:root{--bg:#0b0c10;--panel:#111217;--muted:#1a1c23;--text:#e6e6e6;--sub:#a9b0bc;
--brand:#4cc2ff;--accent:#a06bff;--ok:#51d48a;--warn:#ffcc66;--err:#ff6b6b;--border:#2a2d36;--radius:14px;--shadow:0 10px 30px rgba(0,0,0,.35)}
*{box-sizing:border-box} html,body{height:100%}
body{margin:0;background:linear-gradient(180deg,var(--bg),#0f1117 40%, #0b0c10);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Arial;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
.container{max-width:980px;margin:48px auto;padding:0 20px}
.nav{display:flex;align-items:center;gap:12px;padding:14px 18px;margin:24px auto 10px;max-width:980px;background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:16px;backdrop-filter: blur(6px)}
.nav a,.nav button{color:var(--text);text-decoration:none;font-weight:600;padding:10px 14px;border-radius:10px;border:1px solid transparent;background:transparent;cursor:pointer}
.nav a:hover{background:var(--muted)} .nav .spacer{flex:1}
.card{background:linear-gradient(180deg,var(--panel),#0f1117);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin:18px 0}
h1,h2,h3{margin:0 0 12px} h1{font-size:28px} h2{font-size:22px;color:var(--brand)} h3{font-size:18px;color:var(--sub)}
label{display:block;margin:10px 0 6px;color:var(--sub)}
input,select,textarea{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:#0c0e14;color:var(--text);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(76,194,255,.15)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 16px;border-radius:12px;border:1px solid var(--border);background:var(--muted);color:var(--text);cursor:pointer}
.btn.primary{background:linear-gradient(180deg,var(--brand),#3aa7e0);color:#00131d;border-color:transparent}
.btn.ghost{background:transparent} .btn:disabled{opacity:.6;cursor:not-allowed}
.grid{display:grid;grid-template-columns:1fr;gap:18px} @media (min-width:800px){.grid{grid-template-columns:1.1fr .9fr}}
.flash{background:rgba(81,212,138,.1);border:1px solid rgba(81,212,138,.35);color:#b8f5d6;padding:12px 16px;border-radius:12px;margin:12px 0}
.flash.error{background:rgba(255,107,107,.08);border-color:rgba(255,107,107,.35);color:#ffb5b5}
.qr{max-width:256px;height:auto;border:1px solid var(--border);border-radius:10px;background:#0c0e14;padding:6px}
table{width:100%;border-collapse:separate;border-spacing:0;background:var(--panel);border:1px solid var(--border);border-radius:14px;overflow:hidden}
th,td{padding:12px 14px;border-bottom:1px solid var(--border)} th{text-align:left;font-weight:600;color:var(--sub);background:rgba(255,255,255,.02)}
tr:last-child td{border-bottom:0} tr:hover td{background:rgba(255,255,255,.015)} .small{color:var(--sub);font-size:.9rem}