:root {
  --admin-bg: #f3f7fb;
  --admin-surface: #ffffff;
  --admin-text: #10233f;
  --admin-muted: #63718a;
  --admin-line: rgba(16, 35, 63, .12);
  --admin-blue: #143e91;
  --admin-cyan: #16b8d7;
  --admin-green: #208b62;
  --admin-gold: #c89428;
  --admin-shadow: 0 16px 42px rgba(16,35,63,.1);
}
body.admin-body {
  margin: 0;
  background: var(--admin-bg);
  color: var(--admin-text);
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
}
.admin-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  min-height: 100vh;
}
.admin-sidebar {
  background: #0f2d5f;
  color: #fff;
  padding: 22px;
}
.admin-sidebar h1 { font-size: 22px; margin: 0 0 24px; }
.admin-sidebar a {
  display: block;
  color: rgba(255,255,255,.86);
  padding: 11px 12px;
  border-radius: 8px;
  margin-bottom: 6px;
  text-decoration: none;
  font-weight: 700;
}
.admin-sidebar a.active, .admin-sidebar a:hover { background: rgba(255,255,255,.12); color: #fff; }
.admin-main { padding: clamp(18px, 4vw, 34px); }
.admin-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 22px;
}
.admin-header h2 { margin: 0; font-size: clamp(28px, 4vw, 42px); }
.admin-header p { color: var(--admin-muted); margin: 6px 0 0; }
.admin-card, .stat-card, .admin-table-wrap, .login-card {
  background: var(--admin-surface);
  border: 1px solid var(--admin-line);
  border-radius: 8px;
  box-shadow: var(--admin-shadow);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}
.stat-card { padding: 18px; }
.stat-card span { color: var(--admin-muted); font-weight: 800; font-size: 12px; text-transform: uppercase; }
.stat-card strong { display: block; font-size: 32px; margin-top: 8px; color: var(--admin-blue); }
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.admin-card { padding: 18px; }
.admin-card h3 { margin-top: 0; }
.progress-bar { height: 9px; background: #e7eef7; border-radius: 999px; overflow: hidden; margin: 10px 0; }
.progress-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--admin-blue), var(--admin-cyan)); }
.admin-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 12px; border-bottom: 1px solid var(--admin-line); }
th { font-size: 12px; text-transform: uppercase; color: var(--admin-muted); }
.admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: var(--admin-blue);
  color: #fff;
  padding: 10px 14px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.admin-btn.secondary { background: #fff; color: var(--admin-blue); border: 1px solid var(--admin-line); }
.form-grid { display: grid; gap: 14px; max-width: 760px; }
.form-grid label { display: grid; gap: 7px; color: var(--admin-muted); font-weight: 800; }
.form-grid input, .form-grid select, .form-grid textarea {
  min-height: 44px;
  border: 1px solid var(--admin-line);
  border-radius: 8px;
  padding: 10px 12px;
}
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px;
  background: radial-gradient(circle at 20% 10%, rgba(22,184,215,.2), transparent 26rem), var(--admin-bg);
}
.login-card { width: min(440px, 100%); padding: 26px; }
.login-card h1 { margin-top: 0; color: var(--admin-blue); }
.notice { padding: 12px; border-radius: 8px; background: #fff7df; color: #6b4b00; margin-bottom: 14px; }
@media (max-width: 850px) {
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { position: static; }
  .admin-header { flex-direction: column; align-items: flex-start; }
}