:root {
      --primary: #4361ee;
      --secondary: #3f37c9;
      --success: #4cc9f0;
      --info: #4895ef;
      --warning: #f72585;
      --danger: #e63946;
      --light: #f8f9fa;
      --dark: #121212;
      --bg-dark: #1e1e1e;
      --card-dark: #252525;
      --text-dark: #e1e1e1;
      --text-light: #212529;
      --sidebar-width: 250px;
      --sidebar-collapsed: 70px;
      --transition: all 0.3s ease;
    }

    .light-mode {
      --bg-color: #f5f7fb;
      --card-bg: #ffffff;
      --text-color: #212529;
      --sidebar-bg: #ffffff;
      --border-color: #dee2e6;
      --hover-color: #f8f9fa;
      --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    }

    .dark-mode {
      --bg-color: var(--bg-dark);
      --card-bg: var(--card-dark);
      --text-color: var(--text-dark);
      --sidebar-bg: var(--dark);
      --border-color: #444;
      --hover-color: #2a2a2a;
      --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }

    body {
      background-color: var(--bg-color);
      color: var(--text-color);
      transition: var(--transition);
      display: flex;
      min-height: 100vh;
    }
    
    .container {
      display: flex;
      flex: 1;
      min-height: 100vh;
      width: 100%;
    }

    /* Sidebar Styles */
    .sidebar {
      width: var(--sidebar-width);
      background-color: var(--sidebar-bg);
      height: 100vh;
      position: fixed;
      left: 0;
      top: 0;
      overflow-y: auto;
      transition: var(--transition);
      box-shadow: var(--shadow);
      z-index: 1000;
      padding-top: 70px;
    }

    .sidebar.collapsed {
      width: var(--sidebar-collapsed);
    }

    .sidebar-header {
      padding: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-color);
      position: fixed;
      top: 0;
      left: 0;
      width: var(--sidebar-width);
      background-color: var(--sidebar-bg);
      z-index: 1001;
      transition: var(--transition);
    }

    .sidebar.collapsed .sidebar-header {
      width: var(--sidebar-collapsed);
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      overflow: hidden;
      white-space: nowrap;
    }

    .logo-text {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary);
      transition: var(--transition);
    }

    .logo-icon {
      font-size: 1.8rem;
      color: var(--primary);
      min-width: 30px;
    }

    .sidebar-menu {
      padding: 20px 0;
    }

    .sidebar ul {
      list-style: none;
    }

    .sidebar li {
      margin-bottom: 5px;
    }

    .menu-item {
      padding: 12px 20px;
      display: flex;
      align-items: center;
      gap: 15px;
      text-decoration: none;
      color: var(--text-color);
      transition: var(--transition);
      border-left: 4px solid transparent;
    }

    .menu-item:hover, .menu-item.active {
      background-color: var(--hover-color);
      border-left: 4px solid var(--primary);
    }

    .menu-item i {
      width: 20px;
      text-align: center;
    }

    .menu-text {
      transition: var(--transition);
      white-space: nowrap;
    }

    .sidebar.collapsed .menu-text {
      display: none;
    }

    /* Main Content Styles */
    .main-content {
      flex: 1;
      padding: 20px;
      padding-left:80px ;
      margin-left:190px;
      transition: var(--transition);
    }

    .main-content.expanded {
      margin-left:0px;
    }

    /* Header Styles */
    .header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      background-color: var(--card-bg);
      border-radius: 10px;
      margin-bottom: 20px;
      box-shadow: var(--shadow);
      position: relative;
    }

    .school-info {
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .school-logo {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      object-fit: cover;
      display: none;
    }

    .school-name {
      font-weight: 600;
      font-size: 1.1rem;
      color: var(--primary);
      display: none;
    }

    .toggle-sidebar {
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-color);
    }

    .user-profile {
      display: flex;
      align-items: center;
      gap: 15px;
      position: relative;
    }

