/* ==========================================================================
   ALAN DE SANTIAGO | FOTOGRAFÍA & CINE DOCUMENTAL
   Diseño: Luxury Editorial Dark & Champagne Gold
   ========================================================================== */

:root {
    /* Paleta Cromática Luxury */
    --bg-main: #0c0b0e;
    --bg-surface: #141318;
    --bg-card: #1a1921;
    --bg-card-hover: #22202b;
    --border-subtle: rgba(212, 175, 55, 0.15);
    --border-gold: rgba(212, 175, 55, 0.35);
    --border-gold-bright: #d4af37;
    
    /* Dorados y Metálicos */
    --oro-champagne: #d4af37;
    --oro-calido: #e5c158;
    --oro-claro: #f4e3b2;
    --oro-oscuro: #9d7c2a;
    --oro-glow: rgba(212, 175, 55, 0.22);
    
    /* Textos */
    --texto-blanco: #ffffff;
    --texto-marfil: #f5f2eb;
    --texto-atenuado: #a8a4b2;
    --texto-oscuro: #121212;
    
    /* Acentos y Sombras */
    --sombra-card: 0 12px 36px rgba(0, 0, 0, 0.45);
    --sombra-hover: 0 20px 50px rgba(0, 0, 0, 0.65), 0 0 25px rgba(212, 175, 55, 0.15);
    --sombra-oro: 0 8px 24px rgba(212, 175, 55, 0.35);
    --max-width: 1240px;
    --radio-card: 20px;
    --transicion: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset y Base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    color-scheme: dark;
}

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-main);
    color: var(--texto-marfil);
    line-height: 1.65;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 10%, rgba(212, 175, 55, 0.04) 0%, transparent 45%),
        radial-gradient(circle at 85% 60%, rgba(212, 175, 55, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(22, 20, 29, 0.6) 0%, transparent 60%);
    background-attachment: fixed;
}

a {
    color: inherit;
    text-decoration: none;
}

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

/* ==========================================================================
   HEADER & NAVEGACIÓN
   ========================================================================== */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(12, 11, 14, 0.82);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 14px 28px;
    transition: var(--transicion);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.brand-logo:hover {
    transform: scale(1.03);
}

.brand-logo img {
    height: 52px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(212, 175, 55, 0.3));
}

.nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 28px;
    list-style: none;
}

.nav-links a {
    color: var(--texto-marfil);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    position: relative;
    padding: 6px 0;
    transition: color 0.25s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1.5px;
    background: var(--oro-champagne);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--oro-champagne);
}

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

.btn-wa-header {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    background: linear-gradient(135deg, #25d366 0%, #1ea952 100%);
    color: #fff !important;
    padding: 10px 22px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: 0 4px 18px rgba(37, 211, 102, 0.32);
    transition: var(--transicion);
}

.btn-wa-header::after {
    display: none !important;
}

.btn-wa-header:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
    background: linear-gradient(135deg, #2ae16f 0%, #1ea952 100%);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    background: rgba(26, 25, 33, 0.8);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transicion);
}

.nav-toggle:hover {
    border-color: var(--oro-champagne);
    background: rgba(34, 32, 43, 0.9);
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
    content: "";
    display: block;
    width: 20px;
    height: 2px;
    background: var(--oro-champagne);
    border-radius: 2px;
    position: relative;
    transition: all 0.3s ease;
}

.nav-toggle-bar::before {
    position: absolute;
    top: -6px;
    left: 0;
}

.nav-toggle-bar::after {
    position: absolute;
    top: 6px;
    left: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar {
    background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after {
    transform: rotate(-45deg);
    top: 0;
}

/* ==========================================================================
   HERO BANNER CINEMATOGRÁFICO
   ========================================================================== */
.hero-banner {
    position: relative;
    width: 100%;
    min-height: 86vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://storage.googleapis.com/inesaptogasparral/alan_de_santiago/imagen%20portada%20con%20logo%20.jpg') center 28% / cover no-repeat;
    color: var(--texto-blanco);
    text-align: center;
    padding: 100px 24px 80px;
    overflow: hidden;
}

