@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap";:root{--bg-base:#0b0c10;--bg-surface:#1a1c24a6;--bg-surface-solid:#1a1c24;--bg-surface-hover:#262935d9;--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-primary-glow:#6366f126;--color-secondary:#06b6d4;--color-secondary-hover:#0891b2;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--border-color:#ffffff14;--border-focus:#6366f180;--board-light:#ececd7;--board-dark:#739552;--board-highlight-from:#f7f76999;--board-highlight-to:#bade7399;--shadow-sm:0 2px 8px -2px #00000080;--shadow-lg:0 10px 30px -10px #000000b3;--shadow-glow:0 0 20px 0 #6366f140;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;background-image:radial-gradient(at 0 0,#6366f11a 0,#0000 50%),radial-gradient(at 100% 100%,#06b6d414 0,#0000 50%);min-height:100vh;font-family:Outfit,sans-serif;overflow-x:hidden}code,pre{font-family:JetBrains Mono,monospace}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-base)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-container{flex-direction:column;max-width:1400px;min-height:100vh;margin:0 auto;padding:1.5rem;display:flex}.header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;display:flex}.logo-container{align-items:center;gap:.75rem;display:flex}.logo-icon{color:var(--color-primary);filter:drop-shadow(0 0 8px var(--color-primary));font-size:2rem;animation:3s ease-in-out infinite float}.logo-text{letter-spacing:-.5px;background:linear-gradient(135deg, var(--text-primary), var(--text-secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:1.5rem;font-weight:700}.logo-badge{background:var(--color-primary-glow);border:1px solid var(--color-primary);color:var(--color-primary);border-radius:9999px;padding:.15rem .5rem;font-size:.75rem;font-weight:500}.main-content{flex:1;grid-template-columns:1fr;gap:2rem;display:grid}@media (width>=1024px){.main-content{grid-template-columns:1.2fr .8fr}}.glass-card{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);transition:border-color var(--transition-normal);border-radius:16px;padding:1.5rem}.glass-card:hover{border-color:#ffffff1f}.upload-zone{border:2px dashed var(--border-color);cursor:pointer;text-align:center;transition:all var(--transition-normal);background:#ffffff03;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;padding:4rem 2rem;display:flex}.upload-zone:hover,.upload-zone.drag-active{border-color:var(--color-primary);box-shadow:var(--shadow-glow);background:#6366f10a}.upload-icon{color:var(--text-secondary);transition:transform var(--transition-normal), color var(--transition-normal);margin-bottom:1.5rem;font-size:3rem}.upload-zone:hover .upload-icon{color:var(--color-primary);transform:translateY(-5px)}.upload-title{margin-bottom:.5rem;font-size:1.25rem;font-weight:600}.upload-desc{color:var(--text-secondary);margin-bottom:1.5rem;font-size:.875rem}.upload-btn{background:var(--color-primary);color:var(--text-primary);cursor:pointer;box-shadow:var(--shadow-sm);transition:all var(--transition-fast);border:none;border-radius:8px;padding:.75rem 1.5rem;font-family:inherit;font-weight:600}.upload-btn:hover{background:var(--color-primary-hover);transform:scale(1.02)}.workspace-grid{flex-direction:column;gap:1.5rem;display:flex}.board-container{width:100%;max-width:450px;margin:0 auto;position:relative}.chessboard-wrapper{aspect-ratio:1;width:100%;box-shadow:0 0 0 4px var(--bg-surface-solid), var(--shadow-lg);border-radius:8px;position:relative;overflow:hidden}.chessboard{grid-template-rows:repeat(8,1fr);grid-template-columns:repeat(8,1fr);width:100%;height:100%;display:grid}.square{cursor:pointer;-webkit-user-select:none;user-select:none;width:100%;height:100%;transition:filter var(--transition-fast);justify-content:center;align-items:center;display:flex;position:relative}.square:hover{filter:brightness(1.05)}.square.light{background-color:var(--board-light)}.square.dark{background-color:var(--board-dark)}.square.highlight-from{box-shadow:inset 0 0 0 4px var(--board-highlight-from);background-color:var(--board-highlight-from)}.square.highlight-to{box-shadow:inset 0 0 0 4px var(--board-highlight-to);background-color:var(--board-highlight-to)}.chess-piece{object-fit:contain;width:85%;height:85%;transition:transform var(--transition-fast);z-index:2}.square:hover .chess-piece{transform:scale(1.05)}.coord-label{z-index:1;pointer-events:none;font-size:.65rem;font-weight:700;position:absolute}.coord-label.rank{top:4px;left:4px}.coord-label.file{bottom:4px;right:4px}.square.light .coord-label{color:var(--board-dark)}.square.dark .coord-label{color:var(--board-light)}.piece-selector-overlay{z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0006;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0}.piece-selector-card{background:var(--bg-surface-solid);border:1px solid var(--border-color);box-shadow:var(--shadow-lg);width:90%;max-width:300px;animation:scaleIn var(--transition-fast);border-radius:12px;padding:1rem}.piece-selector-title{text-align:center;color:var(--text-secondary);margin-bottom:.75rem;font-size:.9rem;font-weight:600}.piece-grid{grid-template-columns:repeat(6,1fr);gap:.5rem;margin-bottom:1rem;display:grid}.selector-piece-btn{aspect-ratio:1;border:1px solid var(--border-color);cursor:pointer;transition:all var(--transition-fast);background:#ffffff08;border-radius:6px;justify-content:center;align-items:center;padding:.25rem;display:flex}.selector-piece-btn:hover{border-color:var(--color-primary);background:#ffffff14;transform:translateY(-2px)}.selector-piece-btn img{object-fit:contain;width:90%;height:90%}.empty-select-btn{color:#ef4444;cursor:pointer;width:100%;transition:all var(--transition-fast);text-align:center;background:#ef44441a;border:1px solid #ef444433;border-radius:6px;padding:.5rem;font-family:inherit;font-weight:600}.empty-select-btn:hover{background:#ef444433}.control-panel{flex-direction:column;gap:1.5rem;display:flex}.panel-section{border-bottom:1px solid var(--border-color);padding-bottom:1.25rem}.panel-section:last-child{border-bottom:none;padding-bottom:0}.section-title{text-transform:uppercase;letter-spacing:1px;color:var(--text-secondary);margin-bottom:1rem;font-size:.875rem;font-weight:700}.toggle-container{border:1px solid var(--border-color);background:#00000040;border-radius:8px;padding:.25rem;display:flex}.toggle-btn{cursor:pointer;transition:all var(--transition-fast);border:none;border-radius:6px;flex:1;justify-content:center;align-items:center;gap:.5rem;padding:.6rem;font-family:inherit;font-weight:600;display:flex}.toggle-btn.white{color:var(--text-primary);background:0 0}.toggle-btn.white.active{color:#0b0c10;box-shadow:var(--shadow-sm);background:#fff}.toggle-btn.black{color:var(--text-secondary);background:0 0}.toggle-btn.black.active{color:#fff;box-shadow:var(--shadow-sm);background:#1a1c24;border:1px solid #ffffff1a}.board-and-eval-container{align-items:stretch;gap:1rem;width:100%;max-width:480px;margin:0 auto;display:flex}.eval-bar-container{flex-direction:column;display:flex}.eval-bar-wrapper{border:1px solid var(--border-color);background:#1a1c24;border-radius:999px;flex:1;width:12px;position:relative;overflow:hidden}.board-wrapper{flex:1}.board-controls-container{width:100%;max-width:480px;margin:0 auto}.eval-bar-value{width:100%;transition:height var(--transition-normal) ease;background:#fff;position:absolute;bottom:0}.eval-score-text{color:var(--text-primary);font-family:JetBrains Mono,monospace;font-size:1.5rem;font-weight:700}.eval-stats{flex-direction:column;gap:.35rem;margin-top:.5rem;display:flex}.eval-stat-row{justify-content:space-between;font-size:.85rem;display:flex}.eval-stat-label{color:var(--text-secondary)}.eval-stat-val{font-family:JetBrains Mono,monospace;font-weight:600}.fen-box{gap:.5rem;margin-top:.5rem;display:flex}.fen-input{border:1px solid var(--border-color);color:var(--text-primary);transition:border-color var(--transition-fast);background:#00000040;border-radius:8px;outline:none;flex:1;padding:.6rem .75rem;font-family:JetBrains Mono,monospace;font-size:.8rem}.fen-input:focus{border-color:var(--color-primary)}.copy-btn{background:var(--bg-surface-solid);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);border-radius:8px;padding:.6rem 1rem}.copy-btn:hover{border-color:var(--text-muted);background:#ffffff0d}.action-btn{cursor:pointer;width:100%;transition:all var(--transition-fast);border:none;border-radius:8px;justify-content:center;align-items:center;gap:.5rem;padding:.75rem;font-family:inherit;font-weight:600;display:flex}.action-btn.primary{background:var(--color-primary);color:var(--text-primary)}.action-btn.primary:hover{background:var(--color-primary-hover);box-shadow:var(--shadow-glow)}.action-btn.secondary{color:#f87171;background:#ef444426;border:1px solid #ef444433}.action-btn.secondary:hover{background:#ef444440}@keyframes float{0%{transform:translateY(0)}50%{transform:translateY(-5px)}to{transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.spinner{border:3px solid #ffffff1a;border-top-color:var(--color-primary);border-radius:50%;width:24px;height:24px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.preview-card{border:1px solid var(--border-color);border-radius:12px;max-height:200px;position:relative;overflow:hidden}.preview-img{object-fit:cover;opacity:.75;width:100%;height:100%}.preview-overlay-info{width:100%;color:var(--text-secondary);background:linear-gradient(#0000,#000c);padding:.5rem 