/* Variables */
:root {
    /* Colores principales según la paleta especificada */
    --color-primary: #264653; /* Azul Petróleo */
    --color-secondary: #F4F1ED; /* Beige Claro */
    --color-accent: #2F734F; /* Verde Bosque */
    --color-cta: #CBB26A; /* Dorado Suave */
    --color-neutral: #A8BDBF; /* Gris Verdoso */
    
    /* Colores base */
    --color-white: #FFFFFF;
    --color-black: #000000;
    
    /* Colores de texto */
    --color-text-primary: #264653;
    --color-text-secondary: #6B7B8C;
    --color-text-light: #FFFFFF;
    
    /* Colores de fondo */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F4F1ED;
    --color-bg-dark: #264653;
    
    /* Fuentes */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Source Sans Pro', sans-serif;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(38, 70, 83, 0.1);
    --shadow-md: 0 4px 8px rgba(38, 70, 83, 0.12);
    --shadow-lg: 0 8px 16px rgba(38, 70, 83, 0.15);
    
    /* Transiciones */
    --transition: all 0.3s ease;
    
    /* Bordes */
    --border-radius: 4px;
}

/* Reset y estilos base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--color-cta);
}

ul {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

p {
    margin-bottom: 1rem;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--font-body);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 4rem 0;
}

/* Botón para volver arriba */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--color-accent);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

/* Header y navegación */
.main-header {
    background-color: var(--color-primary);
    padding: 0.8rem 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* Logo */
.logo a {
    display: flex;
    align-items: center;
    color: var(--color-white);
    font-weight: 600;
}

.logo img {
    height: 70px;
    width: auto;
    max-width: 250px;
    object-fit: contain;
}

/* Navegación principal */
.main-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Enlaces de navegación - Desktop */
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links li {
    list-style: none;
}

.nav-links a {
    color: var(--color-white);
    font-weight: 500;
    padding: 0.5rem;
    position: relative;
    transition: var(--transition);
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--color-cta);
    transition: var(--transition);
}

.nav-links a:hover::after, .nav-links a.active::after {
    width: 100%;
}

/* Botón de contacto */
.contact-btn {
    background-color: var(--color-accent);
    color: var(--color-white) !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-btn:hover {
    background-color: var(--color-cta);
    color: var(--color-primary) !important;
    transform: translateY(-2px);
}

.contact-btn::after {
    display: none !important;
}

/* Botón de menú móvil - oculto por defecto */
.menu-toggle {
    display: none;
    color: var(--color-white);
    font-size: 1.5rem;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
}

/* Botón de cambio de modo */
.mode-toggle {
    background-color: var(--color-accent);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: none;
    cursor: pointer;
    margin-left: 1rem;
}

.mode-toggle:hover {
    background-color: var(--color-cta);
    transform: translateY(-3px);
}

.mode-toggle .fa-sun {
    display: none;
}

.dark-mode .mode-toggle .fa-moon {
    display: none;
}

.dark-mode .mode-toggle .fa-sun {
    display: block;
}

/* Footer */
.main-footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-info h3, .footer-links h3, .footer-social h3 {
    color: var(--color-cta);
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

.footer-info p {
    margin-bottom: 0.5rem;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--color-white);
}

.footer-links a:hover {
    color: var(--color-cta);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border-radius: 50%;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--color-accent);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
}

.footer-bottom a {
    color: var(--color-white);
}

.footer-bottom a:hover {
    color: var(--color-cta);
}

/* Modales */
#modal-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

#modal-container.modal-open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--color-bg-primary);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2rem;
    position: relative;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-open .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--color-text-primary);
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--color-accent);
    transform: rotate(90deg);
}

/* Botones */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--color-neutral);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-cta);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* Responsive - Tablet */
@media (max-width: 992px) {
    .logo img {
        height: 60px;
        max-width: 200px;
    }
    
