:root{--bg:#0f1724;--card:#0b1220;--muted:#94a3b8;--accent:#6ee7b7;--danger:#fb7185;--glass: rgba(255,255,255,.04);--radius:12px;--gap:14px;--card-padding:18px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}*{box-sizing:border-box}body{margin:0;background:#071226;color:#e6eef6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;padding:28px;font-size:15px}.app-shell{max-width:1100px;margin:0 auto}.header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.logo{width:56px;height:56px;background:linear-gradient(135deg,var(--accent),#60a5fa);border-radius:14px;display:flex;align-items:center;justify-content:center;color:#062023;font-weight:700;box-shadow:0 6px 18px #02061799}h1{margin:0;font-size:20px;letter-spacing:.2px}.lead{color:var(--muted);font-size:13px;margin-top:4px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--gap);margin-top:18px}.card{background:linear-gradient(180deg,#ffffff14,#ffffff0a);border-radius:var(--radius);padding:var(--card-padding);box-shadow:0 6px 24px #02061799;border:1px solid rgba(255,255,255,.03)}.card h2{margin:0 0 8px;font-size:24px;display:flex;align-items:center;gap:8px}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.controls{margin-top:12px;display:flex;flex-direction:column;gap:12px}.btn{padding:8px 12px;border-radius:10px;border:none;background:#54af8b;color:#000;cursor:pointer;font-weight:600;font-size:13px;transition:all .12s ease;display:inline-flex;align-items:center;gap:8px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--accent);border:1px solid rgba(110,231,183,.12)}.switch-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.switch-item{display:flex;align-items:center;justify-content:space-between;padding:8px;border-radius:8px;background:#ffffff03}.light-options{display:flex;gap:8px;align-items:center}.mode-pill{padding:6px 10px;border-radius:999px;font-weight:700;font-size:13px;background:#ffffff05;color:var(--muted)}.small{font-size:15px;color:var(--muted)}.footer-note{margin-top:18px;color:var(--muted);font-size:13px}.device-name{font-size:14px;font-weight:600;color:#d8eefe}