:root {
  --accent: #0b5fff;
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 60px;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; }
.brand img { height: 32px; width: 32px; object-fit: contain; border-radius: 6px; }
.brand .badge {
  height: 32px; width: 32px; border-radius: 6px; background: var(--accent);
  color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px;
}

nav.main-nav { display: flex; gap: 4px; }
nav.main-nav a {
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
}
nav.main-nav a.active, nav.main-nav a:hover { background: var(--bg); color: var(--text); text-decoration: none; }

.user-menu { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--muted); }
.user-menu form { display: inline; }
.user-menu button.link {
  background: none; border: none; color: var(--muted); cursor: pointer; font-size: 14px; padding: 0;
}

.container { max-width: 1100px; margin: 0 auto; padding: 28px 24px 60px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.subtitle { color: var(--muted); font-size: 14px; margin: 0 0 20px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.kpi .value { font-size: 26px; font-weight: 700; color: var(--accent); }
.kpi .label { color: var(--muted); font-size: 13px; margin-top: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
tr:last-child td { border-bottom: none; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 9px 16px;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { opacity: 0.9; text-decoration: none; }
.btn.secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--muted); }
.form-row input[type=text], .form-row input[type=email], .form-row input[type=password],
.form-row input[type=date], .form-row select, .form-row input[type=file] {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 14px;
  background: #fff;
}
.form-row input[type=color] {
  width: 60px;
  height: 40px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
  cursor: pointer;
}
.form-inline { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.form-inline .form-row { margin-bottom: 0; min-width: 160px; }

.alert { padding: 12px 14px; border-radius: 8px; font-size: 14px; margin-bottom: 16px; }
.alert.error { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.alert.success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

.pill { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.pill.super_admin { background: #ede9fe; color: #6d28d9; }
.pill.station_admin { background: #dbeafe; color: #1d4ed8; }
.pill.station_user { background: #f3f4f6; color: #374151; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { width: 360px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 32px; }
.login-card h1 { text-align: center; margin-bottom: 4px; }
.login-card .subtitle { text-align: center; }

.pagination { display: flex; gap: 8px; margin-top: 16px; }
.chart-wrap { position: relative; height: 320px; }
.empty { color: var(--muted); font-size: 14px; padding: 20px 0; text-align: center; }