1rem;font-size:.8rem;position:absolute;bottom:0;left:0}.pv-moves-container{border:1px solid var(--border-color);background:#00000040;border-radius:8px;flex-wrap:wrap;gap:.35rem .6rem;max-height:120px;padding:.75rem;font-family:JetBrains Mono,monospace;font-size:.85rem;display:flex;overflow-y:auto}.pv-move-btn{color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:4px;padding:.15rem .35rem}.pv-move-btn:hover{background:var(--bg-surface-hover);color:var(--text-primary)}.pv-move-btn.active{background:var(--color-primary-glow);color:var(--color-secondary);box-shadow:inset 0 0 0 1px var(--color-primary);font-weight:600}.navigation-controls{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:8px;justify-content:center;align-items:center;gap:.75rem;margin-top:1rem;padding:.5rem;display:flex}.nav-btn{background:var(--bg-surface-solid);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);border-radius:4px;padding:.4rem .8rem;font-size:.9rem}.nav-btn:hover:not(:disabled){background:var(--bg-surface-hover);border-color:var(--color-primary)}.nav-btn:disabled{opacity:.4;cursor:not-allowed}.nav-status{color:var(--text-secondary);text-align:center;min-width:100px;font-size:.85rem;font-weight:500}.square.selected-piece{box-shadow:inset 0 0 0 4px var(--color-secondary)!important}.mode-toggle-container{border:1px solid var(--border-color);background:#00000059;border-radius:8px;gap:.25rem;padding:.25rem;display:flex}.mode-toggle-btn{color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-radius:6px;align-items:center;gap:.35rem;padding:.35rem .75rem;font-family:inherit;font-size:.8rem;font-weight:600;display:flex}.mode-toggle-btn:hover{color:var(--text-primary);background:#ffffff0a}.mode-toggle-btn.active{background:var(--color-primary);color:var(--text-primary);box-shadow:var(--shadow-sm), 0 0 10px #6366f14d}.pv-move-btn.played.active{background:var(--color-primary-glow)!important;color:#a5b4fc!important;box-shadow:inset 0 0 0 1px var(--color-primary)!important}.pv-move-btn.suggested{color:#67e8f9!important}.pv-move-btn.suggested:hover{color:#22d3ee!important;background:#06b6d41a!important}.desktop-only-lichess-link{display:block}.mobile-only-lichess-link{display:none}@media (width<=768px){.app-container{padding:.75rem}.header{margin-bottom:1.5rem;padding-bottom:.75rem}.logo-text{font-size:1.3rem}.logo-icon{font-size:1.8rem}.glass-card{border-radius:12px;padding:1rem}.workspace-grid{gap:.75rem}.eval-bar-wrapper{width:10px}.eval-score-text{font-size:1.25rem}.board-container{max-width:100%}.navigation-controls{gap:.4rem;margin-top:.75rem;padding:.4rem}.nav-btn{padding:.35rem .6rem;font-size:.8rem}.nav-status{min-width:80px;font-size:.8rem}.upload-zone{padding:2.5rem 1rem}.upload-title{font-size:1.1rem}.mode-toggle-btn{padding:.3rem .5rem;font-size:.75rem}.board-title,.desktop-only-lichess-link{display:none!important}.mobile-only-lichess-link{display:block!important}}@media (width<=480px){.header{justify-content:center;margin-bottom:.5rem;padding-bottom:.5rem}.logo-badge{display:none}.workspace-grid{gap:.5rem}.upload-zone{padding:2rem .5rem}}.upload-container-centered{flex:1;justify-content:center;align-items:center;min-height:70vh;padding:2rem 1rem;display:flex}.upload-card-centered{text-align:center;flex-direction:column;gap:2rem;width:100%;max-width:580px;padding:2.5rem;display:flex;position:relative;overflow:hidden}.centered-hero{flex-direction:column;align-items:center;gap:.75rem;display:flex}.logo-icon-large{color:var(--color-primary);filter:drop-shadow(0 0 12px var(--color-primary));margin-bottom:.5rem;font-size:3.5rem;animation:3s ease-in-out infinite float}.centered-hero h2{letter-spacing:-.5px;background:linear-gradient(135deg, var(--text-primary), var(--text-secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:2rem;font-weight:700}.centered-hero p{color:var(--text-secondary);max-width:420px;font-size:1rem;line-height:1.5}.upload-loading-overlay{flex-direction:column;justify-content:center;align-items:center;gap:1rem;padding:2rem;display:flex}.spinner-large{border:4px solid var(--border-color);border-top:4px solid var(--color-primary);border-radius:50%;width:48px;height:48px;animation:1s linear infinite spin}.back-btn{background:var(--bg-surface-solid);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);border-radius:8px;align-items:center;gap:.5rem;padding:.4rem .8rem;font-size:.9rem;font-weight:500;display:flex}.back-btn:hover{background:var(--bg-surface-hover);border-color:var(--border-focus);transform:translate(-2px)}