/* ============================================================
   CHESS BOARD & GAME — Fixed size, no flicker, smooth moves
   ============================================================ */

/* ── LAYOUT ── */
.game-layout{display:flex;gap:20px;max-width:1060px;margin:0 auto;padding:16px 16px;align-items:flex-start;justify-content:center;flex-wrap:wrap;min-height:calc(100vh - 60px)}
.board-wrapper{display:flex;flex-direction:column;gap:8px;flex-shrink:0;width:min(520px, calc(100vw - 32px))}

/* ── PLAYER CARDS ── */
.player-card{background:var(--bg-2);border:1px solid var(--border-1);padding:9px 14px;border-radius:var(--r-md);display:flex;justify-content:space-between;align-items:center;min-height:52px;transition:border-color .2s}
.player-card.active-player{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold-dim)}
.player-detail{display:flex;align-items:center;gap:10px;font-weight:700;font-size:.9rem;min-width:0}
.p-avatar{width:34px;height:34px;background:var(--bg-4);border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;font-size:1.15rem;flex-shrink:0;overflow:hidden}
.p-avatar img{width:100%;height:100%;object-fit:cover}
.player-meta{display:flex;flex-direction:column;gap:1px;min-width:0}
.player-name{font-size:.88rem;font-weight:700;color:var(--t-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}
.captured-row{display:flex;gap:1px;flex-wrap:wrap;font-size:.78rem;min-height:13px;color:var(--t-3);line-height:1}
.thinking-badge{font-size:.76rem;color:#fbbf24;font-weight:600;opacity:0;transition:opacity .2s;display:flex;align-items:center;gap:4px}
.thinking-badge.visible{opacity:1}
.thinking-dots span{animation:blink 1.2s infinite}.thinking-dots span:nth-child(2){animation-delay:.2s}.thinking-dots span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.2}40%{opacity:1}}
.clock-badge{background:#0c0b0a;color:#fff;padding:5px 11px;border-radius:var(--r-sm);font-family:var(--font-mono);font-size:1.15rem;font-weight:700;border:1px solid var(--border-2);transition:background .2s,color .2s;letter-spacing:1px;white-space:nowrap;flex-shrink:0}
.clock-badge.active{background:#e9e9e9;color:#000}
.clock-badge.low-time{background:#dc2626!important;color:#fff!important;animation:clockPulse 1s infinite}
@keyframes clockPulse{0%,100%{opacity:1}50%{opacity:.6}}

/* ── CHESSBOARD — FIXED SIZE, NO FLICKER ── */
.chessboard-container{
  width:100%;
  /* Perfect square always */
  aspect-ratio:1/1;
  position:relative;
  border-radius:4px;
  overflow:hidden;
  box-shadow:0 16px 48px rgba(0,0,0,.85);
  user-select:none;
  /* Prevent ANY layout shift */
  flex-shrink:0;
}
.chessboard{
  position:absolute;
  inset:0;
  display:grid;
  grid-template-columns:repeat(8,12.5%);
  grid-template-rows:repeat(8,12.5%);
  width:100%;
  height:100%;
}
.square{
  width:100%;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  position:relative;
  /* NO transition on background to prevent flicker */
}
.square.light{background:var(--board-light)}
.square.dark{background:var(--board-dark)}
.square.selected{background:rgba(20,85,30,.68)!important}
.square.last-move-from{background:rgba(155,199,0,.32)!important}
.square.last-move-to{background:rgba(155,199,0,.52)!important}
.square.in-check{background:rgba(220,40,40,.72)!important;animation:checkFlash .5s ease}
.square.disabled{cursor:default}
@keyframes checkFlash{0%{filter:brightness(1.5)}100%{filter:brightness(1)}}

/* ── PIECE — fixed size relative to cell, no font-size weirdness ── */
.piece{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:min(6.5vw, 54px);   /* capped, never too big */
  line-height:1;
  pointer-events:none;
  will-change:transform;
  transition:transform .12s ease;
  z-index:2;
}
/* On small boards use smaller font */
@media(max-width:480px){.piece{font-size:min(10vw, 38px)}}

/* Slide animation */
.piece.sliding{
  transition:transform .22s cubic-bezier(.25,.46,.45,.94);
}
.square.selected .piece{transform:scale(1.08)}

/* ── MOVE HINTS ── */
.square.hint::after{
  content:'';
  position:absolute;
  width:30%;height:30%;
  background:rgba(0,0,0,.19);
  border-radius:50%;
  z-index:3;
  pointer-events:none;
}
.square.capture-hint::after{
  width:86%;height:86%;
  background:transparent;
  border:5px solid rgba(0,0,0,.18);
}

/* ── COORDINATES ── */
.coord{position:absolute;font-size:min(1.4vw,10px);font-weight:700;opacity:.65;pointer-events:none;line-height:1;z-index:1}
.coord.file{bottom:2px;right:3px}.coord.rank{top:2px;left:3px}
.square.light .coord{color:#8a7450}.square.dark .coord{color:#f0d9b5}

/* ── BOARD OVERLAYS ── */
.board-overlay{position:absolute;inset:0;background:rgba(10,9,8,.91);display:none;align-items:center;justify-content:center;flex-direction:column;gap:14px;z-index:20;text-align:center;padding:24px}
.board-overlay.visible{display:flex}
.board-overlay h3{font-size:clamp(1.1rem,3vw,1.5rem)}.board-overlay p{color:var(--t-3);font-size:.88rem}
.promo-row{display:flex;gap:8px;margin-top:4px}
.promo-piece{width:clamp(48px,11vw,64px);height:clamp(48px,11vw,64px);background:var(--bg-3);border:2px solid var(--border-2);border-radius:var(--r-md);font-size:clamp(1.6rem,5vw,2.2rem);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--t-base)}
.promo-piece:hover{background:var(--gold);border-color:var(--gold);transform:scale(1.06)}

/* ── SIDEBAR ── */
.game-sidebar{width:272px;display:flex;flex-direction:column;gap:10px;flex-shrink:0}
.sidebar-box{background:var(--bg-2);border:1px solid var(--border-1);border-radius:var(--r-lg);padding:14px;display:flex;flex-direction:column;gap:10px}
.sidebar-box h3{font-size:.74rem;color:var(--t-3);text-transform:uppercase;letter-spacing:.8px;font-weight:600}

/* ── MOVE LIST ── */
.move-list-wrap{max-height:220px;overflow-y:auto}
.move-list{display:flex;flex-direction:column;gap:1px}
.move-row{display:grid;grid-template-columns:26px 1fr 1fr;gap:4px;padding:3px 5px;border-radius:3px;font-family:var(--font-mono);font-size:.8rem}
.move-row:nth-child(odd){background:rgba(255,255,255,.03)}
.move-row .m-idx{color:var(--t-4)}.move-row .m-w{color:var(--t-1)}.move-row .m-b{color:var(--t-2)}

/* ── CONTROLS ── */
.game-controls{display:flex;flex-direction:column;gap:7px}
.ctrl-row{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.status-banner{background:var(--bg-3);border:1px solid var(--border-1);border-radius:var(--r-sm);padding:9px 12px;font-size:.86rem;font-weight:600;color:var(--t-2);text-align:center}
.status-banner.check{border-color:rgba(217,64,64,.4);color:#ef6666;background:rgba(217,64,64,.07)}
.status-banner.info{border-color:rgba(201,162,39,.3);color:var(--gold);background:var(--gold-dim)}
.status-banner.success{border-color:rgba(88,161,74,.3);color:var(--green-light)}

/* ── ONLINE ── */
.connection-status{display:flex;align-items:center;gap:6px;font-size:.76rem;color:var(--t-3)}
.room-code-display{font-family:var(--font-mono);font-size:2.2rem;font-weight:800;letter-spacing:6px;text-align:center;color:var(--gold);padding:12px;background:var(--bg-3);border:1px solid var(--border-2);border-radius:var(--r-sm)}

/* ── CHAT ── */
.chat-messages{max-height:160px;overflow-y:auto;display:flex;flex-direction:column;gap:4px;padding:4px 0}
.chat-msg .chat-author{font-weight:700;color:var(--gold);font-size:.8rem}.chat-msg .chat-text{color:var(--t-2);font-size:.8rem}
.chat-input-row{display:flex;gap:6px;margin-top:6px}
.chat-input-row input{flex:1;background:var(--bg-3);border:1px solid var(--border-2);color:var(--t-1);border-radius:var(--r-sm);padding:6px 9px;font-size:.8rem;font-family:var(--font-sans)}
.chat-input-row input:focus{outline:none;border-color:var(--gold)}

/* ── DRAW/REMATCH BANNERS ── */
.draw-banner{background:rgba(201,162,39,.09);border:1px solid rgba(201,162,39,.28);border-radius:var(--r-sm);padding:10px 12px;font-size:.84rem;color:var(--gold);display:flex;justify-content:space-between;align-items:center;gap:10px}
.draw-banner-btns{display:flex;gap:6px}

/* ── DIFF CARDS (computer page) ── */
.diff-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.diff-card{background:var(--bg-3);border:1px solid var(--border-2);border-radius:var(--r-sm);padding:11px 9px;text-align:center;cursor:pointer;transition:all var(--t-fast)}
.diff-card:hover{border-color:var(--border-3)}.diff-card.active{border-color:var(--gold);background:var(--gold-dim)}
.diff-card .dc-icon{font-size:1.3rem;line-height:1}.diff-card .dc-name{font-size:.8rem;font-weight:700;color:var(--t-1);margin-top:3px}.diff-card .dc-desc{font-size:.7rem;color:var(--t-4);margin-top:1px}
.ai-info-box{background:var(--bg-3);border-radius:var(--r-sm);padding:11px;display:flex;flex-direction:column;gap:7px}
.ai-row{display:flex;justify-content:space-between;font-size:.8rem}
.ai-row span:first-child{color:var(--t-3)}.ai-row span:last-child{font-weight:600;font-family:var(--font-mono);color:var(--t-1)}

/* ── RESPONSIVE ── */
@media(max-width:900px){
  .game-sidebar{width:100%;max-width:520px}
  .game-layout{padding:12px}
}
@media(max-width:600px){
  .game-layout{gap:10px;padding:8px 8px;align-items:center}
  .board-wrapper{width:calc(100vw - 16px);max-width:100%}
  .game-sidebar{width:calc(100vw - 16px)}
  .clock-badge{font-size:1rem;padding:4px 9px}
  .player-name{max-width:130px}
}
@media(max-width:380px){
  .clock-badge{font-size:.9rem;padding:4px 7px;letter-spacing:.5px}
}