:root {
  --navy: #1E3A5F;
  --navy2: #2E5580;
  --gold: #E8B930;
  --success: #16A34A;
  --danger: #DC2626;
  --bg: #F6F7F9;
  --card-border: rgba(30, 58, 95, 0.12);
  --text: #1F2937;
  --text-muted: #6B7280;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

.topbar {
  background: linear-gradient(135deg, var(--navy2), var(--navy));
  color: #fff;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.topbar .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; }
.topbar .brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); }

.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.75);
}
.topbar nav a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.topbar nav a.active { color: #fff; background: rgba(255,255,255,0.14); box-shadow: inset 0 -2px 0 var(--gold); }

.topbar .logout { color: rgba(255,255,255,0.6); font-size: 12px; font-weight: 600; }
.topbar .logout:hover { color: #fff; }

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

h1 { font-size: 20px; margin: 0 0 4px; color: var(--navy); }
.subtitle { color: var(--text-muted); margin: 0 0 24px; font-size: 13px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
@media (max-width: 760px) { .grid { grid-template-columns: repeat(2, 1fr); } }

.card {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 16px;
}

.stat-card { display: flex; align-items: center; gap: 12px; }
.stat-icon {
  width: 38px; height: 38px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(30,58,95,0.06); color: var(--navy); flex-shrink: 0;
}
.stat-icon.on { background: var(--navy); color: var(--gold); }
.stat-value { font-size: 17px; font-weight: 700; color: var(--navy); }
.stat-label { font-size: 11.5px; color: var(--text-muted); }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 700;
}
.pill.on { background: rgba(22,163,74,0.1); color: var(--success); }
.pill.off { background: rgba(220,38,38,0.08); color: var(--danger); }
.pill .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.section-title {
  font-size: 13px; font-weight: 700; color: var(--navy);
  text-transform: uppercase; letter-spacing: 0.04em;
  margin: 0 0 12px;
}

.actions-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: 10px; font-size: 13px; font-weight: 700;
  border: 1px solid var(--card-border); background: #fff; color: var(--navy);
  cursor: pointer;
}
.btn:hover { border-color: var(--navy); }
.btn.primary { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn.primary:hover { background: var(--navy2); }
.btn.danger { color: var(--danger); border-color: rgba(220,38,38,0.3); }
.btn.danger:hover { background: rgba(220,38,38,0.06); }

form .field { margin-bottom: 14px; }
label { display: block; font-size: 12px; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
input[type=text], input[type=password], input[type=tel], textarea {
  width: 100%; padding: 10px 12px; border-radius: 9px;
  border: 1px solid var(--card-border); font-size: 13px; font-family: inherit;
  background: #fbfbfc;
}
input:focus, textarea:focus { outline: 2px solid var(--navy2); outline-offset: 0; background: #fff; }
textarea { resize: vertical; min-height: 80px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--text-muted); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.03em; padding: 8px 10px; border-bottom: 1px solid var(--card-border); }
td { padding: 10px; border-bottom: 1px solid var(--card-border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
code { background: rgba(30,58,95,0.06); padding: 2px 6px; border-radius: 5px; font-size: 12px; }

.method { font-size: 11px; font-weight: 800; padding: 2px 7px; border-radius: 5px; }
.method.get { background: rgba(22,163,74,0.1); color: var(--success); }
.method.post { background: rgba(30,58,95,0.1); color: var(--navy); }

.qr-wrap { display: flex; flex-direction: column; align-items: center; gap: 16px; padding: 32px 16px; }
.qr-wrap img { width: 280px; height: 280px; border-radius: 14px; border: 1px solid var(--card-border); }
.qr-hint { color: var(--text-muted); font-size: 12.5px; text-align: center; max-width: 320px; }

.login-wrap { max-width: 360px; margin: 10vh auto 0; }
.login-wrap .card { padding: 28px; }
.login-wrap h1 { text-align: center; }
.login-wrap .subtitle { text-align: center; }
.error-text { color: var(--danger); font-size: 12.5px; margin: -6px 0 14px; }

.empty-state { text-align: center; color: var(--text-muted); padding: 40px 0; font-size: 13px; }

.toast {
  position: fixed; bottom: 20px; right: 20px;
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 10px;
  font-size: 13px; font-weight: 600; box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  display: none;
}