/* Tipografía y Variables (Palette basada en el diseño de Ing 360) */
:root {
    --primary-yellow: #f5b922;
    /* Amarillo Energía */
    --primary-hover: #dfa61e;

    --dark-blue: #0b223d;
    /* Hero / Navbar top */
    --darker-blue: #071526;
    /* ¿Por qué elegirnos? */
    --medium-blue: #1c3c66;
    /* Detalles */

    --text-dark: #2c3e50;
    --text-light: #5f748d;
    --white: #ffffff;
    --light-gray: #f2f6f9;
    /* Fondo de servicios */

    --transition: all 0.3s ease;

    /* Colores Cajas Servicios (Inspirados en la imagen 2) */
    --card-white: #ffffff;
    --card-yellow: #fff3ce;
    --card-blue: #234c7a;
    --card-dark: #122845;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-family: 'Inter', sans-serif;
}

body {
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

/* Clases Útiles */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-padding {
    padding: 5rem 0;
}

.text-center {
    text-align: center;
}

.text-white {
    color: var(--white);
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-5 {
    margin-top: 3rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

/* Botones */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    font-weight: 600;
    border-radius: 4px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--primary-yellow);
    color: var(--dark-blue);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 185, 34, 0.4);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--white);
    color: var(--white);
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--dark-blue);
}

.btn-outline-dark {
    background-color: transparent;
    border-color: var(--dark-blue);
    color: var(--dark-blue);
}

.btn-outline-dark:hover {
    background-color: var(--dark-blue);
    color: var(--white);
}

/* Top Bar */
.top-bar {
    background-color: var(--dark-blue);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    padding: 0.6rem 0;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info {
    display: flex;
    gap: 1.5rem;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-info i {
    width: 14px;
    height: 14px;
    color: var(--primary-yellow);
}

/* Navbar */
.navbar {
    background-color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
    color: var(--dark-blue);
}

.logo-img {
    height: 80px;
    /* Tamaño premium para el logo corporativo */
    width: auto;
    display: block;
    object-fit: contain;
    transition: var(--transition);
}

.logo-img:hover {
    transform: scale(1.03);
}

.logo-icon {
    color: var(--primary-yellow);
    width: 26px;
    height: 26px;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--primary-yellow);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-yellow);
}

.mobile-menu-btn {
    display: none;
}

/* Hero Section */
.hero {
    position: relative;
    height: 80vh;
    min-height: 550px;
    background-image: url('../img/logo-fondo.jpeg');
    /* Obra Civil */
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(11, 34, 61, 0.95) 0%, rgba(11, 34, 61, 0.7) 45%, rgba(11, 34, 61, 0.2) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 650px;
}

.hero h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.15rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* Sobre Nosotros */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: flex-start;
    /* Alineado arriba para un look más editorial */
}

.section-title {
    font-size: 2.5rem;
    color: var(--dark-blue);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--dark-blue);
    margin-bottom: 0.5rem;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.about-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--dark-blue);
    background: var(--light-gray);
    padding: 0.5rem 1rem;
    border-radius: 50px;
}

.badge-icon {
    color: var(--primary-yellow);
    width: 18px;
    height: 18px;
}

.about-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    border-radius: 4px;
    /* Bordes más rectos para look industrial serio */
    box-shadow: 20px 20px 0px var(--primary-yellow);
    /* Detalle de diseño premium */
}

/* Servicios */
.bg-light {
    background-color: var(--light-gray);
    position: relative;
    overflow: hidden;
    background-image: url("data:image/svg+xml,%3Csvg width='52' height='26' viewBox='0 0 52 26' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23d1d8e0' fill-opacity='0.4'%3E%3Cpath d='M10 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6 0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6 0 2.21 1.79 4 4 4v2c-3.314 0-6-2.686-6-6 0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6zm25.464-1.95l8.486 8.486-1.414 1.414-8.486-8.486 1.414-1.414z' /%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    padding: 2.5rem 2rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 35px rgba(0, 0, 0, 0.12);
}

.service-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.service-card p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Colores de las tarjetas */
.card-white {
    background-color: var(--card-white);
    color: var(--dark-blue);
}

.card-white .service-icon {
    background-color: #f1f5fa;
    color: var(--primary-yellow);
}

.card-light-yellow {
    background-color: var(--card-yellow);
    color: var(--dark-blue);
}

.card-light-yellow .service-icon {
    background-color: rgba(255, 255, 255, 0.6);
    color: var(--dark-blue);
}

.card-blue {
    background-color: var(--card-blue);
    color: var(--white);
}

.card-blue .service-icon {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--primary-yellow);
}

.card-dark-blue {
    background-color: var(--card-dark);
    color: var(--white);
}

.card-dark-blue .service-icon {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--primary-yellow);
}

/* La 5ta tarjeta como acento de color sólido */
.card-accent {
    background-color: var(--primary-yellow);
    color: var(--dark-blue);
}

.card-accent .service-icon {
    background-color: rgba(255, 255, 255, 0.3);
    color: var(--dark-blue);
}

/* Truco para centrar las 2 últimas tarjetas en el grid de 3 columnas */
.grid-center-bottom {
    grid-column: span 1;
}

.grid-center-bottom:nth-child(4) {
    grid-column-start: 1;
    /* Esto hace que se alinee pero queremos centrar. Flex/CSS Grid lo solucionan diferente. 
    Una forma es usar flex en el padre para las dos últimas, pero con grid usamos place-self o cambiamos la estructura en Responsive */
}

/* ¿Por qué Elegirnos? */
.why-choose-us {
    background-color: var(--darker-blue);
    background-image: url('https://www.transparenttextures.com/patterns/stardust.png');
    /* Estrella ligera */
    position: relative;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.value-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(2px);
    padding: 2rem 1.2rem;
    border-radius: 8px;
    text-align: center;
    color: var(--white);
    transition: var(--transition);
}

.value-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.value-icon {
    width: 45px;
    height: 45px;
    background-color: var(--primary-yellow);
    color: var(--dark-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.2rem;
}

.value-item h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.value-item p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Footer (Inspirado en Imagen 3) */
.site-footer {
    background: linear-gradient(180deg, #9caebf 0%, #859cae 100%);
    position: relative;
    border-bottom: 15px solid var(--primary-yellow);
}

.footer-content {
    padding: 4rem 0;
    display: flex;
    justify-content: center;
}

.footer-contact-block {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    padding: 2.5rem 3rem;
    border: 4px solid #6b8296;
    background-color: rgba(255, 255, 255, 0.15);
    max-width: 800px;
    border-radius: 2px;
}

.contact-line {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: #3b505f;
    font-size: 1.05rem;
    font-weight: 600;
}

.footer-icon {
    color: #3b505f;
    width: 22px;
    height: 22px;
    margin-top: 2px;
    flex-shrink: 0;
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.15);
    padding: 1rem 0;
    color: #e2e8ec;
    font-size: 0.85rem;
}

/* Portafolio de Proyectos */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    height: 350px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(11, 34, 61, 0.9) 0%, rgba(11, 34, 61, 0.4) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info h4 {
    color: var(--primary-yellow);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    color: var(--white);
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Responsividad */
@media (max-width: 1024px) {
    .values-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }

    .nav-links,
    .btn-contact {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: var(--dark-blue);
        cursor: pointer;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .about-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .grid-center-bottom:nth-child(4) {
        grid-column-start: auto;
    }

    .values-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-contact-block {
        padding: 1.5rem;
        border-width: 2px;
    }

    .contact-line {
        font-size: 0.95rem;
    }
}

@media (max-width: 576px) {
    .values-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
}