:root {
  --primary: #185FA5;
  --danger: #E24B4A;
  --success: #639922;
  --bg: #f4f6f9;
  --card-bg: #fff;
  --text: #222;
  --muted: #888;
  --border: #dde3ea;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans KR', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* Layout */
#app { max-width: 600px; margin: 0 auto; min-height: 100vh; position: relative; }
.page { display: none; padding: 16px 16px 80px; }
.page.active { display: block; }

/* Header */
.header {
  background: var(--primary);
  color: #fff;
  padding: 14px 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header h1 { font-size: 17px; font-weight: 700; }
.header .subtitle { font-size: 12px; opacity: 0.8; }
.admin-badge {
  background: #FFD600;
  color: #333;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
}

/* Bottom nav */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 600px;
  background: #fff;
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 200;
}
.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 4px;
  cursor: pointer;
  font-size: 11px;
  color: var(--muted);
  border: none;
  background: none;
  min-height: 44px;
}
.nav-item.active { color: var(--primary); }
.nav-item svg { margin-bottom: 2px; }

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.07);
}
.card-title { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.card-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.card-row { display: flex; justify-content: space-between; align-items: center; }

/* Summary grid */
.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.summary-card { background: #fff; border-radius: 10px; padding: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.07); }
.summary-card .label { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.summary-card .good { color: var(--success); font-weight: 700; }
.summary-card .bad { color: var(--danger); font-weight: 700; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  width: 100%;
  margin-bottom: 8px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #1450a0; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-outline { background: #fff; color: var(--primary); border: 2px solid var(--primary); }
.btn-gray { background: #eee; color: #555; }
.btn-sm { min-height: 36px; padding: 6px 14px; font-size: 13px; width: auto; margin-bottom: 0; }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: #444; }
.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 9px;
  font-size: 15px;
  background: #fff;
  appearance: none;
}
.form-control:focus { outline: none; border-color: var(--primary); }

/* Alarm list */
.alarm-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.alarm-item:last-child { border-bottom: none; }
.alarm-type { font-size: 13px; font-weight: 700; }
.alarm-type.ALARM { color: var(--danger); }
.alarm-type.RESTORE { color: var(--success); }
.alarm-time { font-size: 12px; color: var(--muted); }

/* Record steps */
.step-title { font-size: 18px; font-weight: 700; margin-bottom: 16px; color: var(--primary); }
.category-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.category-btn {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 20px 10px;
  text-align: center;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  min-height: 44px;
}
.category-btn:hover, .category-btn.selected { border-color: var(--primary); color: var(--primary); background: #edf3fc; }
.category-btn.danger-cat { border-color: var(--danger); color: var(--danger); background: #fdf1f1; }

.subcategory-list { display: flex; flex-direction: column; gap: 8px; }
.subcategory-btn {
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  text-align: left;
  cursor: pointer;
  font-size: 14px;
  min-height: 44px;
}
.subcategory-btn:hover, .subcategory-btn.selected { border-color: var(--primary); background: #edf3fc; }

.item-list { list-style: none; }
.item-btn {
  width: 100%;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  margin-bottom: 6px;
  text-align: left;
  cursor: pointer;
  font-size: 13px;
  min-height: 44px;
}
.item-btn:hover { border-color: var(--danger); background: #fdf1f1; }
.item-no { font-size: 11px; color: var(--muted); margin-right: 6px; }

.selected-item-text {
  color: var(--danger);
  font-weight: 700;
  background: #fff0f0;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
  font-size: 14px;
}

/* Photo preview */
.photo-preview { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.photo-thumb {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
}

/* Monthly list */
.month-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  background: #fff;
  border-radius: 10px;
  margin-bottom: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  cursor: pointer;
}
.month-label { font-size: 16px; font-weight: 700; }
.status-badge {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.status-done { background: #e8f5e9; color: var(--success); }
.status-draft { background: #fff3e0; color: #f57c00; }

/* Defect record card */
.defect-card {
  background: #fff;
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 8px;
  border-left: 4px solid var(--danger);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.defect-item-text { font-size: 13px; font-weight: 700; color: var(--danger); margin-bottom: 4px; }
.defect-meta { font-size: 12px; color: var(--muted); }

/* Admin dashboard */
.admin-stat-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.stat-card { background: #fff; border-radius: 10px; padding: 14px; text-align: center; box-shadow: 0 1px 3px rgba(0,0,0,0.07); }
.stat-num { font-size: 32px; font-weight: 800; }
.stat-num.red { color: var(--danger); }
.stat-num.green { color: var(--success); }
.stat-label { font-size: 12px; color: var(--muted); margin-top: 4px; }

.building-card {
  background: #fff;
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  cursor: pointer;
}
.building-name { font-size: 15px; font-weight: 700; }
.building-meta { font-size: 12px; color: var(--muted); margin-top: 3px; }
.alarm-count-badge {
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  background: #eee;
  color: #666;
}
.alarm-count-badge.high { background: #fde8e8; color: var(--danger); }

/* Login page */
.login-wrap { max-width: 400px; margin: 60px auto 0; padding: 24px 20px; }
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo h2 { font-size: 26px; font-weight: 800; color: var(--primary); }
.login-logo p { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* Loading / Error */
.loading { text-align: center; padding: 30px; color: var(--muted); }
.error-msg { color: var(--danger); font-size: 13px; margin-top: 6px; }
.success-msg { color: var(--success); font-size: 13px; margin-top: 6px; }

/* Admin alarm table */
.alarm-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { background: #f0f4f8; font-weight: 600; }
.tag-alarm { color: var(--danger); font-weight: 700; }
.tag-restore { color: var(--success); font-weight: 700; }

/* Section title */
.section-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
  margin-top: 16px;
  color: #333;
}

/* Back btn */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  padding: 0;
}

/* Filter row */
.filter-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.filter-row .form-control { width: auto; flex: 1; min-width: 0; padding: 8px 10px; font-size: 13px; }

/* Contact btn */
.tel-link { color: var(--primary); text-decoration: none; font-weight: 600; }
.tel-link:hover { text-decoration: underline; }

@media (max-width: 400px) {
  .category-grid { grid-template-columns: 1fr 1fr; }
  .admin-stat-row { grid-template-columns: 1fr 1fr; }
}

/* Monthly Preview Table */
.preview-table { width: 100%; border-collapse: collapse; margin-bottom: 0; }
.preview-table th, .preview-table td {
  border: 1px solid #555;
  padding: 7px 10px;
  font-size: 12px;
  vertical-align: middle;
}
.preview-table th {
  background: #f0f2f5;
  font-weight: 700;
  text-align: center;
  white-space: nowrap;
}
.preview-table td { background: #fff; }
.preview-section-header {
  background: #e8edf2;
  border: 1px solid #555;
  border-bottom: none;
  padding: 6px 10px;
  font-weight: 700;
  font-size: 13px;
  margin-top: 8px;
}