:root{--bg-deep: #171331;--bg-deep-2: #1f1a42;--bg-panel: #241d4a;--bg-panel-light: #322a5e;--board-frame: #12102a;--tile-face: #fbf6e9;--tile-face-pending: #ffe9b3;--tile-ink: #241d4a;--tile-ink-soft: #57507f;--accent-amber: #f6b93b;--accent-amber-dark: #d89526;--accent-teal: #38d9c9;--accent-teal-dark: #21a99b;--accent-coral: #ff6b6b;--accent-coral-dark: #e14b4b;--accent-mint: #4ade80;--accent-violet: #a78bfa;--accent-violet-dark: #7c5ce0;--text-on-dark: #f3f0ff;--text-muted: #b4acd9;--text-faint: #7d76a8;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 22px;--radius-pill: 999px;--shadow-tile: 0 2px 0 rgba(0, 0, 0, .22), 0 5px 10px rgba(0, 0, 0, .35);--shadow-tile-lifted: 0 6px 0 rgba(0, 0, 0, .22), 0 14px 22px rgba(0, 0, 0, .45);--shadow-panel: 0 10px 30px rgba(0, 0, 0, .35);--font-display: "Baloo 2", system-ui, sans-serif;--font-body: "Inter", system-ui, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:radial-gradient(120% 140% at 50% 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ease,transform .12s ease}.amath-cell--START{background:#a78bfa38;box-shadow:inset 0 0 0 1px #a78bfa80}.amath-cell--P2{background:#38d9c92e}.amath-cell--P3{background:#f6b93b2e}.amath-cell--E2{background:#a78bfa29}.amath-cell--E3{background:#ff6b6b29}.amath-cell__label{font-size:clamp(6px,1.6vw,9px);font-weight:800;color:var(--text-muted);letter-spacing:.01em}.amath-cell--pending{background:#ffe9b31f}.amath-board--dragging .amath-cell--droppable{box-shadow:inset 0 0 0 1.5px #4ade808c}.amath-board--dragging .amath-cell--not-droppable{box-shadow:inset 0 0 0 1.5px #ff6b6b66}.amath-cell--hover.amath-cell--droppable{background:#4ade8038;transform:scale(1.06);z-index:2}.amath-cell--hover.amath-cell--not-droppable{background:#ff6b6b38}.amath-cell--pulse-valid{animation:amGlowPulse .7s ease}.amath-cell--pulse-invalid{animation:amShake .4s ease}.amath-tile{font-family:var(--font-display);background:var(--tile-face);color:var(--tile-ink);border-radius:6px;display:flex;align-items:center;justify-content:center;position:relative;font-weight:700;box-shadow:var(--shadow-tile);-webkit-user-select:none;user-select:none;touch-action:none;cursor:grab;transition:transform .1s ease,box-shadow .1s ease}.amath-tile--board{width:100%;height:100%;font-size:clamp(9px,2.6vw,17px)}.amath-tile--rack{width:46px;height:46px;font-size:19px;flex-shrink:0}.amath-tile__value{line-height:1}.amath-tile__score{position:absolute;bottom:2px;right:3px;font-family:var(--font-body);font-size:8px;font-weight:800;color:var(--tile-ink-soft)}.amath-tile--pending{background:var(--tile-face-pending);box-shadow:0 0 0 2px var(--accent-amber-dark) inset,var(--shadow-tile);animation:amTilePop .16s ease}.amath-tile--selected{box-shadow:0 0 0 3px var(--accent-teal),var(--shadow-tile-lifted);transform:translateY(-3px)}.amath-tile--dimmed{opacity:.45;cursor:default}.amath-tile--ghost.amath-tile--rack{width:46px;height:46px;flex:0 0 46px;aspect-ratio:1 / 1}.amath-tile--ghost{box-shadow:var(--shadow-tile-lifted);opacity:.95}.amath-tile:active{cursor:grabbing}.amath-rack{display:flex;gap:8px;padding:10px;background:var(--bg-panel);border-radius:var(--radius-md);overflow-x:auto;min-height:68px;align-items:center;justify-content:safe center}.amath-rack__slot{display:flex}.amath-rack__empty{color:var(--text-faint);font-size:13px;padding:10px}.amath-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px}.amath-controls .amath-btn{width:100%}.amath-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0818b8;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:1000;animation:amFadeInUp .2s ease 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18px}.amath-gameover__best-move strong{color:var(--accent-teal)}.amath-gameover__actions{display:flex;flex-direction:column;gap:10px}@keyframes amFadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes amTilePop{0%{transform:scale(.7)}to{transform:scale(1)}}@keyframes amShake{10%,90%{transform:translate(-2px)}20%,80%{transform:translate(3px)}30%,50%,70%{transform:translate(-5px)}40%,60%{transform:translate(5px)}}@keyframes amGlowPulse{0%{box-shadow:inset 0 0 #4ade80cc}50%{box-shadow:inset 0 0 0 3px #4ade80cc}to{box-shadow:inset 0 0 #4ade8000}}@keyframes amPulseDot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}@keyframes amScoreFloat{0%{opacity:0;transform:translateY(4px)}20%{opacity:1;transform:translateY(0)}80%{opacity:1}to{opacity:0;transform:translateY(-14px)}}@media (max-width: 600px){.amath-rack{gap:4px;padding:6px;overflow-x:hidden}.amath-rack__slot{flex:0 0 calc((100% - 28px)/8);min-width:0}.amath-tile--rack{width:100%;height:auto;aspect-ratio:1 / 1;font-size:clamp(14px,4.8vw,18px)}}@media (max-width: 360px){.amath-tile--rack{width:40px;height:40px;font-size:16px}}.amath-assignment-picker{display:flex;flex-direction:column;gap:8px;padding:10px;background:var(--bg-panel);border:1px