:root {
  --bg: #0b0d10;
  --panel: #14181d;
  --muted: #9aa4af;
  --text: #e7edf3;
  --accent: #4aa3ff;
  --danger: #ff6b6b;
  --ok: #61d095;
  --warn: #f5c542;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body { background: var(--bg); color: var(--text); font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif; }

/* Touch defaults */
button, .card.clickable, .pile.stock {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

#app { display: grid; grid-template-rows: auto 1fr auto; min-height: 100vh; }
.app-header, .app-footer { padding: 12px 16px; background: var(--panel); border-bottom: 1px solid #1e242b; }
.app-header h1 { margin: 0 0 4px; font-size: 20px; }
.app-footer { border-top: 1px solid #1e242b; border-bottom: none; color: var(--muted); text-align: center; }
.status { color: var(--muted); min-height: 1.2em; }

/* Screens */
.screen { padding: 16px; }
.hidden { display: none !important; }

/* Buttons */
button { background: #1f2832; color: var(--text); border: 1px solid #2b3540; border-radius: 6px; padding: 8px 14px; cursor: pointer; font-size: 14px; transition: border-color 120ms, background 120ms, transform 80ms ease; }
button:disabled { opacity: 0.4; cursor: not-allowed; }
button:active:not(:disabled) { transform: scale(0.97); }
.btn-primary { background: #1a3a5c; border-color: var(--accent); color: var(--accent); font-weight: 600; padding: 10px 20px; font-size: 16px; }
.btn-knock { border-color: var(--warn); color: var(--warn); }

/* ─── MODE SELECT ─── */
.mode-select { max-width: 400px; margin: 60px auto; text-align: center; display: grid; gap: 16px; }
.mode-select h2 { margin: 0; }
.btn-mode { background: var(--panel); border: 1px solid #2b3540; border-radius: 8px; padding: 20px; font-size: 18px; font-weight: 600; color: var(--text); cursor: pointer; transition: border-color 120ms, background 120ms, transform 80ms ease; }

/* Hover effects — pointer devices only */
@media (hover: hover) {
  button:hover { border-color: #3a4756; background: #263040; }
  .btn-primary:hover:not(:disabled) { background: #1e4470; }
  .btn-knock:hover:not(:disabled) { background: #2a2818; }
  .btn-mode:hover { border-color: var(--accent); background: #1a3a5c; }
  .lobby-player .remove:hover { opacity: 0.7; }
  .card.clickable:hover { transform: translateY(-8px) rotate(-1deg); box-shadow: 0 8px 18px rgba(0,0,0,0.35); }
  .btn-back:hover { border-color: #3a4756; color: var(--text); }
}

/* ─── ONLINE LOBBY ─── */
.online-lobby { max-width: 400px; margin: 0 auto; display: grid; gap: 16px; }
.online-lobby h2 { margin: 0; }
.online-lobby-section { display: grid; gap: 12px; }
.online-lobby-buttons { display: grid; gap: 12px; }
.online-lobby-or { text-align: center; color: var(--muted); font-size: 13px; }
.join-row { display: flex; gap: 8px; }
.join-row input { flex: 1; background: #0f1419; border: 1px solid #2a333d; border-radius: 6px; padding: 8px 12px; color: var(--text); font-size: 16px; text-transform: uppercase; letter-spacing: 4px; text-align: center; outline: none; }
.join-row input:focus { border-color: var(--accent); }
.online-lobby input[type="text"]#online-player-name { background: #0f1419; border: 1px solid #2a333d; border-radius: 6px; padding: 8px 12px; color: var(--text); font-size: 14px; outline: none; width: 100%; }
.online-lobby input[type="text"]#online-player-name:focus { border-color: var(--accent); }
.room-code-display { font-size: 24px; font-weight: 700; text-align: center; padding: 12px; background: var(--panel); border: 1px solid var(--accent); border-radius: 8px; letter-spacing: 6px; color: var(--accent); }
.online-players { display: grid; gap: 8px; }
.host-badge { background: var(--accent); color: var(--bg); padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.btn-back { background: none; border: 1px solid #2a333d; color: var(--muted); font-size: 13px; padding: 6px 12px; }

/* ─── LOBBY ─── */
.lobby { max-width: 400px; margin: 0 auto; display: grid; gap: 16px; }
.lobby h2 { margin: 0; }
.lobby-players { display: grid; gap: 8px; }
.lobby-player { display: flex; align-items: center; gap: 10px; background: var(--panel); padding: 8px 12px; border-radius: 6px; border: 1px solid #1e242b; }
.lobby-player .name { flex: 1; font-weight: 600; }
.lobby-player .remove { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 18px; padding: 0 4px; }
.lobby-add { display: flex; gap: 8px; }
.lobby-add input { flex: 1; background: #0f1419; border: 1px solid #2a333d; border-radius: 6px; padding: 8px 12px; color: var(--text); font-size: 14px; outline: none; }
.lobby-add input:focus { border-color: var(--accent); }
.lobby-hint { color: var(--muted); margin: 0; font-size: 13px; }

/* ─── PASS SCREEN ─── */
.pass-screen { max-width: 400px; margin: 60px auto; text-align: center; display: grid; gap: 24px; }
.pass-screen h2 { margin: 0; color: var(--muted); font-weight: 400; }
.pass-player-name { font-size: 32px; font-weight: 700; }

