/* ==========================================================================
   pintocasas.cl - Estilos de Diseño Premium
   Cliente: Carlos Marchant - Pintura Profesional y Terminaciones
   ========================================================================== */

/* --- Importación de Fuentes Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800;900&display=swap');

/* --- Sistema de Diseño (Variables CSS) --- */
:root {
    /* Paleta de Colores Principal */
    --color-primary: #0f172a;       /* Slate 900 - Fondo base oscuro */
    --color-primary-light: #1e293b; /* Slate 800 - Fondo secundario oscuro */
    --color-primary-dark: #020617;  /* Slate 950 - Fondo profundo */
    
    /* Acentos y Destacados */
    --color-accent: #d97706;        /* Amber 600 - Dorado corporativo principal */
    --color-accent-hover: #b45309;  /* Amber 700 - Dorado oscuro para hover */
    --color-accent-light: #f59e0b;  /* Amber 500 - Dorado vibrante */
    --color-accent-glow: rgba(217, 119, 6, 0.15);
    --color-accent-subtle: #fef3c7; /* Amber 100 - Fondo de tarjetas claro */

    /* Tonos Neutros */
    --color-text-dark: #0f172a;     /* Texto principal en fondo claro */
    --color-text-muted: #475569;    /* Texto secundario en fondo claro */
    --color-text-light: #f8fafc;    /* Texto principal en fondo oscuro */
    --color-text-light-muted: #94a3b8; /* Texto secundario en fondo oscuro */
    
    --color-bg-light: #ffffff;      /* Fondo claro principal */
    --color-bg-light-sec: #f8fafc;  /* Fondo claro secundario (Slate 50) */
    --color-border-light: #e2e8f0;  /* Borde claro (Slate 200) */
    --color-border-dark: rgba(255, 255, 255, 0.08);

    /* Estado de feedback */
    --color-success: #10b981;       /* Emerald 500 */
    --color-success-bg: #ecfdf5;    /* Emerald 50 */
    --color-error: #ef4444;         /* Red 500 */
    
    /* Tipografías */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Sombras Elevadas (Premium) */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.12);
    --shadow-gold: 0 10px 20px -5px rgba(217, 119, 6, 0.3);
    
    /* Transiciones fluidas */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Bordes y Esquinas */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

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

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

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

/* --- Contenedores y Diseños Base --- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 100px 0;
    position: relative;
}

.section-dark {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.section-light-sec {
    background-color: var(--color-bg-light-sec);
}

/* --- Encabezados de Sección --- */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-subtitle {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
    display: inline-block;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    color: inherit;
    line-height: 1.25;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

.section-dark .section-header p {
    color: var(--color-text-light-muted);
}

/* --- Botones Premium --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background-color: var(--color-accent);
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-dark {
    background-color: var(--color-primary);
    color: #ffffff;
    border: 1px solid var(--color-border-dark);
}

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

.btn-light {
    background-color: #ffffff;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-light:hover {
    background-color: var(--color-bg-light-sec);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-whatsapp {
    background-color: #25d366;
    color: #ffffff;
}

.btn-whatsapp:hover {
    background-color: #128c7e;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(37, 211, 102, 0.3);
}

/* --- Header / Barra de Navegación --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-normal);
    background-color: transparent;
}

.header-scrolled {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--color-border-dark);
    padding: 12px 0;
}

.header-scrolled-light {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid var(--color-border-light);
    padding: 12px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    transition: var(--transition-normal);
}

.header-scrolled .container {
    padding: 10px 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: var(--transition-normal);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    flex-shrink: 0;
    transition: var(--transition-normal);
    filter: drop-shadow(0 4px 6px rgba(217, 119, 6, 0.25));
}

.logo:hover .logo-icon {
    transform: rotate(-5deg) scale(1.08);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 900;
    letter-spacing: 0.5px;
    color: #ffffff;
    line-height: 1.1;
    transition: var(--transition-normal);
}

.logo-main span {
    color: var(--color-accent-light);
    transition: var(--transition-normal);
}

.logo-sub {
    font-family: var(--font-heading);
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-text-light-muted);
    text-transform: uppercase;
    margin-top: 2px;
    transition: var(--transition-normal);
}

.header-scrolled .logo-sub {
    color: var(--color-accent);
}

.header-scrolled-light .logo-main {
    color: var(--color-primary);
}

.header-scrolled-light .logo-sub {
    color: var(--color-text-muted);
}

/* Navegación Desktop */
.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
    position: relative;
    padding: 6px 0;
}

