/* ═══════════ Scacco — design tokens ═══════════
   bg espresso #14110D · pannelli #211B14 · avorio #EDE3CF
   noce #7A5C44 · oro #D2A53C · inchiostro #F2EBDD          */

:root{
  --bg:#14110D; --panel:#211B14; --panel-2:#2A2219;
  --light:#EDE3CF; --dark:#7A5C44; --frame:#3B2D20;
  --gold:#D2A53C; --gold-soft:#B8923A;
  --ink:#F2EBDD; --ink-dim:#A6977F;
  --good:#5E8C61; --danger:#B6452F;
  --radius:14px;
  --sq: min(11.5vw, 64px);
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%}
body{
  background:
    radial-gradient(1200px 600px at 50% -10%, #241D14 0%, var(--bg) 60%);
  color:var(--ink);
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  overflow:hidden;
  padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
h1,h2,h3{font-family:'Cinzel',serif;font-weight:700;letter-spacing:.04em}

/* l'attributo HTML [hidden] deve vincere su .overlay/.toast/.moves-panel/.host-info
   (i selettori di classe nel foglio d'autore battono lo stile UA [hidden]{display:none}) */
[hidden]{display:none !important}

/* ─── schermate ─── */
.screen{position:fixed;inset:0;display:none;overflow-y:auto}
.screen.active{display:block}

/* ─── menu ─── */
#menu .menu-inner{
  min-height:100%;display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:14px;padding:40px 24px;text-align:center;
}
.crest{width:96px;height:96px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #31271B, #1B1610 70%);
  border:1px solid #463826;display:grid;place-items:center;
  box-shadow:0 14px 40px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.06);
}
.crest-piece{width:62px;height:62px;filter:drop-shadow(0 4px 6px rgba(0,0,0,.5))}
.brand{font-size:46px;margin:4px 0 0;color:var(--gold);text-shadow:0 2px 18px rgba(210,165,60,.25)}
.tagline{margin:0 0 18px;color:var(--ink-dim);font-size:15px}
.menu-cards{display:flex;flex-direction:column;gap:12px;width:min(380px,100%)}
.card{
  display:flex;align-items:center;gap:16px;text-align:left;
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid #3A2F21;border-radius:var(--radius);padding:16px 18px;
  transition:transform .15s ease, border-color .15s ease;
}
.card:active{transform:scale(.98)}
.card:hover{border-color:var(--gold-soft)}
.card-glyph{width:34px;display:grid;place-items:center}
.card-glyph svg{width:30px;height:30px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.45))}
.card-text strong{display:block;font-size:16px}
.card-text small{color:var(--ink-dim);font-size:13px}
.menu-foot{color:#6E614F;font-size:12px;margin-top:18px;letter-spacing:.06em}

/* ─── setup ─── */
.setup-inner{max-width:420px;margin:0 auto;padding:24px 22px 40px;display:flex;flex-direction:column;gap:16px}
.back{align-self:flex-start;color:var(--ink-dim);font-size:15px;padding:8px 4px}
.back:hover{color:var(--gold)}
h2{font-size:26px;margin:0;color:var(--ink)}
.field-label{font-size:12px;color:var(--ink-dim);letter-spacing:.14em;text-transform:uppercase;margin:8px 0 0;font-family:'Inter',sans-serif;font-weight:600}
.seg{display:flex;background:var(--panel);border:1px solid #3A2F21;border-radius:12px;padding:4px;gap:4px}
.seg button{flex:1;padding:10px 6px;border-radius:9px;color:var(--ink-dim);font-weight:500;font-size:14px}
.seg button.on{background:var(--gold);color:#1B1409;font-weight:600}
.primary{
  background:linear-gradient(180deg,#E2B54B,var(--gold-soft));color:#1B1409;
  font-weight:600;font-size:16px;padding:15px;border-radius:12px;margin-top:10px;
  box-shadow:0 6px 20px rgba(210,165,60,.22);
  transition:transform .12s ease;
}
.primary:active{transform:scale(.97)}
.primary.slim{padding:10px 18px;font-size:14px;margin:0}
.ghost{border:1px solid #45382A;border-radius:10px;padding:10px 14px;color:var(--ink-dim)}
.ghost:hover{color:var(--ink);border-color:var(--gold-soft)}
.ghost.slim{padding:7px 11px;font-size:13px}
.row{display:flex;gap:10px;align-items:center}
.row.center{justify-content:center}
.hint{color:var(--ink-dim);font-size:13px;margin:2px 0}
.online-block{background:var(--panel);border:1px solid #34291C;border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;gap:10px}
#join-code{
  flex:1;background:#171209;border:1px solid #45382A;border-radius:10px;color:var(--gold);
  padding:12px;font-size:20px;letter-spacing:.35em;text-align:center;font-family:'Cinzel',serif;
}
#join-code:focus{outline:none;border-color:var(--gold)}
.host-info{text-align:center;display:flex;flex-direction:column;gap:8px}
.room-label{font-size:11px;letter-spacing:.18em;color:var(--ink-dim);text-transform:uppercase;margin:6px 0 0}
.room-code{font-family:'Cinzel',serif;font-size:34px;letter-spacing:.3em;color:var(--gold);margin:0}
.host-info .row{justify-content:center}
.waiting{color:var(--ink-dim);font-size:13px;animation:pulse 1.6s infinite}
@keyframes pulse{50%{opacity:.45}}

