:root{--primary-color: #6366f1;--primary-hover: #4f46e5;--primary-light: #e0e7ff;--secondary-color: #10b981;--secondary-hover: #059669;--accent-color: #f59e0b;--error-color: #ef4444;--warning-color: #f59e0b;--success-color: #10b981;--surface-color: #ffffff;--surface-secondary: #f8fafc;--surface-tertiary: #f1f5f9;--background-color: #f8fafc;--background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--text-inverse: #ffffff;--border-color: #e2e8f0;--border-hover: #cbd5e1;--border-focus: #6366f1;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px}*{box-sizing:border-box}body{margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--background-color);color:var(--text-primary);line-height:1.6;font-feature-settings:"cv01","cv02","cv03","cv04";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{min-height:100vh;padding:1.5rem;max-width:1280px;margin:0 auto;background:var(--background-color)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border:none;border-radius:var(--radius-md);font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);gap:8px;font-family:inherit;letter-spacing:-.025em;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn:hover:before{left:100%}.btn-primary{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:var(--text-inverse);box-shadow:var(--shadow-md)}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-hover) 0%,#3730a3 100%);box-shadow:var(--shadow-lg);transform:translateY(-1px)}.btn-secondary{background:var(--surface-color);color:var(--text-primary);border:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background:var(--surface-secondary);border-color:var(--border-hover);box-shadow:var(--shadow-md);transform:translateY(-1px)}.card{background:var(--surface-color);border-radius:var(--radius-xl);padding:32px;box-shadow:var(--shadow-lg);margin-bottom:24px;border:1px solid var(--border-color);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--primary-color),transparent)}.error{color:var(--error-color);background:#ef44441a;padding:16px 20px;border-radius:var(--radius-lg);margin:12px 0;border:1px solid rgba(239,68,68,.2);font-weight:500}.success{color:var(--success-color);background:#10b9811a;padding:16px 20px;border-radius:var(--radius-lg);margin:12px 0;border:1px solid rgba(16,185,129,.2);font-weight:500}.loading{display:inline-block;width:20px;height:20px;border:2px solid rgba(99,102,241,.2);border-top:2px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:700;line-height:1.2;letter-spacing:-.025em;margin-bottom:.5em}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{color:var(--text-secondary);margin-bottom:1rem}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.animate-fade-in{animation:fadeIn .5s ease-out}.animate-slide-in{animation:slideIn .3s ease-out}.animate-scale-in{animation:scaleIn .2s ease-out}.glass{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.hover-lift{transition:all .2s cubic-bezier(.4,0,.2,1)}.hover-lift:hover{transform:translateY(-2px);box-shadow:var(--shadow-xl)}*:focus{outline:none}*:focus-visible{outline:2px solid var(--primary-color);outline-offset:2px;border-radius:var(--radius-sm)}@media (max-width: 768px){#app{padding:1rem}.card{padding:24px;margin:16px 0;border-radius:var(--radius-lg)}.btn{padding:12px 20px;font-size:14px}h1{font-size:2rem}h2{font-size:1.75rem}h3{font-size:1.25rem}h4{font-size:1.125rem}}.app-header.svelte-1vspto6.svelte-1vspto6{text-align:center;margin-bottom:3rem;position:relative}.hero-content.svelte-1vspto6.svelte-1vspto6{max-width:600px;margin:0 auto}.hero-title.svelte-1vspto6.svelte-1vspto6{margin:0 0 1rem;font-size:3rem;font-weight:800;background:linear-gradient(135deg,var(--primary-color) 0%,var(--accent-color) 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20px;border-radius:25px;font-size:.9rem;font-weight:600;background:var(--surface-color);color:var(--text-muted);transition:all .3s cubic-bezier(.4,0,.2,1);border:2px solid