    .user-info {
      text-align: right;
    }

    .user-name {
      font-weight: 600;
      font-size: 0.9rem;
    }

    .user-role {
      font-size: 0.7rem;
      opacity: 0.7;
    }

    .avatar {
      width: 45px;
      height: 45px;
      border-radius: 50%;
      background-color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: bold;
      font-size: 1.2rem;
      cursor: pointer;
      overflow: hidden;
      border: 2px solid var(--border-color);
    }

    .avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .profile-menu {
      position: absolute;
      top: 100%;
      right: 0;
      background-color: var(--card-bg);
      border-radius: 8px;
      box-shadow: var(--shadow);
      padding: 10px 0;
      width: 200px;
      z-index: 1000;
      display: none;
    }

    .profile-menu.show {
      display: block;
    }

    .profile-menu-item {
      padding: 10px 20px;
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--text-color);
      transition: var(--transition);
    }

    .profile-menu-item:hover {
      background-color: var(--hover-color);
    }

    .theme-toggle {
      background: none;
      border: none;
      font-size: 1.2rem;
      cursor: pointer;
      color: var(--text-color);
      margin-right: 15px;
    }

    /* Modal Styles */
    .modal {
      display: none;
      position: fixed;
      z-index: 2000;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      overflow: auto;
      background-color: rgba(0,0,0,0.5);
    }

    .modal-content {
      background-color: var(--card-bg);
      margin: 5% auto;
      padding: 20px;
      border-radius: 10px;
      box-shadow: var(--shadow);
      width: 90%;
      max-width: 500px;
      position: relative;
    }

    .close {
      color: #aaa;
      float: right;
      font-size: 28px;
      font-weight: bold;
      cursor: pointer;
      position: absolute;
      right: 20px;
      top: 15px;
    }

    .close:hover {
      color: var(--text-color);
    }

    .modal-title {
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--primary);
    }

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

    .form-group label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
    }

    .form-group input {
      width: 100%;
      padding: 10px;
      border: 1px solid var(--border-color);
      border-radius: 5px;
      background-color: var(--bg-color);
      color: var(--text-color);
    }

    .logo-upload {
      display: flex;
      align-items: center;
      gap: 15px;
    }

    .logo-preview {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      border: 2px dashed var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .logo-preview img {
      max-width: 100%;
      max-height: 100%;
      display: none;
    }

    .upload-btn {
      background-color: var(--primary);
      color: white;
      padding: 8px 15px;
      border-radius: 5px;
      cursor: pointer;
      transition: var(--transition);
    }

    .upload-btn:hover {
      background-color: var(--secondary);
    }

    .modal-actions {
      display: flex;
      justify-content: flex-end;
      gap: 10px;
      margin-top: 20px;
    }

    .btn {
      padding: 10px 20px;
      border-radius: 5px;
      cursor: pointer;
      border: none;
      font-weight: 600;
      transition: var(--transition);
    }

    .btn-primary {
      background-color: var(--primary);
      color: white;
    }

    .btn-primary:hover {
      background-color: var(--secondary);
    }

    .btn-secondary {
      background-color: var(--bg-color);
      color: var(--text-color);
    }

    .btn-secondary:hover {
      background-color: var(--hover-color);
    }

    /* Search Styles */
    .search-wrapper {
      position: relative;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 20px;
      margin-bottom: 20px;
      background-color: var(--card-bg);
      border-radius: 10px;
      box-shadow: var(--shadow);
    }

    #searchCategory {
      padding: 8px 12px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
      font-size: 14px;
      background-color: var(--bg-color);
      color: var(--text-color);
    }

    #globalSearch {
      padding: 8px 12px;
      border-radius: 6px;
      width: 230px;
      border: 1px solid var(--border-color);
      font-size: 14px;
      background-color: var(--bg-color);
      color: var(--text-color);
    }

    .results-box {
      position: absolute;
      top: 60px;
      left: 20px;
      width: 350px;
      background-color: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      box-shadow: var(--shadow);
      z-index: 9999;
      display: none;
      max-height: 300px;
      overflow-y: auto;
    }

    .result-item {
      padding: 10px;
      cursor: pointer;
      border-bottom: 1px solid var(--border-color);
    }

    .result-item:hover {
      background-color: var(--hover-color);
    }

    .result-title {
      font-weight: bold;
      color: var(--text-color);
    }

    .result-section {
      font-size: 12px;
      color: var(--text-color);
      opacity: 0.7;
    }

    /* Fee Section Styles */
    .fee-section {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 30px;
    }
    
    .fee-form {
      background: var(--card-bg);
      padding: 20px;
      border-radius: 10px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border-color);
    }
    
    .report {
      background: var(--card-bg);
      padding: 20px;
      border-radius: 10px;
      box-shadow: var(--shadow);
      border: 1px solid var(--border-color);
    }
    
    .form-group {
      margin-bottom: 15px;
    }
    
    .form-group label {
      display: block;
      margin-bottom: 5px;
      font-weight: 500;
      color: var(--text-color);
    }
    
    .form-group input,
    .form-group select {
      width: 100%;
      padding: 10px;
      border-radius: 5px;
      border: 1px solid var(--border-color);
      background: var(--bg-color);
      color: var(--text-color);
    }
    
    .action-buttons {
      display: flex;
      gap: 10px;
      margin-top: 20px;
    }
    
    .action-buttons button {
      padding: 10px 15px;
      border-radius: 5px;
      border: none;
      cursor: pointer;
      font-weight: 500;
      transition: var(--transition);
      display: flex;
      align-items: center;
      gap: 5px;
    }
    
    .save-btn {
      background: var(--primary);
      color: white;
    }
    
    .save-btn:hover {
      background: var(--secondary);
    }
    
    .add-btn {
      background: var(--success);
      color: white;
    }
    
    .add-btn:hover {
      opacity: 0.9;
    }
    
    .download-btn {
      background: var(--warning);
      color: white;
    }
    
    .download-btn:hover {
      opacity: 0.9;
    }

    .category-cell {
      font-weight: bold;
      color: var(--primary);
      background-color: rgba(67, 97, 238, 0.1) !important;
    }

    /* Table Styles */
    .table-container {
      overflow-x: auto;
      margin-top: 15px;
    }

    .records-table {
      width: 100%;
      border-collapse: collapse;
      border-radius: 8px;
      overflow: hidden;
    }

    .records-table th,
    .records-table td {
      padding: 12px 15px;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
    }

    .records-table th {
      background-color: rgba(67, 97, 238, 0.1);
      color: var(--primary);
      font-weight: 600;
    }

    .records-table tr:hover {
      background-color: var(--hover-color);
    }

    /* Notification */
    .notification {
      position: fixed;
      top: 20px;
      right: 20px;
      padding: 15px 20px;
      border-radius: 5px;
      color: white;
      z-index: 10000;
      font-weight: 500;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }
    
    .notification.error {
      background: #e63946;
    }
    
    .notification.warning {
      background: #ff9f43;
    }
    
    .notification.success {
      background: #3abf8c;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .fee-section {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .sidebar {
        width: var(--sidebar-collapsed);
        transform: translateX(-100%);
        left: -100%;
        position: fixed;
      }
      .sidebar.show {
        transform: translateX(100%);
        left: 0;
      }
      .sidebar .menu-text {
        display: none;
      }
      .main-content {
        margin-left: 0;
        width: 100%;
        padding: 10px;
      }
      
      .school-info {
        position: static;
        transform: none;
        margin: 0 auto;
        justify-content: center;
        width: 100%;
        order: 3;
        margin-top: 10px;
      }
      
      .header {
        flex-wrap: wrap;
      }

      .search-wrapper {
        flex-direction: column;
        align-items: stretch;
      }

      #globalSearch {
        width: 100%;
      }

      .results-box {
        width: calc(100% - 40px);
      }

      .action-buttons {
        flex-direction: column;
      }
    }

    @media (max-width: 576px) {
      .header {
        flex-direction: column;
        gap: 15px;
      }
      .user-profile {
        width: 100%;
        justify-content: center;
      }
    }