*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#0f0f1a;--color-surface:#1a1a2e;--color-surface-2:#16213e;--color-primary:#e2b714;--color-primary-hover:#f0c92a;--color-primary-dark:#b8940f;--color-text:#e8e8e8;--color-text-muted:#8888a0;--color-text-dim:#5a5a72;--color-border:#2a2a44;--color-success:#4ade80;--color-error:#f87171;--color-error-bg:rgba(248, 113, 113, 0.1);--color-warning:#fbbf24;--color-info:#60a5fa;--color-piece-white-filter:drop-shadow(0 1px 2px rgba(0,0,0,0.5));--color-piece-black-filter:drop-shadow(0 1px 2px rgba(0,0,0,0.3)) brightness(0.85);--color-piece-strip-bg:rgba(120, 120, 120, 0.15);--color-drag-overlay-bg:rgba(15, 15, 26, 0.75);--color-turn-white-bg:#d2d2d2;--color-turn-white-color:#222;--color-turn-black-bg:#333;--color-turn-black-color:#ddd;--color-turn-hover:rgba(190, 163, 62, 0.6);--color-eval-equal-bg:#4c4c4c;--color-eval-white-adv-bg:#6c6c6c;--color-eval-black-adv-bg:#a2a2a2;--radius:12px;--radius-sm:8px;--radius-lg:16px;--shadow:0 4px 24px rgba(0, 0, 0, 0.3);--shadow-sm:0 2px 8px rgba(0, 0, 0, 0.2);--font:'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;--transition:0.2s ease;--strip-transition:0.25s ease;--board-light:#f0d9b5;--board-dark:#b58863;--color-last-move:rgba(155, 199, 0, 0.41)}[data-theme="light"]{--color-bg:#f5f5f7;--color-surface:#ffffff;--color-surface-2:#ebebf0;--color-primary:#286694;--color-primary-hover:#3a80b8;--color-primary-dark:#1d4d70;--color-text:#1a1a2e;--color-text-muted:#5a5a72;--color-text-dim:#8888a0;--color-border:#d0d0d8;--color-success:#22c55e;--color-error:#ef4444;--color-error-bg:rgba(239, 68, 68, 0.08);--color-warning:#f59e0b;--color-info:#3b82f6;--color-piece-white-filter:drop-shadow(0 1px 2px rgba(0,0,0,0.25));--color-piece-black-filter:drop-shadow(0 1px 2px rgba(0,0,0,0.15)) brightness(0.9);--color-piece-strip-bg:rgba(0, 0, 0, 0.06);--color-piece-strip-border:rgba(0, 0, 0, 0.1);--color-drag-overlay-bg:rgba(245, 245, 247, 0.85);--color-turn-white-bg:#e8e8e8;--color-turn-white-color:#222;--color-turn-black-bg:#444;--color-turn-black-color:#eee;--color-turn-hover:rgba(190, 163, 62, 0.6);--color-eval-equal-bg:#d0d0d0;--color-eval-white-adv-bg:#555;--color-eval-black-adv-bg:#d0d0d0;--shadow:0 4px 24px rgba(0, 0, 0, 0.08);--shadow-sm:0 2px 8px rgba(0, 0, 0, 0.06)}html{font-size:16px;scroll-behavior:smooth;scrollbar-gutter:stable}body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);min-width:270px;min-height:100vh;line-height:1.6;background-image:radial-gradient(ellipse at 20% 50%,rgb(226 183 20 / .03) 0%,transparent 50%),radial-gradient(ellipse at 80% 50%,rgb(226 183 20 / .02) 0%,transparent 50%)}a{color:var(--color-primary);text-decoration:none;font-weight:600;border-bottom:1px solid #fff0;transition:color 0.15s,border-color 0.15s}a:hover,a:focus-visible{color:var(--color-primary-hover);border-bottom-color:var(--color-primary-hover)}.emoji-icon{font-family:sans-serif;font-variant-emoji:text;-webkit-font-feature-settings:"liga" off}@keyframes fadeInUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes spin{to{transform:rotate(360deg)}}.container{max-width:1100px;margin:0 auto;padding:0rem 1.5rem;min-height:100vh;display:flex;flex-direction:column}.advisor-container{max-width:980px}.header{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.5rem;text-align:center;margin-bottom:.5rem;padding-top:.5rem}.header h1{grid-column:2;font-size:2rem;font-weight:700;color:var(--color-primary);letter-spacing:-.02em;margin-bottom:.25rem}.header-btn{display:inline-flex;align-items:center;justify-content:center;gap:.25rem;height:36px;box-sizing:border-box;padding:0 .5rem;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);color:var(--color-text);font-size:.8rem;font-weight:600;cursor:pointer;transition:border-color var(--transition),background var(--transition)}.header-btn:hover{border-color:var(--color-primary)}.header-mode{position:relative}.header-mode-label{font-size:1rem;line-height:1;white-space:nowrap}.header-mode-item-icon{width:1.3em;text-align:center}.header-mode-menu{position:absolute;top:calc(100% + 4px);right:0;z-index:1100;min-width:160px;padding:.25rem;border:1px solid var(--color-border);border-radius:10px;background:var(--color-surface);box-shadow:0 8px 24px rgb(0 0 0 / .25);text-align:left}.header-mode-item{display:flex;align-items:center;gap:.4rem;width:100%;padding:.5rem .6rem;border:none;border-radius:6px;background:none;color:var(--color-text);font-size:.85rem;cursor:pointer}.header-mode-item:hover{background:var(--color-bg)}.header-mode-check{width:1em;color:var(--color-primary);visibility:hidden}.header-mode-item.is-current .header-mode-check{visibility:visible}.header-mode-item.is-current{font-weight:700}.header .header-burger,.header .header-mode{display:none}.subtitle{color:var(--color-text-muted);font-size:1rem;max-width:540px;margin:0 auto}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.25rem;margin-bottom:1rem;box-shadow:var(--shadow);animation:fadeInUp 0.4s ease}.card-title-sm{font-size:.9rem;font-weight:600;color:var(--color-primary);margin-bottom:.75rem}.card-header{font-size:.9rem;font-weight:600;color:var(--color-primary);padding:.75rem 1rem;margin:0;border-bottom:1px solid var(--color-border);display:flex;align-items:center;gap:.5rem}.card-body{padding:.75rem 1rem 1rem 1rem}.toolbar{padding:.75rem 1rem}.toolbar-row{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;margin-bottom:.5rem}.toolbar-row:last-child{margin-bottom:0}.toolbar-group{display:flex;align-items:center;gap:.35rem;flex-wrap:wrap}.toolbar-label{font-size:.8rem;color:var(--color-text-muted);font-weight:500;margin-right:.25rem}.toolbar-hint{font-size:.75rem;color:var(--color-text-dim)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;padding:.5rem .9rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:.85rem;font-weight:500;cursor:pointer;transition:all var(--transition);font-family:var(--font);line-height:1.2;background:var(--color-surface-2);color:var(--color-text);text-decoration:none}.btn:hover:not(:disabled){border-color:var(--color-primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-icon{padding:.4rem .7rem;font-size:.8rem;white-space:nowrap}.btn-small{padding:.3rem .7rem;font-size:.8rem}.btn-small.active{background:var(--color-primary);color:var(--color-bg);border-color:var(--color-primary)}.btn-primary{background:var(--color-primary);color:var(--color-bg);border-color:var(--color-primary);font-weight:600;padding:.5rem 1.5rem}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover);border-color:var(--color-primary-hover);transform:translateY(-1px);box-shadow:0 4px 16px rgb(226 183 20 / .3)}.btn-primary.active{background:#fff0;color:var(--color-primary);border-color:var(--color-primary);box-shadow:0 0 12px rgb(226 183 20 / .25)}.btn-primary.active:hover:not(:disabled){background:rgb(226 183 20 / .1);color:var(--color-primary-hover)}.btn-toggle{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;box-sizing:border-box;padding:0;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface-2);cursor:pointer;transition:all var(--transition);font-size:.9rem;line-height:1}.btn-toggle:hover{border-color:var(--color-primary);background:rgb(226 183 20 / .1)}.btn-toggle.active{border-color:var(--color-primary);background:var(--color-primary);box-shadow:0 0 8px rgb(226 183 20 / .45);color:var(--color-bg)}.btn-toggle.active:hover{background:var(--color-primary-hover)}.piece-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:2px solid var(--color-border);border-radius:6px;background:var(--color-surface-2);cursor:pointer;transition:all var(--transition);padding:0}.piece-btn:hover{border-color:var(--color-primary);background:rgb(226 183 20 / .1)}.piece-btn.active{border-color:var(--color-primary);background:rgb(226 183 20 / .2);box-shadow:0 0 10px rgb(226 183 20 / .3)}.piece-icon{font-size:20px;line-height:1}.piece-icon-img{width:26px;height:26px;object-fit:contain;pointer-events:none}.white-piece{color:#fff;filter:drop-shadow(0 0 2px rgb(0 0 0 / .5))}.black-piece{color:#555;filter:drop-shadow(0 0 1px rgb(255 255 255 / .3))}.empty-icon{color:var(--color-text-dim);font-size:16px;font-weight:700}.toolbar-group-turn{gap:.25rem}.toolbar-group-nav{gap:.25rem}.toolbar-group-nav .btn-small{width:30px;height:30px;padding:0;display:inline-flex;align-items:center;justify-content:center}.toolbar-group-nav .btn-small:disabled{opacity:.3;cursor:not-allowed}.toolbar-group-nav .btn-small:disabled:hover{border-color:var(--color-border);color:var(--color-text);transform:none}.toolbar-group-engine{gap:.5rem}.toolbar-group-depth{gap:.5rem}.checkbox-label{display:inline-flex;align-items:center;gap:.2rem;font-size:.8rem;color:var(--color-text);cursor:pointer}.checkbox-label input[type="checkbox"]{accent-color:var(--color-primary);width:14px;height:14px}.control-row{display:flex;width:100%;align-items:center;justify-content:space-between;gap:.5rem}.control-row-label{font-size:.8rem;color:var(--color-text-muted);font-weight:500}.control-row .btn-toggle{flex:0 0 auto;width:72px;height:18px;box-sizing:border-box;padding:.1rem .6rem;font-size:.7rem;gap:.2rem;white-space:nowrap;overflow:hidden;transition:opacity var(--transition),width var(--transition),padding var(--transition),margin var(--transition),transform var(--transition)}.lang-bar{display:flex;align-items:center;justify-content:center;gap:.5rem;font-size:.85rem;color:var(--color-text-muted)}.lang-label{font-size:.75rem;font-weight:500;color:var(--color-text-dim)}.lang-switcher{display:flex;gap:.35rem}.lang-flag{width:18px;height:18px;border-radius:50%;display:block;transition:transform var(--transition),opacity var(--transition);opacity:.4}.lang-link{display:inline-flex;align-items:center;padding:.15rem;border:none;border-radius:50%;background:#fff0;text-decoration:none;transition:all var(--transition);cursor:pointer}.lang-link:hover,.lang-link:focus-visible{border-bottom:none}.lang-link:hover .lang-flag{opacity:.8;transform:scale(1.15)}.lang-link.active .lang-flag{opacity:1;transform:scale(1.05)}.turn-switch-btn{flex:1;display:inline-flex;align-items:center;justify-content:center;height:36px;box-sizing:border-box;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:.4rem .5rem;font-size:.8rem;background:var(--color-surface-2);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition);text-align:center}.turn-switch-btn[data-turn="w"]{background:var(--color-turn-white-bg);color:var(--color-turn-white-color)!important}.turn-switch-btn[data-turn="b"]{background:var(--color-turn-black-bg);color:var(--color-turn-black-color)!important}.turn-switch-btn.active{box-shadow:inset 0 0 0 3px var(--color-primary);font-weight:600}.turn-switch-btn:hover:not(.active):not(:disabled){background:var(--color-turn-hover);color:var(--color-text)}.turn-switch-btn:disabled{opacity:1;cursor:not-allowed}.mode-card .card-body{padding:.6rem}.mode-group{display:flex;width:100%;gap:.25rem;align-items:center}.mode-group .mode-switch-btn{flex:1;height:36px;box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;padding:.3rem .4rem;font-size:.78rem;white-space:nowrap;text-align:center}.mode-group .mode-switch-btn.active{box-shadow:inset 0 0 0 2px var(--color-primary);font-weight:600}.hints-card{padding:.6rem 1rem;text-align:center}.hints-card p{font-size:.8rem;color:var(--color-text-dim)}.hints-card kbd{background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:4px;padding:.1rem .4rem;font-family:inherit;font-size:.78rem;color:var(--color-text-muted)}.pos-row{margin-bottom:.5rem;width:100%}.pos-row:last-child{margin-bottom:0}.pos-section-divider{margin-top:.8rem;padding-top:.8rem;border-top:1px solid var(--color-border)}.board-layout{display:flex;gap:1rem;align-items:flex-start;justify-content:center}.board-wrapper{position:relative;flex:0 0 auto;display:inline-flex;flex-direction:column;align-items:center;gap:3px;padding:.75rem .75rem .75rem 1rem;min-width:0}.board-frame{display:flex;flex-direction:column;align-items:stretch;box-sizing:content-box;width:calc(8 * var(--cell-size, 70px));max-width:calc(8 * var(--cell-size, 70px));border:1px solid