/* Viñeta de lente y gradiente de cine */
.hero-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at center, rgba(12, 11, 14, 0.4) 0%, rgba(12, 11, 14, 0.88) 85%),
        linear-gradient(180deg, rgba(12, 11, 14, 0.3) 0%, rgba(12, 11, 14, 0.95) 100%);
    pointer-events: none;
}

.hero-banner::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, var(--bg-main), transparent);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInHero 1.1s ease-out;
}

@keyframes fadeInHero {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-tag-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 50px;
    background: rgba(26, 25, 33, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    color: var(--oro-champagne);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3.5px;
    text-transform: uppercase;
    margin-bottom: 22px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.hero-tag-badge i {
    font-size: 0.8rem;
    color: var(--oro-calido);
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.8rem, 6.5vw, 5rem);
    line-height: 1.08;
    margin-bottom: 18px;
    font-weight: 700;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
}

.hero-title span {
    display: block;
    font-family: 'Pinyon Script', cursive;
    font-size: clamp(2.6rem, 5.5vw, 4.4rem);
    font-weight: 400;
    color: var(--oro-champagne);
    text-shadow: 0 0 25px rgba(212, 175, 55, 0.5);
    margin-top: 4px;
}

.hero-sub {
    max-width: 720px;
    margin: 0 auto 36px;
    font-size: 1.12rem;
    color: rgba(245, 242, 235, 0.88);
    font-weight: 300;
    line-height: 1.7;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

.hero-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
    margin-bottom: 50px;
}

.btn-primary,
.btn-outline,
.btn-card {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transicion);
}

.btn-primary {
    background: linear-gradient(135deg, var(--oro-calido) 0%, var(--oro-oscuro) 100%);
    color: var(--texto-oscuro);
    padding: 16px 36px;
    box-shadow: var(--sombra-oro);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(212, 175, 55, 0.55);
    background: linear-gradient(135deg, #f7d56e 0%, var(--oro-champagne) 100%);
}

.btn-outline {
    background: rgba(20, 19, 24, 0.6);
    backdrop-filter: blur(10px);
    color: var(--texto-marfil);
    padding: 16px 32px;
    border: 1px solid rgba(212, 175, 55, 0.4);
}

.btn-outline:hover {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--oro-champagne);
    color: var(--oro-claro);
    transform: translateY(-3px);
}

/* Barra de Estadísticas de Confianza */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 780px;
    margin: 0 auto;
    padding: 18px 24px;
    background: rgba(20, 19, 24, 0.7);
    backdrop-filter: blur(14px);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    box-shadow: var(--sombra-card);
}

.stat-item {
    text-align: center;
}

.stat-num {
    display: block;
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--oro-champagne);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--texto-atenuado);
    text-transform: uppercase;
    letter-spacing: 1.2px;
}

/* ==========================================================================
   SECCIONES COMUNES
   ========================================================================== */
.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 96px 24px;
    position: relative;
}

.sec-header {
    margin-bottom: 54px;
    text-align: center;
}

.sec-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 3.5px;
    text-transform: uppercase;
    color: var(--oro-champagne);
}

.sec-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
    color: var(--texto-blanco);
    line-height: 1.18;
    margin-bottom: 14px;
    font-weight: 700;
}

.sec-desc {
    max-width: 680px;
    margin: 0 auto;
    color: var(--texto-atenuado);
    font-size: 1.05rem;
    font-weight: 300;
    line-height: 1.7;
}

/* ==========================================================================
   MUESTRAS DIGITALES (INVITACIONES & ENTREGAS EN LA NUBE)
   ========================================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card-project {
    background: var(--bg-card);
    border-radius: var(--radio-card);
    overflow: hidden;
    box-shadow: var(--sombra-card);
    border: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    transition: var(--transicion);
    position: relative;
}

.card-project:hover {
    transform: translateY(-8px);
    box-shadow: var(--sombra-hover);
    border-color: var(--border-gold);
}

