:root {
        /* Cores principais - Padrão (Azul Profissional) */
        --primary-color: #2c3e50;
        --secondary-color: #bd2312;
        --accent-color: #3498db;
        --hover-color: #2980b9;
        --active-color: #1abc9c;
        --danger-color: #e74c3c;
        --success-color: #2ecc71;
        --warning-color: #f39c12;

        /* Cores de texto */
        --text-light: #ecf0f1;
        --text-dark: #2c3e50;
        --text-muted: #95a5a6;

        /* Outras variáveis */
        --header-height: 60px;
        --sidebar-width: 280px;
        --sidebar-collapsed-width: 80px;
        --transition-speed: 0.3s;
        --border-radius: 6px;
        --box-shadow: 0 4px 12px rgba(223, 0, 0, 0.1);
      }

      /* Estilos base */
      body {
        font-family: "Roboto", sans-serif;
        background-color: #f8f9fa;
        color: var(--text-dark);
        padding-top: var(--header-height);
        min-height: 100vh;
        transition: all var(--transition-speed) ease;
      }

      h1,
      h2,
      h3,
      h4,
      h5,
      h6 {
        font-family: "Poppins", sans-serif;
        font-weight: 600;
      }

      /* Layout principal */
      .app-container {
        display: flex;
        min-height: calc(100vh - var(--header-height));
      }

      /* Top Navbar */
      .top-navbar {
        background-color: var(--primary-color);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        height: var(--header-height);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1030;
        padding: 0.5rem 1rem;
      }

      .navbar-brand img {
        height: 40px;
        transition: transform 0.3s ease;
      }

      .navbar-brand:hover img {
        transform: scale(1.05);
      }

      .nav-link {
        color: var(--text-light);
        font-weight: 500;
        padding: 0.5rem 1rem;
        position: relative;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
      }

      .nav-link:hover {
        color: var(--active-color);
      }

      .nav-link i {
        margin-right: 0.5rem;
        font-size: 1.1rem;
      }

      .dropdown-menu {
        background-color: var(--secondary-color);
        border: none;
        box-shadow: var(--box-shadow);
      }

      .dropdown-item {
        color: var(--text-light);
        padding: 0.5rem 1.5rem;
        transition: all 0.2s ease;
      }

      .dropdown-item:hover {
        background-color: var(--accent-color);
        color: white;
      }

      .search-bar {
        max-width: 300px;
      }

      .search-bar .form-control {
        border-radius: 50px;
        padding-left: 1.5rem;
      }

      .user-avatar {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        background-color: var(--accent-color);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-weight: bold;
        margin-right: 0.5rem;
      }

      /* Sidebar */
      .sidebar {
        width: var(--sidebar-width);
        background: var(--primary-color);
        color: var(--text-light);
        transition: all var(--transition-speed) ease;
        height: calc(100vh - var(--header-height));
        position: fixed;
        top: var(--header-height);
        left: 0;
        box-shadow: 2px 0 10px rgba(7, 226, 29, 0.1);
        z-index: 1020;
        overflow-y: auto;
      }

      .sidebar-header {
        padding: 1.25rem 1.5rem;
        background: var(--secondary-color);
        display: flex;
        justify-content: space-between;
        align-items: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      }

      .sidebar-title {
        margin: 0;
        font-size: 1.25rem;
        font-weight: 600;
        color: white;
      }

      .toggle-btn {
        background: none;
        border: none;
        color: white;
        font-size: 1.25rem;
        cursor: pointer;
        transition: all 0.2s;
        padding: 0.25rem;
      }

      .toggle-btn:hover {
        color: var(--active-color);
      }

      .sidebar-nav {
        padding: 1rem 0;
        list-style: none;
      }

      .nav-item {
        position: relative;
      }

      .nav-link {
        display: flex;
        align-items: center;
        padding: 0.75rem 1.5rem;
        color: var(--text-light);
        text-decoration: none;
        transition: all 0.2s;
        border-left: 3px solid transparent;
      }

      .sidebar .nav-link {
        padding: 0.75rem 1.5rem;
      }

      .sidebar .nav-link:hover,
      .sidebar .nav-link:focus {
        background: var(--secondary-color);
        border-left: 3px solid var(--active-color);
      }

