:root {
  --bg: #0c1020;
  --bg-soft: #141a30;
  --panel: #1a2138;
  --panel-2: #222b47;
  --border: #2c3658;
  --text: #e7ecf6;
  --muted: #8c97b8;
  --accent: #36d6c3;
  --accent-2: #6c8cff;
  --danger: #ff6b6b;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #18213d 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: rgba(12, 16, 32, 0.7);
  backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--accent); }
.brand-sub { color: var(--muted); font-weight: 500; }
.topnav { display: flex; align-items: center; gap: 12px; }
.inline { display: inline; margin: 0; }
.user-chip {
  display: inline-flex; flex-direction: column; align-items: flex-end;
  line-height: 1.15; font-weight: 600;
}
.user-record { font-size: 0.72rem; color: var(--muted); font-weight: 500; }

/* Buttons */
.btn {
  display: inline-block; cursor: pointer;
  background: linear-gradient(180deg, var(--accent), #24b3a3);
  color: #06231f; font-weight: 700; border: none;
  padding: 9px 16px; border-radius: 10px; font-size: 0.92rem;
  transition: transform .06s ease, filter .15s ease;
}
.btn:hover { filter: brightness(1.07); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border); font-weight: 600;
}
.btn-ghost:hover { background: var(--panel-2); }
.btn-block { width: 100%; padding: 12px; font-size: 1rem; }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }

/* Layout */
.content { max-width: 980px; margin: 0 auto; padding: 28px 20px 60px; }

/* Cards */
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}

/* Auth */
.auth-wrap { display: flex; justify-content: center; padding-top: 36px; }
.auth-card { width: 100%; max-width: 380px; padding: 28px; }
.auth-card h1 { margin: 0 0 4px; font-size: 1.5rem; }
.form { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; color: var(--muted); }
.form input {
  background: var(--bg-soft); border: 1px solid var(--border); color: var(--text);
  padding: 11px 12px; border-radius: 10px; font-size: 1rem;
}
.form input:focus { outline: 2px solid var(--accent-2); border-color: transparent; }
.muted { color: var(--muted); }
.center { text-align: center; }
.small { font-size: 0.82rem; }
.alert {
  background: rgba(255, 107, 107, 0.12); border: 1px solid rgba(255, 107, 107, 0.4);
  color: #ffd0d0; padding: 10px 12px; border-radius: 10px; font-size: 0.88rem; margin-top: 6px;
}

/* Lobby */
.hero { text-align: center; margin-bottom: 26px; }
.hero h1 { font-size: 2rem; margin: 0 0 6px; }
.game-grid {
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.game-card {
  --accent: var(--accent);
  padding: 20px; display: flex; flex-direction: column; gap: 8px;
  color: var(--text); position: relative; overflow: hidden;
  border-top: 3px solid var(--accent);
  transition: transform .12s ease, border-color .15s ease;
}
a.game-card:hover { transform: translateY(-4px); text-decoration: none; }
.game-card h2 { margin: 4px 0 0; font-size: 1.3rem; }
.game-card-top { display: flex; justify-content: flex-end; }
.game-badge {
  font-size: 0.72rem; text-transform: uppercase; letter-spacing: .04em;
  background: var(--panel-2); color: var(--muted);
  padding: 3px 9px; border-radius: 999px;
}
.play-cta { margin-top: auto; color: var(--accent); font-weight: 700; padding-top: 10px; }
.game-card.soon { opacity: 0.6; }

/* Game page */
.game-page { max-width: 860px; margin: 0 auto; }
.game-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; gap: 12px; flex-wrap: wrap; }
.room-info { display: flex; align-items: center; gap: 10px; }
.scoreboard {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  gap: 16px; margin-bottom: 14px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px 20px;
}
.score-side { display: flex; align-items: center; gap: 14px; }
.score-side.right { justify-content: flex-end; }
.score-side.left { color: var(--accent); }
.score-side.right { color: var(--accent-2); }
.player-name { font-weight: 700; font-size: 1.05rem; max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.score { font-size: 2.2rem; font-weight: 800; font-variant-numeric: tabular-nums; min-width: 42px; text-align: center; color: var(--text); }
.score-vs { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: .1em; }

