* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #f5f5f5; color: #333; font-size: 14px; }

/* Nav */
nav { background: #1a1a2e; color: #fff; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; height: 50px; }
.nav-brand { font-weight: 700; font-size: 16px; }
.nav-links a { color: #ccc; text-decoration: none; padding: 14px 12px; display: inline-block; font-size: 13px; }
.nav-links a:hover, .nav-links a.active { color: #fff; border-bottom: 2px solid #4fc3f7; }
.nav-logout { opacity: 0.6; }

/* Main */
main { max-width: 1200px; margin: 20px auto; padding: 0 16px; }
h1 { margin-bottom: 16px; font-size: 22px; }
h2 { margin: 24px 0 10px; font-size: 16px; border-bottom: 1px solid #ddd; padding-bottom: 6px; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; padding: 16px; text-align: center; }
.stat-value { font-size: 24px; font-weight: 700; }
.stat-label { font-size: 12px; color: #777; margin-top: 4px; }

/* Tables */
table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; overflow: hidden; margin-bottom: 16px; }
th { background: #f8f8f8; font-weight: 600; text-align: left; padding: 8px 12px; font-size: 12px; text-transform: uppercase; color: #555; border-bottom: 2px solid #e0e0e0; }
td { padding: 7px 12px; border-bottom: 1px solid #f0f0f0; }
tr:hover { background: #fafafa; }
td a { color: #1976d2; text-decoration: none; }
td a:hover { text-decoration: underline; }
.empty { text-align: center; color: #999; padding: 20px; }

/* Color coding */
.good { color: #2e7d32; font-weight: 600; }
.warn { color: #f57f17; font-weight: 600; }
.bad { color: #c62828; font-weight: 600; }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; }
.badge-good { background: #e8f5e9; color: #2e7d32; }
.badge-warn { background: #fff3e0; color: #e65100; }
.badge-bad { background: #ffebee; color: #c62828; }

/* Maintenance */
.badge-maint { background: #fff3e0; color: #e65100; }
.btn-maint { background: #ff9800; color: #fff; font-size: 11px; padding: 3px 8px; border: none; border-radius: 4px; cursor: pointer; }
.btn-maint:hover { background: #f57c00; }
.row-maint { opacity: 0.6; }

/* Toolbar / forms */
.toolbar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; padding: 12px; background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; }
.toolbar label { font-size: 12px; font-weight: 600; color: #555; }
.toolbar input, .toolbar select { padding: 6px 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 13px; }
.btn { display: inline-block; padding: 6px 14px; background: #1976d2; color: #fff; border: none; border-radius: 4px; font-size: 13px; cursor: pointer; text-decoration: none; }
.btn:hover { background: #1565c0; }
.btn-export { background: #2e7d32; }
.btn-export:hover { background: #1b5e20; }

/* Summary bar */
.summary-bar { display: flex; gap: 20px; flex-wrap: wrap; padding: 10px 14px; background: #e3f2fd; border: 1px solid #bbdefb; border-radius: 6px; margin-bottom: 16px; font-size: 13px; }

/* Detail grid */
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 8px; padding: 12px; background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; margin-bottom: 16px; font-size: 13px; }
.note { color: #f57f17; font-style: italic; margin-bottom: 12px; }

/* Export sections */
.export-section { background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; padding: 16px; margin-bottom: 16px; }
.export-section h2 { margin-top: 0; }
.export-section p { font-size: 13px; color: #666; margin-bottom: 10px; }

/* Login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #1a1a2e; }
.login-card { background: #fff; padding: 36px; border-radius: 8px; width: 340px; }
.login-card h1 { text-align: center; margin-bottom: 24px; font-size: 20px; }
.login-card label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 4px; color: #555; }
.login-card input { width: 100%; padding: 8px 10px; border: 1px solid #ccc; border-radius: 4px; margin-bottom: 14px; font-size: 14px; }
.login-card button { width: 100%; padding: 10px; background: #1976d2; color: #fff; border: none; border-radius: 4px; font-size: 14px; cursor: pointer; }
.login-card button:hover { background: #1565c0; }
.alert-error { background: #ffebee; color: #c62828; padding: 8px 12px; border-radius: 4px; margin-bottom: 14px; font-size: 13px; text-align: center; }

/* Error page */
.error-page { text-align: center; padding: 60px 20px; }
.error-page h1 { color: #c62828; margin-bottom: 12px; }
.error-page p { margin-bottom: 20px; color: #666; }

/* Footer */
footer { text-align: center; padding: 20px; color: #999; font-size: 12px; }

/* Form card (add/edit) */
.form-card { background: #fff; border: 1px solid #e0e0e0; border-radius: 6px; padding: 20px; max-width: 500px; }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 4px; color: #555; }
.form-row input, .form-row select, .form-row textarea { width: 100%; padding: 7px 10px; border: 1px solid #ccc; border-radius: 4px; font-size: 13px; font-family: inherit; }
.form-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 10px; font-size: 13px; color: #555; }

/* Responsive */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .toolbar { flex-direction: column; align-items: stretch; }
  table { font-size: 12px; }
  th, td { padding: 6px 8px; }
}