/* ─── GAMEPLAY ─── */
.game { display: grid; grid-template-columns: 200px 1fr; gap: 16px; }
.player-info { display: grid; gap: 12px; align-content: start; }
.current-turn-label { font-size: 18px; font-weight: 700; padding: 8px 12px; background: var(--panel); border-radius: 8px; border: 1px solid #1e242b; }
.player-lives { color: var(--muted); padding: 0 12px; }
.player-lives .life { display: inline-block; margin-right: 2px; }
.player-lives .life.full { color: var(--danger); }
.player-lives .life.empty { color: #2a333d; }

.opponents { display: grid; gap: 8px; }
.opponent { background: var(--panel); padding: 8px 12px; border-radius: 6px; border: 1px solid #1e242b; font-size: 13px; }
.opponent .opp-name { font-weight: 600; }
.opponent .opp-lives { color: var(--muted); }
.opponent .opp-cards { display: flex; gap: 4px; margin-top: 4px; }
.opponent.eliminated { opacity: 0.4; }
.opponent.knocked .opp-name::after { content: " (knocked)"; color: var(--warn); font-weight: 400; }

.play-area { display: grid; gap: 16px; align-content: start; }
.hand-area { background: var(--panel); border: 1px solid #1e242b; border-radius: 8px; padding: 12px; }
.hand-label { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.hand-score { color: var(--accent); font-weight: 600; }
.hand { display: flex; gap: 10px; justify-content: center; }

.table-center { background: var(--panel); border: 1px solid #1e242b; border-radius: 8px; padding: 12px; display: grid; gap: 12px; }
.piles { display: flex; gap: 20px; justify-content: center; align-items: center; }
.pile { display: grid; gap: 4px; align-items: center; justify-items: center; }
.pile .count { color: var(--muted); font-size: 12px; }
.pile.stock { cursor: pointer; }

.actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

/* Cards */
.card {
  width: clamp(48px, 10vw, 72px);
  aspect-ratio: 5 / 7;
  border-radius: 6px;
  display: grid;
  place-items: center;
  border: 1px solid #2a333d;
  background: #0f1419;
  color: #fff;
  font-weight: 700;
  font-size: clamp(13px, 2vw, 18px);
  user-select: none;
  transition: transform 140ms ease, box-shadow 140ms ease, outline-color 140ms ease;
}
.card.clickable { cursor: pointer; }
.card.clickable:active { transform: translateY(-4px); }
.card.selected { outline: 2px solid var(--accent); outline-offset: -2px; transform: translateY(-10px) scale(1.03); }
.card.back {
  background:
    radial-gradient(120% 120% at 30% 30%, #1b2330 0%, rgba(27,35,48,0) 60%),
    repeating-linear-gradient(45deg, #1b2430, #1b2430 6px, #15202b 6px, #15202b 12px);
  border: 1px solid #2a333d;
}
.card.empty { border-style: dashed; background: transparent; }
.card.red { color: #ffb0b0; }
.card.black { color: #cfe6ff; }
.card-mini {
  width: 28px; height: 38px; border-radius: 4px;
  display: inline-grid; place-items: center;
  background: #1a2030; border: 1px solid #2a333d;
  font-size: 10px; font-weight: 700;
}
.card-mini.red { color: #ffb0b0; }
.card-mini.black { color: #cfe6ff; }

/* Animations */
@keyframes deal-in { from { transform: scale(0.8) translateY(10px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }
@keyframes pop-in { from { transform: scale(0.75); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes flip-in { from { transform: rotateY(90deg); opacity: 0.2; } to { transform: rotateY(0deg); opacity: 1; } }
.anim-deal { animation: deal-in 220ms ease-out; }
.anim-draw { animation: pop-in 160ms ease-out; }
.flip { transform-style: preserve-3d; backface-visibility: hidden; animation: flip-in 200ms ease-out; }

/* ─── ROUND END ─── */
.round-end { max-width: 500px; margin: 0 auto; display: grid; gap: 16px; }
.round-end h2 { margin: 0; }
.round-end-message { color: var(--muted); font-size: 15px; }
.round-results { display: grid; gap: 8px; }
.round-result-row { display: flex; align-items: center; gap: 12px; background: var(--panel); padding: 10px 14px; border-radius: 6px; border: 1px solid #1e242b; }
.round-result-row.loser { border-color: var(--danger); background: #1a1214; }
.round-result-row.blitzer { border-color: var(--ok); background: #0f1a14; }
.round-result-row .rr-name { font-weight: 600; min-width: 80px; }
.round-result-row .rr-score { color: var(--accent); font-weight: 700; min-width: 40px; text-align: right; }
.round-result-row .rr-cards { display: flex; gap: 4px; flex: 1; }
.round-result-row .rr-life-change { color: var(--danger); font-size: 13px; white-space: nowrap; }
.life-changes { color: var(--muted); font-size: 13px; }

/* ─── GAME OVER ─── */
.game-over { max-width: 400px; margin: 40px auto; text-align: center; display: grid; gap: 24px; }
.game-over h2 { margin: 0; font-size: 24px; }
.winner-display { font-size: 28px; font-weight: 700; color: var(--ok); }

/* ─── Responsive: tablet / small desktop ─── */
@media (max-width: 720px) {
  .game { grid-template-columns: 1fr; }
  .play-area { order: -1; }
  .opponents { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .hand { gap: 12px; }
  .actions button { min-height: 44px; }
}

/* ─── Responsive: small phones ─── */
@media (max-width: 480px) {
  .screen { padding: 10px; }
  .app-header h1 { font-size: 17px; }
  .card { width: clamp(44px, 22vw, 60px); }
  .actions { gap: 6px; }
  .actions button { flex: 1 1 auto; min-height: 44px; font-size: 13px; }
  .opponents { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .opponent { padding: 6px 8px; font-size: 12px; }
}