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

.nav-link:hover {
    color: #ffffff;
}

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

.header-scrolled-light .nav-link {
    color: var(--color-text-muted);
}

.header-scrolled-light .nav-link:hover {
    color: var(--color-primary);
}

.nav-cta {
    margin-left: 16px;
}

/* Menú Burger Móvil */
.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.burger-bar {
    width: 100%;
    height: 2px;
    background-color: #ffffff;
    transition: var(--transition-normal);
}

.header-scrolled-light .burger-bar {
    background-color: var(--color-primary);
}

.burger-active .burger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.burger-active .burger-bar:nth-child(2) {
    opacity: 0;
}

.burger-active .burger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, rgba(9, 13, 22, 0.85) 0%, rgba(15, 23, 42, 0.92) 50%, rgba(30, 41, 59, 0.95) 100%),
                url('fotografias_trabajos/Proyecto_casa_de_lo_barnechea/WhatsApp Image 2026-06-12 at 12.06.07 PM (1).jpeg');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 120px;
    overflow: hidden;
}

/* Círculos de Brillo de Fondo */
.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(217, 119, 6, 0.08) 0%, rgba(217, 119, 6, 0) 70%);
    top: -10%;
    right: -10%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.05) 0%, rgba(245, 158, 11, 0) 70%);
    bottom: -10%;
    left: -10%;
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    color: #ffffff;
}

.hero-tag {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-accent-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-tag::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 2px;
    background-color: var(--color-accent-light);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title span {
    color: var(--color-accent-light);
    background: linear-gradient(to right, #fbbf24, #d97706);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--color-text-light-muted);
    margin-bottom: 40px;
    max-width: 580px;
    line-height: 1.65;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 40px;
}

.hero-features {
    display: flex;
    gap: 32px;
    border-top: 1px solid var(--color-border-dark);
    padding-top: 32px;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--color-text-light-muted);
}

.hero-feature-item svg {
    color: var(--color-accent-light);
    flex-shrink: 0;
}

/* Imagen Hero Premium */
.hero-image-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl), 0 0 40px rgba(217, 119, 6, 0.1);
    border: 1px solid var(--color-border-dark);
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
    transition: var(--transition-slow);
    max-width: 100%;
}

.hero-image-wrapper:hover {
    transform: perspective(1000px) rotateY(-3deg) rotateX(2deg) translateY(-8px);
    box-shadow: var(--shadow-xl), 0 0 50px rgba(217, 119, 6, 0.2);
}

.hero-image-wrapper img {
    display: block;
    width: 100%;
    max-width: 480px;
    height: auto;
    object-fit: cover;
}

/* Flotantes Decorativos */
.hero-badge-float {
    position: absolute;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 10;
    animation: float 6s ease-in-out infinite;
}

.hero-badge-float-1 {
    top: 10%;
    left: -10%;
}

.hero-badge-float-2 {
    bottom: 12%;
    right: -5%;
    animation-delay: 3s;
}

.badge-float-icon {
    width: 40px;
    height: 40px;
    background-color: var(--color-accent-glow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-light);
    font-size: 1.25rem;
    font-weight: 700;
}

.badge-float-content {
    display: flex;
    flex-direction: column;
}

.badge-float-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: #ffffff;
}

.badge-float-subtitle {
    font-size: 0.75rem;
    color: var(--color-text-light-muted);
}

/* --- Banner de Estadísticas (Stats) --- */
.stats {
    background-color: var(--color-primary-dark);
    border-bottom: 1px solid var(--color-border-dark);
    padding: 50px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
    margin-bottom: 8px;
    background: linear-gradient(to right, #ffffff, var(--color-accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-light-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

/* --- Sección Sobre Mí --- */
.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 70px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border-light);
    display: block;
}

.about-experience-card {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    max-width: 200px;
    border: 1px solid var(--color-border-dark);
}

.about-exp-years {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent-light);
    line-height: 1;
    margin-bottom: 4px;
}

.about-exp-text {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-text-light-muted);
}

.about-content h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-primary);
}

.about-text {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.about-text p {
    margin-bottom: 16px;
}

.about-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 35px;
}

.about-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    color: var(--color-primary);
}

.about-list-item svg {
    color: var(--color-accent);
}

/* --- Sección Servicios --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 40px;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--color-accent);
    transform: scaleY(0);
    transition: var(--transition-normal);
    transform-origin: bottom;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleY(1);
}