var(--color-border);border-radius:6px}.board-area{display:flex;flex-direction:row;align-items:stretch;gap:0;min-width:0}.cell[data-coord-rank]::before,.coord-file{position:absolute;z-index:0;pointer-events:none;font-size:clamp(7px, calc(var(--cell-size, 70px) * 0.2), 11px);font-weight:700;line-height:1}.cell[data-coord-rank]::before{content:attr(data-coord-rank);top:2px;right:2px}.coord-file{bottom:2px;left:2px}.cell.light[data-coord-rank]::before,.cell.light .coord-file{color:var(--board-dark)}.cell.dark[data-coord-rank]::before,.cell.dark .coord-file{color:var(--board-light)}.board-area{position:relative}.eval-bar-spacer{display:none}.eval-bar-col{position:absolute;left:-14px;top:0;bottom:0;display:flex;flex-direction:column;align-items:stretch}.eval-bar{position:relative;width:10px;flex:1 1 auto;border-radius:3px;overflow:hidden;background:var(--color-turn-black-bg);opacity:0;pointer-events:none;transition:opacity 0.2s ease,width 0.15s ease}.eval-bar.is-active{opacity:1}.eval-bar-fill{position:absolute;left:0;width:100%;height:50%;background:var(--color-turn-white-bg);transition:height 0.3s ease;bottom:0}.eval-bar.is-flipped .eval-bar-fill{bottom:auto;top:0}.eval-bar::after{content:'';position:absolute;inset:0;background-image:repeating-linear-gradient(to bottom,transparent,transparent calc(12.5% - 1px),rgb(128 128 128 / .5) calc(12.5% - 1px),rgb(128 128 128 / .5) 12.5%);pointer-events:none}.eval-bar-value{position:absolute;left:0;width:100%;text-align:center;font-size:.55rem;font-weight:700;line-height:1;pointer-events:none;white-space:nowrap;writing-mode:vertical-rl;transform:rotate(180deg)}@media (max-width:500px){.eval-bar-col{left:-9px}.eval-bar{width:5px}.eval-bar-value{display:none}}.board{display:grid;grid-template-columns:repeat(8,var(--cell-size,70px));grid-template-rows:repeat(8,var(--cell-size,70px));overflow:hidden;touch-action:none;position:relative}.cell{display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background 0.15s;user-select:none;position:relative}.cell.light{background:var(--board-light)}.cell.dark{background:var(--board-dark)}.cell.last-move-from,.cell.last-move-to{background-image:linear-gradient(var(--color-last-move),var(--color-last-move))}.cell:hover{filter:brightness(1.1)}.cell.drag-over{outline:3px solid var(--color-primary);outline-offset:-3px;z-index:2}.cell.from-highlight{box-shadow:inset 0 0 10px 5px #1417e2}.cell.to-highlight{box-shadow:inset 0 0 12px 7px #4ade80}.cell.from-highlight .piece,.cell.to-highlight .piece{filter:brightness(1.2)}.cell.low-confidence{outline:3px solid #ff33334d!important;outline-offset:-3px;z-index:2;box-shadow:inset 0 0 7px 5px rgb(255 51 51 / .5)}.cell.low-confidence .piece{filter:brightness(1.1)}.cell.king-in-check{box-shadow:inset 0 0 12px 6px rgb(220 38 38 / .85);z-index:2}.cell.legal-move::after{content:'';position:absolute;width:26%;height:26%;border-radius:50%;background:rgb(0 0 0 / .25);pointer-events:none;z-index:3}.cell.legal-move.cell-capture::after{width:80%;height:80%;background:#fff0;border:4px solid rgb(0 0 0 / .25);border-radius:50%}.piece{width:90%;height:90%;max-width:100px;max-height:100px;object-fit:contain;cursor:grab;transition:transform 0.15s,filter 0.15s;z-index:1;pointer-events:auto;user-select:none;-webkit-user-drag:element;touch-action:none;-webkit-touch-callout:none}.piece:hover{transform:scale(1.1)}.piece:active{cursor:grabbing}.piece.dragging{opacity:.5;transform:scale(.9)}.piece.white{filter:var(--color-piece-white-filter)}.piece.black{filter:var(--color-piece-black-filter)}.piece.piece-no-moves{cursor:default}.piece.piece-no-moves:hover{transform:none}#chessBoard.bot-thinking .cell,#chessBoard.bot-thinking .piece{cursor:progress}.arrow-overlay{pointer-events:none}.promo-backdrop{position:absolute;inset:0;background:rgb(0 0 0 / .45);z-index:20}.promo-chooser{position:absolute;width:12.5%;height:50%;display:flex;flex-direction:column;z-index:21;box-shadow:0 2px 10px rgb(0 0 0 / .45)}.promo-chooser-up{flex-direction:column-reverse}.promo-btn{flex:1 1 0%;min-height:0;display:flex;align-items:center;justify-content:center;padding:5%;border:none;cursor:pointer;background:var(--color-surface);box-shadow:inset 0 0 0 1px var(--color-border);transition:background 0.15s}.promo-btn:hover,.promo-btn:focus-visible{background:var(--color-primary)}.promo-btn img{width:100%;height:100%;object-fit:contain;pointer-events:none}.side-indicator{display:flex;align-items:center;gap:.4rem;box-sizing:border-box;width:100%;height:var(--side-indicator-height,26px);padding:0;font-size:.75rem;font-weight:600;line-height:1;white-space:nowrap;overflow:hidden;transition:box-shadow var(--transition)}.side-indicator-top{border-bottom:1px solid var(--color-border);border-radius:5px 5px 0 0}.side-indicator-bottom{border-top:1px solid var(--color-border);border-radius:0 0 5px 5px}.side-indicator.is-active{box-shadow:inset 0 0 0 1px var(--color-primary)}.side-indicator-dot{flex:0 0 auto;width:10px;height:10px;margin-left:.5rem;border-radius:50%;border:1px solid currentColor}.side-indicator>:last-child{margin-right:.5rem}.side-indicator-white{background:var(--color-turn-white-bg);color:var(--color-turn-white-color)}.side-indicator-white .side-indicator-dot{background:#fff}.side-indicator-black{background:var(--color-turn-black-bg);color:var(--color-turn-black-color)}.side-indicator-black .side-indicator-dot{background:#111}.side-indicator-label{overflow:hidden;text-overflow:ellipsis}.side-indicator-bot{display:inline-flex;align-items:center;gap:.25rem;flex:0 0 auto;padding:.1rem .35rem;border:none;border-radius:4px;font-family:inherit;font-size:.65rem;font-weight:700;line-height:1;text-transform:uppercase;letter-spacing:.03em;background:var(--color-primary);color:var(--color-bg);cursor:pointer}.side-indicator-bot:hover{opacity:.8}.side-indicator-bot-icon{font-size:.8rem;line-height:1}.side-indicator-spinner{flex:0 0 auto;width:0;height:12px;box-sizing:border-box;border:0 solid #fff0;border-top-color:currentColor;border-right-color:currentColor;border-radius:50%}.side-indicator-spinner.active{width:12px;border-width:2px;animation:side-indicator-spin 0.8s linear infinite}@keyframes