, 54px);
}
body[data-page="xox"] .cell.win {
  border-color: var(--site-lime);
  background: rgba(216, 248, 121, 0.17);
  color: var(--site-lime);
}
body[data-page="xox"] .choice.active {
  border-color: var(--site-lime);
  background: var(--accent-soft);
  color: var(--site-lime);
}
body[data-page="xox"] .mobile-home {
  background: linear-gradient(145deg, rgba(32, 38, 53, 0.98), rgba(12, 16, 25, 0.99));
  border-color: var(--site-line);
}
body[data-page="chess"] .topbar { padding: 13px 16px; }
body[data-page="chess"] #status { border-color: var(--site-line); background: rgba(255, 255, 255, 0.055); }
body[data-page="chess"] #board { filter: drop-shadow(0 18px 24px rgba(0, 0, 0, 0.22)); }
body[data-page="chess"] .layout { max-width: 1160px; gap: 18px; }
body[data-page="chess"] #board { width: min(calc(100vw - 56px), 540px); }
@media (max-width: 760px) {
  body[data-page="chess"] .topbar__brand { flex-wrap: wrap; }
  body[data-page="dama"] .app { padding: 14px 12px 32px; }
  body[data-page="xox"] .app-shell { padding: 18px 12px 32px; }
}
@media (prefers-reduced-motion: reduce) {
  body[data-page] *, body[data-page] *::before, body[data-page] *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}