:root{--bg: #12131a;--panel: #1c1e28;--border: #2a2d3a;--text: #eef0f6;--muted: #9aa0b0;--accent: #c084fc;--danger: #f87171;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,.btn{font:inherit;padding:.75rem 1rem;border-radius:.5rem;border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;min-height:44px}button:hover,.btn:hover{border-color:var(--accent)}button.primary{background:var(--accent);color:#0b0b12;border-color:var(--accent);font-weight:600}button.danger{border-color:var(--danger);color:var(--danger)}input,textarea,select{font:inherit;padding:.75rem;border-radius:.5rem;border:1px solid var(--border);background:var(--panel);color:var(--text);width:100%;min-height:44px}textarea{min-height:120px;resize:vertical}label{display:block;font-size:.9rem;color:var(--muted);margin-bottom:.25rem}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;padding:1rem;border-bottom:1px solid var(--border);background:var(--panel);position:sticky;top:0;z-index:10}.app-header h1{font-size:1.1rem;margin:0}.app-header nav{display:flex;gap:1rem}.container{padding:1rem;max-width:780px;width:100%;margin:0 auto}.card{background:var(--panel);border:1px solid var(--border);border-radius:.75rem;padding:1rem;margin-bottom:.75rem}.card h3{margin:0 0 .25rem}.card p{margin:0;color:var(--muted);font-size:.9rem}.list{display:flex;flex-direction:column;gap:.5rem}.stack{display:flex;flex-direction:column;gap:1rem}.row{display:flex;gap:.5rem;align-items:center}.muted{color:var(--muted)}.error{color:var(--danger);font-size:.9rem}@media (min-width: 640px){.container{padding:1.5rem}}