side-indicator-spin{to{transform:rotate(360deg)}}.side-indicator-material{display:flex;align-items:center;gap:.1rem;flex:0 1 auto;min-width:0;margin-left:auto;margin-right:.5rem;line-height:1;overflow:hidden}.side-indicator-material-icon{flex:0 0 auto;font-size:1.05em;opacity:.75}.side-indicator-material-value{flex:0 0 auto;margin-left:.15rem;font-variant-numeric:tabular-nums}.board-column{display:flex;flex-direction:column;align-items:stretch;width:fit-content;gap:1rem;min-width:0;max-width:100%}.board-column>.card{margin-bottom:0}.board-action-bar{--action-bar-height:36px;--action-bar-btn-width:50px;--action-bar-btn-min-width:34px;display:flex;align-items:center;justify-content:center;gap:.35rem;box-sizing:border-box;width:100%;min-width:0;height:auto;padding:.4rem .5rem;flex-wrap:nowrap}.board-action-bar .action-bar-btn{flex:0 1 auto;min-width:var(--action-bar-btn-min-width,34px);height:var(--action-bar-height,36px);box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;gap:.3rem;padding:.3rem .5rem;font-size:.78rem;white-space:nowrap}.board-action-bar .action-bar-turn-group .turn-switch-btn,.board-action-bar #btnAutoTurn{flex:0 1 auto;width:var(--action-bar-btn-width,50px);min-width:var(--action-bar-btn-min-width,34px);padding-left:0;padding-right:0}.board-action-bar .action-bar-turn-group{display:contents}.board-action-bar .action-bar-turn-group .turn-switch-btn:first-child{margin-left:auto}.board-action-bar .action-bar-turn-group .turn-switch-btn+.turn-switch-btn{margin-left:calc(0.15rem - 0.35rem)}.board-action-bar .action-bar-turn-group .turn-switch-btn{height:var(--action-bar-height,36px);box-sizing:border-box;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}.board-action-bar .turn-switch-glyph{font-size:1rem;line-height:1}.board-action-bar .turn-switch-btn .btn-text,.board-action-bar #btnAutoTurn .btn-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.board-action-bar #btnAutoTurn{gap:0;flex:0 1 auto}.strip-slot{display:grid;grid-template-rows:1fr;width:100%;min-width:0;transition:grid-template-rows var(--strip-transition)}.strip-slot>.piece-strip{height:auto;min-height:0;overflow:hidden}.strip-slot.is-collapsed{grid-template-rows:0fr}.strip-slot.no-anim{transition:none}@media (prefers-reduced-motion:reduce){.strip-slot{transition:none}}.piece-strip{display:flex;width:100%;min-width:0;height:var(--strip-height,48px);align-items:center;justify-content:center;gap:2px;padding:0;margin:0 0;box-sizing:border-box;--strip-height:48px}.piece-strip-top,.piece-strip-bottom{background:var(--color-piece-strip-bg)}.piece-strip-top{border-bottom:1px solid var(--color-border)}.piece-strip-bottom{border-top:1px solid var(--color-border)}.piece-strip-btn{display:inline-flex;align-items:center;justify-content:center;flex:0 1 var(--strip-height,48px);width:var(--strip-height,48px);height:var(--strip-height,48px);min-width:0;border:none;border-radius:6px;background:#fff0;cursor:pointer;transition:all 0.15s ease;padding:0}.piece-strip-btn:hover{box-shadow:inset 0 0 0 2px var(--color-primary);background:rgb(226 183 20 / .1)}.piece-strip-btn.active{background:rgb(226 183 20 / .2);box-shadow:inset 0 0 0 2px var(--color-primary),0 0 8px rgb(226 183 20 / .3)}.piece-strip-btn img{width:80%;height:80%;object-fit:contain;pointer-events:none;user-select:none}.piece-strip-btn.empty-btn{box-shadow:none;opacity:.6}.piece-strip-btn.empty-btn:hover{opacity:1;box-shadow:inset 0 0 0 2px var(--color-text-dim)}.piece-strip-btn.empty-btn.active{opacity:1;box-shadow:inset 0 0 0 2px var(--color-primary),0 0 8px rgb(226 183 20 / .3)}.piece-strip-btn .empty-icon{font-size:16px;color:var(--color-text-dim)}.piece-strip-btn.active .empty-icon{color:var(--color-primary)}.piece-strip-btn.castle-btn{border:none;flex:0 1 auto;width:auto;min-width:0;height:var(--strip-height,48px);padding:0 4px;font-size:10px;font-weight:600;white-space:nowrap;line-height:1;color:var(--color-text-dim);background:#fff0;cursor:pointer;transition:background var(--transition),color var(--transition);border-radius:6px}.piece-strip-btn.castle-btn:hover:not(.disabled){background:rgb(226 183 20 / .1)}.piece-strip-btn.castle-btn.active{color:var(--color-primary);background:#fff0;border:none;box-shadow:none;font-weight:900}.piece-strip-btn.castle-btn.disabled{opacity:.25;cursor:not-allowed;color:var(--color-text-dim)}.piece-strip-btn.castle-btn.disabled:hover{background:#fff0;color:var(--color-text-dim);opacity:.25}.piece-strip-btn.king-disabled{opacity:.35;cursor:not-allowed;filter:grayscale(.7)}.piece-strip-btn.king-disabled:hover{box-shadow:none;background:#fff0}.strip-fill{flex:1;min-width:2px}.castle-icon{font-size:.7rem;color:var(--color-text-muted)}.drag-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--color-drag-overlay-bg);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);z-index:99999;display:none;align-items:center;justify-content:center;pointer-events:none;transition:opacity 0.2s ease}.drag-overlay.active{display:flex}.drag-overlay-content{display:flex;flex-direction:column;align-items:center;gap:1rem;padding:2.5rem 3rem;border:2px dashed var(--color-primary);border-radius:var(--radius-lg);background:rgb(226 183 20 / .08);color:var(--color-primary)}.drag-overlay-icon{opacity:.8}.drag-overlay-text{font-size:1.1rem;font-weight:600;color:var(--color-primary);text-align:center}.board-restore-overlay{position:absolute;inset:0;z-index:10;display:none;align-items:center;justify-content:center;background:var(--color-drag-overlay-bg);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);border-radius:inherit;text-align:center;padding:1rem}.board-restore-overlay.active{display:flex}.board-restore-overlay-content{display:flex;flex-direction:column;align-items:center;gap:.75rem}.board-restore-overlay-text{font-size:1rem;font-weight:600;color:var(--color-text)}.board-restore-overlay-actions{display:flex;flex-direction:column;gap:.5rem;width:100%;max-width:200px}.board-restore-overlay-actions .btn{width:100%}.side-panel{flex:1;min-width:260px;max-width:340px}.side-panel .card{padding:0}.fen-display{display:flex;align-items:center;gap:0;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:0;overflow:hidden}.fen-label{font-size:.65rem;font-weight:700;color:var(--color-text-dim);text-transform:uppercase;letter-spacing:.06em;padding:.4rem .5rem;background:var(--color-surface-2);flex-shrink:0;user-select:none;border-right:1px solid var(--color-border);line-height:1.3;align-self:stretch;display:flex;align-items:center}.fen-input{flex:1;font-family:'Consolas','Courier New',monospace;font-size:.78rem;color:var(--color-primary);word-break:break-all;line-height:1.4;background:#fff0;border:none;outline:none;padding:.5rem .5rem;margin:0;min-width:0;transition:color var(--transition),background var(--transition)}.fen-input:focus{color:var(--color-primary-hover)}.fen-input.fen-input-error{color:var(--color-error)!important;background:rgb(248 113 113 / .08)}.btn-copy{display:flex;align-items:center;justify-content:center;background:var(--color-surface-2);border:none;border-left:1px solid var(--color-border);color:var(--color-text-muted);padding:0 .5rem;cursor:pointer;transition:all var(--transition);flex-shrink:0;align-self:stretch;min-height:100%;box-sizing:border-box}.btn-copy:hover{color:var(--color-primary);background:rgb(226 183 20 / .1)}.btn-copy.copied{color:var(--color-success);background:rgb(74 222 128 / .1)}.upload-hints{margin-top:.5rem;text-align:center}.upload-hint-text{font-size:.7rem;color:var(--color-text-muted);margin-bottom:.15rem}.upload-hint-link{font-size:.72rem;color:var(--color-text-dim);font-family:'Consolas',monospace}.upload-spinner{display:none;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem;gap:.75rem;animation:fadeInUp 0.2s ease}.upload-spinner-icon{width:36px;height:36px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin 0.8s linear infinite}.upload-spinner p{color:var(--color-text-muted);font-size:.85rem;margin:0}.recognize-result{margin-top:.5rem;padding:.75rem 1rem;border-radius:var(--radius-sm);background:rgb(74 222 128 / .1);border:1px solid rgb(74 222 128 / .3);color:var(--color-success);font-size:.9rem;display:flex;flex-direction:column;align-items:center;gap:.5rem;animation:fadeInUp 0.2s ease}.recognize-result #recognizeResultText{font-weight:600}.btn-invert-result{white-space:nowrap;background:var(--color-surface-2);border:1px solid var(--color-border);color:var(--color-text);padding:.4rem .8rem;border-radius:var(--radius-sm);font-size:.8rem;cursor:pointer;transition:all var(--transition);display:inline-flex;align-items:center;gap:.35rem}.btn-invert-result:hover{border-color:var(--color-primary);color:var(--color-primary);background:rgb(226 183 20 / .1)}.status-msg{margin-top:.5rem;padding:.4rem .75rem;border-radius:var(--radius-sm);font-size:.8rem;text-align:center;animation:fadeInUp 0.2s ease}.status-success{background:rgb(74 222 128 / .1);border:1px solid rgb(74 222 128 / .3);color:var(--color-success)}.status-error{background:var(--color-error-bg);border:1px solid rgb(248 113 113 / .3);color:var(--color-error)}.screenshot-link{color:var(--color-text-muted);text-decoration:underline;cursor:pointer;transition:color var(--transition)}.screenshot-link:hover{color:var(--color-text-dim)}.screenshot-link:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:2px}.hotkey-highlight{color:var(--color-primary)}.spinner-card{text-align:center;padding:1.5rem}.spinner{width:32px;height:32px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin 0.8s linear infinite;margin:0 auto .75rem auto}.spinner-card p{color:var(--color-text-muted);font-size:.85rem}.mini-spinner{display:inline-flex;align-items:center;vertical-align:middle;margin-left:.5rem}.mini-spinner-icon{display:inline-block;width:14px;height:14px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin 0.8s linear infinite}.toast-error{position:fixed;top:1.5rem;left:50%;transform:translateX(-50%) translateY(-20px);background:var(--color-error);color:#fff;padding:.75rem 1.5rem;border-radius:var(--radius);font-size:.9rem;font-weight:500;box-shadow:0 4px 20px rgb(248 113 113 / .4);opacity:0;transition:all 0.3s ease;z-index:1000;max-width:90vw;text-align:center}.toast-error.show{opacity:1;transform:translateX(-50%) translateY(0)}.side-footer{text-align:center;padding:.25rem 0 .5rem;color:var(--color-text-dim);font-size:.85rem}.side-footer-links{display:flex;align-items:center;justify-content:center;gap:.3rem;flex-wrap:wrap}.side-footer-copyright{margin-top:.5rem}.side-footer-lang-bar{margin-top:.75rem}.side-footer-link{color:var(--color-text-muted);text-decoration:none;cursor:pointer;border-bottom:1px solid #fff0;transition:color var(--transition),border-color var(--transition);font-weight:500}.side-footer-link:hover{color:var(--color-primary);border-bottom-color:var(--color-primary)}.side-footer-link:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px;border-radius:2px}.advice-result{padding:.5rem 0}.advice-move{display:flex;align-items:center;gap:.75rem;margin-bottom:.5rem}.advice-arrow{font-size:1.2rem;font-weight:700;font-family:'Consolas',monospace;color:var(--color-primary);background:var(--color-bg);padding:.3rem .7rem;border-radius:var(--radius-sm);letter-spacing:.1em}.capture-badge{font-size:.7rem;font-weight:600;padding:.15rem .5rem;border-radius:4px;background:rgb(248 113 113 / .2);color:var(--color-error)}.advice-eval{font-size:.9rem;margin-bottom:.3rem}.advice-meta{font-size:.75rem;color:var(--color-text-dim);margin-bottom:.3rem}.eval-good{color:var(--color-success);font-weight:600}.equal{color:var(--color-warning);font-weight:600;background:var(--color-eval-equal-bg)}.eval-bad{color:var(--color-error);font-weight:600}.eval-mate{color:var(--color-error);font-weight:700}.eval-white-adv{color:#fff;background:var(--color-eval-white-adv-bg)}.eval-black-adv{color:#222;background:var(--color-eval-black-adv-bg);font-weight:900}.eval-white-adv,.eval-black-adv,.equal{display:inline-block;padding:0rem .2rem;border-radius:10px;font-weight:700}.pv-line{font-size:.8rem;color:var(--color-text-muted);background:var(--color-bg);padding:.3rem .6rem;border-radius:var(--radius-sm);margin-bottom:.5rem;font-family:'Consolas',monospace}.top-moves{margin-top:.5rem}.top-moves strong{font-size:.8rem;color:var(--color-text-muted)}.top-moves ol{margin:.3rem 0 0 1.2rem;font-size:.8rem}.top-moves li code{color:var(--color-text);font-family:'Consolas',monospace}.advice-result.mate,.advice-result.stalemate{text-align:center;padding:1rem}.advice-result.error{text-align:center;padding:.5rem;color:var(--color-error)}.advice-icon{font-size:1.5rem;display:block;margin-bottom:.5rem}.advice-text{font-size:1rem;font-weight:600}.mate-in-live{color:#e74c3c;font-weight:600}.advice-accordion{padding:0;overflow:hidden}.advice-summary{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;cursor:pointer;user-select:none;font-size:.9rem;font-weight:600;color:var(--color-primary);list-style:none;transition:background var(--transition);margin:0;border-bottom:1px solid var(--color-border)}.advice-summary::-webkit-details-marker{display:none}.advice-summary::after{content:'▾';margin-left:auto;font-size:2rem;line-height:.6;color:var(--color-text-dim);transition:transform var(--transition)}.advice-accordion[open] .advice-summary::after{content:'▴'}.advice-summary:hover::after{color:var(--color-primary)}.advice-summary:hover{background:rgb(226 183 20 / .05)}.advice-accordion-body{padding:.75rem 1rem 1rem 1rem}.collapsible-slot{display:grid;grid-template-rows:minmax(0,1fr);transition:grid-template-rows 0.2s ease}.collapsible-slot.is-collapsed{grid-template-rows:minmax(0,0fr)}.collapsible-slot>*{min-height:0;max-height:10rem;overflow:hidden;transition:max-height 0.2s ease,padding 0.2s ease,margin 0.2s ease,border-width 0.2s ease}.collapsible-slot.is-collapsed>*{max-height:0;padding-top:0;padding-bottom:0;margin-top:0;margin-bottom:0;border-top-width:0;border-bottom-width:0}#adviceContent{min-height:2.2rem;transition:min-height 0.2s ease}.advice-content-wrap{position:relative}.advice-line-spinner{display:none;position:absolute;top:50%;right:.5rem;transform:translateY(-50%);margin-left:0;pointer-events:none}.advice-content-wrap.is-analyzing .advice-line-primary{position:relative;padding-right:1.75rem}.advice-content-wrap.is-analyzing .advice-line-primary .advice-line-spinner{display:inline-flex}.advice-content-wrap.is-analyzing.is-empty>.advice-line-spinner{display:inline-flex;top:.9rem;transform:none}.advice-result.multipv{display:flex;flex-direction:column;gap:.35rem}.advice-line{display:flex;align-items:center;gap:.4rem;padding:.35rem .5rem;border-radius:var(--radius-sm);background:var(--color-bg);border:1px solid #fff0;cursor:pointer;transition:all 0.15s ease}.advice-line:hover{border-color:var(--color-primary);background:rgb(226 183 20 / .05)}.advice-line-primary{border-color:rgb(226 183 20 / .3);background:rgb(226 183 20 / .08)}.line-num{font-size:.7rem;font-weight:700;color:var(--color-text-dim);min-width:1.2rem;text-align:right}.line-move{font-size:.9rem;font-weight:700;font-family:'Consolas',monospace;color:var(--color-primary);min-width:4.5rem}.line-eval{font-size:.85rem;font-weight:600;min-width:3.5rem}.pv-snippet{font-size:.72rem;color:var(--color-text-muted);font-family:'Consolas',monospace;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.advice-stats{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-top:.25rem;padding-top:.25rem;border-top:1px solid var(--color-border);min-height:1.8rem}.advice-stats-text{font-size:.72rem;color:var(--color-text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.advice-settings-btn{margin-left:0;flex-shrink:0}.engine-source-label{font-size:.72rem;color:var(--color-text-muted);margin-bottom:.5rem;padding:.35rem .6rem;background:rgb(226 183 20 / .08);border-radius:var(--radius-sm);display:flex;align-items:center;gap:.4rem;flex-wrap:wrap;line-height:1.4}.engine-loading-progress{display:flex;align-items:center;gap:.5rem;margin-bottom:.5rem}.engine-loading-progress-track{flex:1;height:6px;background:var(--color-border);border-radius:3px;overflow:hidden}.engine-loading-progress-fill{height:100%;width:0%;background:var(--color-primary);border-radius:3px;transition:width 0.15s ease-out}.engine-loading-progress-fill.indeterminate{width:35%!important;animation:engine-progress-indeterminate 1.2s ease-in-out infinite}.engine-loading-progress-text{font-size:.7rem;color:var(--color-text-muted);white-space:nowrap}@keyframes engine-progress-indeterminate{0%{margin-left:0%}50%{margin-left:65%}100%{margin-left:0%}}.engine-status{font-size:.75rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:55%;flex-shrink:1;min-width:0;transition:opacity var(--transition)}.engine-status-loading{color:var(--color-warning)}.engine-status-ready{color:var(--color-success)}.engine-status-error{color:var(--color-error)}.engine-info{color:var(--color-text-muted)}.depth-range{-webkit-appearance:none;appearance:none;width:80px;height:4px;background:var(--color-border);border-radius:2px;outline:none;cursor:pointer;transition:background var(--transition)}.depth-range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid var(--color-surface);transition:transform var(--transition)}.depth-range::-webkit-slider-thumb:hover{transform:scale(1.2)}.depth-range::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid var(--color-surface)}.depth-range:disabled{opacity:.5;cursor:not-allowed}.depth-value{font-size:.8rem;font-weight:600;color:var(--color-primary);min-width:1.5rem;text-align:center;font-family:'Consolas',monospace}.engine-settings-body{display:flex;flex-direction:column;gap:.5rem}.setting-row{display:flex;align-items:center;gap:.5rem}.setting-row-header{justify-content:space-between}.setting-row-slider{display:flex;align-items:center;gap:.5rem}.setting-label{font-size:.78rem;color:var(--color-text-muted);display:flex;align-items:center;gap:.3rem;white-space:nowrap}.setting-hint{font-size:.7rem;color:var(--color-text-dim);white-space:nowrap}.setting-help-btn{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;border:1px solid var(--color-text-dim);border-radius:50%;background:#fff0;color:var(--color-text-dim);font-size:.6rem;font-weight:700;cursor:pointer;transition:all