var(--border-color);position:relative;z-index:1;box-shadow:var(--shadow-sm)}.step.active.svelte-1vspto6.svelte-1vspto6{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:var(--text-inverse);border-color:var(--primary-color);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.step.completed.svelte-1vspto6.svelte-1vspto6{background:linear-gradient(135deg,var(--secondary-color) 0%,var(--secondary-hover) 100%);color:var(--text-inverse);border-color:var(--secondary-color);box-shadow:var(--shadow-md)}.drop-zone.svelte-1vspto6.svelte-1vspto6{border:2px dashed var(--border-color);border-radius:12px;padding:3rem 2rem;text-align:center;background:var(--surface-color);transition:all .3s ease;cursor:pointer}.drop-zone.svelte-1vspto6.svelte-1vspto6:hover,.drop-zone.drag-over.svelte-1vspto6.svelte-1vspto6{border-color:var(--primary-color);background:#f8f9ff}.upload-icon.svelte-1vspto6.svelte-1vspto6{font-size:3rem;margin-bottom:1rem}.recognition-mode.svelte-1vspto6.svelte-1vspto6{margin:1.5rem 0;padding:1rem;background:var(--surface-tertiary);border-radius:var(--radius-md);border:1px solid var(--border-color)}.recognition-mode.svelte-1vspto6 h4.svelte-1vspto6{margin:0 0 .75rem;font-size:1rem;text-align:center;color:var(--text-primary)}.mode-toggle.svelte-1vspto6.svelte-1vspto6{display:flex;gap:.5rem;justify-content:center;margin-bottom:.75rem}.mode-btn.svelte-1vspto6.svelte-1vspto6{flex:1;max-width:140px;padding:.6rem 1rem;border:2px solid var(--border-color);border-radius:var(--radius-md);background:var(--surface-color);color:var(--text-secondary);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease;text-align:center}.mode-btn.svelte-1vspto6.svelte-1vspto6:hover{border-color:var(--primary-color);background:var(--primary-light)}.mode-btn.active.svelte-1vspto6.svelte-1vspto6{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:var(--text-inverse);border-color:var(--primary-color);box-shadow:var(--shadow-md)}.mode-description.svelte-1vspto6.svelte-1vspto6{font-size:.85rem;color:var(--text-muted);text-align:center;margin:0;line-height:1.4}.upload-buttons.svelte-1vspto6.svelte-1vspto6{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.processing.svelte-1vspto6.svelte-1vspto6{text-align:center;padding:3rem 1rem}.analysis-grid.svelte-1vspto6.svelte-1vspto6{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:stretch;overflow-x:auto;min-height:100vh}.board-container.svelte-1vspto6.svelte-1vspto6{display:flex;flex-direction:column;align-items:center;margin:1rem 0;min-height:500px;overflow:visible;width:100%;padding:0 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svelte-1vspto6-borderGlow{0%{opacity:.5}to{opacity:.8}}.square.svelte-1vspto6.svelte-1vspto6{display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:0;aspect-ratio:1;position:relative;cursor:default;border:1px solid transparent;contain:layout style;transform:translateZ(0);box-sizing:border-box}.square.editable.svelte-1vspto6.svelte-1vspto6{cursor:pointer;transition:box-shadow .1s ease}.square.editable.svelte-1vspto6.svelte-1vspto6:hover{box-shadow:inset 0 0 0 2px var(--primary-color)}.square.selected.svelte-1vspto6.svelte-1vspto6{box-shadow:inset 0 0 0 3px #ff6b35}.square.highlight-source.svelte-1vspto6.svelte-1vspto6{box-shadow:inset 0 0 0 3px #ff9800;animation:svelte-1vspto6-pulse-source 1.2s ease-in-out infinite alternate}.square.highlight-destination.svelte-1vspto6.svelte-1vspto6{box-shadow:inset 0 0 0 3px #4caf50;animation:svelte-1vspto6-pulse-destination 1s ease-in-out infinite alternate}@keyframes svelte-1vspto6-pulse-source{0%{box-shadow:inset 0 0 0 3px #ff9800}to{box-shadow:inset 0 0 0 3px #ffb74d}}@keyframes svelte-1vspto6-pulse-destination{0%{box-shadow:inset 0 0 0 3px #4caf50}to{box-shadow:inset 0 0 0 3px #81c784}}.square.light.svelte-1vspto6.svelte-1vspto6{background:#f0d9b5}.square.dark.svelte-1vspto6.svelte-1vspto6{background:#b58863}.piece.svelte-1vspto6.svelte-1vspto6{font-size:1.8rem;font-weight:400;-webkit-user-select:none;user-select:none;pointer-events:none;drop-shadow:1px 1px 2px rgba(0,0,0,.3);transition:transform .1s ease}.modern-piece.svelte-1vspto6.svelte-1vspto6{font-size:3.4rem;text-shadow:1px 1px 2px rgba(0,0,0,.4);will-change:transform;backface-visibility:hidden;transform:translateZ(0)}.square.editable.svelte-1vspto6:hover .piece.svelte-1vspto6{transform:scale(1.05) translateZ(0)}.piece-button.svelte-1vspto6 .piece.svelte-1vspto6,.piece-button.svelte-1vspto6 .modern-piece.svelte-1vspto6{font-size:2rem;filter:drop-shadow(0 1px 2px rgba(0,0,0,.3)) drop-shadow(0 2px 4px rgba(0,0,0,.2)) drop-shadow(0 0px 0px 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0}.square-name.svelte-1vspto6.svelte-1vspto6{font-weight:600;min-width:30px}.evaluation.svelte-1vspto6.svelte-1vspto6{text-align:center;margin:1rem 0}.eval-score.svelte-1vspto6.svelte-1vspto6{font-size:2rem;font-weight:700;font-family:Courier New,monospace;color:var(--primary-color)}.win-prob.svelte-1vspto6.svelte-1vspto6{margin-top:.5rem;color:#666}.moves-list.svelte-1vspto6.svelte-1vspto6{display:flex;flex-direction:column;gap:.5rem}.move-item.svelte-1vspto6.svelte-1vspto6{display:grid;grid-template-columns:30px 1fr 80px 60px;gap:.5rem;align-items:center;padding:.5rem;background:#f8f9fa;border-radius:4px;cursor:pointer;transition:all .2s ease;border:2px solid transparent}.move-item.svelte-1vspto6.svelte-1vspto6:hover{background:#e3f2fd;transform:translateY(-1px)}.move-item.active.svelte-1vspto6.svelte-1vspto6{background:#c8e6c9;border:2px solid #4CAF50;box-shadow:0 2px 4px #4caf5033}.move-rank.svelte-1vspto6.svelte-1vspto6{font-weight:600;text-align:center}.move-notation.svelte-1vspto6.svelte-1vspto6{font-weight:600}.move-score.svelte-1vspto6.svelte-1vspto6{font-family:Courier New,monospace;font-size:.9rem}.action-buttons.svelte-1vspto6.svelte-1vspto6{display:flex;gap:1rem;justify-content:center;margin-top:2rem;flex-wrap:wrap}.tips.svelte-1vspto6 h4.svelte-1vspto6{margin:0 0 1rem}.tips.svelte-1vspto6 ul.svelte-1vspto6{margin:0;padding-left:1.5rem}.tips.svelte-1vspto6 li.svelte-1vspto6{margin-bottom:.5rem;color:#666}.position-header.svelte-1vspto6.svelte-1vspto6{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.position-header.svelte-1vspto6 h3.svelte-1vspto6{margin:0}.header-controls.svelte-1vspto6.svelte-1vspto6{display:flex;align-items:center;gap:.5rem}.btn-icon.svelte-1vspto6.svelte-1vspto6{width:32px;height:32px;border:1px solid #ddd;border-radius:6px;background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;font-size:16px;color:var(--text-color)}.btn-icon.svelte-1vspto6.svelte-1vspto6:hover:not(:disabled){border-color:var(--primary-color);background:#f8f9ff}.btn-icon.svelte-1vspto6.svelte-1vspto6:disabled{opacity:.4;cursor:not-allowed}.btn-edit.svelte-1vspto6.svelte-1vspto6{padding:6px 12px;font-size:.9rem;border-radius:6px;border:1px solid #ddd;background:#fff;cursor:pointer;transition:all .2s ease}.btn-edit.svelte-1vspto6.svelte-1vspto6:hover{border-color:var(--primary-color);background:#f8f9ff}.btn-edit.active.svelte-1vspto6.svelte-1vspto6{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.piece-palette.svelte-1vspto6.svelte-1vspto6{margin-top:1.5rem;padding:1rem;background:#f8f9fa;border-radius:8px}.piece-palette.svelte-1vspto6 h4.svelte-1vspto6{margin:0 0 1rem;font-size:1rem;color:#333}.piece-selector.svelte-1vspto6.svelte-1vspto6{display:flex;flex-direction:column;gap:.75rem}.piece-row.svelte-1vspto6.svelte-1vspto6{display:flex;align-items:center;gap:.5rem}.piece-row.svelte-1vspto6 span.svelte-1vspto6{font-weight:600;min-width:60px;font-size:.9rem}.piece-button.svelte-1vspto6.svelte-1vspto6{width:40px;height:40px;border:2px solid #ddd;border-radius:6px;background:#fff;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;font-size:1.5rem}.piece-button.svelte-1vspto6.svelte-1vspto6:hover{border-color:var(--primary-color);box-shadow:0 2px 8px #3b82f64d}.piece-button.selected.svelte-1vspto6.svelte-1vspto6{border-color:var(--primary-color);background:#f0f9ff;box-shadow:0 0 0 2px #3b82f633}.edit-controls.svelte-1vspto6.svelte-1vspto6{margin-top:1rem;display:flex;flex-direction:column;gap:.5rem;align-items:center}.edit-instructions.svelte-1vspto6.svelte-1vspto6{text-align:center;color:#666}@media (max-width: 768px){.hero-title.svelte-1vspto6.svelte-1vspto6{font-size:2.5rem}.hero-subtitle.svelte-1vspto6.svelte-1vspto6{font-size:1.1rem}.hero-badges.svelte-1vspto6.svelte-1vspto6{gap:.5rem}.badge.svelte-1vspto6.svelte-1vspto6{font-size:.8rem;padding:4px 