.card-img-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #111;
}

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

.card-project:hover .card-img-wrap img {
    transform: scale(1.06);
}

.card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(12, 11, 14, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-subtle);
    color: var(--oro-champagne);
    border-radius: 30px;
    padding: 6px 14px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 1.6px;
    text-transform: uppercase;
}

.card-body {
    padding: 26px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 20px;
    flex: 1;
}

.card-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--texto-blanco);
    margin-bottom: 10px;
    line-height: 1.25;
}

.card-text {
    color: var(--texto-atenuado);
    font-size: 0.92rem;
    line-height: 1.65;
    font-weight: 300;
    margin-bottom: 14px;
}

/* Badges de características de la invitación */
.feature-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(212, 175, 55, 0.08);
    border: 1px solid rgba(212, 175, 55, 0.2);
    color: var(--oro-claro);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 500;
}

.btn-card {
    width: 100%;
    background: rgba(212, 175, 55, 0.12);
    color: var(--oro-calido);
    border: 1px solid var(--border-gold);
    padding: 13px 20px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.btn-card:hover {
    background: var(--oro-champagne);
    color: var(--texto-oscuro);
    box-shadow: var(--sombra-oro);
    transform: translateY(-2px);
}

/* ==========================================================================
   PORTAFOLIO FOTOGRÁFICO INTERACTIVO CON FILTROS & LIGHTBOX
   ========================================================================== */
.portfolio-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.tab-btn {
    background: rgba(26, 25, 33, 0.8);
    border: 1px solid var(--border-subtle);
    color: var(--texto-atenuado);
    padding: 10px 22px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transicion);
}

.tab-btn:hover {
    color: var(--oro-champagne);
    border-color: var(--border-gold);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--oro-calido) 0%, var(--oro-oscuro) 100%);
    color: var(--texto-oscuro);
    border-color: transparent;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(212, 175, 55, 0.35);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 4 / 5;
    background: var(--bg-card);
    box-shadow: var(--sombra-card);
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: var(--transicion);
}

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

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(12, 11, 14, 0.9) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 22px;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.portfolio-overlay i {
    align-self: center;
    margin-bottom: auto;
    margin-top: auto;
    font-size: 1.8rem;
    color: var(--oro-champagne);
    background: rgba(12, 11, 14, 0.7);
    padding: 16px;
    border-radius: 50%;
    border: 1px solid var(--border-gold);
    transform: scale(0.8);
    transition: transform 0.35s ease;
}

.portfolio-overlay span {
    font-size: 0.85rem;
    color: var(--texto-marfil);
    font-weight: 600;
    letter-spacing: 1px;
}

.portfolio-item:hover {
    transform: translateY(-6px);
    border-color: var(--border-gold);
    box-shadow: var(--sombra-hover);
}

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

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-overlay i {
    transform: scale(1);
}

.portfolio-item.is-hidden {
    display: none;
}

/* ==========================================================================
   MODAL LIGHTBOX FULLSCREEN
   ========================================================================== */
.lightbox-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(8, 7, 10, 0.95);
    backdrop-filter: blur(20px);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox-modal.is-open {
    display: flex;
    opacity: 1;
}

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

.lightbox-img {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    border: 1px solid var(--border-subtle);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    background: rgba(26, 25, 33, 0.8);
    border: 1px solid var(--border-subtle);
    color: var(--texto-marfil);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transicion);
    z-index: 10001;
}

.lightbox-close:hover {
    background: var(--oro-champagne);
    color: var(--texto-oscuro);
    transform: rotate(90deg);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(26, 25, 33, 0.8);
    border: 1px solid var(--border-subtle);
    color: var(--texto-marfil);
    width: 52px;
    height: 52px;
    border-radius: 50%;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transicion);
    z-index: 10001;
}

.lightbox-nav:hover {
    background: var(--oro-champagne);
    color: var(--texto-oscuro);
}

.lightbox-prev {
    left: 24px;
}

.lightbox-next {
    right: 24px;
}

.lightbox-counter {
    margin-top: 14px;
    color: var(--texto-atenuado);
    font-size: 0.88rem;
    letter-spacing: 1.5px;
}