var(--transition);padding:0;line-height:1;flex-shrink:0}.setting-help-btn:hover{border-color:var(--color-primary);color:var(--color-primary);background:rgb(226 183 20 / .1)}.setting-select{width:100%;background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text);font-family:var(--font);font-size:.8rem;padding:.4rem .5rem;cursor:pointer;transition:border-color var(--transition)}.setting-select:hover,.setting-select:focus{border-color:var(--color-primary);outline:none}.setting-select:disabled{opacity:.5;cursor:not-allowed}.setting-select option{background:var(--color-surface);color:var(--color-text)}.setting-slider{-webkit-appearance:none;appearance:none;flex:1;height:4px;background:var(--color-border);border-radius:2px;outline:none;cursor:pointer;transition:background var(--transition)}.setting-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid var(--color-surface);transition:transform var(--transition)}.setting-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.setting-slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--color-primary);cursor:pointer;border:2px solid var(--color-surface)}.setting-slider:disabled{opacity:.5;cursor:not-allowed}@media (max-width:800px){.advice-accordion .advice-summary{display:none}.advice-accordion-body{padding:.6rem .75rem .75rem .75rem}.advice-accordion.is-advice-off{display:none}}.drawer-backdrop{position:fixed;inset:0;z-index:9000;background:rgb(0 0 0 / .5);opacity:0;transition:opacity 0.25s ease}.drawer-backdrop.is-open{opacity:1}.drawer{position:fixed;top:0;left:0;z-index:9001;display:flex;flex-direction:column;width:min(280px, 80vw);height:100%;background:var(--color-surface);border-right:1px solid var(--color-border);box-shadow:4px 0 24px rgb(0 0 0 / .35);transform:translateX(-100%);transition:transform 0.25s ease;overscroll-behavior:contain}.drawer.is-open{transform:translateX(0)}.drawer-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1rem .75rem;border-bottom:1px solid var(--color-border)}.drawer-title{font-size:1rem;font-weight:700;color:var(--color-text)}.drawer-close{border:none;background:none;color:var(--color-text-muted);font-size:1.6rem;line-height:1;cursor:pointer}.drawer-close:hover{color:var(--color-text)}.drawer-body{flex:0 1 auto;overflow-y:auto;padding:.5rem}.drawer-item{display:flex;align-items:center;gap:.6rem;width:100%;padding:.75rem .6rem;border:none;border-radius:8px;background:none;color:var(--color-text);font-size:.9rem;text-align:left;cursor:pointer}.drawer-item:hover{background:var(--color-bg)}.drawer-item-icon{flex:0 0 auto;width:1.4em;font-size:1.1rem;text-align:center}.drawer-advice-slot{flex:1 1 auto;min-height:0}.drawer-advice{display:flex;align-items:center;justify-content:space-between;gap:.5rem;padding:.75rem 1rem;border-top:1px solid var(--color-border)}.drawer-advice-label{display:flex;align-items:center;gap:.6rem;font-size:.9rem}.drawer-advice-icon{flex:0 0 auto;width:1.4em;font-size:1.1rem;text-align:center}.drawer-advice .btn-toggle{width:auto;min-width:3.5rem;padding:0 .7rem;font-size:.8rem}.drawer-lang{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex:0 0 auto;padding:.75rem 1rem;border-top:1px solid var(--color-border)}.drawer-lang-label{font-size:.85rem;color:var(--color-text-muted)}.drawer-copyright{flex:0 0 auto;margin:0;padding:0 1rem 1rem;font-size:.7rem;color:var(--color-text-dim);text-align:center}@media (min-width:801px){.drawer,.drawer-backdrop{display:none}}.upload-card-in-modal{border:none;background:none;box-shadow:none;padding:0;margin:0}.upload-card-in-modal>.card-header{display:none}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgb(0 0 0 / .6);z-index:9999;display:flex;align-items:center;justify-content:center;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;padding:2rem 0;box-sizing:border-box;animation:fadeIn 0.2s ease}.modal-content{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);max-width:480px;width:90%;margin:auto 0;box-shadow:0 8px 40px rgb(0 0 0 / .5);animation:fadeInUp 0.2s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid var(--color-border);font-weight:600;font-size:.95rem;color:var(--color-primary)}.modal-header-actions{display:inline-flex;align-items:center;gap:.5rem}.modal-close{background:none;border:none;color:var(--color-text-muted);font-size:1.4rem;cursor:pointer;padding:0 .25rem;line-height:1;transition:color var(--transition)}.modal-close:hover{color:var(--color-primary)}.modal-body{padding:1rem 1.25rem}.modal-body ul{list-style:none;padding:0;margin:0}.modal-body li{padding:.35rem 0;font-size:.85rem;color:var(--color-text);line-height:1.5;padding-left:1.2rem;position:relative}.modal-body li::before{content:'•';position:absolute;left:0;color:var(--color-primary);font-weight:700}.modal-body li strong{color:var(--color-text-muted);font-weight:600}.help-section{margin-bottom:.75rem}.help-section:last-child{margin-bottom:0}.help-section-title{font-size:.9rem;font-weight:600;color:var(--color-primary);margin-bottom:.4rem;display:flex;align-items:center;gap:.3rem}.help-section-desc{font-size:.82rem;color:var(--color-text);margin-bottom:.5rem;line-height:1.5}.help-section .help-list{list-style:none;padding:0;margin:0}.help-section .help-list li{padding:.25rem 0;font-size:.82rem;color:var(--color-text);line-height:1.5;padding-left:1.2rem;position:relative}.help-section .help-list li::before{content:'•';position:absolute;left:0;color:var(--color-primary);font-weight:700}.help-section .help-list li strong{color:var(--color-text-muted);font-weight:600}.help-supported{font-size:.78rem;color:var(--color-text-muted);margin-top:.3rem}.help-engine-timeout{font-size:.72rem;color:var(--color-warning)}.help-divider{border:none;border-top:1px solid var(--color-border);margin:.75rem 0}.btn-help{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border:1px solid var(--color-text-dim);border-radius:50%;background:#fff0;color:var(--color-text-dim);font-size:.75rem;font-weight:700;cursor:pointer;transition:all var(--transition);margin-left:auto;padding:0;line-height:1;flex-shrink:0}.btn-help:hover{border-color:var(--color-primary);color:var(--color-primary);background:rgb(226 