/* General Styles */
:root {
    --primary-color: #007BFF;
    --secondary-color: #5865F2;
    --background-color: #f0f2f5;
    --text-color: #333;
    --card-bg: #fff;
    --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.header {
    text-align: center;
    padding: 4rem 2rem 2rem;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 0 0 50px 50px;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Barra de progreso */
.progress-bar-container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.progress-bar-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.progress-bar-background {
    width: 100%;
    height: 20px;
    background-color: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar-fill {
    height: 100%;
    width: 0;
    background-color: var(--primary-color);
    border-radius: 10px;
    transition: width 0.5s ease;
}


/* Main Page Grid */
.course-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
    flex-grow: 1;
}

.course-card {
    text-decoration: none;
    color: var(--text-color);
    background-color: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    width: 100%;
    max-width: 350px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 3px solid transparent;
}

.course-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.course-card.visited {
    border: 3px solid var(--primary-color);
}

.card-content {
    padding: 1.5rem;
}

.card-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.card-content p {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 1rem;
}

.card-tag {
    display: inline-block;
    background-color: #e0e7ff;
    color: var(--secondary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Course Page Styles */
.back-link {
    display: inline-block;
    text-decoration: none;
    color: #fff;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    transition: background-color 0.3s ease;
}

.back-link:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

.course-content {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 2rem;
    flex-grow: 1;
}

.content-section {
    background-color: var(--card-bg);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
}

.content-section h2 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
}

/* Formulario de Quiz */
.quiz-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.question-group {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid #ddd;
    transition: box-shadow 0.3s ease;
}

.question-group:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.question {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.question-group label {
    display: block;
    padding: 0.7rem;
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.question-group label:hover {
    background-color: #f5f5f5;
    border-color: var(--primary-color);
}

.question-group input[type="radio"] {
    margin-right: 10px;
    accent-color: var(--primary-color);
}

.submit-button {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    align-self: flex-start;
}

.submit-button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

/* Feedback de Quiz */
.feedback {
    margin-top: 10px;
    padding: 10px;
    border-radius: 8px;
    font-weight: 600;
}

.feedback .emoji {
    margin-right: 8px;
}

.feedback p {
    margin: 0;
}

#quiz-results h3 {
    margin-top: 2rem;
    color: var(--primary-color);
    font-weight: 700;
}

/* Footer */
.footer {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--primary-color);
    color: #fff;
    font-size: 0.9rem;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .course-grid {
        gap: 1rem;
        padding: 1rem;
    }

    .course-card {
        max-width: 100%;
    }

    .course-content {
        padding: 0 1rem;
    }
}

/* Estilos para el botón de reiniciar */
.reset-button {
    background-color: #dc3545; /* Color rojo para destacar */
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    margin-top: 1rem; /* Espacio superior */
    display: block; /* Para que ocupe su propia línea */
    margin-left: auto;
    margin-right: auto;
}

.reset-button:hover {
    background-color: #c82333;
    transform: translateY(-2px);
}

/* Estilos para la información del usuario */
.user-info {
    position: absolute;
    top: 2rem;
    right: 2rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1rem;
    font-weight: 600;
}

.logout-button {
    background-color: #dc3545;
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.logout-button:hover {
    background-color: #c82333;
}

/* Ajustes para el header en páginas de curso */
body:not(#index-page) .header {
    text-align: left;
    padding-top: 2rem;
    padding-bottom: 2rem;
    position: relative;
}

body:not(#index-page) .header h1 {
    margin-top: 1rem;
}