12px}.step-indicator.svelte-1vspto6.svelte-1vspto6{gap:1rem;margin-bottom:2rem}.step.svelte-1vspto6.svelte-1vspto6{padding:10px 16px;font-size:.85rem}.analysis-grid.svelte-1vspto6.svelte-1vspto6{grid-template-columns:1fr;gap:1rem;overflow-x:visible}.board-container.svelte-1vspto6.svelte-1vspto6{padding:0 .5rem;min-height:350px}.chess-board.svelte-1vspto6.svelte-1vspto6{width:90%;height:auto;aspect-ratio:1;max-width:calc(90vw - 1rem);min-width:250px;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr))}.square.svelte-1vspto6.svelte-1vspto6{min-width:0;min-height:0}.modern-piece.svelte-1vspto6.svelte-1vspto6{font-size:2.5rem}.piece-button.svelte-1vspto6 .piece.svelte-1vspto6,.piece-button.svelte-1vspto6 .modern-piece.svelte-1vspto6{font-size:1.6rem}.action-buttons.svelte-1vspto6.svelte-1vspto6{flex-direction:column;align-items:center}.drop-zone.svelte-1vspto6.svelte-1vspto6{padding:2rem 1rem}.move-item.svelte-1vspto6.svelte-1vspto6{grid-template-columns:1fr;text-align:center;gap:.25rem}.position-header.svelte-1vspto6.svelte-1vspto6{flex-direction:column;gap:.5rem;align-items:flex-start}.piece-row.svelte-1vspto6.svelte-1vspto6{flex-wrap:wrap}.piece-button.svelte-1vspto6.svelte-1vspto6{width:35px;height:35px;font-size:1.3rem}.board-container.svelte-1vspto6.svelte-1vspto6{min-height:320px;overflow:visible}}@media (max-width: 380px){.board-container.svelte-1vspto6.svelte-1vspto6{padding:0 .25rem;margin:.5rem 0}.chess-board.svelte-1vspto6.svelte-1vspto6{width:85%;max-width:calc(85vw - .5rem);min-width:200px;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr))}.modern-piece.svelte-1vspto6.svelte-1vspto6{font-size:2rem}.square-label.svelte-1vspto6.svelte-1vspto6{font-size:.5rem}}@media (max-width: 320px){.chess-board.svelte-1vspto6.svelte-1vspto6{width:80%;max-width:calc(80vw - .3rem);min-width:180px;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr))}.modern-piece.svelte-1vspto6.svelte-1vspto6{font-size:1.6rem}}.warning-banner.svelte-1vspto6.svelte-1vspto6{position:sticky;top:0;z-index:100;background:linear-gradient(135deg,#ff9500,#ff8c00);border-left:4px solid #ff6b00;box-shadow:0 2px 8px #ff95004d;margin-bottom:1rem}.warning-content.svelte-1vspto6.svelte-1vspto6{padding:1rem 1.5rem;color:#fff;font-weight:600;text-align:center;border-radius:0 8px 8px 0}.toast.svelte-1vspto6.svelte-1vspto6{position:fixed;top:20px;right:20px;background:linear-gradient(135deg,#ff6b6b,#ee5a52);color:#fff;padding:12px 20px;border-radius:8px;box-shadow:0 4px 12px #0000004d,0 2px 4px #0003;font-weight:500;font-size:.9rem;max-width:300px;word-wrap:break-word;transform:translate(100%);transition:transform .3s ease;z-index:1000;border-left:4px solid #ffffff}.toast.show.svelte-1vspto6.svelte-1vspto6{transform:translate(0)}@media (max-width: 768px){.toast.svelte-1vspto6.svelte-1vspto6{top:10px;right:10px;left:10px;max-width:none;transform:translateY(-100%)}.toast.show.svelte-1vspto6.svelte-1vspto6{transform:translateY(0)}}.image-container.svelte-1vspto6.svelte-1vspto6{display:flex;justify-content:center;align-items:center;margin:1rem 0;min-height:400px}.original-image.svelte-1vspto6.svelte-1vspto6{max-width:100%;max-height:500px;width:auto;height:auto;border-radius:12px;box-shadow:0 2px 8px #0000001a;object-fit:contain;transition:transform .3s ease}.original-image.flipped.svelte-1vspto6.svelte-1vspto6{transform:scaleY(-1)}.image-header.svelte-1vspto6.svelte-1vspto6{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.image-header.svelte-1vspto6 h3.svelte-1vspto6{margin:0}.flip-btn.svelte-1vspto6.svelte-1vspto6{background:var(--primary-color);color:#fff;border:none;padding:.5rem;border-radius:8px;cursor:pointer;font-size:1.2rem;transition:all .2s ease;box-shadow:0 2px 4px #0000001a}.flip-btn.svelte-1vspto6.svelte-1vspto6:hover{background:var(--primary-hover);transform:scale(1.05);box-shadow:0 4px 8px #00000026}@media (max-width: 768px){.original-image.svelte-1vspto6.svelte-1vspto6{max-height:300px}.image-container.svelte-1vspto6.svelte-1vspto6{min-height:250px}}