:root {
  --bg: #0f1020;
  --accent: #7c5cff;
  --accent2: #00d4ff;
  --text: #e8e8f0;
  --muted: #9aa0b5;
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
  /* couleurs de plateau (surchargées par data-theme) */
  --light: #f0d9b5;
  --dark: #b58863;
  --sel: #f6e05e;
  --move: rgba(0, 200, 120, 0.6);
  --last: rgba(246, 224, 94, 0.35);
}
/* ===== Thèmes de plateau ===== */
body[data-theme="classic"] { --light: #f0d9b5; --dark: #b58863; }
body[data-theme="wood"]    { --light: #e8cfa3; --dark: #8a5a3b; }
body[data-theme="forest"]  { --light: #eef0d5; --dark: #6f8f5a; }
body[data-theme="ocean"]   { --light: #d7e7f0; --dark: #4a7fa5; }
body[data-theme="neon"]    { --light: #2a2c50; --dark: #14152b; --move: rgba(0,212,255,.7); --sel:#00d4ff; }
body[data-theme="marble"]  { --light: #e9e9ee; --dark: #8b8b96; }

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(1200px 700px at 70% -10%, #2a2c52 0%, var(--bg) 55%);
  color: var(--text); min-height: 100vh; line-height: 1.5;
}

/* ===== Écrans ===== */
.screen { display: none; min-height: 100vh; animation: fade .35s ease; }
.screen.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } }

/* ===== Menu ===== */
#menu { display: none; place-items: center; padding: 2rem 1rem; }
#menu.active { display: grid; }
.menu-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 24px;
  padding: 2.5rem 2.2rem; text-align: center; max-width: 460px; width: 100%;
  box-shadow: 0 30px 80px rgba(0,0,0,.5); backdrop-filter: blur(6px);
}
.menu-card h1 { font-size: clamp(2.2rem, 6vw, 3.2rem); letter-spacing: -0.02em; }
.menu-card h1 span { background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tagline { color: var(--muted); margin: 0.4rem 0 1.8rem; }
.menu-actions { display: flex; flex-direction: column; gap: 0.7rem; }
.menu-row { display: flex; gap: 0.7rem; }
.menu-row .ghost { flex: 1; }
.menu-quick { margin-top: 1.6rem; color: var(--muted); display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0.5rem; }
.menu-foot { margin-top: 1.6rem; color: var(--muted); font-size: 0.8rem; }

button { font-family: inherit; cursor: pointer; border: none; transition: transform .12s ease, filter .15s, background .15s, box-shadow .15s, border-color .15s, color .15s; }
button:hover { transform: translateY(-1px); }
button:active { transform: translateY(0) scale(.97); }
button:focus-visible { outline: 2px solid var(--accent2); outline-offset: 2px; }
.big { background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; font-weight: 800; font-size: 1.2rem; padding: 1rem; border-radius: 14px; box-shadow: 0 8px 24px rgba(124,92,255,.35); }
.big:hover { box-shadow: 0 12px 32px rgba(124,92,255,.5); }
.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); padding: 0.7rem; border-radius: 12px; font-weight: 600; }
.ghost:hover { background: var(--card); }
.chip { background: var(--card); border: 1px solid var(--border); color: var(--text); padding: 0.4rem 0.8rem; border-radius: 999px; font-size: 0.9rem; }
.chip.sel { background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; font-weight: 700; }

/* ===== Topbar / layout jeu ===== */
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 0.8rem 1rem; max-width: 1080px; margin: 0 auto; gap: 1rem; }
.icon-btn { background: var(--card); border: 1px solid var(--border); color: var(--text); width: 42px; height: 42px; border-radius: 12px; font-size: 1.2rem; }
.icon-btn:hover { background: rgba(255,255,255,.1); }
.turn { font-size: 1.05rem; text-align: center; flex: 1; }
.turn .chk { color: #ff6b6b; font-weight: 800; }
.layout { display: flex; flex-wrap: wrap; gap: 1.8rem; justify-content: center; align-items: flex-start; padding: 0.5rem 1rem 2rem; max-width: 1080px; margin: 0 auto; }
.game { display: flex; flex-direction: column; gap: 0.5rem; align-items: center; }

.player-line { width: min(86vw, 480px); display: flex; align-items: center; gap: 0.5rem; }
.player-line .who { color: var(--muted); font-size: 0.85rem; min-width: 44px; }
.captured { flex: 1; display: flex; flex-wrap: wrap; gap: 1px; font-size: 18px; min-height: 22px; color: #d8dcef; }
.adv { color: #8be28b; font-weight: 700; font-size: 0.9rem; }
.clock { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 1.1rem; padding: 0.1rem 0.55rem; border-radius: 8px; background: var(--card); }
.clock.active { background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; }
.clock.hidden { display: none; }

/* ===== Plateau ===== */
.board-wrap { position: relative; }
.board {
  display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
  width: min(86vw, 480px); height: min(86vw, 480px);
  border: 4px solid rgba(0,0,0,.55); border-radius: 8px; overflow: hidden; box-shadow: 0 24px 70px rgba(0,0,0,.55);
}
.cell { display: flex; align-items: center; justify-content: center; font-size: min(9vw, 46px); cursor: pointer; position: relative; user-select: none; line-height: 1; }
.cell.light { background: var(--light); }
.cell.dark { background: var(--dark); }
.cell.last { box-shadow: inset 0 0 0 100px var(--last); }
.cell.selected { background: var(--sel) !important; }
.cell.hill::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 3px rgba(124,92,255,.85); }
.cell.power { box-shadow: inset 0 0 0 3px rgba(255,207,58,.8); }
.cell.move::before { content: ""; width: 28%; height: 28%; border-radius: 50%; background: var(--move); }
.cell.capture::before { content: ""; position: absolute; inset: 8%; border-radius: 50%; border: 4px solid var(--move); }
.cell.hint { box-shadow: inset 0 0 0 4px var(--accent); }
.coord { position: absolute; font-size: 10px; font-weight: 700; opacity: .55; pointer-events: none; }
.coord.rank { top: 2px; left: 3px; }
.coord.file { bottom: 1px; right: 3px; }
.cell.light .coord { color: var(--dark); }
.cell.dark .coord { color: var(--light); }
.power-icon { font-size: min(7vw, 34px); filter: drop-shadow(0 1px 2px rgba(0,0,0,.5)); animation: pop .3s ease; }

/* ===== Styles de pièces ===== */
.piece { pointer-events: none; transition: none; }
.piece.moved { animation: pop .25s ease; }
.piece.check { animation: pulse .8s infinite; }
body[data-pieces="classic"] .piece.w { color: #fff; text-shadow: 0 1px 2px rgba(0,0,0,.5), 0 0 1px #000; }
body[data-pieces="classic"] .piece.b { color: #141414; text-shadow: 0 1px 1px rgba(255,255,255,.25); }
body[data-pieces="neon"] .piece.w { color: #6ff; text-shadow: 0 0 8px #0ff, 0 0 2px #fff; }
body[data-pieces="neon"] .piece.b { color: #f6f; text-shadow: 0 0 8px #f0f, 0 0 2px #fff; }
body[data-pieces="candy"] .piece.w { color: #ffd1e8; text-shadow: 0 0 6px #ff8ac4; }
body[data-pieces="candy"] .piece.b { color: #b06bff; text-shadow: 0 0 6px #7c3aed; }
body[data-pieces="gold"] .piece.w { color: #ffd86b; text-shadow: 0 1px 2px #7a5a00; }
body[data-pieces="gold"] .piece.b { color: #c0c4cc; text-shadow: 0 1px 2px #2a2a2a; }
.piece.check { color: #ff3b3b !important; }
@keyframes pulse { 50% { text-shadow: 0 0 16px #ff3b3b; transform: scale(1.08); } }
@keyframes pop { from { transform: scale(.55); } to { transform: scale(1); } }

/* ===== Contrôles ===== */
.controls { display: flex; gap: 0.55rem; flex-wrap: wrap; justify-content: center; margin-top: 0.5rem; }
.ctrl { background: var(--card); border: 1px solid var(--border); color: var(--text); padding: 0.6rem 1rem; border-radius: 12px; font-weight: 600; font-size: 0.92rem; display: inline-flex; align-items: center; gap: 0.35rem; }
.ctrl:hover { background: rgba(255,255,255,.08); border-color: var(--accent); color: #fff; }
.ctrl.primary { background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; border: none; box-shadow: 0 6px 18px rgba(124,92,255,.3); }
.ctrl.primary:hover { filter: brightness(1.08); color: #0b0b16; }
.ctrl:disabled { opacity: .35; cursor: not-allowed; transform: none; border-color: var(--border); }
.ctrl:disabled:hover { background: var(--card); color: var(--text); }
.icon-btn:hover { border-color: var(--accent); }
.status { min-height: 1.4rem; color: var(--sel); font-weight: 700; text-align: center; }

/* ===== Panneau ===== */
.panel { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 1.1rem 1.3rem; width: 300px; max-width: 86vw; }
.panel h2 { font-size: 0.95rem; margin: 0.9rem 0 0.5rem; color: var(--accent2); }
.panel h2:first-child { margin-top: 0; }
.history { max-height: 200px; overflow-y: auto; background: rgba(0,0,0,.22); border-radius: 8px; padding: 0.4rem 0.6rem; font-variant-numeric: tabular-nums; font-size: 0.9rem; }
.move-row { display: grid; grid-template-columns: 1.8rem 1fr 1fr; gap: 0.3rem; }
.move-row .num { color: var(--muted); }
.badges { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.badge { background: rgba(124,92,255,.2); border: 1px solid rgba(124,92,255,.4); color: #cbbcff; padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.8rem; }
.badge.none { color: var(--muted); background: none; border-color: var(--border); }

