/* ============================================
   B3 Construcción - Estilo inspirado en Estudio María Santos
   Tipografía elegante, minimalismo, espacios blancos
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400;1,500&family=Montserrat:wght@300;400;500&display=swap');

/* ---- Reset & Base ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', sans-serif;
    font-weight: 300;
    color: #4a4a4a;
    background-color: #fff;
    line-height: 1.7;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

a:hover {
    opacity: 0.6;
}

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

/* ---- Header / Navigation ---- */
.site-header {
    padding: 40px 0 0;
    text-align: center;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-container {
    margin-bottom: 30px;
}

.logo-container img {
    height: 80px;
    margin: 0 auto;
}

.logo-img {
    height: 80px;
    width: auto;
    margin: 0 auto;
}

.logo-text {
    font-family: 'Cormorant Garamond', serif;
    font-size: 56px;
    font-weight: 300;
    letter-spacing: 4px;
    color: #1a1a1a;
    line-height: 1;
}

.logo-text span {
    display: block;
    font-size: 14px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 300;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: #888;
    margin-top: 6px;
}

nav.main-nav {
    padding: 20px 0 0;
}

nav.main-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 60px;
}

nav.main-nav ul li a {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 1.5px;
    color: #4a4a4a;
    text-transform: none;
    padding-bottom: 8px;
    border-bottom: 1.5px solid transparent;
    transition: border-color 0.3s ease, opacity 0.3s ease;
}

nav.main-nav ul li a:hover {
    opacity: 1;
    border-bottom-color: #4a4a4a;
}

nav.main-nav ul li a.active {
    border-bottom-color: #4a4a4a;
    color: #1a1a1a;
}

.nav-divider {
    width: 100%;
    height: 1px;
    background: #e8e8e8;
    margin-top: 20px;
}

/* ---- Burger Menu (Mobile) ---- */
.burger-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1100;
    position: relative;
}

.burger-btn span {
    display: block;
    width: 28px;
    height: 2px;
    background: #1a1a1a;
    margin: 6px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.burger-btn.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.burger-btn.open span:nth-child(2) {
    opacity: 0;
}

.burger-btn.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.97);
    z-index: 1050;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.mobile-nav-overlay.open {
    display: flex;
    opacity: 1;
}

.mobile-nav-overlay ul {
    list-style: none;
    text-align: center;
    padding: 0;
}

.mobile-nav-overlay ul li {
    margin: 20px 0;
}

.mobile-nav-overlay ul li a {
    font-family: 'Cormorant Garamond', serif;
    font-size: 32px;
    font-weight: 300;
    color: #1a1a1a;
    letter-spacing: 2px;
    transition: opacity 0.3s ease;
}

.mobile-nav-overlay ul li a:hover {
    opacity: 0.5;
}

.mobile-nav-overlay ul li a.active {
    border-bottom: 1px solid #1a1a1a;
    padding-bottom: 4px;
}

/* ---- Page Title (El Estudio style) ---- */
.page-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 48px;
    font-weight: 300;
    font-style: italic;
    color: #1a1a1a;
    margin-bottom: 50px;
}

/* ---- Projects Grid (Home) ---- */
.projects-section {
    padding: 60px 80px 80px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 1300px;
    margin: 0 auto;
}

.project-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: auto;
}

.project-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, filter 0.6s ease;
}

.project-card:hover img {
    transform: scale(1.03);
}

.project-card .project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay h3 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 22px;
    font-weight: 400;
    color: #1a1a1a;
    letter-spacing: 1px;
}

/* ---- Equipo / About Section ---- */
.equipo-section {
    padding: 60px 80px 80px;
    max-width: 1300px;
    margin: 0 auto;
}

.equipo-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 80px;
}

.equipo-hero .hero-image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.equipo-hero .hero-text {
    padding-top: 20px;
}

.equipo-hero .hero-text h2 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 32px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 30px;
    font-variant-numeric: lining-nums;
}

.equipo-hero .hero-text p {
    font-size: 15px;
    line-height: 1.9;
    color: #5a5a5a;
    margin-bottom: 20px;
}

.equipo-content {
    max-width: 900px;
    margin: 0 auto;
}

.equipo-content p {
    font-size: 15px;
    line-height: 1.9;
    color: #5a5a5a;
    margin-bottom: 20px;
}

/* Section subtitle */
.section-subtitle {
    font-family: 'Cormorant Garamond', serif;
    font-size: 36px;
    font-weight: 300;
    font-style: italic;
    color: #1a1a1a;
    margin: 60px 0 30px;
}

/* Mission / Visión Cards */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin-top: 60px;
}

.value-card {
    text-align: center;
    padding: 40px 20px;
}

.value-card h3 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 28px;
    font-weight: 400;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.value-card p {
    font-size: 14px;
    line-height: 1.9;
    color: #6a6a6a;
}

.value-card .divider {
    width: 40px;
    height: 1px;
    background: #c8b89e;
    margin: 0 auto 25px;
}

/* ---- Servicios ---- */
.servicios-section {
    padding: 60px 80px 80px;
    max-width: 1300px;
    margin: 0 auto;
}

.servicios-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    margin-top: 50px;
}

.servicio-category {
    padding: 0;
}

.servicio-category h3 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 26px;
    font-weight: 400;
    color: #1a1a1a;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0d8cf;
}

.servicio-category ul {
    list-style: none;
    padding: 0;
}

.servicio-category ul li {
    font-size: 14px;
    color: #5a5a5a;
    padding: 10px 0;
    border-bottom: 1px solid #f0ece6;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.servicio-category ul li:hover {
    color: #1a1a1a;
    padding-left: 10px;
}

