/* ==========================================================================
   CSS Variables & Reset
   ========================================================================== */
:root {
    /* Color Palette */
    --clr-bg: #F8F7F5; /* Light sand/off-white background */
    --clr-surface: #FFFFFF;
    --clr-dark: #1C1C1A; /* Not pure black, elegant dark gray/brown */
    --clr-accent: #990000; /* Carlos Ortega Burgundy */
    --clr-accent-dark: #7a0000;
    --clr-sand: #EAE6DF;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;
    
    /* Spacing & Sizes */
    --container-width: 1200px;
    --section-padding: 100px;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--clr-bg);
    color: var(--clr-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ==========================================================================
   Typography & Utilities
   ========================================================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--section-padding) 0;
}

.text-center { text-align: center; }
.text-white { color: #FFFFFF; }

.bg-light { background-color: var(--clr-surface); }
.bg-dark { background-color: var(--clr-dark); color: #FFF; }
.bg-sand { background-color: var(--clr-sand); }

.subtitle {
    display: block;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.7);
}

.subtitle-dark {
    display: block;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1rem;
    color: rgba(28,28,26,0.6);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.section-text {
    font-size: 1.125rem;
    color: rgba(28,28,26,0.8);
    max-width: 800px;
    margin-bottom: 2rem;
}
.bg-dark .section-text {
    color: rgba(255,255,255,0.8);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: #FFF;
}
.btn-primary:hover {
    background-color: var(--clr-accent-dark);
    transform: translateY(-2px);
}

.btn-outline {
    border-color: var(--clr-dark);
    color: var(--clr-dark);
}
.btn-outline:hover {
    background-color: var(--clr-dark);
    color: #FFF;
}
.header.scrolled .btn-outline {
    border-color: var(--clr-dark);
    color: var(--clr-dark);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.1rem;
    border-radius: 6px;
}

.glow-effect {
    box-shadow: 0 4px 15px rgba(153, 0, 0, 0.4);
}
.glow-effect:hover {
    box-shadow: 0 6px 20px rgba(153, 0, 0, 0.6);
}

/* ==========================================================================
   Header & Nav
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 24px 0;
    transition: var(--transition);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 16px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: #FFF;
}
.header.scrolled .logo a {
    color: var(--clr-dark);
}

.nav-list {
    display: flex;
    gap: 32px;
}

.nav-list a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.8);
    position: relative;
}
.header.scrolled .nav-list a {
    color: var(--clr-dark);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: currentColor;
    transition: width 0.3s ease;
}
.nav-list a:hover::after {
    width: 100%;
}

.header-cta .btn-outline {
    color: #FFF;
    border-color: rgba(255,255,255,0.5);
}
.header-cta .btn-outline:hover {
    background-color: #FFF;
    color: var(--clr-dark);
}
.header.scrolled .header-cta .btn-outline {
    color: var(--clr-dark);
    border-color: var(--clr-dark);
}
.header.scrolled .header-cta .btn-outline:hover {
    background-color: var(--clr-dark);
    color: #FFF;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #FFF;
    font-size: 1.5rem;
    cursor: pointer;
}
.header.scrolled .mobile-toggle {
    color: var(--clr-dark);
}

/* Mobile Nav */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--clr-surface);
    z-index: 200;
    padding: 80px 40px;
    box-shadow: -5px 0 20px rgba(0,0,0,0.1);
    transition: right 0.4s ease;
    display: flex;
    flex-direction: column;
}

.mobile-nav.open {
    right: 0;
}

.mobile-close {
    position: absolute;
    top: 30px;
    right: 30px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--clr-dark);
    cursor: pointer;
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.mobile-nav-list a {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--clr-dark);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(28,28,26,0.8));
}

.hero-content {
    text-align: center;
    max-width: 900px;
    padding-top: 80px;
}

.hero .title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 7vw, 5.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero .description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: rgba(255,255,255,0.8);
}

/* ==========================================================================
   Split Sections (Filosofía & Sostenibilidad)
   ========================================================================== */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.split-reverse {
    direction: rtl;
}
.split-reverse > * {
    direction: ltr;
}

.split-image img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    border-radius: 4px;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 3.5rem;
    line-height: 1;
    margin-bottom: 5px;
    color: var(--clr-dark);
}