/* ===== Bannière + promo ===== */
.win-banner, .promo { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); display: none; z-index: 5; text-align: center; }
.win-banner { padding: 0.9rem 1.3rem; border-radius: 14px; background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; font-weight: 800; font-size: 1.1rem; box-shadow: 0 10px 40px rgba(0,0,0,.6); max-width: 90%; }
.win-banner.show { display: block; animation: pop .3s ease; }
.promo { background: #1a1c34; padding: 0.6rem; border-radius: 14px; gap: 0.3rem; box-shadow: 0 10px 40px rgba(0,0,0,.7); }
.promo.show { display: flex; }
.promo-btn { font-size: 34px; background: #ece7df; color: #111; padding: 0.15rem 0.45rem; border-radius: 8px; }
.promo-btn.w { background: #44476a; color: #fff; }

/* ===== Modales ===== */
.modal { display: none; position: fixed; inset: 0; background: rgba(8,8,18,.7); backdrop-filter: blur(4px); z-index: 50; place-items: center; padding: 1rem; animation: fade .25s ease; }
.modal.show { display: grid; }
.modal-box { background: #16172c; border: 1px solid var(--border); border-radius: 20px; padding: 1.4rem 1.6rem; width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; box-shadow: 0 30px 90px rgba(0,0,0,.6); }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.modal-head h2 { color: var(--accent2); }
.close { background: var(--card); border: 1px solid var(--border); color: var(--text); width: 34px; height: 34px; border-radius: 10px; font-size: 1rem; }
.modal-box h3 { margin: 1.1rem 0 0.5rem; font-size: 0.95rem; color: var(--accent); }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.settings-grid label { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; color: var(--muted); }
.settings-grid select { background: #20223e; color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 0.5rem; font-family: inherit; }
.toggles { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.toggle { display: flex; align-items: center; gap: 0.45rem; font-size: 0.88rem; cursor: pointer; }
.toggle input { width: 16px; height: 16px; accent-color: var(--accent); }
.modal-actions { margin-top: 1.3rem; display: flex; justify-content: flex-end; }
.modal-actions .primary { background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; font-weight: 700; padding: 0.6rem 1.3rem; border-radius: 999px; }
.help { padding-left: 1.1rem; color: var(--muted); font-size: 0.9rem; }
.help li { margin: 0.3rem 0; }

/* ===== Multijoueur ===== */
.big.online { background: linear-gradient(90deg, #00d4ff, #00ffa3); color: #03121a; margin-top: 0.6rem; box-shadow: 0 8px 24px rgba(0,212,255,.3); }
.big.online:hover { box-shadow: 0 12px 32px rgba(0,212,255,.45); }
#online .hint { margin: 0 0 1rem; }
#online-start { display: flex; flex-direction: column; gap: 0.8rem; }
#online-start.hidden { display: none; }
#btn-create { width: 100%; padding: 0.9rem; font-size: 1.05rem; border-radius: 12px; }
.join-row { display: flex; gap: 0.55rem; align-items: stretch; }
#join-code { flex: 1; min-width: 0; background: #20223e; color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 0.7rem 0.8rem; font-size: 1.05rem; text-transform: uppercase; text-align: center; letter-spacing: 4px; font-family: inherit; }
#join-code::placeholder { letter-spacing: 1px; color: var(--muted); }
#join-code:focus { outline: none; border-color: var(--accent2); }
#btn-join { flex: none; background: linear-gradient(90deg, var(--accent), var(--accent2)); color: #0b0b16; font-weight: 700; padding: 0 1.4rem; border-radius: 10px; white-space: nowrap; }
.online-error { color: #ff6b6b; font-size: 0.85rem; min-height: 1rem; margin-top: 0.2rem; text-align: center; }
.online-wait { display: none; text-align: center; padding: 0.4rem 0; }
.online-wait.show { display: block; }
.wait-label { color: var(--muted); margin-bottom: 0.2rem; }
.big-code { font-size: 2.6rem; font-weight: 800; letter-spacing: 8px; background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; margin: 0.4rem 0; }
#online-status { color: var(--text); margin: 0.3rem 0; }
.spinner { width: 38px; height: 38px; border: 4px solid var(--border); border-top-color: var(--accent2); border-radius: 50%; margin: 1rem auto; animation: spin .9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
#btn-cancel-online { margin-top: 0.6rem; }
.badge.live { background: linear-gradient(90deg,#00d4ff,#00ffa3); color:#03121a; border:none; }

@media (max-width: 760px) {
  .settings-grid, .toggles { grid-template-columns: 1fr; }
  .panel { width: min(86vw, 480px); }
}