/* =========================================================================
   Safety Certificate Management System -- Admin Panel Styles
   ========================================================================= */

:root {
  --navy: #1b3a5c;
  --navy-dark: #12283f;
  --navy-light: #eaf0f6;
  --accent-red: #b23a2f;
  --accent-green: #1e7d32;
  --accent-amber: #b8860b;
  --gray-50: #f7f8fa;
  --gray-100: #eef0f3;
  --gray-200: #dfe3e8;
  --gray-400: #9aa4b2;
  --gray-600: #5b6570;
  --gray-800: #2b323b;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(20, 30, 45, 0.08), 0 1px 2px rgba(20, 30, 45, 0.06);
  font-size: 15px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--gray-50);
  color: var(--gray-800);
}

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

/* ---- App shell ---------------------------------------------------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  background: var(--navy-dark);
  color: #fff;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.sidebar-brand .brand-mark { font-size: 26px; }
.sidebar-brand strong { display: block; font-size: 14px; }
.sidebar-brand small { color: #b7c4d4; font-size: 11.5px; }

.sidebar-nav { padding: 14px 10px; display: flex; flex-direction: column; }
.sidebar-nav a {
  color: #d7e0ea;
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 13.5px;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.08); text-decoration: none; color: #fff; }
.nav-group-label {
  margin: 14px 12px 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #7f93a8;
}

.main-col { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 14px 26px;
}
.page-title { font-size: 18px; font-weight: 600; }
.topbar-user { display: flex; align-items: center; gap: 14px; font-size: 13.5px; color: var(--gray-600); }
.btn-link { color: var(--navy); font-weight: 600; }

.content { padding: 24px 26px; flex: 1; }

.admin-footer {
  padding: 14px 26px;
  font-size: 12px;
  color: var(--gray-400);
  border-top: 1px solid var(--gray-200);
}

/* ---- Alerts --------------------------------------------------------- */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 18px; font-size: 13.5px; }
.alert ul { margin: 0; padding-left: 18px; }
.alert-error { background: #fdecea; color: #922b21; border: 1px solid #f3c6c1; }
.alert-success { background: #eafaf1; color: #1e6b3a; border: 1px solid #bfe9cf; }
.alert-warning { background: #fdf2e0; color: #8a5a00; border: 1px solid #f2ddab; }

/* ---- Stat cards ------------------------------------------------------ */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 26px; }
.stat-card {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 6px;
}
.stat-label { font-size: 12px; color: var(--gray-600); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--navy); }
.stat-card.stat-good .stat-value { color: var(--accent-green); }
.stat-card.stat-warn .stat-value { color: var(--accent-red); }
.stat-card.stat-warning .stat-value { color: var(--accent-amber); }

/* ---- Panels / tables -------------------------------------------------- */
.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel {
  background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow);
}
.panel.span-2 { grid-column: span 2; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.panel-head h2 { font-size: 15px; margin: 0; }

.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.data-table th, .data-table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--gray-100); }
.data-table thead th { color: var(--gray-600); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; border-bottom: 2px solid var(--gray-200); }
.data-table tfoot th { border-top: 2px solid var(--gray-200); background: var(--gray-50); }
.empty-cell { text-align: center; color: var(--gray-400); padding: 22px 10px !important; }
.actions-cell a { margin-right: 10px; font-size: 12.5px; }
.text-danger { color: var(--accent-red); }

.detail-list { display: grid; grid-template-columns: 160px 1fr; gap: 8px 12px; font-size: 13.5px; margin: 0; }
.detail-list dt { color: var(--gray-600); }
.detail-list dd { margin: 0; }

/* ---- Badges ------------------------------------------------------------ */
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.02em; }
.badge-good { background: #e4f6ea; color: var(--accent-green); }
.badge-bad { background: #fbeae8; color: var(--accent-red); }
.badge-muted { background: var(--gray-100); color: var(--gray-600); }
.badge-warning { background: #fdf2e0; color: var(--accent-amber); }

.nav-pending-badge {
  display: inline-block; min-width: 18px; padding: 1px 6px; margin-left: 6px;
  border-radius: 999px; background: var(--accent-amber); color: #fff;
  font-size: 10.5px; font-weight: 700; text-align: center; line-height: 1.5;
}

/* ---- Forms --------------------------------------------------------- */
.card-form { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.form-section { margin-bottom: 26px; }
.form-section h3 { margin: 0 0 12px; font-size: 14.5px; color: var(--navy); border-bottom: 1px solid var(--gray-100); padding-bottom: 8px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.form-grid label, label { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; font-weight: 600; color: var(--gray-600); }
.form-grid .span-2, .span-2 { grid-column: span 2; }

input[type="text"], input[type="email"], input[type="date"], input[type="number"], input[type="password"], select {
  font: inherit; font-weight: 400; color: var(--gray-800);
  padding: 9px 11px; border: 1px solid var(--gray-200); border-radius: 6px; background: #fff;
}
input:focus, select:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(27,58,92,0.12); }

.checkbox-label { flex-direction: row !important; align-items: center; gap: 8px !important; font-weight: 500; }
.checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 18px; }

.marks-input { width: 110px; }
.marks-summary { margin-top: 10px; font-size: 13px; color: var(--gray-600); }
.hint-text { font-size: 12.5px; color: var(--gray-600); }

.form-actions { display: flex; gap: 10px; }

.btn {
  display: inline-block; padding: 10px 18px; border-radius: 6px; font-weight: 600; font-size: 13.5px;
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-dark); }
.btn-secondary { background: #fff; border-color: var(--gray-200); color: var(--gray-800); }
.btn-secondary:hover { background: var(--gray-50); }
.btn-block { width: 100%; text-align: center; }

.list-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; }
.search-form { display: flex; gap: 8px; flex: 1; max-width: 480px; }
.search-form input { flex: 1; }

.detail-actions { display: flex; gap: 10px; margin-bottom: 18px; align-items: center; }

.chip-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chip-list li { background: var(--navy-light); color: var(--navy); padding: 5px 12px; border-radius: 999px; font-size: 12.5px; }

/* ---- Auth (login) page ------------------------------------------------- */
.auth-body { background: var(--navy-dark); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.auth-card { background: #fff; border-radius: 12px; padding: 34px 32px; width: 100%; max-width: 380px; box-shadow: 0 20px 50px rgba(0,0,0,0.3); }
.auth-brand { text-align: center; margin-bottom: 20px; }
.auth-brand .brand-mark { font-size: 34px; }
.auth-brand h1 { font-size: 17px; margin: 6px 0 2px; color: var(--navy); }
.auth-brand p { margin: 0; font-size: 12.5px; color: var(--gray-600); }
.auth-form { display: flex; flex-direction: column; gap: 14px; }
.auth-hint { text-align: center; font-size: 11.5px; color: var(--gray-400); margin-top: 16px; }
.auth-footer-link { text-align: center; font-size: 12.5px; margin-top: 8px; }

@media (max-width: 900px) {
  .stat-grid, .panel-grid, .detail-grid, .form-grid { grid-template-columns: 1fr; }
  .panel.span-2, .form-grid .span-2 { grid-column: span 1; }
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; }
}