body {
    font-family: 'Open Sans', sans-serif;
    background-color: #f4f7fa;
    color: #333;
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

#password-prompt {
    max-width: 400px;
    margin: 50px auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    text-align: center;
}

#password-prompt h2 {
    font-size: 1.5rem;
    color: #1a73e8;
    margin-bottom: 10px;
}

#password-prompt input {
    width: 80%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

#password-prompt button {
    background-color: #1a73e8;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
}

#password-prompt button:hover {
    background-color: #1557b0;
}

#password-prompt .error-message {
    color: #dc3545;
    font-size: 0.9rem;
    margin-top: 10px;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #e8f0fe;
    border-radius: 8px;
    margin-bottom: 20px;
}

h1 {
    font-size: 2rem;
    color: #1a73e8;
    margin: 0;
}

h2 {
    font-size: 1.5rem;
    color: #1a73e8;
    margin-bottom: 10px;
}

h3 {
    font-size: 1.3rem;
    color: #1a73e8;
    margin: 15px 0 10px;
}

h4 {
    font-size: 1.1rem;
    color: #333;
    margin: 10px 0;
}

main {
    max-width: 800px;
    margin: 0 auto;
}

section {
    margin-bottom: 30px;
}

.course-card {
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
    transition: transform 0.2s ease;
}

.course-card:hover {
    transform: translateY(-3px);
}

.course-card h3 {
    margin: 0 0 10px;
    font-size: 1.2rem;
    color: #333;
}

.progress-bar {
    background-color: #e0e0e0;
    border-radius: 5px;
    height: 10px;
    margin: 10px 0;
}

.progress-fill {
    background-color: #1a73e8;
    height: 100%;
    border-radius: 5px;
    transition: width 0.3s ease;
}

.course-info p {
    margin: 5px 0;
    font-size: 0.9rem;
}

.course-info .status-completada {
    color: #28a745;
    font-weight: 600;
}

.course-info .status-en-proceso {
    color: #ffc107;
    font-weight: 600;
}

.course-info .status-pendiente {
    color: #dc3545;
    font-weight: 600;
}

#summary p {
    font-size: 1rem;
    margin: 5px 0;
}

#study-plan table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

#study-plan th, #study-plan td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

#study-plan th {
    background-color: #e8f0fe;
    color: #1a73e8;
}

#study-plan ul {
    padding-left: 20px;
}

#study-plan a {
    color: #1a73e8;
    text-decoration: none;
}

#study-plan a:hover {
    text-decoration: underline;
}

#links ul {
    list-style: none;
    padding: 0;
}

#links li {
    margin: 10px 0;
}

#links a {
    color: #1a73e8;
    text-decoration: none;
    font-weight: 600;
}

#links a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    margin-top: 30px;
    font-size: 0.9rem;
    color: #666;
}

@media (max-width: 600px) {
    h1 {
        font-size: 1.5rem;
    }
    h2 {
        font-size: 1.2rem;
    }
    h3 {
        font-size: 1.1rem;
    }
    h4 {
        font-size: 1rem;
    }
    .course-card {
        padding: 10px;
    }
    #study-plan table {
        font-size: 0.9rem;
    }
    #password-prompt {
        margin: 20px;
        padding: 15px;
    }
}