/* =========================================
           VARIABLES DE COLOR (Estilo Industrial)
           ========================================= */
:root {
    --primary-color: #1A2530;
    /* Azul Marino (Estabilidad) */
    --secondary-color: #7F8C8D;
    /* Gris Acero (Maquinaria) */
    --accent-color: #356ba0;
    /* Naranja Industrial (Precaución/Acción) */
    --bg-light: #F4F6F7;
    /* Gris muy claro para fondos */
    --white: #FFFFFF;
    --text-dark: #2C3E50;
    --max-width: 1440px;
    /* Contenedor máximo para pantallas grandes */
}

/* =========================================
           RESETEO BÁSICO Y TIPOGRAFÍA
           ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
}

/* =========================================
           NAVEGACIÓN
           ========================================= */
header {
    background-color: var(--primary-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;

}

.logo-img {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img img {
    width: 80px;
    padding: .2rem;
    transition: .3s;
}

.logo-img img:hover {
    transform: scale(1.05);
    /* Pequeño efecto de zoom al pasar el mouse */
}


.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--primary-color);
    text-align: center;

    /* Ocultamiento y animación suave */
    max-height: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease-in-out, opacity 0.4s ease-in-out, padding 0.4s ease-in-out;
}

.nav-links li a {
    color: var(--white);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 600;
    transition: color 0.3s;
}

.nav-links li a:hover {
    color: var(--accent-color);
}

/* Menú Hamburguesa (Mobile) */
.menu-btn {
    display: block;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
}

.nav-links.active {
    max-height: 400px;
    /* Un valor seguro que supere el alto del menú abierto */
    padding: 1rem 0;
    opacity: 1;
}

.nav-links.active li {
    margin: 1rem 0;
}

.nav-links.active li a {
    margin: 0;
    font-size: 1.2rem;
}

/* =========================================
           SECCIONES GENERALES
           ========================================= */
section {
    padding: 6rem 0;
    /* Espaciado para el header fijo */
}

h2 {
    font-size: 2.5rem;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 2rem;
    position: relative;
    color: var(--primary-color);

}

/* Línea decorativa industrial debajo de los títulos */
h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
}

/* =========================================
           1. INICIO (Hero Section)
           ========================================= */
#inicio {
    height: 100vh;
    min-height: 600px;
    background-color: var(--primary-color);
    background-image: linear-gradient(rgba(26, 37, 48, 0.5), rgba(26, 37, 48, 0.8)), url('../img/hero.png');
    background-size: cover;
    background-position: center;

    display: flex;
    align-items: center;
    color: var(--white);
    padding-top: 0;
}


#inicio h1 {
    font-size: 2.5rem;
    font-weight: 800;
    text-transform: uppercase;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    /* Sombra para mejorar legibilidad sobre la imagen */
}

#inicio p {
    font-size: 1.1rem;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    /* Sombra para mejorar legibilidad sobre la imagen */
    margin-bottom: 2rem;
    max-width: 600px;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 2px;
    /* Bordes casi rectos para estilo industrial */
    transition: 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: scale(1.05);
}

/* =========================================
           2. QUIÉNES SOMOS
           ========================================= */
#quienes-somos {
    background-color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

/* Contenedor simulando una imagen de planta */
.about-image {
    background-image: url(../img/quienes-somos.jpeg);
    height: 300px;
    border-left: 5px solid var(--accent-color);
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35), 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.about-image:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45), 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* =========================================
           3. SERVICIOS (Cards)
           ========================================= */
#servicios {
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.card {
    background-color: var(--white);
    padding: 2rem;
    border-top: 4px solid var(--accent-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.card p {
    color: var(--secondary-color);
    font-size: 0.95rem;
}

/* =========================================
           4. CONTACTO
           ========================================= */
#contacto {
    /* Filtro oscuro (Azul marino al 85% de opacidad) + Imagen */
    background-image: linear-gradient(rgba(26, 37, 48, 0.8),
            rgba(26, 37, 48, 0.8)), url('../img/contacto.png');

    /* Ajustes para que la imagen se vea perfecta */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    /* Opcional: Descomenta la siguiente línea para un efecto "Parallax" donde la foto se queda quieta al hacer scroll */
    /* background-attachment: fixed; */

    color: var(--white);
}

#contacto h2 {
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    /* Sombra para mejorar legibilidad sobre la imagen */
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.contact-info p {
    margin-bottom: 1.5rem;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    /* Sombra para mejorar legibilidad sobre la imagen */
}

.contact-buttons {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin-top: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    /* Sombra para mejorar legibilidad sobre la imagen */
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    background-color: transparent;
    /* Sin color de fondo */
    color: var(--white);
    /* Texto en blanco para el fondo oscuro */
    padding: 0.5rem 0;
    /* Padding ajustado para alinear con el párrafo superior */
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.contact-btn svg {
    stroke: var(--accent-color);
    /* Icono en naranja industrial */
    transition: transform 0.3s ease;
}

.contact-btn:hover {
    color: var(--accent-color);
    /* El texto se pinta de naranja al pasar el mouse */
}

.contact-btn:hover svg {
    transform: translateX(5px);
    /* El icono da un pequeño salto a la derecha */
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--secondary-color);
    background-color: var(--white);
    font-family: 'Montserrat', sans-serif;
    border-radius: 2px;
}

.contact-form textarea {
    height: 150px;
    resize: vertical;
}

.contact-form button {
    align-self: flex-start;
}

/* =========================================
           FOOTER
           ========================================= */
footer {
    background-color: #121A22;
    color: var(--secondary-color);
    text-align: center;
    padding: 2rem 0;
    font-size: 0.9rem;
}

/* =========================================
           BOTÓN WHATSAPP FLOTANTE
           ========================================= */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25D366;
    /* Color oficial de WhatsApp */
    color: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background-color 0.3s ease;
}

.whatsapp-float svg {
    stroke: var(--white);
    /* Desactivar transform de svg global por posibles conflictos */
    transition: none;
}

.whatsapp-float.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.whatsapp-float.show:hover {
    background-color: #1ebe5d;
    transform: translateY(-5px) scale(1.05);
}

/* =========================================
           MEDIA QUERIES (Adaptabilidad)
           ========================================= */

/* Tablet (768px y superior) */
@media (min-width: 768px) {
    #inicio h1 {
        font-size: 3.5rem;
    }

    .about-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* Escritorio (1024px y superior) */
@media (min-width: 1024px) {
    .menu-btn {
        display: none;
    }

    .nav-links {
        display: flex !important;
        flex-direction: row;
        justify-content: flex-end;
        position: static;
        background-color: transparent;

        /* Reseteo de las propiedades de animación para escritorio */
        padding: 0;
        max-height: none;
        overflow: visible;
        opacity: 1;
    }

    .nav-links li a {
        margin-left: 2rem;
        margin-top: 0;
    }

    #inicio h1 {
        font-size: 4rem;
    }

    .services-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    /* Ajustes para Full HD (1920x1080) */
    section {
        padding: 8rem 0;
    }
}