:root {
    /* Color Palette */
    --clr-cream: #E5E0D8;
    --clr-cream-dark: #D4CDBC;
    --clr-black: #111111;
    --clr-black-light: #222222;
    --clr-white: #FFFFFF;
    --clr-gray: #666666;

    /* Typography */
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Inter', sans-serif;

    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-slow: 0.8s 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-sans);
    background-color: var(--clr-cream);
    color: var(--clr-black);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .serif {
    font-family: var(--font-serif);
    font-weight: 400;
}

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

/* --- Typography utilities --- */
.light-text { color: var(--clr-white); }
.dark-text { color: var(--clr-black); }

/* --- Navigation --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    transition: var(--transition-fast);
    background: transparent;
    color: var(--clr-black);
}

.navbar.scrolled {
    background-color: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(12px);
    padding: 0.6rem 5%;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    color: var(--clr-white);
}

.logo {
    display: flex;
    align-items: center;
}
.nav-logo {
    height: 50px;
    width: auto;
    filter: brightness(0);
    transition: filter 0.3s ease;
}

.navbar.scrolled .nav-logo {
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-links a {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    position: relative;
}

.nav-links a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--clr-black);
    transition: var(--transition-fast);
}

.nav-links a:not(.btn-primary):hover::after {
    width: 100%;
}

.navbar.scrolled .nav-links a:not(.btn-primary)::after {
    background-color: var(--clr-white);
}

.btn-primary {
    padding: 0.8rem 2rem;
    border: 1px solid var(--clr-black);
    border-radius: 50px;
}

.btn-primary:hover {
    background-color: var(--clr-black);
    color: var(--clr-white);
}

.navbar.scrolled .btn-primary {
    border-color: var(--clr-white);
}

.navbar.scrolled .btn-primary:hover {
    background-color: var(--clr-white);
    color: var(--clr-black);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}
.menu-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--clr-black);
    transition: var(--transition-fast);
}

.navbar.scrolled .menu-toggle .bar {
    background-color: var(--clr-white);
}

/* --- Buttons --- */
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-bottom: 1px solid var(--clr-black);
    padding-bottom: 5px;
}
.btn-outline .arrow {
    transition: var(--transition-fast);
}
.btn-outline:hover .arrow {
    transform: translateX(5px);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 100px; /* Offset for navbar */
    background-image: url('assets/hero_bg.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    z-index: 1;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(229, 224, 216, 0.88); /* Cream overlay to keep text readable */
    z-index: -1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 5%;
    max-width: 1200px;
}

.hero-subtitle {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--clr-black-light);
    margin-bottom: 1.75rem;
}

.hero-subtitle::before,
.hero-subtitle::after {
    content: '';
    height: 1px;
    width: 48px;
    background-color: var(--clr-black-light);
    opacity: 0.35;
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--clr-black);
}

.hero-description {
    font-size: 1.1rem;
    max-width: 100%;
    margin: 0 auto 3rem;
    color: var(--clr-gray);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--clr-black-light);
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
}

.director-card:hover .image-placeholder,
.director-card:active .image-placeholder {
    transform: scale(1.05);
}

/* Image placeholder removed from hero */

.hero-img-bg {
    background-image: url('https://images.unsplash.com/photo-1552664730-d307ca884978?q=80&w=2070&auto=format&fit=crop'); 
}

/* --- Services (Empresas) Section --- */
.services {
    background-color: var(--clr-black);
    color: var(--clr-white);
    padding: 8rem 10%;
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
}

.section-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.9rem;
    color: var(--clr-cream-dark);
    margin-top: 1rem;
}

/* Empresas Hero Layout */
.empresas-hero-layout {
    display: flex;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.empresas-hero-img {
    flex: 0.8;
    max-width: 450px;
}

.empresas-hero-img img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.1);
}

.empresas-hero-text {
    flex: 1;
}

.services-center-img {
    grid-area: center;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    pointer-events: none;
}

.services-center-img img {
    width: 200px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr 200px 1fr;
    grid-template-areas: 
        "card1 center card2"
        "card3 center card4";
    gap: 4rem;
}

.service-card {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    transition: var(--transition-fast);
}

.service-card:hover {
    border-top-color: var(--clr-white);
}



.service-number {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--clr-cream-dark);
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-family: var(--font-serif);
}