.stat-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(28,28,26,0.6);
}

/* ==========================================================================
   Servicios
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.service-card {
    padding: 40px;
    background-color: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 4px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    background-color: rgba(255,255,255,0.05);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--clr-accent);
    margin-bottom: 24px;
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 16px;
    font-weight: 400;
}

.service-card p {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
}

/* ==========================================================================
   Proyectos
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    cursor: pointer;
}

.project-card:nth-child(even) {
    margin-top: 60px; /* Offset effect */
}

.project-img {
    height: 500px;
    overflow: hidden;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

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

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px;
    background: linear-gradient(transparent, rgba(28,28,26,0.9));
    color: #FFF;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-info {
    transform: translateY(0);
    opacity: 1;
}

.project-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
    display: block;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 400;
}

/* ==========================================================================
   Testimonial
   ========================================================================== */
.testimonial-wrapper {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.quote-icon {
    font-size: 3rem;
    color: rgba(28,28,26,0.1);
    margin-bottom: 30px;
}

.testimonial-text {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    line-height: 1.4;
    font-style: italic;
    color: var(--clr-dark);
    margin-bottom: 40px;
}

.author-name {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
}

/* ==========================================================================
   Final CTA & Footer
   ========================================================================== */
.cta-section {
    background-color: var(--clr-dark);
    padding: 120px 0;
}

.footer {
    background-color: var(--clr-dark);
    color: rgba(255,255,255,0.6);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: #FFF;
}

.footer-social {
    display: flex;
    gap: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    font-size: 0.85rem;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s ease;
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s ease;
}

.reveal-up.active,
.reveal-left.active,
.reveal-right.active {
    opacity: 1;
    transform: translate(0, 0);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 992px) {
    .nav {
        display: none;
    }
    
    .header-cta {
        display: none;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .split-section {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .split-reverse {
        direction: ltr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card:nth-child(even) {
        margin-top: 0;
    }
    
    .project-info {
        opacity: 1;
        transform: translateY(0);
        background: linear-gradient(transparent, rgba(28,28,26,0.8));
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .split-image img {
        height: 400px;
    }
    
    .project-img {
        height: 350px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

/* ==========================================================================
   Floating WhatsApp
   ========================================================================== */
.floating-wa {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #25D366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 35px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: var(--transition);
}
.floating-wa:hover {
    transform: scale(1.1);
    background-color: #128C7E;
}

/* ==========================================================================
   Fat Footer
   ========================================================================== */
.fat-footer {
    background-color: var(--clr-dark);
    color: var(--clr-bg);
    padding: 80px 0 40px;
}
.fat-footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}
.footer-col h4 {
    color: var(--clr-sand);
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-family: var(--font-heading);
}
.footer-col p {
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    margin-bottom: 15px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 12px;
}
.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: var(--transition);
}
.footer-col ul li a:hover {
    color: var(--clr-accent);
}
.footer-social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}
.footer-social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
    color: white;
    transition: var(--transition);
}
.footer-social-links a:hover {
    background-color: var(--clr-accent);
    transform: translateY(-3px);
}
.fat-footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .fat-footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .fat-footer-grid {
        grid-template-columns: 1fr;
    }
    .fat-footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-item {
    border-bottom: 1px solid rgba(0,0,0,0.1);
    margin-bottom: 15px;
}
.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 20px 0;
    font-size: 1.2rem;
    font-weight: 500;
    font-family: var(--font-heading);
    color: var(--clr-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}
.faq-question:hover {
    color: var(--clr-accent);
}
.faq-icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
    color: var(--clr-accent);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-answer-inner {
    padding-bottom: 20px;
    color: rgba(28,28,26,0.8);
    line-height: 1.6;
}

/* ==========================================================================
   Contact Cards
   ========================================================================== */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}
.contact-card-box {
    background: var(--clr-surface);
    padding: 40px 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    text-decoration: none;
    display: block;
}
.contact-card-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(153,0,0,0.1);
    border-color: rgba(153,0,0,0.2);
}
.contact-card-icon {
    font-size: 3rem;
    color: var(--clr-accent);
    margin-bottom: 20px;
}
.contact-card-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--clr-dark);
    margin-bottom: 10px;
}
.contact-card-text {
    color: rgba(28,28,26,0.7);
    font-size: 1.1rem;
}
@media (max-width: 992px) {
    .contact-cards {
        grid-template-columns: 1fr;
    }
}