* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f4f6f9;
    color: #333;
}

.navbar {
    background-color: #1e293b;
    color: #fff;
    padding: 1.5rem;
    text-align: center;
}

.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.grid-modulos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card-modulo {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.card-modulo:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.card-modulo h3 {
    margin-bottom: 0.5rem;
    color: #0f172a;
}

.card-modulo p {
    font-size: 0.9rem;
    color: #64748b;
}