      .sidebar .nav-link.active {
        background: var(--secondary-color);
        border-left: 3px solid var(--active-color);
        font-weight: 500;
      }

      .nav-icon {
        margin-right: 0.75rem;
        font-size: 1.1rem;
        width: 20px;
        text-align: center;
      }

      .nav-text {
        flex-grow: 1;
      }

      .nav-caret {
        transition: transform 0.3s;
      }

      .nav-caret.rotated {
        transform: rotate(90deg);
      }

      .badge-notification {
        background-color: var(--danger-color);
        color: white;
        border-radius: 50%;
        width: 20px;
        height: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.7rem;
        margin-left: auto;
      }

      .divider {/*Linhas divisórias do menu vertical*/
        height: 1px;
        background: rgba(251, 5, 5, 0.973);
        margin: 0.5rem 1.5rem;
      }

      /* Submenu */
      .submenu {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
        background: var(--secondary-color);
        list-style: none;
        padding-left: 0;
        margin: 0;
      }

      .submenu.show {
        max-height: 500px;
      }

      .submenu .nav-link {
        padding-left: 3.5rem;
        padding-top: 0.6rem;
        padding-bottom: 0.6rem;
        border-left: none;
        font-size: 0.95rem;
      }

      .submenu .nav-link:hover {
        background: rgba(230, 3, 3, 0.1);
      }

      /* Conteúdo Principal */
      .main-content {
        flex-grow: 1;
        margin-left: var(--sidebar-width);
        padding: 2rem;
        transition: all var(--transition-speed) ease;
        min-height: calc(100vh - var(--header-height));
      }

      /* Cards */
      .card {
        border: none;
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        height: 100%;
      }

      .card:hover {
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
      }

      .card-body {
        padding: 1.5rem;
      }

      .card-title {
        font-weight: 600;
        margin-bottom: 1rem;
        color: var(--primary-color);
      }

      .card-title i {
        margin-right: 0.5rem;
        color: var(--accent-color);
      }

      .card-text {
        color: var(--text-muted);
        margin-bottom: 1.5rem;
      }

      .btn-primary {
        background-color: var(--accent-color);
        border-color: var(--accent-color);
        border-radius: 50px;
        padding: 0.5rem 1.5rem;
        font-weight: 500;
        transition: all 0.3s ease;
      }

      .btn-primary:hover {
        background-color: var(--hover-color);
        border-color: var(--hover-color);
        transform: translateY(-2px);
      }

      /* Footer */
      .footer {
        background-color: var(--primary-color);
        color: var(--text-light);
        padding: 1.5rem;
        text-align: center;
        margin-left: var(--sidebar-width);
        transition: all var(--transition-speed) ease;
      }

      /* Estado colapsado do sidebar */
      body.sidebar-collapsed .sidebar {
        width: var(--sidebar-collapsed-width);
      }

      body.sidebar-collapsed .main-content,
      body.sidebar-collapsed .footer {
        margin-left: var(--sidebar-collapsed-width);
      }

      body.sidebar-collapsed .sidebar-title,
      body.sidebar-collapsed .nav-text,
      body.sidebar-collapsed .nav-caret,
      body.sidebar-collapsed .badge-notification {
        display: none;
      }

      body.sidebar-collapsed .sidebar-header {
        justify-content: center;
      }

      body.sidebar-collapsed .toggle-btn i {
        transform: rotate(180deg);
      }

      body.sidebar-collapsed .nav-item {
        text-align: center;
      }

      body.sidebar-collapsed .submenu {
        display: none !important;
      }

      body.sidebar-collapsed .nav-link {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
      }

      body.sidebar-collapsed .nav-icon {
        margin-right: 0;
        font-size: 1.3rem;
      }

      body.sidebar-collapsed .divider {
        margin: 0.5rem 0;
      }

      /* Menu Mobile */
      .mobile-menu-btn {
        display: none;
        position: fixed;
        bottom: 20px;
        left: 20px;
        z-index: 1040;
        background-color: var(--accent-color);
        color: white;
        border: none;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        font-size: 1.5rem;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        transition: all 0.3s ease;
      }

      .mobile-menu-btn:hover {
        background-color: var(--hover-color);
        transform: scale(1.1);
      }