/* ==========================================================================
   SERVICIOS PROFESIONALES DE ALTA GAMA
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 26px;
}

.service-card {
    background: var(--bg-card);
    padding: 38px 26px;
    border-radius: var(--radio-card);
    text-align: center;
    border: 1px solid var(--border-subtle);
    box-shadow: var(--sombra-card);
    transition: var(--transicion);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-gold);
    box-shadow: var(--sombra-hover);
    background: var(--bg-card-hover);
}

.service-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid var(--border-gold);
    color: var(--oro-champagne);
    font-size: 1.7rem;
    transition: var(--transicion);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    background: var(--oro-champagne);
    color: var(--texto-oscuro);
    box-shadow: 0 0 25px rgba(212, 175, 55, 0.4);
}

.service-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.45rem;
    margin-bottom: 12px;
    color: var(--texto-blanco);
}

.service-text {
    font-size: 0.92rem;
    color: var(--texto-atenuado);
    font-weight: 300;
    line-height: 1.65;
}

/* ==========================================================================
   COTIZADOR ASISTENTE INTERACTIVO DE PRESUPUESTO
   ========================================================================== */
.quote-wrapper {
    background: linear-gradient(135deg, rgba(26, 25, 33, 0.9) 0%, rgba(20, 19, 24, 0.95) 100%);
    border-radius: 24px;
    border: 1px solid var(--border-gold);
    padding: 44px 36px;
    box-shadow: var(--sombra-card);
    position: relative;
    overflow: hidden;
}

.quote-wrapper::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 70% 20%, rgba(212, 175, 55, 0.06) 0%, transparent 60%);
    pointer-events: none;
}

.quote-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    position: relative;
    z-index: 1;
}

.quote-step-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.3rem;
    color: var(--oro-champagne);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.event-type-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 26px;
}

.event-type-btn {
    background: rgba(12, 11, 14, 0.6);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 14px 10px;
    color: var(--texto-marfil);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transicion);
}

.event-type-btn i {
    font-size: 1.2rem;
    color: var(--oro-champagne);
}

.event-type-btn.active {
    background: rgba(212, 175, 55, 0.16);
    border-color: var(--oro-champagne);
    color: var(--oro-claro);
    box-shadow: 0 4px 18px rgba(212, 175, 55, 0.25);
}

.services-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-check-label {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(12, 11, 14, 0.5);
    border: 1px solid var(--border-subtle);
    padding: 14px 18px;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transicion);
}

.service-check-label:hover {
    border-color: var(--border-gold);
    background: rgba(212, 175, 55, 0.05);
}

.service-check-label input[type="checkbox"] {
    accent-color: var(--oro-champagne);
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.check-info {
    flex: 1;
}

.check-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--texto-blanco);
    display: block;
}

.check-sub {
    font-size: 0.78rem;
    color: var(--texto-atenuado);
    display: block;
}

/* Panel de Resumen del Presupuesto */
.quote-summary-panel {
    background: rgba(12, 11, 14, 0.8);
    border: 1px solid var(--border-subtle);
    border-radius: 18px;
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.summary-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 16px;
    margin-bottom: 18px;
}

.summary-header h4 {
    font-family: 'Playfair Display', serif;
    font-size: 1.35rem;
    color: var(--oro-champagne);
}

.summary-items {
    list-style: none;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.summary-items li {
    font-size: 0.9rem;
    color: var(--texto-marfil);
    display: flex;
    align-items: center;
    gap: 8px;
}

.summary-items li i {
    color: var(--oro-champagne);
    font-size: 0.8rem;
}

.quote-btn-wa {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, #25d366 0%, #1ea952 100%);
    color: #fff;
    padding: 16px 24px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.92rem;
    letter-spacing: 1px;
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.35);
    transition: var(--transicion);
    text-align: center;
}

.quote-btn-wa:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.5);
    background: linear-gradient(135deg, #2ce872 0%, #1ea952 100%);
}