.service-text {
    color: #AAAAAA;
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* --- Education Section --- */
.education {
    background-color: var(--clr-cream);
    color: var(--clr-black);
    padding: 8rem 10%;
}

.education-header {
    text-align: center;
    margin-bottom: 5rem;
}

.education-subtitle {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.9rem;
    color: var(--clr-gray);
    margin-top: 1rem;
}

.education-intro {
    max-width: 700px;
    margin: 2rem auto 0;
    font-size: 1.1rem;
    color: var(--clr-gray);
}

.education-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.edu-card {
    background-color: var(--clr-white);
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.03);
}

.edu-card-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--clr-cream-dark);
    padding-bottom: 1rem;
}

.edu-table {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
    font-size: 0.95rem;
}

.edu-table-header {
    display: flex;
    gap: 2rem;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
    padding-bottom: 0.5rem;
    color: var(--clr-primary);
}

.edu-table-row {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.edu-col-prod {
    flex: 0 0 40%;
    line-height: 1.4;
    color: var(--clr-text);
}

.edu-col-alcance {
    flex: 1;
    color: #555;
    line-height: 1.5;
    font-size: 0.9em;
}

/* --- Carousel Section --- */
.carousel-section {
    padding: 6rem 0;
    overflow: hidden;
    text-align: center;
}

.clients-carousel {
    background-color: var(--clr-white);
    --fade-color: var(--clr-white);
}

.schools-carousel {
    background-color: var(--clr-white);
    --fade-color: var(--clr-white);
}

.clients-carousel .carousel-title,
.schools-carousel .carousel-title {
    color: var(--clr-black);
}

.carousel-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    margin-bottom: 4rem;
}

.carousel-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    white-space: nowrap;
}

.carousel-container::before,
.carousel-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
}
.carousel-container::before {
    left: 0;
    background: linear-gradient(to right, var(--fade-color) 0%, transparent 100%);
}
.carousel-container::after {
    right: 0;
    background: linear-gradient(to left, var(--fade-color) 0%, transparent 100%);
}

.carousel-track {
    display: inline-flex;
    align-items: center;
    gap: 4rem;
    padding: 0 2rem;
    animation: scroll 35s linear infinite;
}

.carousel-track:hover {
    animation-play-state: paused;
}

.carousel-track img {
    height: 70px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
    transition: var(--transition-fast);
}

/* Shared image styles for all carousels */
.carousel-track img {
    filter: grayscale(100%);
    opacity: 0.6;
}
.carousel-track img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-50% - 2rem)); }
}

/* --- Directors Section --- */
.directors {
    background-color: var(--clr-black-light);
    color: var(--clr-white);
    padding: 8rem 10%;
}

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

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

.director-img {
    width: 85%;
    max-width: 320px;
    aspect-ratio: 3/4;
    margin: 0 auto 2rem auto;
    background-color: var(--clr-black);
    overflow: hidden;
}

.dir-img-1 { 
    background-image: url('assets/slide7_img2.webp'); 
    background-size: 160%;
    background-position: center 10%;
}
.dir-img-2 { 
    background-image: url('assets/slide7_img3.webp'); 
    background-size: cover;
    background-position: center 10%;
}
.dir-img-3 { 
    background-image: url('assets/slide7_img4.webp'); 
    background-size: cover;
    background-position: center 20%;
}

.director-name {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.director-role {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.8rem;
    color: var(--clr-cream-dark);
    margin-bottom: 1rem;
}

.director-desc {
    font-size: 0.9rem;
    color: #AAAAAA;
    line-height: 1.5;
}

/* --- Contact CTA Section --- */
.contact-cta {
    background-color: var(--clr-cream);
    padding: 4rem 10%;
    text-align: center;
    border-top: 1px solid var(--clr-cream-dark);
}

.contact-title {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: var(--clr-black);
}

.contact-subtitle {
    font-size: 1.1rem;
    color: var(--clr-gray);
    margin-bottom: 2.5rem;
}

.cta-btn {
    display: inline-block;
    font-size: 1.1rem;
    padding: 1.2rem 4rem;
    border-radius: 50px;
    background-color: transparent;
    color: var(--clr-black);
    border: 2px solid var(--clr-black);
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition-fast);
    font-weight: 500;
}

