/* ==========================================================================
   CONCEPTO & FORMA - ESTUDIO DE ARQUITECTURA Y DISEÑO
   Hoja de Estilos CSS v5.2
   ========================================================================== */

:root {
    --bg-milk: #FBF7F4;
    --bg-oat: #E5DED2;
    --bg-charcoal: #232323;
    --bg-secondary: #F4EFEA;
    
    --text-primary: #232323;
    --text-milk: #FBF7F4;
    --text-mocha: #685D54;
    --text-muted: #685D54;
    
    --accent: #A39982;
    --accent-light: #E5DED2;
    --border-color: rgba(163, 153, 130, 0.25);
    
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --header-height: 90px;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 24px 48px rgba(0, 0, 0, 0.08);
}

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

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

body {
    background-color: var(--bg-milk);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body.no-scroll {
    overflow: hidden;
}

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

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

.container {
    width: 90%;
    max-width: 1320px;
    margin: 0 auto;
}

.section-padding {
    padding: 120px 0;
}

.bg-milk { background-color: var(--bg-milk); }
.bg-oat { background-color: var(--bg-oat); }
.bg-charcoal { background-color: var(--bg-charcoal); }

.text-milk { color: var(--text-milk); }
.text-charcoal { color: var(--text-primary); }
.text-mocha { color: var(--text-mocha); }
.text-taupe { color: var(--accent); }

/* CURSOR PERSONALIZADO */
.custom-cursor {
    width: 32px;
    height: 32px;
    border: 1px solid rgba(163, 153, 130, 0.5);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 99999;
    transform: translate(-50%, -50%);
    transition: transform 0.15s ease-out, width 0.3s ease, height 0.3s ease;
}

.custom-cursor-dot {
    width: 5px;
    height: 5px;
    background-color: var(--accent);
    border-radius: 50%;
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 999999;
    transform: translate(-50%, -50%);
}

.custom-cursor.cursor-hover {
    width: 48px;
    height: 48px;
    background-color: rgba(163, 153, 130, 0.1);
    border-color: var(--accent);
}

/* HEADER Y NAVEGACIÓN */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: var(--transition-smooth);
    background: transparent;
}

.site-header.scrolled {
    background: rgba(35, 35, 35, 0.92);
    backdrop-filter: blur(12px);
    height: 75px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-container {
    width: 90%;
    max-width: 1320px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link img {
    height: 28px;
    width: auto;
    transition: var(--transition-smooth);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    padding: 0.4rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--accent);
    transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
    color: #FFFFFF;
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    padding: 0.4rem 0;
    z-index: 1001;
}

.hamburger-line {
    width: 26px;
    height: 1.5px;
    background-color: #FFFFFF;
    transition: var(--transition-smooth);
}

/* HERO SECTION */
.hero-section {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(20,20,20,0.5) 0%, rgba(20,20,20,0.7) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 600px;
    padding: 0 1.5rem;
}

.hero-isotipo {
    width: 90px;
    height: auto;
    margin: 0 auto 1.5rem auto;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.hero-tagline {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--bg-milk);
    font-weight: 300;
}

.scroll-down-wrapper {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.scroll-down-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.7);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, rgba(255,255,255,0.8), rgba(255,255,255,0.1));
}

.scroll-text {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
}

/* SECCIÓN FILOSOFÍA */
.grid-philosophy {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: flex-start;
}

.section-subtitle {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--accent);
    display: block;
    margin-bottom: 0.8rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 300;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.philosophy-paragraph {
    font-size: 1.45rem;
    font-weight: 300;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 1.8rem;
}

.text-highlight { font-weight: 500; color: var(--text-primary); }
.text-highlight-secondary { font-style: italic; color: var(--text-mocha); }

.philosophy-subparagraph {
    font-size: 1.05rem;
    color: var(--text-mocha);
    line-height: 1.8;
}

/* SECCIÓN SERVICIOS (BENTO GRID) */
.services-section .section-header {
    margin-bottom: 4rem;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.8rem;
}

.bento-card {
    position: relative;
    background: #FFFFFF;
    border-radius: 8px;
    padding: 3rem 2.2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 320px;
}

