:root{--bg: #0f1115;--panel: #181b22;--panel-2: #20242d;--border: #2a2f3a;--text: #e7ebf0;--muted: #9aa4b2;--accent: #6c8ebf;--accent-2: #82b366;--danger: #d9534f}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--panel-2);color:var(--text);padding:8px 14px;border-radius:8px;transition:background .15s ease}button:hover:not(:disabled){background:#2a3038}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent);border-color:var(--accent);color:#0b1020;font-weight:600}button.primary:hover:not(:disabled){background:#7c9ed0}input,textarea,select{font:inherit;width:100%;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:10px 12px}textarea{resize:vertical;min-height:220px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 22px;border-bottom:1px solid var(--border);background:var(--panel)}.brand{font-weight:700;font-size:18px;letter-spacing:.3px}.brand .dot{color:var(--accent-2)}.container{max-width:1100px;margin:0 auto;padding:28px 22px}.wide{max-width:1400px}.row{display:flex;gap:12px;align-items:center}.spread{justify-content:space-between}.muted{color:var(--muted)}.pill{font-size:12px;padding:3px 9px;border-radius:999px;border:1px solid var(--border);background:var(--panel-2);color:var(--muted)}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.viz-card{cursor:pointer;transition:border-color .15s ease}.viz-card:hover{border-color:var(--accent)}.preset-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}.preset{border:1px solid var(--border);border-radius:10px;padding:12px;background:var(--panel);text-align:left}.preset.selected{border-color:var(--accent);background:var(--panel-2)}.preset b{display:block;margin-bottom:4px}.preset small{color:var(--muted)}.banner{border-radius:8px;padding:10px 14px;margin-bottom:14px;font-size:14px}.banner.error{background:#d9534f1f;border:1px solid var(--danger)}.banner.info{background:#6c8ebf1f;border:1px solid var(--accent)}.viewer-frame{width:100%;height:72vh;border:1px solid var(--border);border-radius:12px;background:#fff}.center{min-height:70vh;display:grid;place-items:center}.stack{display:flex;flex-direction:column;gap:14px}.spinner{width:18px;height:18px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}