:root {
  --navy: #202A44;
  --red: #CE0037;
  --cloud: #E5E1E6;
  --black: #000000;
  --electric: #4C00FF;
  --white: #FFFFFF;
  --gray-100: #F7F7F8;
  --gray-200: #EDEDF0;
  --gray-300: #D4D4D8;
  --gray-400: #A1A1AA;
  --gray-500: #71717A;
  --gray-600: #52525B;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #CE0037;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

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

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--gray-100);
  color: var(--black);
  min-height: 100vh;
}

/* Login Page */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--navy) 0%, #1a2238 100%);
}

.login-card {
  background: var(--white);
  border-radius: 12px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.login-card .logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-card .logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.5px;
}

.login-card .logo p {
  color: var(--gray-500);
  font-size: 14px;
  margin-top: 4px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 6px;
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--electric);
  box-shadow: 0 0 0 3px rgba(76, 0, 255, 0.1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--electric);
  color: var(--white);
}
.btn-primary:hover { background: #3b00cc; }

.btn-danger {
  background: var(--danger);
  color: var(--white);
}
.btn-danger:hover { background: #a8002d; }

.btn-secondary {
  background: var(--gray-200);
  color: var(--gray-600);
}
.btn-secondary:hover { background: var(--gray-300); }

.btn-sm { padding: 6px 12px; font-size: 13px; }

.btn-full { width: 100%; }

.login-error {
  background: #FEE2E2;
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
}

/* Layout */
.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--navy);
  color: var(--white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.sidebar-logo small {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  transition: all 0.15s;
}

.sidebar-nav a:hover { color: var(--white); background: rgba(255,255,255,0.1); }
.sidebar-nav a.active { color: var(--white); background: var(--electric); }

.sidebar-nav a .icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

.sidebar-footer a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
}
.sidebar-footer a:hover { color: var(--white); }

.main-content {
  margin-left: 240px;
  flex: 1;
  padding: 32px;
  min-height: 100vh;
}

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

.page-header h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.card-body { padding: 20px; }

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--gray-500);
  font-weight: 500;
}

.stat-card .stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--navy);
  margin-top: 4px;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
}

table thead th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
}

table tbody td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--gray-200);
}

table tbody tr:hover { background: var(--gray-100); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: #D1FAE5; color: #065F46; }
.badge-danger { background: #FEE2E2; color: #991B1B; }
.badge-info { background: #DBEAFE; color: #1E40AF; }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal {
  background: var(--white);
  border-radius: 12px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 { font-size: 18px; font-weight: 600; }

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--gray-400);
  padding: 4px;
}
.modal-close:hover { color: var(--black); }

.modal-body { padding: 24px; }

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-200);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Form grid */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-grid .full-width { grid-column: 1 / -1; }

/* Toast */
.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: var(--radius);
  color: var(--white);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  animation: slideIn 0.3s ease;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--gray-400);
}

.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }