:root {
      --primary-color: #CBA55B;
      --primary-light: #E6D5AA;
      --primary-dark: #A8843A;
      --secondary-color: #55888b;
      --secondary-dark: #2E4057;
      --background-light: #F8F9FA;
      --background-dark: #2C3E50;
      --white: #FFFFFF;
      --gray-light: #E0E0E0;
      --gray-dark: #555555;
      --text-color: #2C3E50;
      --text-muted: #7F8C8D;
    }

    body {
      font-family: 'Cairo', sans-serif;
      background-color: var(--background-light);
      margin: 0;
      color: var(--text-color);
    }

    /* Sidebar */
    .sidebar {
      background-color: var(--white);
      color: var(--text-color);
      height: 100vh;
      box-shadow: 0 4px 20px rgba(0,0,0,0.08);
      padding-top: 20px;
      border-radius: 0 15px 15px 0;
      overflow-y: auto;
      transition: all 0.3s ease-in-out;
    }
    .sidebar a {
      color: var(--text-color);
      font-weight: 500;
      border-radius: 12px;
      padding: 12px 16px;
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      transition: all 0.3s ease;
    }
    .sidebar a:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      transform: translateX(-5px);
    }
    .sidebar a.active {
      background: var(--primary-color);
      color: var(--white);
      font-weight: bold;
    }
    .sidebar a i {
      font-size: 1.2rem;
      color: var(--secondary-dark);
      transition: transform 0.3s, color 0.3s;
    }
    .sidebar a.active i,
    .sidebar a:hover i {
      color: var(--white);
      transform: scale(1.2) rotate(-5deg);
    }

    /* Logo */
    .logo-box {
      width: 90px;
      height: 90px;
      border-radius: 20px;
      overflow: hidden;
      margin: auto;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }
    .logo-box img {
      width: 80%;
      height: auto;
      object-fit: contain;
    }
    .sidebar h4 {
      color: var(--primary-dark);
      margin-top: 10px;
      font-weight: bold;
      text-align: center;
    }

    /* Topbar */
    .topbar {
      background: var(--white);
      box-shadow: 0 2px 10px rgba(0,0,0,0.08);
      padding: 12px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      position: sticky;
      top: 0;
      z-index: 1000;
      border-radius: 0 0 15px 15px;
    }
    .topbar h4 {
      color: var(--primary-dark);
      font-weight: bold;
      margin: 0;
    }

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

    .user-btn {
      background-color: var(--secondary-color);
      border: none;
      border-radius: 14px;
      padding: 6px 12px;
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 500;
      color: var(--white);
      box-shadow: 0 2px 6px rgba(0,0,0,0.08);
      transition: 0.3s;
    }
    .user-btn:hover {
      background-color: var(--secondary-dark);
      color: var(--primary-light);
    }

   
    /* Responsive */
    @media (max-width: 767px) {
      .hamburger-btn { display: block; }
      .sidebar {
        position: fixed;
        top: 0;
        right: 0;
        width: 260px;
        transform: translateX(100%);
        z-index: 1050;
      }
      .sidebar.show { transform: translateX(0); }
      .close-sidebar {
        display: block;
        text-align: left;
        padding: 12px;
        font-size: 22px;
        cursor: pointer;
        color: var(--text-color);
      }
      .topbar h4 { font-size: 1.1rem; }
      .user-btn { font-size: 0.85rem; padding: 4px 8px; gap: 6px; }
      .user-btn img { width: 26px; height: 26px; }
      .stats-card { flex-direction: column; text-align: center; gap: 10px; }
    }