/* ─── partita ─── */
#game{display:none;flex-direction:column}
#game.active{display:flex}
.game-top,.game-bottom{padding:10px 14px;display:flex;align-items:center;gap:10px}
.game-top{justify-content:space-between}
.opp-tag,.me-tag{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px}
.color-dot{width:13px;height:13px;border-radius:50%;border:1px solid #5A4A36;flex:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.18)}
.color-dot.w{background:var(--light)}
.color-dot.b{background:#191410}
.cap-tray{display:flex;align-items:center;min-height:20px}
.cap-tray svg{width:19px;height:19px;margin-left:-5px;filter:drop-shadow(0 1px 1px rgba(0,0,0,.4))}
.cap-score{font-size:12px;color:var(--gold);margin-left:6px;font-weight:600}

.board-frame{
  flex:1;display:grid;place-items:center;padding:4px 10px;min-height:0;
}
.board-wrap{
  position:relative;
  width:min(94vw, 78vh, 620px); aspect-ratio:1;
  border-radius:10px;
  background:var(--frame);
  box-shadow:0 24px 60px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.07);
  padding:max(2.6%, 12px);
}
.squares,.pieces{position:absolute;inset:max(2.6%,12px);border-radius:4px;overflow:hidden}
.squares{display:grid;grid-template:repeat(8,1fr)/repeat(8,1fr)}
.sq{position:relative}
.sq.l{background:var(--light)} .sq.d{background:var(--dark)}
.sq.last{box-shadow:inset 0 0 0 100vmax rgba(210,165,60,.28)}
.sq.sel{box-shadow:inset 0 0 0 100vmax rgba(210,165,60,.42)}
.sq.chk{box-shadow:inset 0 0 0 100vmax rgba(182,69,47,.55)}
.sq .dot{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.sq .dot::after{content:"";width:26%;height:26%;border-radius:50%;background:rgba(27,20,9,.28)}
.sq.d .dot::after{background:rgba(255,248,230,.3)}
.sq .ring{position:absolute;inset:6%;border:3px solid rgba(27,20,9,.3);border-radius:50%;pointer-events:none}
.sq.d .ring{border-color:rgba(255,248,230,.35)}

.pieces{pointer-events:none}
.piece{
  position:absolute;width:12.5%;height:12.5%;
  transition:transform .22s cubic-bezier(.2,.8,.3,1);
  will-change:transform;
}
.piece svg{width:100%;height:100%;filter:drop-shadow(0 3px 3px rgba(0,0,0,.35))}
.piece.lift svg{filter:drop-shadow(0 9px 8px rgba(0,0,0,.45));transform:scale(1.08)}
.piece.fade{animation:fadeout .18s forwards}
@keyframes fadeout{to{opacity:0;transform:scale(.6)}}
.piece.born{animation:born .25s cubic-bezier(.2,.8,.3,1)}
@keyframes born{from{opacity:0;transform:scale(.5)}}

/* i colori dei pezzi sono ora attributi di presentazione sull'<use>
   (vedi pieceSVG in app.js): i selettori CSS non raggiungono lo shadow DOM */

.coords{position:absolute;display:flex;font-size:10px;font-weight:600;color:#C9B896;letter-spacing:.05em;pointer-events:none}
.coords.files{left:max(2.6%,12px);right:max(2.6%,12px);bottom:1px;justify-content:space-around}
.coords.ranks{top:max(2.6%,12px);bottom:max(2.6%,12px);left:2px;flex-direction:column;justify-content:space-around}

.status{flex:1;text-align:center;font-size:14px;color:var(--ink-dim)}
.status.alert{color:var(--gold);font-weight:600}
.game-bottom{flex-direction:column;gap:8px}
.game-bottom .me-tag{align-self:flex-start}
.game-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}

/* ─── pannello mosse ─── */
.moves-panel{
  position:fixed;right:0;top:0;bottom:0;width:min(290px,80vw);
  background:var(--panel);border-left:1px solid #3A2F21;
  display:flex;flex-direction:column;z-index:30;
  box-shadow:-18px 0 40px rgba(0,0,0,.5);
}
.moves-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid #34291C;font-family:'Cinzel',serif}
.moves-list{margin:0;padding:12px 16px 12px 36px;overflow-y:auto;font-size:14px;line-height:1.9;color:var(--ink-dim)}
.moves-list b{color:var(--ink);font-weight:500}

/* ─── overlay e dialoghi ─── */
.overlay{position:fixed;inset:0;background:rgba(10,8,5,.72);display:grid;place-items:center;z-index:40;backdrop-filter:blur(3px)}
.dialog{
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid #463826;border-radius:18px;padding:26px 28px;
  text-align:center;max-width:330px;width:88%;
  box-shadow:0 30px 80px rgba(0,0,0,.7);
  animation:born .25s cubic-bezier(.2,.8,.3,1);
}
.dialog-title{font-family:'Cinzel',serif;font-size:24px;color:var(--gold);margin:0 0 6px}
.dialog-sub{color:var(--ink-dim);font-size:14px;margin:0 0 18px}
.promo-row{display:flex;justify-content:center;gap:6px;margin-top:10px}
.promo-row button{width:62px;height:62px;border-radius:12px;background:#171209;border:1px solid #45382A}
.promo-row button:hover{border-color:var(--gold)}
.promo-row svg{width:100%;height:100%}

.toast{
  position:fixed;left:50%;bottom:max(24px, env(safe-area-inset-bottom));transform:translateX(-50%);
  background:#2E2517;border:1px solid #4B3C28;color:var(--ink);
  padding:11px 18px;border-radius:12px;font-size:14px;z-index:50;
  box-shadow:0 10px 30px rgba(0,0,0,.5);
}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
}
@media (min-width:760px){
  .game-bottom{flex-direction:row;justify-content:space-between}
  .game-bottom .me-tag{align-self:center}
}