.service-icon-box {
    width: 60px;
    height: 60px;
    background-color: var(--color-accent-subtle);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    transition: var(--transition-normal);
}

.service-card:hover .service-icon-box {
    background-color: var(--color-accent);
    color: #ffffff;
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    flex-grow: 1;
    line-height: 1.6;
}

.service-card-wide {
    grid-column: span 3;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 30px;
    align-items: center;
    padding: 30px 40px;
}

.service-card-wide .service-icon-box {
    margin-bottom: 0;
}

/* --- Sección Portafolio Interactivo --- */
.portfolio-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 50px;
}

.filter-btn {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    background-color: #ffffff;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-light);
    padding: 10px 20px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* Contenedor de Galería */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.portfolio-item {
    background-color: #ffffff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-normal);
    opacity: 1;
    transform: scale(1);
}

.portfolio-item.hidden {
    display: none;
    opacity: 0;
    transform: scale(0.9);
}

.portfolio-img-box {
    position: relative;
    padding-top: 75%; /* 4:3 Aspect Ratio */
    overflow: hidden;
    cursor: pointer;
    background-color: #f1f5f9;
}

.portfolio-img-box img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.portfolio-item:hover .portfolio-img-box img {
    transform: scale(1.08);
}

/* Overlay en Hover */
.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.4) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: var(--transition-normal);
}

.portfolio-img-box:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-zoom-icon {
    align-self: center;
    margin-bottom: auto;
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.25rem;
    transition: var(--transition-normal);
    transform: scale(0.8);
}

.portfolio-img-box:hover .portfolio-zoom-icon {
    transform: scale(1);
}

.portfolio-overlay-category {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 6px;
}

.portfolio-overlay-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: #ffffff;
}

/* Cuerpo de la Tarjeta del Portafolio */
.portfolio-info {
    padding: 24px;
}

.portfolio-header-box {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.portfolio-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
}

.portfolio-location {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 16px;
}

.portfolio-location svg {
    color: var(--color-accent);
}

.portfolio-gps {
    font-family: var(--font-body);
    font-size: 0.75rem;
    background-color: var(--color-bg-light-sec);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.portfolio-gps-val {
    font-weight: 600;
    color: var(--color-primary);
}

.portfolio-gps-val span {
    color: var(--color-accent);
}

.portfolio-map-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-accent);
    text-decoration: none;
    transition: var(--transition-fast);
}

.portfolio-map-btn:hover {
    color: var(--color-accent-hover);
}

/* --- Sección Formulario y Contacto --- */
.contact {
    background: linear-gradient(135deg, rgba(9, 13, 22, 0.9) 0%, rgba(15, 23, 42, 0.93) 100%),
                url('fotografias_trabajos/proyecto_vitacura/WhatsApp Image 2026-06-12 at 12.06.11 PM (1).jpeg');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 70px;
    align-items: flex-start;
}

/* Información de Contacto lateral */
.contact-sidebar {
    background-color: var(--color-primary-light);
    border-radius: var(--radius-lg);
    padding: 50px 40px;
    color: #ffffff;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border-dark);
}

.contact-sidebar h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: #ffffff;
}

.contact-sidebar p {
    color: var(--color-text-light-muted);
    font-size: 1rem;
    margin-bottom: 40px;
    line-height: 1.6;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin-bottom: 40px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.contact-info-icon {
    width: 46px;
    height: 46px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-light);
    font-size: 1.15rem;
    flex-shrink: 0;
}

.contact-info-content h4 {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-light-muted);
    margin-bottom: 4px;
}

.contact-info-content p,
.contact-info-content a {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    transition: var(--transition-fast);
}

.contact-info-content a:hover {
    color: var(--color-accent-light);
}

.contact-badge {
    background-color: var(--color-accent-glow);
    border: 1px solid rgba(217, 119, 6, 0.3);
    color: var(--color-accent-light);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    line-height: 1.5;
}

.contact-badge strong {
    font-family: var(--font-heading);
    font-weight: 700;
}

/* Formulario Cotizador Interactiva */
.estimator-card {
    background-color: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 50px;
    box-shadow: var(--shadow-xl);
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

.form-label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    padding: 14px 16px;
    background-color: var(--color-bg-light-sec);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    transition: var(--transition-normal);
}

.form-control:focus {
    outline: none;
    background-color: #ffffff;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-error-msg {
    font-size: 0.75rem;
    color: var(--color-error);
    margin-top: 4px;
    display: none;
}

/* Formulario Estados de Éxito */
.estimator-success {
    display: none;
    text-align: center;
    padding: 40px 0;
}

