/* principal.css - Estilos para la sección "¿Por qué elegirnos?" */

.principal {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 40px;
}

.principal-title {
    text-align: center;
    font-size: 2.8rem;
    color: #064B90;
    margin-bottom: 60px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(3, 147, 213, 0.2);
    position: relative;
    padding-bottom: 20px;
}

.principal-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 5px;
    background: linear-gradient(90deg, #12B3E3 0%, #67C0F0 100%);
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(18, 179, 227, 0.4);
}

.principal-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.principal-card {
    background: #FFFFFF;
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow:
        0 10px 30px rgba(6, 75, 144, 0.15),
        0 0 0 1px rgba(18, 179, 227, 0.1);
    border: 3px solid #9FCDF1;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.principal-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #12B3E3 0%, #67C0F0 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.principal-card:hover {
    transform: translateY(-10px);
    border-color: #12B3E3;
    box-shadow:
        0 15px 40px rgba(18, 179, 227, 0.25),
        0 0 30px rgba(103, 192, 240, 0.3),
        0 0 0 1px #12B3E3;
}

.principal-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(18, 179, 227, 0.1) 0%, rgba(103, 192, 240, 0.15) 100%);
    border-radius: 50%;
    border: 3px solid #12B3E3;
    box-shadow: 0 5px 20px rgba(18, 179, 227, 0.3);
    transition: all 0.4s ease;
}

.principal-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, rgba(18, 179, 227, 0.2) 0%, rgba(103, 192, 240, 0.25) 100%);
    box-shadow: 0 8px 30px rgba(18, 179, 227, 0.4);
}

.card-icon i {
    font-size: 2.5rem;
    color: #12B3E3;
    text-shadow: 0 0 10px rgba(18, 179, 227, 0.4);
}

.card-title {
    text-align: center;
    font-size: 1.8rem;
    color: #064B90;
    margin-bottom: 20px;
    font-weight: 700;
}

.card-description {
    text-align: center;
    font-size: 1.05rem;
    line-height: 1.7;
    color: #070E3C;
    font-weight: 400;
}

.card-description strong {
    color: #064B90;
    font-weight: 700;
}

/* Responsive */
@media (max-width: 1024px) {
    .principal-cards {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
    }

    .principal-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .principal {
        padding: 40px 20px;
    }

    .principal-title {
        font-size: 1.9rem;
        margin-bottom: 40px;
    }

    .principal-cards {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .principal-card {
        padding: 35px 25px;
    }

    .card-title {
        font-size: 1.6rem;
    }

    .card-description {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .principal-title {
        font-size: 1.6rem;
    }

    .card-icon {
        width: 70px;
        height: 70px;
    }

    .card-icon i {
        font-size: 2rem;
    }

    .card-title {
        font-size: 1.4rem;
    }

    .card-description {
        font-size: 0.95rem;
    }
}