/* St. Ann's HRMS Design System */
:root {
  --primary: #1e3a8a;
  --primary-hover: #1e40af;
  --primary-light: #eff6ff;
  --secondary: #0f766e;
  --accent: #f59e0b;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --info: #0284c7;
  --info-light: #f0f9ff;
  --bg-main: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --sidebar-bg: #0f172a;
  --sidebar-text: #cbd5e1;
  --sidebar-hover: #1e293b;
  --sidebar-active: #2563eb;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  margin: 0;
  padding: 0;
}

/* Header customization */
header {
  background: #ffffff !important;
  color: var(--text-main) !important;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

header .header-lg, header .header-sm {
  color: var(--text-main) !important;
  font-weight: 700;
  font-size: 1.15rem;
}

/* Sidebar styling */
aside {
  background: var(--sidebar-bg) !important;
  border-right: 1px solid #1e293b;
}

aside .side-nav-menu a, aside .side-nav-menu div {
  color: var(--sidebar-text) !important;
  padding: 9px 16px;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: 6px;
  margin: 2px 8px;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}

aside .side-nav-menu a:hover, aside .side-nav-menu div:hover {
  background-color: var(--sidebar-hover) !important;
  color: #ffffff !important;
}

aside .side-nav-menu li.active > a, aside .side-nav-menu a.active {
  background-color: var(--sidebar-active) !important;
  color: #ffffff !important;
  font-weight: 600;
}

.nav-section-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #64748b !important;
  padding: 12px 18px 4px 18px;
  font-weight: 700;
}

/* Dashboard & Cards */
.hrms-container {
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.page-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0;
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 8px 0;
}

.stat-subtext {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.15s ease-in-out;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-secondary { background: #e2e8f0; color: #1e293b; }
.btn-secondary:hover { background: #cbd5e1; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-info { background: var(--info); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 0.82rem; }

/* Tables */
.hrms-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #fdfdfd;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: #1e293b;
}

.card-body {
  padding: 20px;
}

.table-responsive {
  overflow-x: auto;
}

table.hrms-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

table.hrms-table th {
  background: #f8fafc;
  color: #475569;
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
}

table.hrms-table td {
  padding: 12px 16px;
  font-size: 0.9rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}

table.hrms-table tr:hover td {
  background: #f8fafc;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-secondary { background: #f1f5f9; color: #475569; }

/* Tabs */
.tabs-nav {
  display: flex;
  border-bottom: 2px solid var(--border-color);
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
}

.tab-btn {
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-muted);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
}

.form-control {
  padding: 8px 12px;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: #ffffff;
  outline: none;
  transition: border-color 0.15s ease;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.12);
}

.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 0.9rem;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #fde68a; }
.alert-success { background: var(--success-light); color: #166534; border: 1px solid #bbf7d0; }
.alert-danger { background: var(--danger-light); color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: var(--info-light); color: #075985; border: 1px solid #bae6fd; }

/* Filter Bars */
.filter-bar {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.search-input {
  flex: 1;
  min-width: 220px;
}