/* ==========================================================
           1. SISTEMA DE DISEÑO (PLATA / BLANCO PURO)
           ========================================================== */
        :root {
            /* Fondos Claros / Puros */
            --color-fondo-base: #FAFAFA;
            --color-fondo-secundario: #F3F4F6;
            
            /* Textos con alto contraste */
            --color-texto-oscuro: #1A202C; 
            --color-texto-claro: #717D8A;
            
            /* Tonos Plata / Gris Perlado */
            --color-plata: #8F9BA8;
            --color-plata-claro: #CBD5E1;
            --color-plata-oscuro: #64748B;
            --gradiente-plata: linear-gradient(135deg, #CBD5E1 0%, #8F9BA8 100%);

            /* Tipografías Premium */
            --fuente-titulos: 'Cinzel', serif;
            --fuente-nombres: 'Great Vibes', cursive;
            --fuente-textos: 'Montserrat', sans-serif;

            /* Glassmorphism Sutil */
            --bg-cristal: rgba(255, 255, 255, 0.75);
            --borde-cristal: 1px solid rgba(143, 155, 168, 0.2);
            --sombra-cristal: 0 10px 30px rgba(143, 155, 168, 0.1);
            --blur-cristal: blur(10px);
        }

        /* ==========================================================
           2. RESET Y UTILIDADES DE ALTO RENDIMIENTO
           ========================================================== */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--fuente-textos);
            background-color: var(--color-fondo-base);
            color: var(--color-texto-oscuro);
            line-height: 1.6;
            overflow-x: hidden;
            /* Antialiasing forzado */
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        h1, h2, h3 { font-family: var(--fuente-titulos); font-weight: 500; }
        .contenedor { max-width: 800px; margin: 0 auto; padding: 0 6%; position: relative; z-index: 5; }
        .seccion-padding { padding: 80px 0; position: relative; z-index: 5; }
        a { text-decoration: none; color: inherit; }

        /* CLASE MAESTRA: EFECTO CRISTAL (Alto Rendimiento) */
        .glass-card {
            background: var(--bg-cristal);
            backdrop-filter: var(--blur-cristal);
            -webkit-backdrop-filter: var(--blur-cristal);
            border: var(--borde-cristal);
            border-radius: 20px;
            box-shadow: var(--sombra-cristal);
            padding: 40px 30px;
            position: relative;
            overflow: hidden;
            transform: translate3d(0,0,0); /* Fuerza hardware acceleration */
        }

        /* Animaciones Scroll Optimizadas */
        .fade-up { 
            opacity: 0; 
            transform: translate3d(0, 40px, 0); 
            transition: opacity 1s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1s cubic-bezier(0.2, 0.8, 0.2, 1); 
            will-change: opacity, transform;
        }
        .fade-up.visible { opacity: 1; transform: translate3d(0, 0, 0); }
        .delay-1 { transition-delay: 200ms; } 
        .delay-2 { transition-delay: 400ms; }

        /* ==========================================================
           2.5 EFECTOS VISUALES VIP SEGUROS (TEXTURA CSS, ORBES Y SHIMMER)
           ========================================================== */
        
        /* 1. Textura de Papel de Lino (Patrón CSS 100% Seguro) */
        .textura-papel {
            position: fixed; inset: 0; z-index: 1; pointer-events: none;
            background-image: 
                radial-gradient(rgba(143, 155, 168, 0.15) 1px, transparent 1px),
                radial-gradient(rgba(143, 155, 168, 0.1) 1px, transparent 1px);
            background-size: 20px 20px;
            background-position: 0 0, 10px 10px;
        }