.cta-btn:hover {
    background-color: var(--clr-black);
    color: var(--clr-white);
}

/* --- Footer --- */
.footer {
    background-color: var(--clr-black);
    color: var(--clr-white);
    padding: 6rem 10% 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-img-logo {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
    margin-bottom: 1rem;
}

.footer-brand-desc {
    color: var(--clr-gray);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 300px;
    margin-top: 1rem;
}

.footer-links h3,
.footer-contact h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 400;
    color: var(--clr-white);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--clr-gray);
    font-size: 1rem;
    transition: var(--transition-fast);
}

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

.phone-number {
    display: inline-block;
    font-size: 1.5rem;
    font-family: var(--font-serif);
    color: var(--clr-cream-dark);
    margin-bottom: 1.5rem !important;
    text-decoration: none;
    transition: var(--transition-fast);
}

.phone-number:hover {
    color: var(--clr-white);
}

.footer-desc {
    color: #888;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}
.social-links a {
    color: var(--clr-white);
    border: 1px solid rgba(255,255,255,0.3);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.social-links a:hover {
    background-color: var(--clr-white);
    color: var(--clr-black);
}

.footer-bottom {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

/* --- Floating WhatsApp Button --- */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #25D366;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(37, 211, 102, 0.6);
}

/* --- Animations & Utilities --- */
.fade-in { opacity: 0; transform: translateY(20px); transition: var(--transition-slow); }
.fade-in.appear { opacity: 1; transform: translateY(0); }

.fade-up { opacity: 0; transform: translateY(40px); transition: var(--transition-slow); }
.fade-up.appear { opacity: 1; transform: translateY(0); }

.slide-in-right { opacity: 0; transform: translateX(50px); transition: var(--transition-slow); }
.slide-in-right.appear { opacity: 1; transform: translateX(0); }

.slide-in-left { opacity: 0; transform: translateX(-50px); transition: var(--transition-slow); }
.slide-in-left.appear { opacity: 1; transform: translateX(0); }

/* --- Responsive Design --- */

/* Prevent horizontal scroll globally */
html, body {
    max-width: 100%;
    overflow-x: hidden;
}

/* Tablet */
@media (max-width: 992px) {
    .hero-title { font-size: 3rem; }
    .section-title { font-size: 2.5rem; }
    .directors-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid, .education-grid { gap: 2rem; }
    .services, .education, .directors { padding: 6rem 6%; }

    .empresas-hero-layout {
        gap: 2.5rem;
    }

    .empresas-hero-img {
        max-width: 350px;
    }
}

/* Mobile */
@media (max-width: 768px) {

    /* --- Empresas Hero Layout --- */
    .empresas-hero-layout {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }
    .empresas-hero-img {
        max-width: 300px;
        width: 80%;
    }
    .empresas-hero-text {
        text-align: center;
    }
    .empresas-hero-text h2,
    .empresas-hero-text .section-subtitle,
    .empresas-hero-text .services-intro {
        text-align: center !important;
    }

    /* --- Services Center Image (hide on mobile) --- */
    .services-center-img {
        display: none;
    }

    /* --- Navbar --- */
    .navbar {
        padding: 1rem 5%;
    }
    .navbar.scrolled {
        padding: 0.8rem 5%;
    }
    .nav-logo {
        height: 42px;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(17, 17, 17, 0.98);
        padding: 6rem 2rem 2rem;
        box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        text-align: center;
        gap: 2rem;
        z-index: 99;
    }
    .nav-links.active {
        display: flex;
    }
    .menu-toggle {
        display: flex;
        z-index: 101;
    }

    /* --- Hero --- */
    .hero {
        padding-top: 80px;
        min-height: 60vh;
        background-attachment: scroll;
    }
    .hero-content {
        padding: 0 5%;
        width: 100%;
        box-sizing: border-box;
    }
    .hero-title,
    h1.hero-title {
        font-size: 2rem !important;
        line-height: 1.15 !important;
        word-break: break-word;
    }
    .hero-subtitle {
        font-size: 0.75rem;
        letter-spacing: 2px;
        gap: 0.6rem;
    }
    .hero-subtitle::before,
    .hero-subtitle::after {
        width: 24px;
    }
    .hero-description {
        font-size: 0.9rem;
    }
    .btn-outline {
        font-size: 0.8rem;
    }