/* ---- Contacto ---- */
.contacto-section {
    padding: 60px 80px 80px;
    max-width: 1300px;
    margin: 0 auto;
}

.contacto-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contacto-image {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
}

.contacto-info {
    padding-top: 20px;
}

.contacto-info .logo-contact {
    text-align: center;
    margin-bottom: 40px;
}

.contacto-info .logo-contact .logo-img-contact {
    max-width: 120px;
    margin: 0 auto;
}

.contacto-details {
    text-align: center;
}

.contacto-details p {
    font-size: 14px;
    color: #5a5a5a;
    margin-bottom: 12px;
    line-height: 1.6;
}

.contacto-details a {
    color: #5a5a5a;
}

.contacto-details a:hover {
    color: #1a1a1a;
    opacity: 1;
}

/* Contact Form */
.contact-form {
    margin-top: 40px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 0;
    border: none;
    border-bottom: 1px solid #ddd;
    background: transparent;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 300;
    color: #4a4a4a;
    outline: none;
    transition: border-color 0.3s ease;
    margin-bottom: 5px;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-bottom-color: #1a1a1a;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: #aaa;
    font-weight: 300;
}

.contact-form textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form button {
    margin-top: 25px;
    padding: 12px 45px;
    background: transparent;
    border: 1px solid #1a1a1a;
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #1a1a1a;
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease;
}

.contact-form button:hover {
    background: #1a1a1a;
    color: #fff;
}

/* Map */
.map-container {
    margin-top: 40px;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
    filter: grayscale(100%);
    transition: filter 0.4s ease;
}

.map-container iframe:hover {
    filter: grayscale(0%);
}

/* ---- Footer ---- */
.site-footer {
    text-align: center;
    padding: 50px 0;
    border-top: 1px solid #e8e8e8;
    margin-top: 40px;
}

.footer-tagline {
    font-family: 'Cormorant Garamond', serif;
    font-size: 16px;
    font-style: italic;
    color: #888;
    margin-bottom: 15px;
}

.footer-copyright {
    font-size: 11px;
    color: #aaa;
    letter-spacing: 1px;
}

/* WhatsApp Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    z-index: 9999;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    opacity: 1;
}

.whatsapp-btn svg {
    width: 28px;
    height: 28px;
    fill: #fff;
}

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 100px;
    width: 40px;
    height: 40px;
    background: rgba(26, 26, 26, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

.back-to-top svg {
    width: 16px;
    height: 16px;
    fill: #4a4a4a;
}

/* ---- Animations ---- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-section,
    .equipo-section,
    .servicios-section,
    .contacto-section {
        padding: 40px 40px 60px;
    }

    nav.main-nav ul {
        gap: 35px;
    }

    .equipo-hero {
        gap: 40px;
    }

    .values-grid {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .logo-text {
        font-size: 42px;
    }

    /* Hide desktop nav, show burger */
    nav.main-nav ul {
        display: none;
    }

    .burger-btn {
        display: block;
        margin: 0 auto;
    }

    .nav-divider {
        margin-top: 10px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .projects-section,
    .equipo-section,
    .servicios-section,
    .contacto-section {
        padding: 30px 25px 50px;
    }

    .page-title {
        font-size: 36px;
    }

    .equipo-hero {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .servicios-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contacto-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .values-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section-subtitle {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 34px;
    }

    nav.main-nav ul {
        gap: 18px;
    }

    .site-header {
        padding: 25px 0 0;
    }
}

/* ---- Proyecto Detalle (Individual Project Page) ---- */
.proyecto-detalle {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 80px 80px;
}

.proyecto-hero {
    width: 100%;
    margin-bottom: 60px;
}

.proyecto-hero img {
    width: 100%;
    max-height: 70vh;
    object-fit: cover;
}

.proyecto-header {
    margin-bottom: 50px;
}

.proyecto-titulo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 48px;
    font-weight: 300;
    font-style: italic;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.proyecto-meta {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.proyecto-meta span {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 300;
    color: #888;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding-right: 30px;
    border-right: 1px solid #e0d8cf;
}

.proyecto-meta span:last-child {
    border-right: none;
    padding-right: 0;
}

.proyecto-descripcion {
    max-width: 800px;
    margin-bottom: 60px;
}

.proyecto-descripcion p {
    font-size: 15px;
    line-height: 1.9;
    color: #5a5a5a;
    margin-bottom: 20px;
}

.proyecto-galeria {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 60px;
}

.galeria-row {
    display: grid;
    gap: 25px;
}

.galeria-row.cols-2 {
    grid-template-columns: 1fr 1fr;
}

.galeria-row.cols-1 {
    grid-template-columns: 1fr;
}

.galeria-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 768px) {
    .galeria-row.cols-2 {
        grid-template-columns: 1fr;
    }
}

.proyecto-nav {
    padding-top: 40px;
    border-top: 1px solid #e8e8e8;
}

.proyecto-nav a {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 400;
    letter-spacing: 1px;
    color: #4a4a4a;
    transition: color 0.3s ease;
}

.proyecto-nav a:hover {
    color: #1a1a1a;
    opacity: 1;
}

/* Make project cards clickable links */
a.project-card {
    display: block;
    text-decoration: none;
    color: inherit;
}

@media (max-width: 768px) {
    .proyecto-detalle {
        padding: 0 25px 50px;
    }

    .proyecto-titulo {
        font-size: 36px;
    }

    .proyecto-meta {
        gap: 15px;
    }

    .proyecto-meta span {
        padding-right: 15px;
    }
}