        /* 2. Ambientación: Polvo de Estrellas (Hardware Accelerated) */
        .polvo-estrellas { position: fixed; inset: 0; z-index: 2; pointer-events: none; overflow: hidden; }
        .orbe {
            position: absolute; border-radius: 50%;
            background: radial-gradient(circle, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0) 70%);
            will-change: transform, opacity;
        }
        .orbe-1 { width: 180px; height: 180px; top: 15%; left: -5%; animation: flotarOrbe 8s infinite alternate ease-in-out, latidoOrbe 4s infinite alternate; }
        .orbe-2 { width: 250px; height: 250px; top: 45%; right: -10%; animation: flotarOrbe 12s infinite alternate-reverse ease-in-out, latidoOrbe 6s infinite alternate; }
        .orbe-3 { width: 120px; height: 120px; bottom: 10%; left: 20%; animation: flotarOrbe 10s infinite alternate ease-in-out, latidoOrbe 5s infinite alternate; }
        
        @keyframes flotarOrbe {
            0% { transform: translate3d(0, 0, 0); }
            100% { transform: translate3d(30px, -50px, 0); }
        }
        @keyframes latidoOrbe {
            0% { opacity: 0.2; }
            100% { opacity: 0.6; }
        }

        /* 3. Shimmer Effect (Reflejo de Cristal) para Glass Cards */
        .glass-card::before {
            content: ''; position: absolute; top: 0; left: -100%; width: 50%; height: 100%;
            background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.6) 50%, rgba(255,255,255,0) 100%);
            transform: skewX(-20deg);
            animation: shimmerSweep 6s infinite;
            pointer-events: none; z-index: 10;
        }
        @keyframes shimmerSweep {
            0%, 50% { left: -100%; }
            100% { left: 200%; }
        }

        /* ==========================================================
           2.6 DECORACIONES (PALOMAS, DESTELLOS, DIVISORES)
           ========================================================== */
        
        /* Divisor Ornamental Elegante */
        .divisor-ornamental {
            display: flex; align-items: center; justify-content: center; gap: 15px; margin: 0 auto 35px; position: relative; z-index: 15;
        }
        .divisor-ornamental .linea { height: 1px; width: 45px; background: var(--color-plata-claro); }
        .divisor-ornamental i { font-size: 1rem; color: var(--color-plata); }

        /* Destellos Angelicales */
        .destello {
            position: absolute; color: var(--color-plata-claro); font-size: 1.5rem;
            animation: titilar 3s infinite alternate; pointer-events: none; z-index: 12;
            will-change: opacity;
        }
        .destello-1 { top: -20px; left: -20px; animation-delay: 0s; font-size: 2rem; }
        .destello-2 { bottom: -10px; right: -15px; animation-delay: 1.5s; font-size: 1.2rem; }
        .destello-3 { top: 40px; right: -25px; animation-delay: 0.8s; font-size: 1.6rem; }
        
        @keyframes titilar {
            0%, 100% { opacity: 0.2; }
            50% { opacity: 1; }
        }

        /* Palomas Flotantes SVG */
        .paloma-decorativa {
            position: absolute; color: white; opacity: 0.5; pointer-events: none; z-index: 4;
            will-change: transform;
            filter: drop-shadow(0 10px 15px rgba(0,0,0,0.05));
        }
        .paloma-hero {
            width: 120px; top: 15%; right: 10%;
            animation: vueloLento 12s infinite alternate ease-in-out;
        }
        .paloma-seccion {
            width: 90px; top: 40%; left: 5%; color: var(--color-plata-claro); opacity: 0.3;
            animation: vueloLentoInverso 15s infinite alternate ease-in-out;
        }

        @keyframes vueloLento {
            0% { transform: translate3d(0, 0, 0) rotate(-5deg); }
            100% { transform: translate3d(-30px, -40px, 0) rotate(5deg); }
        }
        @keyframes vueloLentoInverso {
            0% { transform: translate3d(0, 0, 0) rotate(5deg) scaleX(-1); }
            100% { transform: translate3d(25px, -30px, 0) rotate(-5deg) scaleX(-1); }
        }

        /* ==========================================================
           3. BOTONES
           ========================================================== */
        .btn-principal {
            display: inline-flex; align-items: center; justify-content: center; gap: 10px;
            background: var(--gradiente-plata); color: white; padding: 15px 35px;
            font-family: var(--fuente-textos); font-weight: 500; font-size: 0.95rem; 
            text-transform: uppercase; letter-spacing: 2px; border-radius: 50px; 
            border: none; cursor: pointer;
            box-shadow: 0 10px 20px rgba(143, 155, 168, 0.3); 
            transition: all 0.3s ease;
            will-change: transform;
            position: relative; z-index: 10;
        }
        .btn-principal:hover { 
            transform: translate3d(0, -3px, 0); 
            box-shadow: 0 15px 25px rgba(143, 155, 168, 0.4); 
        }

        .btn-whatsapp {
            display: inline-flex; align-items: center; justify-content: center; gap: 10px;
            background: #25D366; color: white; padding: 15px 35px;
            font-family: var(--fuente-textos); font-weight: 600; font-size: 0.95rem; 
            text-transform: uppercase; letter-spacing: 1px; border-radius: 50px; 
            border: none; cursor: pointer;
            box-shadow: 0 10px 20px rgba(37, 211, 102, 0.3); 
            transition: all 0.3s ease;
            will-change: transform;
            position: relative; z-index: 10;
        }
        .btn-whatsapp:hover { 
            background: #128C7E;
            transform: translate3d(0, -3px, 0); 
            box-shadow: 0 15px 25px rgba(37, 211, 102, 0.4); 
        }

        /* ==========================================================
           4. PRELOADER
           ========================================================== */
        #preloader { 
            position: fixed; top: 0; left: 0; width: 100%; height: 100%; 
            background: var(--color-fondo-base); z-index: 99999; 
            display: flex; flex-direction: column; justify-content: center; align-items: center; 
            transition: opacity 0.8s ease; 
        }
        #preloader.oculto { opacity: 0; pointer-events: none; }
        
        .loader-icono { 
            font-size: 3.5rem; color: var(--color-plata); 
            margin-bottom: 20px;
            animation: pulseLoader 2s infinite ease-in-out;
            will-change: opacity, transform;
        }
        @keyframes pulseLoader { 
            0%, 100% { transform: translate3d(0,0,0); opacity: 1; } 
            50% { transform: translate3d(0,-10px,0); opacity: 0.6; } 
        }

        /* ==========================================================
           5. PORTADA (HERO MINIMALISTA)
           ========================================================== */
        .hero { 
            position: relative; min-height: 100vh; display: flex; 
            align-items: center; justify-content: center; padding: 20px; 
            overflow: hidden; 
        }
        .hero-bg { position: absolute; inset: 0; z-index: 3; }
        .hero-bg img { 
            width: 100%; height: 100%; object-fit: cover; 
            filter: brightness(0.95) grayscale(20%); 
        }
        .hero-bg::after { 
            content: ''; position: absolute; inset: 0; 
            background: linear-gradient(to bottom, rgba(250,250,250,0.4) 0%, rgba(250,250,250,1) 100%); 
        }

        .hero-content { 
            position: relative; z-index: 10; width: 100%; max-width: 420px; text-align: center; 
        }
        
        /* --- REDISEÑO DE TARJETA HERO: ESTILO ARCO / BÓVEDA --- */
        .hero-glass { 
            padding: 70px 40px 50px; 
            border-radius: 200px 200px 15px 15px !important; 
            background: linear-gradient(to bottom, rgba(255,255,255,0.85), rgba(255,255,255,0.98)) !important; 
            border: none !important;
            box-shadow: 0 25px 50px rgba(143, 155, 168, 0.25) !important;
        }
        /* Borde interno decorativo (Plata) */
        .hero-glass::after {
            content: ''; position: absolute; inset: 10px;
            border: 1px solid var(--color-plata-claro);
            border-radius: 190px 190px 10px 10px;
            pointer-events: none; z-index: 12;
        }

