:root {
  --bg: #0b1020;
  --panel: #121a31;
  --panel-2: #182240;
  --text: #e8eefc;
  --muted: #9fb0d3;
  --primary: #4f8cff;
  --primary-2: #3a73dd;
  --danger: #ff6b7a;
  --success: #3ecf8e;
  --border: rgba(255,255,255,.08);
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius: 14px;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at top, #152044, var(--bg)); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
code { background: rgba(255,255,255,.06); padding: .1rem .35rem; border-radius: 6px; }
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.card { background: linear-gradient(180deg, var(--panel), var(--panel-2)); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.5rem; }
.auth-card { width: min(520px, 100%); }
.app-shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar { background: rgba(0,0,0,.25); border-right: 1px solid var(--border); padding: 1rem; display: flex; flex-direction: column; gap: 1rem; }
.brand { font-weight: 700; font-size: 1.1rem; letter-spacing: .02em; }
.sidebar nav { display: grid; gap: .35rem; }
.sidebar nav a { padding: .65rem .8rem; border-radius: 10px; color: var(--text); }
.sidebar nav a:hover { background: rgba(255,255,255,.06); }
.sidebar-foot { margin-top: auto; display: grid; gap: .35rem; font-size: .92rem; }
.content { padding: 1.25rem 1.5rem 2rem; }
.content-head h1 { margin: 0 0 1rem; font-size: 1.5rem; }
.muted { color: var(--muted); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1rem; }
.stat { padding: 1rem; border-radius: var(--radius); border: 1px solid var(--border); background: rgba(255,255,255,.03); }
.stat strong { display: block; font-size: 1.6rem; margin-top: .35rem; }
.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: .75rem .85rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
tr:hover td { background: rgba(255,255,255,.02); }
.form-grid { display: grid; gap: .85rem; }
label { display: grid; gap: .35rem; font-size: .92rem; color: var(--muted); }
input, select, textarea {
  width: 100%; border: 1px solid var(--border); background: rgba(0,0,0,.25); color: var(--text);
  border-radius: 10px; padding: .65rem .75rem;
}
textarea { min-height: 90px; resize: vertical; }
.btn { border: 0; border-radius: 10px; padding: .65rem 1rem; cursor: pointer; font-weight: 600; }
.btn-primary { background: linear-gradient(180deg, var(--primary), var(--primary-2)); color: white; }
.btn-danger { background: rgba(255,107,122,.15); color: #ffd7dc; border: 1px solid rgba(255,107,122,.35); }
.btn-small { padding: .35rem .6rem; font-size: .85rem; }
.alert { padding: .75rem .85rem; border-radius: 10px; margin-bottom: 1rem; }
.alert-error { background: rgba(255,107,122,.12); border: 1px solid rgba(255,107,122,.35); }
.alert-success { background: rgba(62,207,142,.12); border: 1px solid rgba(62,207,142,.35); }
.badge { display: inline-block; padding: .15rem .45rem; border-radius: 999px; font-size: .78rem; }
.badge-ok { background: rgba(62,207,142,.15); color: #b8f5d6; }
.badge-off { background: rgba(255,107,122,.15); color: #ffd7dc; }
.actions { display: flex; gap: .4rem; flex-wrap: wrap; }
@media (max-width: 960px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 2; }
  .grid-3 { grid-template-columns: 1fr; }
}