:root {
  --bg: #070b12;
  --bg-2: #0e1624;
  --card: #121c2d;
  --line: rgba(255,255,255,.08);
  --text: #e8eef9;
  --muted: #8ea0b8;
  --accent: #3ee0b4;
  --accent-2: #6ea8ff;
  --danger: #ff6b7a;
  --warn: #ffc857;
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --radius: 18px;
  font-family: "Vazirmatn", "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: radial-gradient(1200px 600px at 10% -10%, #16324d 0%, var(--bg) 45%); color: var(--text); min-height: 100%; }
a { color: var(--accent-2); text-decoration: none; }
.shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.side { padding: 28px 20px; border-left: 1px solid var(--line); background: rgba(8,12,20,.72); backdrop-filter: blur(16px); }
.brand { font-weight: 800; font-size: 22px; letter-spacing: -.03em; }
.brand span { color: var(--accent); }
.nav { display: flex; flex-direction: column; gap: 8px; margin-top: 32px; }
.nav a { padding: 12px 14px; border-radius: 12px; color: var(--text); }
.nav a:hover, .nav a.active { background: #1a2940; }
.main { padding: 28px 32px 48px; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 24px; }
.muted { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.card { background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01)); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.stat { font-size: 28px; font-weight: 800; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--line); text-align: right; font-size: 14px; }
.btn { border: 0; border-radius: 12px; padding: 10px 14px; cursor: pointer; font-weight: 700; font-family: inherit; }
.btn-primary { background: var(--accent); color: #04251c; }
.btn-ghost { background: #1a2940; color: var(--text); }
.btn-danger { background: var(--danger); color: white; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
input, select { background: #0b1320; border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 10px 12px; font-family: inherit; }
.badge { padding: 4px 8px; border-radius: 999px; font-size: 12px; }
.on { background: rgba(62,224,180,.15); color: var(--accent); }
.off { background: rgba(255,107,122,.12); color: var(--danger); }
.login-wrap { min-height: 100vh; display: grid; place-items: center; }
.login-card { width: min(420px, 92vw); }
.flash { background: rgba(255,107,122,.12); color: var(--danger); padding: 10px 12px; border-radius: 10px; }
.log { font-family: ui-monospace, Consolas, monospace; font-size: 12px; white-space: pre-wrap; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.form-grid input, .form-grid select { width: 100%; }
.channel-card h3 { font-size: 18px; }
@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .side { border-left: 0; border-bottom: 1px solid var(--line); }
}