183 20 / .1)}.btn-gear{border:none;border-radius:0;width:24px;height:24px;font-size:1.4rem}.btn-gear:hover{border-color:#fff0;background:#fff0}.btn-design-settings{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;margin-left:auto;padding:0;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);color:var(--color-text-muted);font-size:16px;cursor:pointer;transition:all var(--transition);flex-shrink:0}.btn-design-settings:hover{background:var(--color-surface-2);color:var(--color-text);border-color:var(--color-primary)}#designModal .modal-content{max-width:600px;width:90vw}#designModal .modal-body{padding:1.25rem}.design-section{margin-bottom:1.5rem}.design-section:last-child{margin-bottom:0}.design-section h4{margin:0 0 .75rem;font-size:.95rem;font-weight:600;color:var(--color-text)}.design-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.6rem}.design-btn{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:.6rem .4rem;border:2px solid var(--color-border);border-radius:8px;background:var(--color-surface);cursor:pointer;transition:all var(--transition);text-align:center}.design-btn:hover{border-color:var(--color-primary);background:var(--color-surface-2)}.design-btn.active{border-color:var(--color-primary);background:rgb(226 183 20 / .1);box-shadow:0 0 0 2px rgb(226 183 20 / .3)}.design-preview-pieces{display:flex;align-items:center;justify-content:center;gap:.25rem;height:48px}.design-preview-piece{width:36px;height:36px;object-fit:contain;image-rendering:auto}.design-preview-board{display:flex;align-items:center;justify-content:center;gap:0;height:48px;border-radius:4px;overflow:hidden;border:1px solid var(--color-border)}.design-preview-square{display:block;width:28px;height:28px;flex-shrink:0}.design-btn-label{font-size:.7rem;font-weight:500;color:var(--color-text-muted);line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.design-btn-ui-theme{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:.75rem .4rem .6rem;border:2px solid var(--color-border);border-radius:8px;background:var(--color-surface);cursor:pointer;transition:all var(--transition);text-align:center}.design-btn-ui-theme:hover{border-color:var(--color-primary);background:var(--color-surface-2)}.design-btn-ui-theme.active{border-color:var(--color-primary);background:rgb(226 183 20 / .1);box-shadow:0 0 0 2px rgb(226 183 20 / .3)}.design-ui-theme-icon{display:block;transition:transform var(--transition)}.design-btn-ui-theme:hover .design-ui-theme-icon{transform:scale(1.15)}.upload-card{text-align:center}.file-input-area{border:2px dashed var(--color-border);border-radius:var(--radius);padding:2.5rem 1.5rem;cursor:pointer;transition:all var(--transition);background:var(--color-surface-2);position:relative}.file-input-area:hover{border-color:var(--color-primary);background:rgb(226 183 20 / .05)}.file-input-area.dragover{border-color:var(--color-primary);background:rgb(226 183 20 / .08);transform:scale(1.01)}.result-card h2{font-size:1.25rem;color:var(--color-primary);margin-bottom:1.5rem;text-align:center}.result-content{display:flex;flex-direction:column;gap:1.25rem}.result-label{display:block;color:var(--color-text-muted);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.fen-string-wrapper{display:flex;align-items:center;gap:.75rem;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:.75rem 1rem}.fen-string{flex:1;font-family:'Consolas','Courier New',monospace;font-size:.95rem;color:var(--color-primary);word-break:break-all;user-select:all}.confidence-bar-wrapper{display:flex;align-items:center;gap:.75rem}.confidence-bar{flex:1;height:8px;background:var(--color-bg);border-radius:4px;overflow:hidden}.confidence-fill{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-primary-hover));border-radius:4px;transition:width 0.6s ease}.confidence-value{color:var(--color-primary);font-weight:700;font-size:.9rem;min-width:3rem;text-align:right}@media (max-width:800px){.piece-strip{--strip-height:38px}}@media (max-width:500px){.piece-strip{--strip-height:32px}}@media (max-width:800px){.side-indicator{--side-indicator-height:24px}}@media (max-width:500px){.side-indicator{--side-indicator-height:22px;font-size:.7rem}}@media (max-width:980px) and (min-width:801px){.board-action-bar .action-bar-btn .btn-text{display:none}.board-action-bar .action-bar-btn{gap:0;width:var(--action-bar-btn-width,50px);min-width:var(--action-bar-btn-min-width,34px);padding-left:0;padding-right:0}.board-action-bar .action-bar-btn svg{width:16px;height:16px}}@media (max-width:800px){.header .header-burger,.header .header-mode{display:inline-flex}.mode-card{display:none}.side-footer{display:none}#uploadCard:not(.upload-card-in-modal){display:none}.header h1{font-size:1.4rem;margin-bottom:0}.board-layout{flex-direction:column;align-items:center}.side-panel{max-width:100%;width:100%}.board-column{width:100%}.board-wrapper{width:100%;justify-content:center;align-items:center}.board-wrapper .board-area{width:auto}.toolbar-row{gap:.5rem}.piece-btn{width:28px;height:28px}.piece-icon{font-size:16px}.piece-icon-img{width:22px;height:22px}}@media (max-width:500px){.container{padding:0!important}.board-wrapper{padding:4px 4px 4px 10px!important;border-radius:0}.side-panel .card{border-radius:0}.board-layout{gap:1rem}.header{margin-bottom:.5rem;padding-left:.5rem;padding-right:.5rem}.header h1{font-size:1.1rem}.subtitle{font-size:.8rem}.toolbar{padding:.4rem .5rem}.hints-card{display:none}.board-action-bar{border-radius:0;padding:.35rem .4rem}}@media (max-width:670px){.board-action-bar .action-bar-btn .btn-text{display:none}.board-action-bar .action-bar-btn{gap:0;width:var(--action-bar-btn-width,50px);min-width:var(--action-bar-btn-min-width,34px);padding-left:0;padding-right:0}.board-action-bar .action-bar-btn svg{width:16px;height:16px}}@media (max-width:420px){.board-action-bar{--action-bar-btn-min-width:28px;gap:.2rem;padding:.35rem .3rem}}@media (max-width:480px){.design-grid{grid-template-columns:repeat(2,1fr)}#designModal .modal-content{max-width:95vw}}