:root{color-scheme:dark;font-family:Inter,system-ui}*{box-sizing:border-box}body{margin:0;background:#080b10;color:#e9eef8}.shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}aside{padding:24px;border-right:1px solid #263043;background:#0d121b}aside b{color:#70d6ff;font-size:21px}nav button{display:block;width:100%;margin:12px 0;background:#151d2a;text-align:left}main{padding:28px;max-width:1100px}.top{display:flex;justify-content:space-between;align-items:center}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:#111824;border:1px solid #263043;border-radius:14px;padding:18px}input,textarea,button,select{width:100%;padding:11px;margin:6px 0;border-radius:8px;border:1px solid #35445d;background:#0d1420;color:#eef}button{background:#2563eb;border:0;font-weight:600;cursor:pointer}.muted{color:#92a1b8}.hidden{display:none}pre{white-space:pre-wrap}.span-two{grid-column:span 2}.error{color:#ff8a8a}@media(max-width:760px){.shell{display:block}aside{border-right:0}.grid{grid-template-columns:1fr}main{padding:16px}}