:root{
  --bg:#0f1220;--panel:#171b2e;--panel2:#1f2540;--line:#2a3152;
  --text:#e7e9f3;--muted:#9aa3c7;--brand:#6c8cff;--brand2:#5b7bff;
  --green:#36d399;--red:#f87272;--yellow:#fbbd23;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.nav{display:flex;align-items:center;gap:18px;background:var(--panel);border-bottom:1px solid var(--line);padding:12px 22px}
.nav .brand{font-weight:700;font-size:18px;color:#fff;margin-right:auto}
.nav a{color:var(--muted);font-size:14px}
.nav a.active,.nav a:hover{color:#fff}
.nav .bal{background:var(--panel2);border:1px solid var(--line);padding:6px 12px;border-radius:8px;color:var(--green);font-weight:600}
.container{max-width:1000px;margin:28px auto;padding:0 18px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:18px}
.card h2,.card h3{margin-top:0}
h1{font-size:24px}
.grid{display:grid;gap:16px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:720px){.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}}
label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
input,select,textarea{width:100%;background:var(--panel2);border:1px solid var(--line);color:var(--text);padding:10px 12px;border-radius:9px;font-size:14px}
textarea{min-height:120px;font-family:ui-monospace,Menlo,Consolas,monospace}
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;padding:10px 16px;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer}
.btn:hover{background:var(--brand2);text-decoration:none}
.btn.sm{padding:6px 10px;font-size:13px}
.btn.danger{background:var(--red)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em}
.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600}
.badge.active{background:rgba(108,140,255,.18);color:var(--brand)}
.badge.completed,.badge.available{background:rgba(54,211,153,.16);color:var(--green)}
.badge.expired,.badge.cancelled,.badge.used{background:rgba(248,114,114,.16);color:var(--red)}
.badge.assigned{background:rgba(251,189,35,.16);color:var(--yellow)}
.flash{padding:12px 16px;border-radius:10px;margin-bottom:14px;font-size:14px}
.flash.info{background:rgba(108,140,255,.15);border:1px solid var(--brand)}
.flash.success{background:rgba(54,211,153,.15);border:1px solid var(--green)}
.flash.error{background:rgba(248,114,114,.15);border:1px solid var(--red)}
.muted{color:var(--muted)}
.otp{font-size:22px;font-weight:700;letter-spacing:3px;color:var(--green);font-family:ui-monospace,monospace}
.timer{font-weight:700;color:var(--yellow)}
.auth-wrap{max-width:400px;margin:60px auto}
.center{text-align:center}
.right{text-align:right}
.inline{display:inline}
.stat{font-size:28px;font-weight:700}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.tabs a{background:var(--panel);border:1px solid var(--line);padding:8px 14px;border-radius:9px;color:var(--muted);font-size:14px}
.tabs a.active{color:#fff;border-color:var(--brand)}