:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --line: #334155;
  --primary: #38bdf8;
  --danger: #f87171;
  --success: #4ade80;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: var(--text);
}
a { color: var(--primary); text-decoration: none; }
.app-shell { max-width: 1280px; margin: 0 auto; padding: 20px; }
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  background: rgba(15, 23, 42, 0.92); border: 1px solid var(--line);
  border-radius: 18px; padding: 16px 20px; position: sticky; top: 12px; backdrop-filter: blur(10px);
}
.brand { font-size: 24px; font-weight: 700; }
.subtitle, .muted { color: var(--muted); }
.topnav { display: flex; flex-wrap: wrap; gap: 12px; }
.topnav a, .btn, .platform-btn {
  display: inline-flex; align-items: center; justify-content: center; border-radius: 12px;
  border: 1px solid var(--line); padding: 10px 14px; background: var(--panel-2); color: var(--text);
}
.content { margin-top: 20px; display: grid; gap: 20px; }
.card {
  background: rgba(17, 24, 39, 0.92); border: 1px solid var(--line); border-radius: 18px; padding: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,.2);
}
.grid { display: grid; gap: 16px; }
.cards { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.two-col { grid-template-columns: 1.5fr 1fr; }
.metric { font-size: 34px; font-weight: 800; }
.metric-label { color: var(--muted); }
.action-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.action-row.compact { gap: 8px; }
.btn-primary { background: var(--primary); color: #082f49; border-color: transparent; font-weight: 700; }
.btn-danger { background: var(--danger); color: #450a0a; border-color: transparent; font-weight: 700; }
.form-grid {
  display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr));
}
.form-grid label, .detail-list div { display: grid; gap: 8px; }
.form-grid label span { color: var(--muted); font-size: 14px; }
.form-grid input, .form-grid textarea, .form-grid select, #contentBox {
  width: 100%; border-radius: 12px; border: 1px solid var(--line); background: #0b1220; color: var(--text);
  padding: 12px 14px; font-size: 14px;
}
.form-grid textarea, #contentBox { resize: vertical; }
.full-width { grid-column: 1 / -1; }
.table-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--line); padding: 14px 10px; vertical-align: top; }
th { text-align: left; color: var(--muted); font-weight: 600; }
.platform-row, .platform-links { display: flex; flex-wrap: wrap; gap: 8px; }
.platform-btn { font-size: 13px; padding: 8px 10px; }
.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 6px 10px; font-size: 12px; }
.badge-draft { background: #334155; color: #cbd5e1; }
.badge-ready { background: #0f766e; color: #ccfbf1; }
.badge-posted { background: #14532d; color: #dcfce7; }
.badge-error { background: #7f1d1d; color: #fee2e2; }
.alert { border-radius: 12px; padding: 12px 14px; margin-bottom: 14px; border: 1px solid var(--line); }
.alert-success { background: rgba(34, 197, 94, 0.12); }
.alert-error { background: rgba(248, 113, 113, 0.12); }
.auth-page {
  min-height: 100vh; display: grid; place-items: center; padding: 20px;
}
.auth-card {
  width: min(100%, 420px); background: rgba(17, 24, 39, 0.96); border: 1px solid var(--line);
  border-radius: 20px; padding: 28px;
}
.auth-card h1 { margin-top: 0; }
.auth-card p { color: var(--muted); }
.detail-list { display: grid; gap: 10px; margin-bottom: 16px; }
ol { color: var(--text); }
@media (max-width: 900px) {
  .topbar, .table-head, .two-col { grid-template-columns: 1fr; display: grid; }
  .form-grid { grid-template-columns: 1fr; }
}
.media-preview { display: grid; gap: 12px; }
.media-preview img, .thumb {
  max-width: 220px;
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.media-preview video, .thumb-video {
  max-width: 320px;
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
}
small.muted { display: block; margin-top: 6px; }