        .hero-etiqueta { 
            font-family: var(--fuente-textos); font-size: 0.85rem; letter-spacing: 6px; 
            text-transform: uppercase; color: var(--color-texto-claro); margin-bottom: 10px; 
            position: relative; z-index: 15;
        }
        .hero-nombre { 
            font-family: var(--fuente-nombres); font-size: 5.5rem; line-height: 1.1; 
            color: var(--color-texto-oscuro); margin-bottom: 20px; 
            position: relative; z-index: 15;
        }
        .hero-fecha { 
            font-family: var(--fuente-titulos); font-size: 1.1rem; color: var(--color-texto-oscuro); 
            letter-spacing: 2px; text-transform: uppercase;
            position: relative; z-index: 15;
        }

        /* ==========================================================
           6. SECCIÓN PADRES, PADRINOS Y FOTO FESTEJADA
           ========================================================== */
        .seccion-padres { text-align: center; }
        .icono-espiritual { font-size: 2.5rem; color: var(--color-plata); margin-bottom: 25px; }
        
        /* Marco tipo Arco Elegante para la foto principal */
        .foto-festejada {
            width: 100%; max-width: 320px; margin: 0 auto 35px;
            /* Borde superior muy redondeado creando un arco, inferior ligeramente redondeado */
            border-radius: 200px 200px 15px 15px; 
            overflow: hidden; border: 4px solid white; box-shadow: var(--sombra-cristal);
            position: relative; background-color: var(--color-fondo-secundario);
            z-index: 10;
        }
        .foto-festejada img {
            width: 100%; height: 420px; object-fit: cover; display: block;
        }

        /* Texto Largo de Invitación */
        .texto-largo-invitacion { 
            font-size: 1.05rem; line-height: 1.9; color: var(--color-texto-oscuro); 
            margin: 0 auto 50px; max-width: 600px; font-weight: 300; 
        }
        .texto-largo-invitacion p { margin-bottom: 20px; }
        .texto-largo-invitacion p:last-child { margin-bottom: 0; }

        .etiqueta-honor { 
            font-size: 0.8rem; text-transform: uppercase; letter-spacing: 4px; 
            color: var(--color-texto-claro); margin-bottom: 10px; 
        }
        .nombres-honor { 
            font-family: var(--fuente-titulos); font-size: 1.5rem; color: var(--color-texto-oscuro); 
            font-weight: 600; margin-bottom: 35px; 
        }

        /* ==========================================================
           7. CUENTA REGRESIVA
           ========================================================== */
        .titulo-seccion { 
            font-size: 2.2rem; text-align: center; color: var(--color-texto-oscuro); margin-bottom: 10px; 
        }
        .contador-grid { 
            display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; margin-top: 30px; 
        }
        .contador-box { 
            background: rgba(255,255,255,0.8); width: 85px; height: 95px; 
            display: flex; flex-direction: column; justify-content: center; align-items: center; 
            border-radius: 15px; border: 1px solid var(--color-plata-claro); 
            box-shadow: 0 5px 15px rgba(143, 155, 168, 0.1); position: relative; z-index: 10;
        }
        .contador-numero { 
            font-family: var(--fuente-titulos); font-size: 2.2rem; color: var(--color-texto-oscuro); 
            line-height: 1; font-weight: 600; 
        }
        .contador-label { 
            font-size: 0.65rem; text-transform: uppercase; letter-spacing: 2px; 
            margin-top: 5px; color: var(--color-texto-claro); 
        }

        /* ==========================================================
           8. UBICACIONES
           ========================================================== */
        .ubicacion-card {
            background: white; border-radius: 20px; padding: 40px 30px;
            text-align: center; margin-bottom: 30px;
            border: 1px solid var(--color-plata-claro);
            box-shadow: var(--sombra-cristal);
            transition: transform 0.3s ease;
            will-change: transform; position: relative; z-index: 10;
        }
        .ubicacion-card:hover { transform: translate3d(0, -5px, 0); }
        
