:root {
  --saas-bg: #f6f8fb;
  --saas-surface: #ffffff;
  --saas-border: #e6eaf0;
  --saas-text: #1f2937;
  --saas-muted: #6b7280;
  --saas-primary: #198754;
  --saas-primary-dark: #146c43;
  --saas-primary-soft: #e7f6ee;
  --saas-info-soft: #eaf3ff;
  --saas-danger-soft: #fdecec;
  --saas-warning-soft: #fff7e6;
  --saas-radius: 14px;
  --saas-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  --saas-shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.05);
}

/* Base */
body {
  background: var(--saas-bg);
  color: var(--saas-text);
  font-size: 0.95rem;
}

.text-muted {
  color: var(--saas-muted) !important;
}

/* ===========================================
   Navbar
=========================================== */

.navbar,
.topbar {
  background: #212529 !important; /* Bootstrap dark */
  color: #ffffff;
  border-bottom: 1px solid #343a40;
  box-shadow: var(--saas-shadow-sm);
}

.navbar-brand,
.navbar-brand:visited {
  color: #ffffff !important;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.navbar-nav .nav-link,
.navbar .nav-link {
  color: rgba(255, 255, 255, 0.85) !important;
  font-weight: 500;
  transition: all 0.15s ease;
}

.navbar-nav .nav-link:hover,
.navbar .nav-link:hover {
  color: #ffffff !important;
}

.navbar .dropdown-toggle,
.navbar .dropdown-item {
  font-weight: 500;
}

.navbar .dropdown-menu {
  border: 1px solid var(--saas-border);
  border-radius: 12px;
  box-shadow: var(--saas-shadow);
}

.navbar-brand {
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Sidebar */
.sidebar {
  background: var(--saas-surface) !important;
  border-right: 1px solid var(--saas-border) !important;
}

.sidebar-title {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.sidebar .list-group-item {
  border: 0;
  color: #374151;
  padding: 0.8rem 1rem;
  font-weight: 500;
}

.sidebar .list-group-item:hover {
  background: var(--saas-primary-soft);
  color: var(--saas-primary-dark);
}

.sidebar .list-group-item.fw-bold,
.sidebar .list-group-item.bg-light {
  background: #f8fafc !important;
  color: #6b7280;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Cards */
.card {
  border: 1px solid var(--saas-border);
  border-radius: var(--saas-radius);
  box-shadow: var(--saas-shadow-sm);
}

.card-header {
  border-bottom: 1px solid var(--saas-border);
  border-radius: var(--saas-radius) var(--saas-radius) 0 0 !important;
}

.card.shadow-sm,
.card.shadow-lg {
  box-shadow: var(--saas-shadow) !important;
}

/* Buttons */
.btn {
  border-radius: 10px;
  font-weight: 600;
  padding: 0.55rem 0.9rem;
}

.btn-sm {
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
}

.btn-success,
.btn-primary {
  box-shadow: 0 4px 12px rgba(25, 135, 84, 0.18);
}

.btn-success {
  background: var(--saas-primary);
  border-color: var(--saas-primary);
}

.btn-success:hover,
.btn-success:focus {
  background: var(--saas-primary-dark);
  border-color: var(--saas-primary-dark);
}

.btn-outline-secondary {
  border-color: var(--saas-border);
  color: #4b5563;
}

.btn-outline-secondary:hover {
  background: #f3f4f6;
  color: #111827;
  border-color: #d1d5db;
}

/* Forms */
.form-label {
  font-weight: 600;
  color: #374151;
}

.form-control,
.form-select {
  border-radius: 10px;
  border-color: #d9dee7;
  padding: 0.6rem 0.75rem;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--saas-primary);
  box-shadow: 0 0 0 0.18rem rgba(25, 135, 84, 0.13);
}

.form-text {
  color: var(--saas-muted);
}

/* Tables */
.table {
  color: var(--saas-text);
}

.table thead th {
  background: #f8fafc;
  color: #4b5563;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--saas-border);
}

.table tbody td {
  border-color: #edf0f4;
}

.table-hover tbody tr:hover {
  background: #f9fbfd;
}

.table-bordered {
  border-color: var(--saas-border);
}

/* Modals */
.modal-content {
  border: 0;
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.18);
}

.modal-header,
.modal-footer {
  border-color: var(--saas-border);
}

.modal-title {
  font-weight: 700;
}

/* Badges */
.badge {
  border-radius: 999px;
  padding: 0.45em 0.7em;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.badge-batch {
  background: #dbeafe;
  color: #1d4ed8;
  border: 1px solid #93c5fd;
}

.badge-single {
  background: #dcfce7;
  color: #15803d;
  border: 1px solid #86efac;
}

.badge.bg-secondary {
  background: #eef2f7 !important;
  color: #475569;
}

/* Alerts */
.alert {
  border-radius: 12px;
  border: 1px solid transparent;
}

.alert-success {
  background: var(--saas-primary-soft);
  border-color: #b7e4c7;
  color: #146c43;
}

.alert-warning {
  background: var(--saas-warning-soft);
  border-color: #ffe0a3;
}

.alert-danger {
  background: var(--saas-danger-soft);
  border-color: #f5b5b5;
}

.alert-info {
  background: var(--saas-info-soft);
  border-color: #b9d9ff;
}

/* Login */
.login-page-wrapper {
  background:
    radial-gradient(
      circle at top left,
      rgba(25, 135, 84, 0.18),
      transparent 28%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(13, 110, 253, 0.1),
      transparent 32%
    ),
    linear-gradient(135deg, #f4f7fb 0%, #eef7f2 100%);
}

.login-card {
  border-radius: 22px;
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.14) !important;
}

.login-form .form-control {
  text-align: center;
}

/* Utilities */
.rounded-saas {
  border-radius: var(--saas-radius) !important;
}

.shadow-saas {
  box-shadow: var(--saas-shadow) !important;
}

.img-thumbnail {
  border-radius: 14px;
  border: 1px solid #e5e7eb;
  background: #fff;
}

.card-header h5 {
  font-weight: 700;
}