    .nav-links {
        gap: 1rem;
    }
}

/* Responsive - Móvil */
@media (max-width: 768px) {
    /* Reorganizar header para móvil */
    .main-header .container {
        display: grid;
        grid-template-columns: 1fr auto auto;
        gap: 1rem;
        align-items: center;
    }
    
    .logo {
        grid-column: 1;
    }
    
    .logo img {
        height: 50px;
        max-width: 180px;
    }
    
    /* Mover el botón de modo al header en móvil */
    .mode-toggle {
        grid-column: 2;
        position: static;
        margin: 0;
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    /* Navegación móvil */
    .main-nav {
        grid-column: 3;
        gap: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    /* Menú móvil deslizable */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 250px;
        height: 100vh;
        background-color: var(--color-primary);
        flex-direction: column;
        align-items: flex-start;
        padding: 4rem 2rem;
        transition: right 0.3s ease;
        box-shadow: var(--shadow-lg);
        z-index: 999;
        gap: 1rem;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: 0.75rem 0;
        width: 100%;
    }
    
    .contact-btn {
        width: 100%;
        text-align: center;
        margin-top: 1rem;
    }
    
    #modal-container {
        padding: 1rem;
    }
    
    .modal-content {
        padding: 1.5rem;
    }
}

/* Móvil pequeño */
@media (max-width: 576px) {
    html {
        font-size: 14px;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .main-header {
        padding: 0.75rem 0;
    }
    
    .main-header .container {
        gap: 0.5rem;
    }
    
    .logo img {
        height: 40px;
        max-width: 150px;
    }
    
    .mode-toggle {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
    
    .menu-toggle {
        font-size: 1.25rem;
        padding: 0.25rem;
    }
}

/* Overlay para el menú móvil */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Botón de cerrar dentro del menú móvil */
.nav-close {
    display: none;
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--color-white);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0.5rem;
}

@media (max-width: 768px) {
    .nav-close {
        display: block;
    }
}

/* Headers de páginas con imagen hero */
.page-header {
    background-size: cover;
    background-position: center;
    padding: 8rem 0;
    text-align: center;
    position: relative;
    color: var(--color-white);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(38, 70, 83, 0.7), rgba(38, 70, 83, 0.7));
    z-index: 1;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header .page-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--color-white) !important;
}

.page-header .page-subtitle {
    font-size: 1.25rem;
    color: var(--color-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Headers específicos con imágenes */
.blog-header {
    background-image: url('../images/blog-hero.jpg');
}

.services-header {
    background-image: url('../images/services-hero.jpg');
}

.about-header {
    background-image: url('../images/about-hero.jpg');
}

.contact-header {
    background-image: url('../images/contact-hero.jpg');
}

/* Si no hay imagen, usar color sólido */
.blog-header,
.services-header,
.about-header,
.contact-header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 5rem 0;
    text-align: center;
    position: relative;
}

/* Estilos unificados para todos los banners de página */
.page-banner {
    background-color: var(--color-primary);
    background-size: cover;
    background-position: center;
    padding: 5rem 0;
    text-align: center;
    position: relative;
    color: var(--color-white);
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(38, 70, 83, 0.8), rgba(38, 70, 83, 0.8));
    z-index: 1;
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner .page-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--color-white) !important;
}

.page-banner .page-subtitle {
    font-size: 1.25rem;
    color: var(--color-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Banners específicos por página */
.about-banner {
    background-image: url('../images/about-hero.jpg');
}

.services-banner {
    background-image: url('../images/services-hero.jpg');
}

.blog-banner {
    background-image: url('../images/blog-hero.jpg');
}

.contact-banner {
    background-image: url('../images/contact-hero.jpg');
}

/* Mantener la página home con estilo único pero armónico */
.hero {
    background-color: var(--color-primary);
    background-image: linear-gradient(rgba(38, 70, 83, 0.7), rgba(38, 70, 83, 0.7)), url('../images/banner-2.png');
    background-size: cover;
    background-position: center;
    padding: 8rem 0;
    text-align: center;
    position: relative;
    color: var(--color-white);
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--color-white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: 2rem;
}