.bento-card.bento-w2 {
    grid-column: span 2;
}

.bento-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent);
}

.bento-icon svg {
    width: 36px;
    height: 36px;
    stroke: var(--accent);
    margin-bottom: 1.5rem;
}

.bento-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.bento-desc {
    font-size: 0.95rem;
    color: var(--text-mocha);
    line-height: 1.6;
}

.bento-number {
    position: absolute;
    top: 1.5rem;
    right: 1.8rem;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 0.15em;
    color: rgba(163, 153, 130, 0.4);
}

/* PORTAFOLIO Y FILTROS */
.portfolio-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 3.5rem;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.filter-tabs {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.filter-tab {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.4rem;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-mocha);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.filter-tab:hover, .filter-tab.active {
    background-color: var(--bg-charcoal);
    color: var(--text-milk);
    border-color: var(--bg-charcoal);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.2rem;
}

.project-card {
    cursor: pointer;
    position: relative;
    border-radius: 6px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.project-img-wrapper {
    position: relative;
    width: 100%;
    height: 350px;
    overflow: hidden;
    border-radius: 6px;
    background-color: var(--bg-oat);
}

.project-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover !important;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(35, 35, 35, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
}

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

.project-view-btn {
    color: #FFFFFF;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    border: 1px solid rgba(255,255,255,0.7);
    padding: 0.7rem 1.6rem;
    border-radius: 30px;
}

.project-info { padding: 1.4rem 0.4rem 0.4rem 0.4rem; }

.project-cat {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    display: block;
    margin-bottom: 0.3rem;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

/* SOBRE NOSOTROS */
.grid-about {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-mocha);
    line-height: 1.8;
    margin-top: 1.5rem;
}

.about-image {
    width: 100%;
    height: 480px;
    object-fit: cover;
    border-radius: 6px;
    box-shadow: var(--shadow-soft);
}

/* CONTACTO */
.grid-contact {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
}

.contact-details {
    margin: 3rem 0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.detail-label {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    color: var(--accent);
    display: block;
    margin-bottom: 0.4rem;
}

.detail-val, .detail-link {
    font-size: 1.1rem;
    color: var(--text-milk);
}

.detail-link:hover { color: var(--accent); }

.contact-social-icons {
    display: flex;
    gap: 1.2rem;
    margin-top: 0.5rem;
}

.contact-social-icon {
    color: rgba(255,255,255,0.7);
    transition: var(--transition-smooth);
}

.contact-social-icon:hover {
    color: #FFFFFF;
    transform: translateY(-2px);
}

.footer-logo {
    height: 32px;
    width: auto;
    margin-top: 2rem;
}

/* FORMULARIO MINIMALISTA */
.minimal-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    position: relative;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem 0;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-milk);
    outline: none;
    transition: var(--transition-smooth);
}

.form-group select {
    color: var(--text-milk);
    cursor: pointer;
}

.form-group select option {
    background-color: var(--bg-charcoal);
    color: var(--text-milk);
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 0;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.5);
    pointer-events: none;
    transition: var(--transition-smooth);
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label {
    top: -12px;
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-bottom-color: var(--accent);
}

.submit-btn {
    align-self: flex-start;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--text-milk);
    padding: 1rem 2.5rem;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-smooth);
    margin-top: 1rem;
}

.submit-btn:hover {
    background-color: var(--accent);
    color: var(--bg-charcoal);
}

.form-status {
    margin-top: 1rem;
    font-size: 0.9rem;
    padding: 0.8rem 1rem;
    border-radius: 4px;
    display: none;
}

.form-status.success {
    background: rgba(46, 125, 50, 0.2);
    color: #81c784;
    border: 1px solid #2e7d32;
}

.form-status.error {
    background: rgba(198, 40, 40, 0.2);
    color: #e57373;
    border: 1px solid #c62828;
}

/* FOOTER */
.site-footer {
    padding: 2.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.copyright {
    font-size: 0.85rem;
    color: var(--text-mocha);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    color: var(--text-mocha);
    transition: var(--transition-smooth);
}

