/* Light Theme CSS */
:root {
    --body-bg: #ffffff;
    --card-bg: #f8f9fa;
    --text-color: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --navbar-bg: #f8f9fa;
    --navbar-text: #212529;
    --navbar-hover: #e9ecef;
    --primary-color: #212529;
    --primary-hover: #495057;
    --table-stripe: #f8f9fa;
    --table-hover: #e9ecef;
    --input-bg: #ffffff;
    --input-text: #212529;
    --modal-bg: #ffffff;
    --btn-text: #ffffff;
    --footer-bg: #f8f9fa;
    --footer-text: #6c757d;
    --shadow: rgba(0, 0, 0, 0.05);
  }
  
  /* Base Styles */
  body {
    padding-top: 72px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--body-bg);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
  }
  
  .content {
    flex: 1;
  }
  
  /* Navbar Styles */
  .navbar {
    background-color: var(--navbar-bg) !important;
    box-shadow: 0 2px 10px var(--shadow);
    padding: 0.75rem 1rem;
    transition: background-color 0.3s ease;
  }
  
  .navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-color) !important;
  }
  
  .nav-link {
    color: var(--navbar-text) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
  }
  
  .nav-link:hover {
    background-color: var(--navbar-hover);
  }
  
  /* Card Styles */
  .card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 6px var(--shadow);
    transition: all 0.3s ease;
  }
  
  .card-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
  }
  
  /* Button Styles */
  .btn-primary {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--btn-text) !important;
  }
  
  .btn-primary:hover {
    background-color: var(--primary-hover) !important;
    border-color: var(--primary-hover) !important;
  }
  
  .btn-outline-primary {
    color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
  }
  
  .btn-outline-primary:hover {
    background-color: var(--primary-color) !important;
    color: var(--btn-text) !important;
  }
  
  .btn-outline-danger {
    color: #dc3545 !important;
    border-color: #dc3545 !important;
  }
  
  .btn-outline-danger:hover {
    background-color: #dc3545 !important;
    color: var(--btn-text) !important;
  }
  
  /* Table Styles */
  .table {
    color: var(--text-color);
  }
  
  .table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--table-stripe);
  }
  
  .table-hover tbody tr:hover {
    background-color: var(--table-hover);
  }
  
  /* Form Styles */
  .form-control, .input-group-text {
    background-color: var(--input-bg);
    border-color: var(--border-color);
    color: var(--input-text);
  }
  
  .form-control:focus {
    background-color: var(--input-bg);
    border-color: var(--primary-color);
    color: var(--input-text);
    box-shadow: 0 0 0 0.25rem rgba(128, 128, 128, 0.25);
  }
  
  /* Modal Styles */
  .modal-content {
    background-color: var(--modal-bg);
    color: var(--text-color);
  }
  
  .modal-header, .modal-footer {
    border-color: var(--border-color);
  }
  
  /* Badge Styles */
  .badge.bg-success {
    background-color: #198754 !important;
  }
  
  .badge.bg-danger {
    background-color: #dc3545 !important;
  }
  
  /* Footer Styles */
  footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 2rem 0;
    text-align: center;
  }
  
  /* Logo Styles */
  .navbar-logo {
    height: 35px;
    margin-right: 10px;
  }
  
  /* Login Form Styles */
  .form-signin {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    margin: auto;
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 10px 30px var(--shadow);
  }
  
  .form-signin .form-floating:focus-within {
    z-index: 2;
  }
  
  .form-signin input[type="text"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
    background-color: var(--input-bg);
    color: var(--input-text);
  }
  
  .form-signin input[type="password"] {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    background-color: var(--input-bg);
    color: var(--input-text);
  }
  
  .logo {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
  }
  
  /* Error Pages */
  .error-container {
    text-align: center;
    max-width: 500px;
    padding: 2rem;
  }
  
  .error-code {
    font-size: 8rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1;
    background: linear-gradient(45deg, #212529, #6c757d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  
  /* Theme Switch */
  .theme-switch-wrapper {
    display: flex;
    align-items: center;
    margin-left: 1rem;
    margin-top: 8px;
  }
  
  .theme-switch-wrapper .fa-sun {
    color: var(--text-color);
    margin-right: 0.5rem;
  }
  
  .theme-switch-wrapper .fa-moon {
    color: var(--text-color);
    margin-left: 0.5rem;
  }
  
  .theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 48px;
  }
  
  .theme-switch input {
    display: none;
  }
  
  .slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    border-radius: 34px;
  }
  
  .slider:before {
    background-color: white;
    bottom: 4px;
    content: "";
    height: 16px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 16px;
    border-radius: 50%;
  }
  
  input:checked + .slider {
    background-color: var(--primary-color);
  }
  
  input:checked + .slider:before {
    transform: translateX(24px);
  }