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8px;border-radius:6px;background:#ffffff06}.prep-opening-moves{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.prep-opening-count{color:var(--muted);font-variant-numeric:tabular-nums;flex-shrink:0}.prep-score{position:relative;width:74px;height:15px;flex-shrink:0;border-radius:8px;background:#333;overflow:hidden}.prep-score-fill{position:absolute;inset:0 auto 0 0;background:linear-gradient(90deg,#74b36e,#9fd39f)}.prep-score-num{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;font-size:10.5px;font-weight:700;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.7)}.prep-games-title{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}.prep-games{border-top:1px solid var(--border);padding-top:10px;display:flex;flex-direction:column;gap:4px}.prep-game{display:flex;justify-content:space-between;gap:10px;padding:6px 8px;border-radius:6px;text-align:left;color:var(--text);font-size:13px}.prep-game:hover{background:var(--panel-2)}.prep-game-players{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.prep-game-meta{color:var(--muted);flex-shrink:0}@media (max-width: 920px){.prep-columns{grid-template-columns:1fr}}@media (hover: none) and (pointer: coarse){.board-hint{display:none}}@media (max-width: 600px){.main{padding:12px 10px calc(72px + env(safe-area-inset-bottom,0px))}.page-title{font-size:21px}.board-col{max-width:min(100%,calc(100dvh - 300px))}.board-resize{display:none}.board-controls{padding-left:0;flex-wrap:wrap}.board-hint{display:none}.save-row{justify-content:stretch}.save-row .btn{flex:1 1 44%}.popular-list,.recent-grid,.training-grid,.home-cards{grid-template-columns:1fr}.hero-stats{gap:6px}.hero-stat{font-size:12px;padding:5px 10px}.home-hero{padding:20px 18px}.filter-bar .input.select{min-width:45%}.help-fab{width:46px;height:46px}.moves-panel{max-height:300px}.auth-card{padding:22px 16px 16px}.account-inline{flex-direction:column}.account-inline .input,.account-inline .pw-field{width:100%}}.empty-cta{display:flex;flex-direction:column;align-items:center;gap:6px;padding:44px 20px}.empty-cta-icon{font-size:40px;opacity:.7}.empty-cta p{margin:0 0 10px}.empty-cta-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.pane-tabs{display:none}@media (max-width: 920px){.pane-tabs{display:flex;gap:6px;width:100%}.pane-tabs button{flex:1;min-height:40px;padding:9px 10px;border-radius:8px;border:1px solid var(--border);color:var(--muted);font-weight:600;font-size:14px}.pane-tabs button.active{background:var(--panel-2);color:var(--accent);border-color:#5a5a5a}.side-col[data-pane=book] .side-extra,.side-col[data-pane=save] .side-main{display:none}}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (pointer: coarse),(max-width: 600px){.input,input[type=text],input[type=password],input[type=email],input[type=search],select,textarea,textarea.comment-box{font-size:16px}.btn{min-height:40px}.btn.small,.mini-toggle,.study-tab,.chip{min-height:38px}.settings-section-head{min-height:44px}.explorer-move{min-height:36px}}