:root{--bg: #0b1822;--card: #0f2230;--border: #0b2a3a;--accent: #18ffff;--accentText: #00323a;--good: #00e676;--warn: #ffeb3b;--pink: #ff4f8a;--text: #ffffff;--subtext: #9ad3ff}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*:focus{outline:2px solid var(--accent);outline-offset:2px}.topnav{position:sticky;top:0;z-index:100;background:#0f2230;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:10px 16px}.topnav .brand{color:var(--warn);font-weight:900;text-decoration:none}.topnav .links a{color:var(--subtext);text-decoration:none;margin-right:12px}.topnav .links a:hover{color:var(--accent)}.app-shell .content{padding:16px}@media (max-width: 640px){.topnav{flex-direction:column;align-items:flex-start;gap:8px}.topnav .links a{margin-right:10px;display:inline-block}}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px}.center{display:flex;align-items:center;justify-content:center;height:100vh}.banner{position:fixed;top:0;left:0;right:0;background:#333;color:#fff;text-align:center;padding:8px}.btn-primary{background:var(--pink);color:var(--text);border:0;border-radius:24px;padding:10px 16px;font-weight:800;cursor:pointer}.btn-accent{background:var(--accent);color:var(--accentText);border:0;border-radius:18px;padding:8px 12px;font-weight:800;cursor:pointer}.input{width:100%;padding:12px;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--text);box-sizing:border-box}.input::placeholder{color:var(--subtext);opacity:1}