.exercise-description {
    background: var(--color-card-bg);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.exercise-description h2 {
    color: var(--color-primary-text);
    margin-top: 0;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 1rem;
}

.problem-statement {
    margin-bottom: 2rem;
}

.explanation {
    margin-bottom: 2rem;
}

.solution-diagram {
    background: white;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 2rem;
}

.solution-diagram img {
    max-width: 100%;
    height: auto;
}

.source-code {
    background: var(--color-bg);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 2rem;
    overflow-x: auto;
}

.code-block {
    font-family: monospace;
    white-space: pre;
    color: var(--color-primary-text);
}

.test-section {
    background: var(--color-bg);
    padding: 1rem;
    border-radius: 4px;
}

/* Tablas de prueba */
.test-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: white;
}

.test-table th, .test-table td {
    border: 1px solid var(--color-border);
    padding: 0.5rem;
    text-align: center;
}

.test-table th {
    background: var(--color-bg);
    color: var(--color-primary-text);
}

.test-table tr:nth-child(even) {
    background: #f5f5f5;
}

/* Fórmulas matemáticas */
.formula {
    background: #f8f9fa;
    padding: 20px;
    margin: 20px 0;
    border-left: 4px solid #007bff;
    font-family: 'Courier New', monospace;
}

/* Secciones de contenido */
.test-cases {
    margin-bottom: 2rem;
}

.trace-table {
    margin-bottom: 2rem;
}

.code-implementation {
    margin-bottom: 2rem;
}

.code-implementation pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

.code-implementation code {
    font-family: 'Courier New', Consolas, monospace;
}

.student-activities {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.unit-tests {
    background: #e7f3ff;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}