.no-content-list {
     list-style: none;
 }

 :root {
     --color-primary: #004d99;
     --color-secondary: #007bff;
     --color-text: #1f2937;
     --color-bg: #f8f9fa;
     --color-accent: #3b82f6;
 }

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

 body {
     font-family: 'Montserrat', 'Inter', sans-serif;
     background-color: var(--color-bg);
     color: var(--color-text);
     line-height: 1.6;
     background-color: var(--color-bg) !important;
 }

 .navbar {
     display: flex;
     justify-content: space-between;
     align-items: center;
     background-color: var(--color-primary);
     color: white;
     padding: 1rem 1.5rem;
     box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
 }

 .navbar-brand {
     font-size: 1.25rem;
     font-weight: 800;
 }

 .navbar-links {
     display: flex;
     gap: 1.5rem;
 }

 .navbar-links a {
     color: white;
     text-decoration: none;
     font-weight: 600;
     padding: 0.25rem 0;
     transition: opacity 0.2s;
 }

 .navbar-links a:hover {
     opacity: 0.8;
 }

 .navbar-auth {
     display: flex;
     gap: 1rem;
     align-items: center;
 }

 .btn-access {
     background-color: white;
     color: var(--color-secondary);
     padding: 0.5rem 1rem;
     border-radius: 0.375rem;
     font-weight: 600;
     text-decoration: none;
     transition: background-color 0.2s, color 0.2s;
 }

 .btn-access:hover {
     background-color: #f0f0f0;
 }

 .header-section {
     background-color: white;
     padding: 2rem 1.5rem;
     padding-top: 40px;
     border-bottom: 1px solid #e5e7eb;
 }

 .header-content {
     max-width: 1200px;
     margin: 0 auto;
     display: flex;
     justify-content: space-between;
     align-items: center;
     flex-wrap: wrap;
 }

 .course-title {
     font-size: 1.875rem;
     font-weight: 800;
     color: var(--color-text);
     margin-bottom: 0.5rem;
 }

 .course-actions {
     display: flex;
     gap: 1rem;
     margin-top: 1rem;
 }

 .btn-extra-activities {
     padding: 0.5rem 1rem;
     border-radius: 0.375rem;
     font-weight: 600;
     text-decoration: none;
     transition: background-color 0.2s;
     border: 1px solid transparent;
 }

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

 .btn-outline:hover {
     background-color: #f3f4f6;
 }

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

 .btn-primary-extra:hover {
     background-color: #003a6b;
 }

 .main-container {
     max-width: 1200px;
     margin: 0 auto;
     padding: 2rem 1.5rem;
 }

 .section-title {
     font-size: 1.5rem;
     font-weight: 800;
     color: var(--color-text);
     margin-top: 2rem;
     margin-bottom: 1rem;
     padding-bottom: 0.5rem;
     border-bottom: 2px solid #e5e7eb;
 }

 .content-panel {
     background-color: white;
     padding: 1.5rem;
     border-radius: 0.5rem;
     box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
 }

 .content-panel h2 {
     font-size: 1.25rem;
     font-weight: 700;
     color: var(--color-secondary);
     margin-bottom: 1rem;
 }

 .content-panel p {
     margin-bottom: 1rem;
     color: #4b5563;
 }

 .content-panel strong {
     color: var(--color-text);
 }

 .content-panel .test-topic {
     color: #dc2626;
     font-weight: 600;
 }

 .module-item {
     background-color: white;
     margin-bottom: 0.75rem;
     border-radius: 0.5rem;
     box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
     overflow: hidden;
     border: 1px solid #e5e7eb;
 }

 .module-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
     padding: 1rem 1.5rem;
     font-weight: 600;
     color: var(--color-text);
     cursor: pointer;
     transition: background-color 0.2s;
 }

 .module-header:hover {
     background-color: #f3f4f6;
 }

 .module-header::after {
     content: '>';
     transform: rotate(90deg);
     transition: transform 0.3s;
     font-weight: 800;
     color: var(--color-secondary);
 }

 .module-item.active .module-header::after {
     transform: rotate(270deg);
 }

 .module-content {
     padding: 0 1.5rem;
     max-height: 0;
     overflow: hidden;
     transition: max-height 0.3s ease-out, padding 0.3s ease-out;
     background-color: #f9fafb;
 }

 .module-item.active .module-content {
     max-height: 500px;
     padding: 1rem 1.5rem;
 }

 .module-content ul {
     list-style: none;
     padding: 0;
     margin: 0;
 }

 .module-content li {
     padding: 0.5rem 0;
     border-bottom: 1px dashed #e5e7eb;
     color: #4b5563;
 }

 .module-content li:last-child {
     border-bottom: none;
 }

 .module-content li strong {
     color: var(--color-text);
 }

 @media (min-width: 768px) {
     .header-content {
         justify-content: space-between;
     }

     .course-actions {
         margin-top: 0;
     }
 }

 @media (max-width: 767px) {
     .navbar {
         align-items: flex-start;
         gap: 0.5rem;
     }

     .navbar-links,
     .navbar-auth {
         display: none;
     }

     .header-content {
         flex-direction: column;
         align-items: flex-start;
     }

     .course-actions {
         width: 100%;
         justify-content: stretch;
     }

     .btn-extra-activities {
         flex-grow: 1;
         text-align: center;
     }
 }

 .main-container {
     min-height: 90vh;
 }

 .module-content li span {
     font-weight: 600;
     color: #1f2937
 }

 .module-content a {
     color: #4b5563;
     text-decoration: none;
     display: inline-block;
     width: 60%;
 }

#header-content-extra-activities{
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 0;
    padding-bottom: 0;
}