        .ubicacion-icono { 
            width: 60px; height: 60px; background: var(--color-fondo-secundario); 
            border-radius: 50%; display: flex; justify-content: center; align-items: center; 
            margin: 0 auto 20px; font-size: 1.8rem; color: var(--color-plata-oscuro); 
        }
        .ubicacion-titulo { 
            font-family: var(--fuente-titulos); font-size: 1.4rem; color: var(--color-texto-oscuro); 
            margin-bottom: 10px; font-weight: 600;
        }
        .ubicacion-hora { 
            font-size: 1.1rem; color: var(--color-plata-oscuro); font-weight: 500; margin-bottom: 15px; 
        }
        .ubicacion-direccion { 
            font-size: 0.9rem; color: var(--color-texto-claro); margin-bottom: 25px; line-height: 1.5; 
        }

        /* ==========================================================
           9. RSVP BÁSICO Y FOOTER
           ========================================================== */
        /* Rediseño de la tarjeta RSVP (Estilo Papelería Fina / Arco) */
        .seccion-rsvp { 
            background: linear-gradient(to bottom, rgba(255,255,255,0.95), rgba(243,244,246,0.95));
            color: var(--color-texto-oscuro); 
            border-radius: 200px 200px 20px 20px; 
            padding: 80px 30px 60px; 
            text-align: center; 
            position: relative; 
            z-index: 10;
            box-shadow: 0 25px 50px rgba(143, 155, 168, 0.15);
            border: 3px solid white;
            backdrop-filter: blur(10px);
            max-width: 500px; 
            margin: 0 auto;
        }
        
        /* Borde troquelado interno */
        .seccion-rsvp::before {
            content: ''; position: absolute; inset: 12px;
            border: 1px dashed var(--color-plata-oscuro);
            border-radius: 190px 190px 10px 10px;
            pointer-events: none; opacity: 0.4;
        }

        .icono-rsvp { font-size: 3rem; color: var(--color-plata); margin-bottom: 10px; position: relative; z-index: 2; }
        .seccion-rsvp h2 { color: var(--color-texto-oscuro); font-size: 2rem; position: relative; z-index: 2; line-height: 1.2; }
        .seccion-rsvp p { color: var(--color-texto-claro); margin: 20px auto 35px; font-size: 0.95rem; max-width: 350px; position: relative; z-index: 2; }

        footer { background-color: var(--color-texto-oscuro); color: #FFFFFF; padding: 60px 0 20px; position: relative; z-index: 10; margin-top: 60px; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 30px; }
        
        /* Tipografía oficial de la marca ArteEnLink */
        .logo { font-family: 'Playfair Display', serif; font-size: 1.8rem; font-weight: 700; letter-spacing: -0.5px; }
        .logo span { font-style: italic; }

        .copyright { text-align: center; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; color: rgba(255,255,255,0.5); font-size: 0.85rem; }

        /* ==========================================================
           10. RESPONSIVO
           ========================================================== */
        @media (max-width: 600px) {
            .hero-nombre { font-size: 4.5rem; }
            .hero-glass { padding: 40px 20px; }
            .foto-festejada { height: auto; border-radius: 150px 150px 15px 15px; }
            .foto-festejada img { height: 350px; }
            .contador-grid { gap: 8px; flex-wrap: nowrap; }
            .contador-box { flex: 1; max-width: 75px; height: 80px; }
            .contador-numero { font-size: 1.6rem; }
            .contador-label { font-size: 0.55rem; letter-spacing: 1px; }
            .seccion-rsvp { border-radius: 150px 150px 20px 20px; padding: 60px 20px 40px; }
            .seccion-rsvp::before { border-radius: 140px 140px 10px 10px; }
        }