solid rgba(246,185,59,.28);border-radius:var(--radius-md)}.amath-assignment-picker__title{font-family:var(--font-display);font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--accent-amber);text-align:center}.amath-assignment-picker__options{display:flex;flex-wrap:wrap;justify-content:center;gap:6px}.amath-assignment-picker__option{min-width:38px;height:38px;padding:0 8px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:var(--bg-surface);color:var(--text-primary);font-family:var(--font-display);font-size:15px;font-weight:700;cursor:pointer;touch-action:manipulation}.amath-assignment-picker__option:hover{border-color:var(--accent-amber)}.amath-assignment-picker__option:active,.amath-assignment-picker__option--selected{background:#f6b93b2e;border-color:var(--accent-amber);color:var(--accent-amber)}@media (max-width: 600px){.amath-assignment-picker{padding:8px}.amath-assignment-picker__options{gap:4px}.amath-assignment-picker__option{min-width:34px;height:34px;padding:0 6px;font-size:14px}}.amath-game{width:100%;max-width:680px;gap:12px;padding-top:max(10px,env(safe-area-inset-top));padding-left:12px;padding-right:12px}.amath-game__top{display:grid;grid-template-columns:1fr auto;align-items:stretch;gap:8px}.amath-scoreboard{min-width:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:6px;padding:6px;background:linear-gradient(145deg,#282050,#211a42);border:1px solid rgba(167,139,250,.18);border-radius:18px;box-shadow:0 10px 28px #00000040}.amath-scoreboard__player{min-width:0;display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:58px;padding:7px 8px;border:2px solid transparent;border-radius:13px;background:#ffffff09;transition:border-color .15s ease,background .15s ease}.amath-scoreboard__player--active{border-color:var(--accent-amber);background:#f6b93b1a;box-shadow:inset 0 0 18px #f6b93b0d}.amath-scoreboard__name{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-muted);font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.amath-scoreboard__score{margin-top:1px;color:var(--tile-face);font-family:var(--font-display);font-size:27px;font-weight:800;line-height:1}.amath-scoreboard__player--active .amath-scoreboard__score{color:var(--accent-amber)}.amath-scoreboard__bag{min-width:42px;padding:5px 7px;border-radius:12px;background:#38d9c914;color:var(--accent-teal);display:flex;align-items:center;justify-content:center;gap:3px;font-size:12px;font-weight:800}.amath-timer{width:78px;min-width:78px;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:8px;border-radius:18px;background:linear-gradient(145deg,#282050,#211a42);border:1px solid rgba(56,217,201,.22);box-shadow:0 10px 28px #00000038}.amath-timer__value{font-family:var(--font-display);font-size:25px;font-weight:800;line-height:1;color:var(--accent-teal)}.amath-timer__bar{width:100%;height:4px;margin-top:7px;overflow:hidden;border-radius:99px;background:#ffffff14}.amath-timer__bar-fill{height:100%;border-radius:inherit;background:var(--accent-teal);transition:width .25s linear}.amath-timer--urgent{border-color:#ff6b6b8c}.amath-timer--urgent .amath-timer__value{color:var(--accent-coral)}.amath-timer--urgent .amath-timer__bar-fill{background:var(--accent-coral)}.amath-game__turn-row{min-height:30px;padding:0 3px;gap:8px}.amath-turn-indicator{display:inline-flex;align-items:center;min-height:26px;padding:4px 10px;border-radius:99px;background:#f6b93b1a;color:var(--accent-amber);font-size:11px;letter-spacing:.08em}.amath-ai-thinking{min-height:26px;padding:4px 9px;border-radius:99px;background:#a78bfa1a}.amath-game__board-wrap{width:100%;padding:6px;border-radius:18px;background:linear-gradient(145deg,#0e0b21,#17132f);box-shadow:0 14px 35px #00000057,inset 0 0 0 1px #a78bfa14}.amath-board{border-radius:12px;overflow:hidden}.amath-rack{width:100%;min-height:70px;padding:8px;gap:6px;border:1px solid rgba(167,139,250,.15);border-radius:18px;background:linear-gradient(145deg,#29214e,#211a40);box-shadow:0 10px 24px #00000038,inset 0 1px #ffffff09}.amath-rack__slot{border-radius:11px}.amath-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}.amath-controls .amath-btn{min-height:50px;padding:11px 12px;border-radius:15px;font-size:13px}.amath-controls .amath-btn--primary{box-shadow:0 3px 0 var(--accent-amber-dark),0 8px 20px #f6b93b2e}.amath-game__back{width:100%;min-height:44px;margin-top:0;border-radius:15px;font-size:12px}.amath-error-toast{margin:0 2px;box-shadow:0 8px 22px #0000002e}.amath-score-toast{margin-left:auto;padding:3px 9px;border-radius:99px;background:#4ade801a}.amath-game>.amath-assignment-picker{z-index:20}@media (max-width: 430px){.amath-game{padding-left:8px;padding-right:8px;gap:9px}.amath-game__top{grid-template-columns:minmax(0,1fr) 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