:root{--bg:#101216;--bg-panel:#181b21;--bg-card:#1e222a;--bg-input:#262b34;--border:#2d333e;--text:#e8eaee;--text-dim:#9aa1ad;--accent:#d4af37;--accent-text:#16130a;--error:#e5636e;--warn:#e0b45c;--radius:10px;font-size:15px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}.app{grid-template:"topbar topbar topbar"52px"sidebar viewport infobar"1fr/330px 1fr 300px;height:100%;display:grid}.topbar{border-bottom:1px solid var(--border);background:var(--bg-panel);grid-area:topbar;justify-content:space-between;align-items:center;padding:0 18px;display:flex}.brand{letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-size:14px;font-weight:700}.lang-toggle{background:var(--bg-input);color:var(--text);border:1px solid var(--border);cursor:pointer;border-radius:6px;padding:4px 10px;font-size:12px}.sidebar,.infobar{background:var(--bg-panel);padding:14px;overflow-y:auto}.sidebar{border-right:1px solid var(--border);grid-area:sidebar}.infobar{border-left:1px solid var(--border);flex-direction:column;grid-area:infobar;gap:12px;display:flex}h2{text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim);margin:6px 0 10px;font-size:12px}h3{text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim);margin:14px 0 6px;font-size:11px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px}.muted{color:var(--text-dim)}.small{font-size:12px}.error{color:var(--error)}.template-picker{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}.template-chip{background:var(--bg-card);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;text-align:left;flex-direction:column;align-items:flex-start;gap:2px;padding:9px 12px;display:flex}.template-chip.active{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 10%, var(--bg-card))}.template-title{font-size:14px;font-weight:600}.template-cat{color:var(--text-dim);font-size:11px}.param-form section{margin-bottom:6px}.field{margin-bottom:12px;display:block}.field-label{color:var(--text);justify-content:space-between;margin-bottom:5px;font-size:13px;display:flex}.field-value{color:var(--text-dim);font-variant-numeric:tabular-nums}.field-row{align-items:center;gap:8px;display:flex}input[type=range]{accent-color:var(--accent);flex:1}input[type=number]{background:var(--bg-input);width:68px;color:var(--text);border:1px solid var(--border);border-radius:6px;padding:4px 6px;font-size:13px}select{background:var(--bg-input);width:100%;color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px}.segmented{flex-wrap:wrap;gap:4px;display:flex}.segmented button{background:var(--bg-input);min-width:60px;color:var(--text-dim);border:1px solid var(--border);cursor:pointer;border-radius:6px;flex:1;padding:6px 8px;font-size:12px}.segmented button.active{background:color-mix(in srgb, var(--accent) 18%, var(--bg-input));color:var(--text);border-color:var(--accent)}.field-toggle{justify-content:space-between;align-items:center;display:flex}.viewport{background:radial-gradient(1200px 600px at 50% 20%, #232833 0%, var(--bg) 70%);grid-area:viewport;position:relative}.viewport canvas{position:absolute;inset:0}.spinner{color:var(--text-dim);border:1px solid var(--border);pointer-events:none;background:#14171ccc;border-radius:999px;align-items:center;gap:8px;padding:6px 12px;font-size:12px;display:flex;position:absolute;top:14px;left:14px}.spinner .dot{background:var(--accent);border-radius:50%;width:8px;height:8px;animation:.9s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:.25;transform:scale(.8)}50%{opacity:1;transform:scale(1.1)}}.toast{border-radius:var(--radius);background:var(--bg-card);border:1px solid var(--error);align-items:center;gap:10px;max-width:min(90%,560px);padding:10px 14px;font-size:13px;display:flex;position:absolute;bottom:18px;left:50%;transform:translate(-50%)}.toast-detail{color:var(--text-dim);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.toast button{background:var(--error);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:5px 10px}.alloy-row{flex-wrap:wrap;gap:6px;display:flex}.swatch{cursor:pointer;border:2px solid #0000;border-radius:50%;width:22px;height:22px}.swatch.active{border-color:var(--text)}.alloy-name{color:var(--text-dim);margin:6px 0 4px;font-size:12px}dl{margin:8px 0}dl div{justify-content:space-between;padding:3px 0;display:flex}dt{color:var(--text-dim);font-size:13px}dd{font-variant-numeric:tabular-nums;margin:0;font-size:13px}dd.weight{color:var(--accent);font-size:16px;font-weight:700}.overhead{color:var(--text-dim);margin:8px 0;font-size:12px;display:block}.overhead input{width:100%}.gem-list{margin:0;padding:0;list-style:none}.gem-list li{justify-content:space-between;padding:3px 0;font-size:13px;display:flex}.warnings{margin:0;padding:0;list-style:none}.warnings li{color:var(--warn);padding:3px 0 3px 14px;font-size:12px;position:relative}.warnings li:before{content:"⚠";position:absolute;left:0}.format-row{flex-wrap:wrap;gap:4px 12px;margin-bottom:10px;display:flex}.format-check{align-items:center;gap:6px;font-size:13px;display:flex}button.primary{background:var(--accent);width:100%;color:var(--accent-text);cursor:pointer;border:none;border-radius:8px;padding:10px;font-weight:700}button.primary:disabled{opacity:.55;cursor:default}@media (width<=900px){.app{grid-template:"topbar"48px"viewport"46vh"infobar""sidebar"/1fr;height:auto;min-height:100%}.sidebar,.infobar{border:none;border-top:1px solid var(--border);overflow:visible}.viewport{min-height:46vh}}