/* ==========================================================================
   GARANTÍAS & TESTIMONIOS
   ========================================================================== */
.guarantees-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.guarantee-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    padding: 28px 22px;
    display: flex;
    align-items: flex-start;
    gap: 18px;
    transition: var(--transicion);
}

.guarantee-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-4px);
}

.guarantee-icon {
    font-size: 1.6rem;
    color: var(--oro-champagne);
    background: rgba(212, 175, 55, 0.1);
    padding: 14px;
    border-radius: 12px;
    flex-shrink: 0;
}

.guarantee-content h4 {
    font-family: 'Playfair Display', serif;
    font-size: 1.15rem;
    color: var(--texto-blanco);
    margin-bottom: 6px;
}

.guarantee-content p {
    font-size: 0.88rem;
    color: var(--texto-atenuado);
    line-height: 1.55;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer {
    background: #08070a;
    color: var(--texto-marfil);
    padding: 72px 24px 32px;
    text-align: center;
    border-top: 1px solid var(--border-subtle);
}

.footer-logo {
    max-height: 64px;
    margin: 0 auto 18px;
    filter: drop-shadow(0 2px 10px rgba(212, 175, 55, 0.4));
}

.footer-slogan {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: var(--oro-champagne);
    margin-bottom: 14px;
}

.footer-contact {
    margin: 20px 0 0;
    color: var(--texto-atenuado);
    font-size: 0.98rem;
}

.footer-contact a {
    color: var(--oro-champagne);
    font-weight: 600;
}

.footer-bottom {
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   RESPONSIVE DESIGN (TABLETS & SMARTPHONES)
   ========================================================================== */
@media (max-width: 980px) {
    .nav-links {
        gap: 18px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        padding: 14px 18px;
    }
    
    .quote-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

@media (max-width: 768px) {
    header {
        padding: 12px 18px;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 12px);
        right: 16px;
        left: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        background: rgba(20, 19, 24, 0.98);
        backdrop-filter: blur(20px);
        border: 1px solid var(--border-gold);
        border-radius: 18px;
        padding: 20px;
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        width: 100%;
        text-align: center;
        padding: 12px 14px;
        border-radius: 10px;
        font-size: 0.85rem;
    }

    .btn-wa-header {
        width: 100%;
        padding: 14px;
        text-align: center;
        justify-content: center;
    }

    .hero-banner {
        min-height: 75vh;
        padding: 60px 18px 50px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions a {
        width: 100%;
        max-width: 320px;
    }

    .section-container {
        padding: 68px 18px;
    }

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

    .portfolio-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .event-type-selector {
        grid-template-columns: 1fr;
    }

    .quote-wrapper {
        padding: 26px 18px;
    }
}

/* BOTÓN FLOTANTE WHATSAPP MÓVIL */
.float-wa {
    position: fixed;
    bottom: 24px;
    right: 20px;
    width: 56px;
    height: 56px;
    background: #25d366;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4), 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 999;
    text-decoration: none;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
    -webkit-tap-highlight-color: transparent;
}

.float-wa:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
    color: #ffffff;
}

@media (max-width: 768px) {
    .filter-bar {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 4px 2px 8px;
        justify-content: flex-start;
    }

    .filter-bar::-webkit-scrollbar { display: none; }

    .filter-btn {
        flex-shrink: 0;
        white-space: nowrap;
        padding: 8px 16px;
        font-size: 0.78rem;
    }
}

@media (max-width: 480px) {
    .brand-logo img {
        height: 38px;
    }

    .hero-title {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 2.5rem;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .sec-title {
        font-size: 1.9rem;
    }

    .float-wa {
        bottom: 18px;
        right: 16px;
        width: 52px;
        height: 52px;
        font-size: 1.6rem;
    }

    .lightbox-modal {
        padding: 20px 10px;
        height: 100dvh;
    }

    .lightbox-img {
        max-width: 96vw;
        max-height: 75dvh;
    }
}

/* OPTIMIZACIÓN DE RENDIMIENTO: Rendering asíncrono para secciones offscreen */
#servicios,
#cotizador,
#garantias,
footer {
    content-visibility: auto;
    contain-intrinsic-size: auto 600px;
}