      /* Responsividade */
      @media (max-width: 992px) {
        .sidebar {
          transform: translateX(-100%);
          width: 280px;
        }

        .sidebar.show {
          transform: translateX(0);
        }

        /* Desativar o modo colapsado em mobile */
        body.sidebar-collapsed .sidebar {
          transform: translateX(-100%);
          width: 280px;
        }

        body.sidebar-collapsed .sidebar.show {
          transform: translateX(0);
          width: 280px;
        }

        .main-content,
        .footer {
          margin-left: 0 !important;
        }

        .mobile-menu-btn {
          display: flex;
          align-items: center;
          justify-content: center;
        }

        /* Esconder o botão de toggle em mobile */
        .toggle-btn {
          display: none;
        }

        /* Ajustes no conteúdo para mobile */
        .main-content {
          padding: 1.5rem;
        }

        .card {
          margin-bottom: 1.5rem;
        }

        .search-bar {
          max-width: 100%;
          margin-bottom: 1rem;
        }
      }

      @media (max-width: 768px) {
        .main-content {
          padding: 1rem;
        }

        .card-body {
          padding: 1.25rem;
        }
      }

      /* Animações */
      @keyframes fadeIn {
        from {
          opacity: 0;
          transform: translateY(20px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      .animate-fadeIn {
        animation: fadeIn 0.6s ease-out forwards;
      }

      /* Efeito de loading */
      .loading-spinner {
        display: inline-block;
        width: 2rem;
        height: 2rem;
        border: 0.25em solid rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        border-top-color: white;
        animation: spin 1s ease-in-out infinite;
      }

      @keyframes spin {
        to {
          transform: rotate(360deg);
        }
      }

      /* Estilos para a seção de depoimentos */
      .testimonial-section {
        background-color: #f8f9fa;
        padding: 5rem 0;
        margin-top: 3rem;
      }

      .testimonial-section .section-header {
        text-align: center;
        margin-bottom: 3rem;
      }

      .testimonial-section .section-header h2 {
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 1rem;
      }

      .testimonial-section .section-header span {
        color: var(--accent-color);
        font-size: 1.1rem;
        display: block;
        margin-bottom: 0.5rem;
      }

      .testimonial-carousel-wrapper {
        max-width: 900px;
        margin: 0 auto;
        position: relative;
      }

      .testimonial-card {
        background-color: white;
        border-left: 4px solid var(--accent-color);
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        padding: 2.5rem;
        margin: 0 1rem;
        transition: all 0.3s ease;
        text-align: center;
      }

      .testimonial-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
      }

      .testimonial-img {
        margin-bottom: 1.5rem;
      }

      .testimonial-img img {
        width: 100px;
        height: 100px;
        border-radius: 50%;
        border: 3px solid var(--accent-color);
        object-fit: cover;
        margin: 0 auto;
      }

      .quote-icon {
        margin-bottom: 1.5rem;
      }

      .quote-icon i {
        color: var(--accent-color);
        font-size: 2.5rem;
        opacity: 0.7;
      }

      .testimonial-text {
        font-size: 1.1rem;
        line-height: 1.8;
        color: var(--text-muted);
        margin-bottom: 1.5rem;
        font-style: italic;
      }

      .client-info h5 {
        color: var(--primary-color);
        font-weight: 600;
        margin-bottom: 0.3rem;
      }

      .client-info p {
        color: var(--text-muted);
        margin-bottom: 0;
      }

      /* Controles do carrossel */
      .carousel-control-prev,
      .carousel-control-next {
        width: 45px;
        height: 45px;
        background-color: var(--accent-color);
        border-radius: 50%;
        top: 50%;
        transform: translateY(-50%);
        opacity: 1;
        transition: all 0.3s ease;
      }

      .carousel-control-prev {
        left: -50px;
      }

      .carousel-control-next {
        right: -50px;
      }

      .carousel-control-prev:hover,
      .carousel-control-next:hover {
        background-color: var(--hover-color);
        transform: translateY(-50%) scale(1.1);
      }

      .carousel-control-prev-icon,
      .carousel-control-next-icon {
        width: 1.5rem;
        height: 1.5rem;
      }

      @media (max-width: 992px) {
        .testimonial-section {
          padding: 4rem 0;
        }

