:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --background-color: #ecf0f1;
    --text-color: #34495e;
    --border-radius: 8px;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 30px;
}

.main-content {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.input-section {
    flex: 1;
}

textarea {
    width: 100%;
    height: 300px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    padding: 10px;
    font-family: 'Roboto Mono', monospace;
    resize: vertical;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

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

.btn:hover {
    opacity: 0.9;
}

.comprobaciones {
    width: 300px;
    height: 300px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    padding: 10px;
    overflow-y: auto;
    background-color: white;
    position: relative;
}

.output-section {
    width: 100%;
    height: 300px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    padding: 10px;
    white-space: pre-wrap;
    overflow-y: auto;
    background-color: white;
    position: relative;
}

.literal { color: #1a924c; }
.reservada { color: #b82f8a; }
.funcion { color: #d45e0f; }

@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .comprobaciones {
        width: 100%;
        height: auto;
        max-height: 200px;
    }
}

.watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: rgba(0, 0, 0, 0.1);
    pointer-events: none;
    user-select: none;
}

.fecha-actualizacion {
    position: fixed; /* Fija la posición */
    bottom: 10px; /* Distancia desde el fondo */
    right: 10px; /* Distancia desde la derecha */
    font-size: 12px; /* Tamaño de letra pequeño */
    color: #888; /* Color discreto */
}