:root{--bg:#fbf1c7;--bg-2:#f2e5bc;--text:#3c3836;--muted:#7c6f64;--accent:#b57614;--border:#d5c4a1;--surface:#f2e5bc;--surface-hover:#ebdbb2;--card-a:#d5c4a173;--card-b:#bdae9366;--danger:#cc241d;--radius:12px}:root[data-theme=dark]{--bg:#1d2021;--bg-2:#282828;--text:#ebdbb2;--muted:#bdae93;--accent:#d79921;--border:#3c3836;--surface:#282828;--surface-hover:#3c3836;--card-a:#3c38368c;--card-b:#50494573;--danger:#fb4934;color-scheme:dark}*{box-sizing:border-box;margin:0;padding:0}button,input,select,textarea{font-family:inherit}html{background-color:var(--bg)}body{text-rendering:optimizelegibility;background:linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);color:var(--text);min-height:100vh;font-family:Times New Roman,Times,Liberation Serif,serif;line-height:1.5}.file-warning{background:color-mix(in srgb, var(--danger) 15%, transparent);color:var(--danger);border-bottom:1px solid color-mix(in srgb, var(--danger) 30%, transparent);text-align:center;padding:1rem;font-size:.9rem;line-height:1.6}.file-warning code{background:var(--bg);border-radius:4px;padding:.15rem .35rem;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.container{max-width:900px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:2rem;position:relative}header h1{letter-spacing:-.01em;margin-bottom:.25rem;font-size:clamp(1.8rem,5vw,2.4rem);font-weight:700}header h1 img.logo-img{vertical-align:middle;border-radius:4px;width:auto;height:1.2em;margin-right:.3em}header p{color:var(--muted);font-size:clamp(1rem,2vw,1.15rem)}.theme-toggle{background:color-mix(in srgb, var(--border) 45%, transparent);color:var(--text);border:1px solid var(--border);letter-spacing:.02em;cursor:pointer;border-radius:999px;padding:.25rem .65rem;font-size:.85rem;transition:color .15s,background-color .15s,border-color .15s;position:absolute;top:0;right:0}.theme-toggle:hover,.theme-toggle:focus-visible{color:var(--accent);border-color:var(--accent);background:color-mix(in srgb, var(--border) 60%, transparent)}section{background:linear-gradient(135deg, var(--card-a), var(--card-b));border:1px solid var(--border);border-radius:var(--radius);margin-bottom:1.5rem;padding:1.5rem}section h2{margin-bottom:1rem;font-size:1.1rem;font-weight:600}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;color:var(--muted);cursor:pointer;padding:2.5rem;transition:border-color .15s,color .15s,background-color .15s}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent);color:var(--text);background:var(--surface-hover)}.drop-zone.has-file{border-style:solid;border-color:var(--accent);color:var(--accent);font-weight:600}.available-formats{flex-wrap:wrap;gap:.75rem;margin-bottom:1rem;display:flex}.format-toggle{background:var(--bg);border:1px solid var(--border);cursor:pointer;user-select:none;border-radius:999px;align-items:center;gap:.4rem;padding:.35rem .7rem;font-size:.9rem;transition:background-color .15s,border-color .15s;display:inline-flex}.format-toggle:hover{background:var(--surface-hover);border-color:var(--accent)}.format-toggle input{accent-color:var(--accent)}.chain-label{color:var(--muted);margin-bottom:.5rem;font-size:.85rem}.format-chain{flex-direction:column;gap:.75rem;display:flex}.chain-card{background:var(--bg);border:1px solid var(--border);border-radius:8px;overflow:hidden}.chain-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:.6rem .8rem;display:flex}.chain-name{font-weight:600}.chain-arrows{gap:.25rem;display:flex}.chain-arrows button{background:var(--surface);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:4px;padding:.2rem .4rem;font-size:.75rem;line-height:1;transition:background-color .15s,border-color .15s,color .15s}.chain-arrows button:disabled{opacity:.3;cursor:not-allowed}.chain-arrows button:not(:disabled):hover{background:var(--accent);border-color:var(--accent);color:var(--bg)}.chain-options{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.5rem;padding:.75rem;display:grid}.mini-slider,.mini-toggle,.mini-select{color:var(--muted);background:var(--surface);border-radius:6px;align-items:center;gap:.4rem;padding:.4rem .5rem;font-size:.8rem;display:flex}.mini-slider input[type=range]{min-width:60px;accent-color:var(--accent);flex:1}.mini-value{font-variant-numeric:tabular-nums;text-align:right;min-width:24px;color:var(--text)}.mini-toggle input{accent-color:var(--accent)}.mini-select select{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:4px;padding:.15rem .3rem;font-size:.8rem}.sliders-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-top:1.5rem;display:grid}.slider-group{flex-direction:column;gap:.35rem;display:flex}.slider-group label{color:var(--muted);font-size:.85rem}.slider-group input[type=range]{width:100%;accent-color:var(--accent)}.slider-group span{font-size:.9rem;font-weight:600}.calculation-summary{background:var(--bg);color:var(--muted);text-align:center;border-radius:6px;margin-top:1rem;padding:.75rem;font-size:.85rem}.start-btn{width:100%;color:var(--bg);background:var(--accent);cursor:pointer;border:none;border-radius:999px;margin-top:1.25rem;padding:.85rem;font-size:1rem;font-weight:700;transition:filter .15s,transform .15s;display:block}.start-btn:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-1px)}.start-btn:disabled{background:var(--border);color:var(--muted);cursor:not-allowed}.progress-area{text-align:center}.progress-bar-track{background:var(--bg);border-radius:5px;width:100%;height:10px;margin-bottom:.75rem;overflow:hidden}.progress-bar-fill{background:var(--accent);border-radius:5px;width:0%;height:100%;transition:width .3s}.progress-text{color:var(--muted);margin-bottom:1rem;font-size:.9rem}.preview-canvas{border-radius:var(--radius);border:1px solid var(--border);background:repeating-conic-gradient(var(--surface) 0% 25%, var(--surface-hover) 0% 50%) 50% / 20px 20px;max-width:100%;max-height:400px}.results-area{text-align:center}.download-buttons{flex-wrap:wrap;justify-content:center;gap:1rem;display:flex}.download-btn{color:var(--text);background:var(--bg);border:1px solid var(--border);cursor:pointer;border-radius:999px;padding:.75rem 1.25rem;font-size:.95rem;font-weight:600;transition:background-color .15s,border-color .15s,color .15s}.download-btn:hover{background:var(--surface-hover);border-color:var(--accent);color:var(--accent)}.hidden{display:none!important}