        .carousel-control-prev {
          left: -30px;
        }

        .carousel-control-next {
          right: -30px;
        }
      }

      @media (max-width: 768px) {
        .testimonial-section {
          padding: 3rem 0;
        }

        .testimonial-section .section-header h2 {
          font-size: 2rem;
        }

        .testimonial-card {
          padding: 2rem;
        }

        .carousel-control-prev,
        .carousel-control-next {
          width: 35px;
          height: 35px;
        }

        .carousel-control-prev {
          left: -15px;
        }

        .carousel-control-next {
          right: -15px;
        }
      }

      @media (max-width: 576px) {
        .testimonial-card {
          padding: 1.5rem;
        }

        .testimonial-text {
          font-size: 1rem;
        }
      }

      /* Seletor de temas */
      .theme-selector {
        position: relative;
        margin-right: 1rem;
      }

      .theme-selector .btn {
        color: var(--text-light);
        border: 1px solid rgba(255, 255, 255, 0.2);
        padding: 0.375rem 0.75rem;
      }

      .theme-selector .btn:hover {
        background-color: rgba(255, 255, 255, 0.1);
      }

      .theme-selector .dropdown-menu {
        min-width: 220px;
        padding: 0.5rem;
      }

      .theme-option {
        display: flex;
        align-items: center;
        padding: 0.5rem 1rem;
        cursor: pointer;
        border-radius: 4px;
        transition: all 0.2s;
      }

      .theme-option:hover {
        background-color: rgba(255, 255, 255, 0.1);
      }

      .theme-color {
        width: 20px;
        height: 20px;
        border-radius: 50%;
        margin-right: 10px;
        border: 2px solid rgba(255, 255, 255, 0.3);
      }

      .theme-name {
        font-size: 0.9rem;
      }

      .theme-selected {
        display: flex;
        align-items: center;
      }

      .theme-selected-color {
        width: 16px;
        height: 16px;
        border-radius: 50%;
        margin-right: 8px;
        border: 1px solid rgba(255, 255, 255, 0.3);
      }

      :root {
        --primary-color: #2c3e50;
        --secondary-color: #34495e;
        --accent-color: #3498db;
        --hover-color: #2980b9;
        --text-light: #ecf0f1;
        --text-dark: #2c3e50;
      }

      body {
        font-family: "Roboto", sans-serif;
        background-color: #f8f9fa;
        color: var(--text-dark);
      }

      h1,
      h2,
      h3,
      h4,
      h5,
      h6 {
        font-family: "Poppins", sans-serif;
        font-weight: 600;
      }

      .card {
        border: none;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
      }

      .card-header {
        background-color: var(--primary-color);
        color: white;
        border-radius: 8px 8px 0 0 !important;
      }

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

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

      /* DataTables Custom */
      #tabela_geral_aluno {
        margin-top: 0 !important;
      }

      #tabela_geral_aluno thead th {
        background-color: var(--secondary-color);
        color: white;
        border-bottom: none;
      }

      #tabela_geral_aluno tbody tr {
        transition: all 0.2s;
      }

      #tabela_geral_aluno tbody tr:hover {
        background-color: rgba(52, 152, 219, 0.1);
        cursor: pointer;
      }

      .dataTables_length select {
        border-radius: 4px;
        padding: 4px 8px;
      }

      .dataTables_filter input {
        border-radius: 4px;
        padding: 4px 8px;
        border: 1px solid #ddd;
      }

      .dataTables_info {
        padding-top: 12px !important;
      }

      .dataTables_paginate .paginate_button {
        border-radius: 4px !important;
        margin: 0 2px;
      }

      .dataTables_paginate .paginate_button.current {
        background: var(--accent-color) !important;
        border-color: var(--accent-color) !important;
      }

      /* Badges para status */
      .badge-ativo {
        background-color: #28a745;
      }

      .badge-inativo {
        background-color: #dc3545;
      }

      /* Modal de detalhes */
      .modal-aluno-img {
        width: 120px;
        height: 120px;
        border-radius: 50%;
        object-fit: cover;
        border: 4px solid var(--accent-color);
        margin: 0 auto;
        display: block;
      }

      .info-label {
        font-weight: 500;
        color: var(--primary-color);
      }

      .info-value {
        margin-bottom: 15px;
      }