:root {
  --primary: #1a5f3f;
  --primary-dark: #0f3d28;
  --accent: #e8a33d;
  --danger: #c0392b;
  --bg: #f4f6f5;
  --card: #ffffff;
  --text: #1f2b26;
  --muted: #6b7a74;
  --border: #e1e6e3;
  --radius: 14px;
}

* { 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);
  -webkit-tap-highlight-color: transparent;
}

.app-header {
  background: var(--primary);
  color: #fff;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header h1 {
  font-size: 18px;
  margin: 0;
  font-weight: 600;
}

.app-header a, .app-header button.link {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  background: rgba(255,255,255,0.15);
  border: none;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
}

.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 20px;
}

.container.wide { max-width: 1000px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  border: 1px solid var(--border);
}

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-box {
  width: 100%;
  max-width: 380px;
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  text-align: center;
}

.login-box .logo {
  font-size: 40px;
  margin-bottom: 8px;
}

.login-box h2 {
  margin: 0 0 4px;
  color: var(--primary-dark);
}

.login-box p.sub {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 14px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
  text-align: left;
}

input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  margin-bottom: 16px;
  background: #fbfcfb;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
}

button, .btn {
  display: inline-block;
  width: 100%;
  padding: 13px 16px;
  border: none;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  box-sizing: border-box;
}

button:active { background: var(--primary-dark); }

.btn.secondary {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn.danger { background: var(--danger); }
.btn.accent { background: var(--accent); color: #3a2a04; }
.btn.small { width: auto; padding: 8px 14px; font-size: 13px; }

.alert {
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 14px;
}
.alert.error { background: #fbe9e7; color: var(--danger); border: 1px solid #f3c6c0; }
.alert.success { background: #e6f4ea; color: #1a5f3f; border: 1px solid #b9e0c4; }
.alert.warning { background: #fff6e0; color: #8a6300; border: 1px solid #f1dfa0; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.badge.ok { background: #e6f4ea; color: #1a5f3f; }
.badge.warn { background: #fff6e0; color: #8a6300; }
.badge.off { background: #f1f1f1; color: #777; }

.checkpoint-list { list-style: none; margin: 0; padding: 0; }
.checkpoint-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.checkpoint-list li:last-child { border-bottom: none; }
.checkpoint-list .name { font-weight: 600; }
.checkpoint-list .time { font-size: 13px; color: var(--muted); }

.scan-area {
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
  background: #000;
}

#reader { width: 100%; }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
}
th, td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
th { background: #eef2ef; color: var(--primary-dark); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid var(--border);
  text-align: center;
}
.stat-card .num { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-card .label { font-size: 12px; color: var(--muted); margin-top: 4px; }

.nav-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
}
.nav-tabs a {
  padding: 8px 16px;
  border-radius: 20px;
  text-decoration: none;
  color: var(--primary-dark);
  background: #fff;
  border: 1px solid var(--border);
  font-size: 14px;
  white-space: nowrap;
}
.nav-tabs a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.qr-print-box {
  text-align: center;
  padding: 24px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: #fff;
}

.offline-banner {
  background: var(--danger);
  color: #fff;
  text-align: center;
  padding: 8px;
  font-size: 13px;
  display: none;
}
.offline-banner.show { display: block; }

.form-row { display: flex; gap: 12px; }
.form-row > div { flex: 1; }

@media (max-width: 480px) {
  .form-row { flex-direction: column; gap: 0; }
}