.success-icon-box {
    width: 80px;
    height: 80px;
    background-color: var(--color-success-bg);
    border-radius: 50%;
    color: var(--color-success);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 24px;
    animation: scaleIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.estimator-success h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.estimator-success p {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.success-ctas {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* --- Footer --- */
.footer {
    background-color: var(--color-primary-dark);
    color: var(--color-text-light-muted);
    padding: 60px 0 30px 0;
    border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: #ffffff;
    margin-bottom: 24px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-text-light-muted);
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 0.9375rem;
}

.footer-links a:hover {
    color: #ffffff;
    padding-left: 4px;
}

.footer-contact-info {
    font-size: 0.9375rem;
}

.footer-contact-info p {
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact-info strong {
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid var(--color-border-dark);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 36px;
    height: 36px;
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-border-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light-muted);
    transition: var(--transition-normal);
    text-decoration: none;
}

.social-link:hover {
    background-color: var(--color-accent);
    color: #ffffff;
    transform: translateY(-2px);
}

/* --- Native Lightbox Modal --- */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(9, 13, 22, 0.98);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content-box {
    position: relative;
    max-width: 90%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-img {
    max-width: 100%;
    max-height: 75vh;
    border-radius: var(--radius-md);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    object-fit: contain;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox.active .lightbox-img {
    transform: scale(1);
}

.lightbox-caption {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    margin-top: 20px;
    text-align: center;
}

.lightbox-subcaption {
    font-size: 0.8125rem;
    color: var(--color-text-light-muted);
    margin-top: 4px;
}

/* Controles del Lightbox */
.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.lightbox-close:hover {
    color: var(--color-accent-light);
    transform: scale(1.1);
}

.lightbox-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-normal);
    z-index: 10;
}

.lightbox-btn:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-gold);
}

.lightbox-prev {
    left: -80px;
}

.lightbox-next {
    right: -80px;
}

/* --- Animaciones CSS --- */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animación de entrada de scroll (con JS IntersectionObserver) */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ==========================================================================
   Media Queries (Responsive)
   ========================================================================== */
@media (max-width: 1200px) {
    .lightbox-prev { left: -40px; }
    .lightbox-next { right: -40px; }
}

@media (max-width: 1024px) {
    section { padding: 80px 0; }
    .hero-title { font-size: 3rem; }
    .hero-grid, .about-grid, .contact-grid { gap: 40px; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .service-card-wide { grid-column: span 2; }
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .header .container { padding: 16px 24px; }
    .burger-menu { display: flex; }
    
    /* Menú móvil expandido */
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-primary-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transition: var(--transition-normal);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
        z-index: 1000;
        border-left: 1px solid var(--color-border-dark);
    }
    
    .nav.nav-active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
    }
    
    .nav-cta {
        margin-left: 0;
        width: 80%;
    }
    
    .hero, .contact {
        background-attachment: scroll;
    }
    
    .hero {
        padding-top: 100px;
        min-height: auto;
        padding-bottom: 80px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-ctas {
        justify-content: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-image-wrapper {
        transform: none;
        max-width: 380px;
    }
    
    .hero-image-wrapper:hover {
        transform: translateY(-5px);
    }
    
    .hero-badge-float {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 20px;
    }
    
    .about-grid, .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        max-width: 100%;
        margin: 0 auto 40px auto;
    }
    
    .about-experience-card {
        position: relative;
        bottom: 0;
        right: 0;
        margin: 20px auto 0 auto;
        max-width: 280px;
        text-align: center;
    }
    
    .estimator-card {
        padding: 30px 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column-reverse;
        gap: 20px;
        text-align: center;
    }
    
    .lightbox-prev, .lightbox-next {
        display: none; /* Ocultar flechas en móvil, deslizar o usar botones flotantes */
    }
}

@media (max-width: 576px) {
    .hero-title { font-size: 2.25rem; }
    .services-grid, .portfolio-grid { grid-template-columns: 1fr; }
    .service-card-wide {
        grid-column: span 1;
        grid-template-columns: 1fr;
        text-align: center;
    }
    .service-card-wide .service-icon-box { margin-left: auto; margin-right: auto; }
    .form-group-row { grid-template-columns: 1fr; gap: 0; }
    .hero-badge-float { display: none; } /* ocultar insignias en pantallas muy chicas */
    .contact-sidebar { padding: 30px 20px; }
    
    .portfolio-gps {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        padding: 10px 14px;
    }
}