.social-link:hover {
    color: var(--accent);
}

/* LIGHTBOX MODAL */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 15, 15, 0.92);
    backdrop-filter: blur(16px);
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2.5rem;
    background: none;
    border: none;
    color: #FFFFFF;
    font-size: 2.5rem;
    cursor: pointer;
    z-index: 100002;
    transition: var(--transition-smooth);
}

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

.lightbox-content {
    position: relative;
    z-index: 100001;
    width: 92%;
    max-width: 1400px;
    height: 85vh;
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr) !important;
    background-color: var(--bg-charcoal);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 32px 64px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.lightbox-sidebar {
    padding: 3.5rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    background-color: rgba(25, 25, 25, 0.95);
}

.lightbox-category {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
}

.lightbox-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--text-milk);
    margin: 0.8rem 0 1.5rem 0;
}

.lightbox-desc {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.lightbox-nav-instructions {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 1.5rem;
}

.nav-key {
    display: inline-block;
    padding: 2px 6px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 3px;
    margin: 0 2px;
}

.lightbox-viewer {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: #121212;
    min-width: 0 !important;
    overflow: hidden !important;
    position: relative !important;
}

.lightbox-main-media {
    flex: 1;
    position: relative !important;
    width: 100% !important;
    min-width: 0 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow: hidden;
}

.lightbox-media-wrapper {
    max-width: 100%;
    max-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-media-wrapper img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain !important;
    border-radius: 4px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.lightbox-video-wrapper {
    display: none;
    width: 100%;
    max-width: 900px;
}

.lightbox-video-wrapper video {
    width: 100%;
    max-height: 70vh;
    border-radius: 4px;
    outline: none;
}

.lightbox-prev, .lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5) !important;
    border: 1px solid rgba(255, 255, 255, 0.5) !important;
    color: #FFFFFF !important;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.8rem;
    cursor: pointer;
    display: flex !important;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    transition: var(--transition-smooth);
    z-index: 100005 !important;
}

.lightbox-prev:hover, .lightbox-next:hover {
    background: #FFFFFF !important;
    color: var(--text-primary) !important;
}

.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 20px !important; }

.lightbox-thumbnails {
    height: 90px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    gap: 12px;
    padding: 12px 24px;
    overflow-x: auto;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.thumb-item {
    height: 66px;
    aspect-ratio: 1 / 1;
    cursor: pointer;
    border-radius: 4px;
    overflow: hidden;
    opacity: 0.5;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
    flex-shrink: 0;
}

.thumb-item.active, .thumb-item:hover {
    opacity: 1;
    border-color: var(--accent);
}

.thumb-item img, .thumb-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* REVEAL ANIMATIONS SAFEGUARD: VISIBLE BY DEFAULT */
.reveal-element {
    opacity: 1 !important;
    transform: translateY(0) !important;
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@media (max-width: 1024px) {
    .grid-philosophy, .grid-about, .grid-contact { grid-template-columns: 1fr; gap: 3rem; }
    .bento-grid { grid-template-columns: repeat(2, 1fr); }
    .bento-card.bento-w2 { grid-column: span 2; }
    
    /* CORRECCIÓN GALERÍA MÓVIL: Imagen arriba, texto abajo y scrolleable */
    .lightbox-content { 
        display: flex !important;
        flex-direction: column-reverse !important; 
        overflow-y: auto !important;
        height: 90vh;
    }
    .lightbox-sidebar { 
        padding: 2rem 1.5rem; 
        border-right: none;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        flex: none;
    }
    .lightbox-viewer { 
        height: 55vh; 
        flex: none;
    }
    .lightbox-main-media { padding: 1rem; }
    .lightbox-media-wrapper img { max-height: 100%; }
    .lightbox-prev { left: 0.5rem; }
    .lightbox-next { right: 0.5rem !important; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .menu-toggle { display: flex; }
    .bento-grid { grid-template-columns: 1fr; }
    .bento-card.bento-w2 { grid-column: span 1; }
    .portfolio-grid { grid-template-columns: 1fr; }
    .portfolio-header { flex-direction: column; align-items: flex-start; }
}