:root{--bg: #0b1117;--panel: #111827;--text: #e5e7eb;--muted: #94a3b8;--brand: #7c3aed}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Arial,"Apple Color Emoji","Segoe UI Emoji";color:var(--text);background:linear-gradient(120deg,#0b1220,#0f172a)}.app{max-width:920px;margin:0 auto;padding:16px}.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0 24px}.nav .brand{text-decoration:none;color:var(--text);font-weight:700;letter-spacing:.2px}.nav nav{display:flex;gap:12px}.nav a{color:var(--muted);text-decoration:none;padding:6px 10px;border-radius:8px}.nav a.active{color:#fff;background:#7c3aed33}main{background:#11182799;border:1px solid rgba(148,163,184,.1);border-radius:16px;padding:24px}h1{margin-top:0}.card{display:grid;gap:12px;max-width:520px}label{display:grid;gap:6px;font-size:14px}input{padding:10px 12px;border-radius:10px;border:1px solid rgba(148,163,184,.2);background:#02061780;color:var(--text)}button{background:var(--brand);color:#fff;border:none;border-radius:10px;padding:10px 14px;font-weight:600;cursor:pointer}button:hover{filter:brightness(1.05)}