    /* --- All Sections --- */
    .services, .education, .directors, .contact-cta {
        padding: 3.5rem 5%;
        width: 100%;
        box-sizing: border-box;
    }
    .section-title {
        font-size: 2rem;
    }
    .section-header {
        margin-bottom: 3rem;
    }

    /* --- Services Grid (stack on mobile) --- */
    .services-grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "card1"
            "card2"
            "card3"
            "card4";
        gap: 2rem;
    }
    .service-title {
        font-size: 1.3rem;
    }

    /* --- Education --- */
    .education {
        padding: 3.5rem 5%;
    }
    .education-header {
        margin-bottom: 2.5rem;
    }
    .education-intro {
        font-size: 0.95rem !important;
    }
    .education-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .edu-card {
        padding: 1.5rem;
    }
    .edu-card-title {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }
    .edu-table {
        gap: 1rem;
        margin-top: 1rem;
    }
    .edu-table-header {
        display: none;
    }
    .edu-table-row {
        flex-direction: column;
        gap: 0.3rem;
        padding-bottom: 1rem;
        border-bottom: 1px solid rgba(0,0,0,0.06);
    }
    .edu-col-prod {
        flex: 1;
        width: 100%;
    }
    .edu-col-alcance {
        flex: 1;
        width: 100%;
        font-size: 0.85em;
    }

    /* --- Directors --- */
    .directors {
        padding: 3.5rem 5%;
    }
    .directors-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .director-img {
        width: 60%;
        max-width: 250px;
    }
    .director-name {
        font-size: 1.5rem;
    }
    .director-desc {
        font-size: 0.85rem;
        max-width: 350px;
        margin: 0 auto;
    }

    /* --- Carousels --- */
    .carousel-section {
        padding: 3rem 0;
        overflow: hidden;
        width: 100%;
    }
    .carousel-title {
        font-size: 1.6rem;
        margin-bottom: 2rem;
        padding: 0 5%;
    }
    .carousel-container::before,
    .carousel-container::after {
        width: 40px;
    }
    .carousel-track {
        gap: 2.5rem;
    }
    .carousel-track img {
        height: 50px;
        max-width: 100px;
    }

    /* --- Contact CTA --- */
    .contact-cta {
        padding: 3rem 5%;
    }
    .contact-title {
        font-size: 1.6rem;
    }
    .contact-subtitle {
        font-size: 0.9rem;
    }
    .cta-btn {
        padding: 1rem 2.5rem;
        font-size: 0.9rem;
    }

    /* --- Footer --- */
    .footer {
        padding: 3rem 5% 2rem;
        width: 100%;
        box-sizing: border-box;
    }
    .footer-content {
        flex-direction: column;
        gap: 2.5rem;
        text-align: left;
        align-items: flex-start;
    }
    .footer-brand, .footer-links, .footer-contact {
        flex: 1 1 100%;
        width: 100%;
    }
    .footer-brand-desc {
        max-width: 100%;
    }
    .footer-img-logo {
        height: 45px;
    }
    .phone-number {
        font-size: 1.2rem;
    }
    .social-links {
        justify-content: flex-start;
    }
    .footer-bottom {
        font-size: 0.8rem;
        margin-top: 1rem;
    }

    /* --- WhatsApp --- */
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 1.5rem;
        right: 1.5rem;
    }
    .whatsapp-float svg {
        width: 26px;
        height: 26px;
    }
}

/* Small phones */
@media (max-width: 480px) {
    .hero-title,
    h1.hero-title {
        font-size: 1.6rem !important;
    }
    .hero-subtitle {
        font-size: 0.65rem;
        letter-spacing: 1.5px;
        gap: 0.4rem;
    }
    .hero-subtitle::before,
    .hero-subtitle::after {
        width: 16px;
    }
    .navbar {
        padding: 0.8rem 4%;
    }
    .nav-logo {
        height: 36px;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .edu-card {
        padding: 1.2rem;
    }
    .edu-card-title {
        font-size: 1.2rem;
    }
    .director-img {
        width: 70%;
        max-width: 220px;
    }
    .cta-btn {
        padding: 0.9rem 2rem;
        font-size: 0.85rem;
    }
    .empresas-hero-img {
        max-width: 250px;
    }
}