:root{--bg:#0b132b;--card:#1c2541;--accent:#5bc0be;--text:#f5f6fa}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--text)}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#162447}
a{color:var(--accent);text-decoration:none;margin-right:12px}
.card{max-width:880px;margin:32px auto;background:var(--card);padding:24px;border-radius:10px}
label{display:block;margin-top:10px}
input,textarea,select{width:100%;padding:10px;margin-top:6px;border-radius:6px;border:1px solid #2d3561;background:#0f1a3a;color:var(--text)}
button{margin-top:14px;padding:10px 16px;border:none;border-radius:8px;background:var(--accent);color:#03131a;cursor:pointer}
table{width:100%;border-collapse:collapse;margin-top:14px}
th,td{padding:8px;border-bottom:1px solid #2b3a67}
.err{background:#ff4757;color:#fff;padding:8px;border-radius:6px}