/* --- VARIABLES DE COLORES --- */
:root {
    --azul-petroleo: #0F4C5E;
    --azul-turquesa: #1C687E;
    --turquesa: #519FA1;
    --verde-menta: #8EC8BB;

    --blanco: #FFFFFF;
    --fondo-claro: #F8FBFB;
    --texto-oscuro: #2C3E50;
    --texto-gris: #667580;
}

/* --- RESET BÁSICO --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

body {
    color: var(--texto-oscuro);
    background-color: var(--fondo-claro);
    line-height: 1.6;
}

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

/* --- HEADER Y NAVEGACIÓN --- */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px); /* Efecto cristal */
    position: fixed; /* Se queda arriba al hacer scroll */
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img,
.logo-fallback {
    height: 55px; /* Ajusta según tu logo */
    display: block;
}

.logo-fallback {
    display: flex;
    align-items: center;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--azul-petroleo);
}

nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

nav a.nav-link {
    text-decoration: none;
    color: var(--azul-petroleo);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    transition: color 0.3s;
}

/* Efecto de línea debajo al pasar el ratón */
nav a.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--turquesa);
    transition: width 0.3s ease;
}

nav a.nav-link:hover {
    color: var(--turquesa);
}

nav a.nav-link:hover::after {
    width: 100%;
}

/* --- BOTONES --- */
.btn {
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    cursor: pointer;
    text-align: center;
    font-size: 1rem;
}

.btn-outline {
    border: 2px solid var(--turquesa);
    color: var(--turquesa);
    background: transparent;
}

.btn-outline:hover {
    background-color: var(--turquesa);
    color: var(--blanco);
}

.btn-primary {
    background-color: var(--turquesa);
    color: var(--blanco);
    border: none;
    padding: 16px 36px;
    font-size: 1.1rem;
    box-shadow: 0 8px 20px rgba(81, 159, 161, 0.3);
}

/* ESTILOS BOTÓN DESHABILITADO (se usa solo para WhatsApp por ahora) */
.btn-disabled,
.btn-disabled:hover {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #cccccc;
    color: #666666;
    border: none;
    box-shadow: none;
    pointer-events: none; /* Evita clics totalmente */
}

/* --- SECCIÓN HERO (IMAGEN DE FONDO) --- */
.hero {
    /* Degradado de tus colores + Imagen de Unsplash de fondo */
    background: linear-gradient(
        to right,
        rgba(15, 76, 94, 0.9),
        rgba(28, 104, 126, 0.7)
    ),
    url('https://images.unsplash.com/photo-1576091160550-2173ff9e5eb4?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;

    color: var(--blanco);
    padding: 180px 0 120px 0; /* Espacio extra arriba por el header fijo */
    text-align: left;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 700px;
}

.badge {
    background-color: rgba(142, 200, 187, 0.2);
    color: var(--verde-menta);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 20px;
    border: 1px solid var(--verde-menta);
}

.badge-dark {
    background-color: rgba(81, 159, 161, 0.1);
    color: var(--turquesa);
    border-color: var(--turquesa);
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 5px;
    line-height: 1.1;
}

.slogan {
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--verde-menta);
    margin-bottom: 25px;
    font-style: italic;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 40px;
    color: #E0F2F1;
    font-weight: 300;
}

/* --- SECCIÓN SERVICIOS --- */
.services {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px auto;
}

.section-header h2 {
    color: var(--azul-petroleo);
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-header p {
    color: var(--texto-gris);
}

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

.card {
    background: var(--blanco);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.05);
    transition: all 0.4s ease;
    border: 1px solid rgba(0,0,0,0.03);
}

.card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 45px rgba(15, 76, 94, 0.1);
}

.card-img {
    height: 220px;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.card:hover .card-img img {
    transform: scale(1.05);
}

.card-content {
    padding: 30px;
}

.card-content h3 {
    color: var(--azul-petroleo);
    font-size: 1.4rem;
    margin-bottom: 15px;
}

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

/* --- SECCIÓN FILOSOFÍA / NOSOTROS --- */
.about {
    padding: 100px 0;
    background-color: var(--blanco);
}

.about-content {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: start;
}

.about-text h2 {
    color: var(--azul-petroleo);
    font-size: 2.3rem;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--texto-gris);
    margin-bottom: 18px;
}

.about-values {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.about-values li {
    border-left: 3px solid var(--turquesa);
    padding-left: 20px;
}

.about-values h3 {
    color: var(--azul-petroleo);
    font-size: 1.1rem;
    margin-bottom: 6px;
}

.about-values p {
    color: var(--texto-gris);
    font-size: 0.95rem;
}

/* --- FOOTER --- */
footer {
    background-color: var(--azul-petroleo);
    color: var(--blanco);
    padding: 70px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo {
    height: 60px;
    margin-bottom: 15px;
    /* Si tu logo es oscuro, puedes forzar que sea claro aquí o usar una versión blanca */
    filter: brightness(0) invert(1);
}

.footer-info {
    max-width: 300px;
}

.footer-slogan {
    color: var(--verde-menta);
    font-style: italic;
    font-size: 1.1rem;
}

.footer-links h4 {
    color: var(--turquesa);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-links p {
    margin-bottom: 12px;
    color: #C1D5DB;
    display: flex;
    align-items: center;
    gap: 10px;
}

.disabled-text {
    opacity: 0.5;
}

.copyright {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #8CAAB4;
    font-size: 0.9rem;
}

/* --- RESPONSIVO: TABLET Y MÓVIL --- */

/* Menú Hamburguesa Básico Oculto en PC (ahora es un <button>) */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
    background: none;
    border: none;
    padding: 0;
}

.menu-toggle .bar {
    height: 3px;
    width: 100%;
    background-color: var(--azul-petroleo);
    border-radius: 3px;
    transition: all 0.3s ease;
}

@media (max-width: 900px) {
    /* Activar Hamburguesa */
    .menu-toggle {
        display: flex;
    }

    /* Ocultar menú normal y prepararlo para deslizar */
    nav {
        position: fixed;
        top: 0;
        right: -100%; /* Oculto a la derecha */
        width: 250px;
        height: 100vh;
        background-color: var(--blanco);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        box-shadow: -5px 0 20px rgba(0,0,0,0.1);
        transition: right 0.4s ease;
        gap: 40px;
    }

    nav.active {
        right: 0; /* Aparece */
    }

    /* Animación de la cruz en la hamburguesa */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* Ajustes Hero para móvil */
    .hero {
        padding: 140px 0 80px 0;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .slogan {
        font-size: 1.4rem;
    }

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