.court-wrap { position: relative; width: 100%; aspect-ratio: 800 / 480; }
#court {
  width: 100%; height: 100%; display: block;
  background: #070b16; border: 1px solid var(--border); border-radius: var(--radius);
  touch-action: none;
}
.overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(5, 8, 18, 0.55); border-radius: var(--radius);
  transition: opacity .2s ease;
}
.overlay.hidden { opacity: 0; pointer-events: none; }
.overlay-box { text-align: center; }
.overlay-box p { margin: 4px 0; }
#overlay-text { font-size: 1.6rem; font-weight: 800; }

.controls-hint { margin-top: 14px; color: var(--muted); font-size: 0.9rem; text-align: center; }
kbd {
  background: var(--panel-2); border: 1px solid var(--border); border-bottom-width: 2px;
  border-radius: 6px; padding: 1px 7px; font-family: inherit; font-size: 0.85em; color: var(--text);
}
.role-tag {
  display: inline-block; background: var(--panel-2); border: 1px solid var(--border);
  padding: 2px 10px; border-radius: 999px; font-size: 0.78rem; margin-right: 6px;
}
.role-tag.left { color: var(--accent); border-color: var(--accent); }
.role-tag.right { color: var(--accent-2); border-color: var(--accent-2); }

/* ── Snake ──────────────────────────────────────────────────────────────── */
.snake-wrap { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.snake-hud { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.hud-box { background: var(--panel); border: 1px solid var(--border); padding: 8px 16px; border-radius: 10px; text-align: center; min-width: 72px; }
.hud-label { font-size: 0.65rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; display: block; }
.hud-value { font-size: 1.2rem; font-weight: 700; display: block; }
.hud-level-name { font-size: 0.8rem; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; min-height: 1.1em; }
#game { display: block; border: 3px solid var(--accent); border-radius: 6px; transition: border-color .4s; }

/* ── Tic Tac Toe ────────────────────────────────────────────────────────── */
.ttt-wrap { display: flex; flex-direction: column; align-items: center; gap: 16px; }
.ttt-board { display: grid; grid-template-columns: repeat(3, 110px); grid-template-rows: repeat(3, 110px); gap: 8px; }
.ttt-cell { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 3rem; font-weight: 700; cursor: pointer; transition: background .15s, transform .1s; user-select: none; }
.ttt-cell:hover:not(.taken) { background: var(--panel-2); transform: scale(1.05); }
.ttt-cell.x { color: var(--danger); }
.ttt-cell.o { color: var(--accent-2); }
.ttt-cell.win { background: var(--panel-2); animation: ttt-pulse .6s ease; }
@keyframes ttt-pulse { 0% { transform: scale(1); } 50% { transform: scale(1.12); } 100% { transform: scale(1); } }
.ttt-scores { display: flex; gap: 2rem; }
.ttt-score-box { text-align: center; background: var(--panel); border: 1px solid var(--border); padding: 10px 24px; border-radius: 12px; }
.ttt-score-label { font-size: 0.8rem; color: var(--muted); display: block; margin-bottom: 2px; }
.ttt-score-value { font-size: 1.5rem; font-weight: 700; display: block; }
.ttt-score-box.x-score .ttt-score-value { color: var(--danger); }
.ttt-score-box.o-score .ttt-score-value { color: var(--accent-2); }
.ttt-score-box.draw-score .ttt-score-value { color: #f5a623; }
.ttt-status { font-size: 1.2rem; color: var(--muted); min-height: 1.8rem; }
.ttt-mode { display: flex; gap: 8px; }
.mode-btn { padding: 6px 18px; border: 2px solid var(--border); border-radius: 999px; background: transparent; color: var(--text); cursor: pointer; font-size: 0.9rem; transition: background .15s, color .15s, border-color .15s; }
.mode-btn.active, .mode-btn:hover { background: var(--panel-2); border-color: var(--accent); color: var(--accent); }