/* ==========================================================================
           1. SISTEMA DE DISEÑO (GALA ACADÉMICA: NAVY & GOLD)
           ========================================================================== */
        :root {
            /* Paleta de Colores */
            --color-fondo-base: #FAFAFA;
            --color-navy: #0A192F;      /* Azul marino profundo */
            --color-navy-claro: #112240;
            --color-oro: #D4AF37;       /* Oro clásico */
            --color-oro-hover: #B5952F;
            --color-texto-claro: #A0AEC0;
            --color-blanco: #FFFFFF;
            
            /* Tipografías */
            --fuente-titulos: 'Cinzel', serif;
            --fuente-textos: 'Montserrat', sans-serif;

            /* Sombras Optimadas */
            --sombra-suave: 0 10px 30px rgba(10, 25, 47, 0.08);
            --borde-radio: 16px;
        }

        /* ==========================================================================
           2. RESET Y UTILIDADES GLOBALES
           ========================================================================== */
        * { 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-navy); 
            line-height: 1.6; 
            overflow-x: hidden;
            /* Suavizado de fuentes estricto */
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1, h2, h3 { font-family: var(--fuente-titulos); font-weight: 600; }
        .contenedor { max-width: 800px; margin: 0 auto; padding: 0 6%; }
        .seccion-padding { padding: 80px 0; }
        a { text-decoration: none; color: inherit; }

        /* Clases de Animación Scroll Optimizadas (Cero text-jitter) */
        .fade-up { 
            opacity: 0; 
            transform: translate3d(0, 40px, 0.1px) rotate(0.01deg); 
            transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); 
        }
        .fade-up.visible { 
            opacity: 1; 
            transform: translate3d(0, 0, 0.1px) rotate(0.01deg); 
        }
        .delay-1 { transition-delay: 200ms; } 
        .delay-2 { transition-delay: 400ms; }

        /* ==========================================================================
           3. BOTONES
           ========================================================================== */
        .btn-oro {
            display: inline-flex; align-items: center; justify-content: center; gap: 10px;
            background: var(--color-oro); color: var(--color-blanco); 
            padding: 15px 35px; border-radius: 50px; border: none; cursor: pointer;
            font-family: var(--fuente-textos); font-weight: 600; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 1px;
            box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3); transition: all 0.3s ease;
        }
        .btn-oro:hover { 
            background: var(--color-oro-hover);
            transform: translate3d(0, -3px, 0.1px) rotate(0.01deg); 
            box-shadow: 0 15px 25px rgba(212, 175, 55, 0.4); 
        }

        .btn-outline {
            display: inline-flex; align-items: center; justify-content: center; gap: 8px;
            background: transparent; color: var(--color-navy); 
            border: 1px solid var(--color-navy); padding: 12px 25px; border-radius: 50px;
            font-weight: 500; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px;
            transition: all 0.3s ease; cursor: pointer;
        }
        .btn-outline:hover { 
            background: var(--color-navy); color: var(--color-blanco); 
            transform: translate3d(0, -2px, 0.1px) rotate(0.01deg);
        }

        /* ==========================================================================
           4. PRELOADER LIMPIO
           ========================================================================== */
        #preloader { 
            position: fixed; top: 0; left: 0; width: 100%; height: 100%; 
            background: var(--color-navy); z-index: 99999; 
            display: flex; flex-direction: column; justify-content: center; align-items: center; 
            transition: opacity 0.6s ease; 
        }
        #preloader.oculto { opacity: 0; pointer-events: none; }
        .loader-icon { 
            font-size: 3.5rem; color: var(--color-oro); 
            margin-bottom: 15px; animation: pulse 1.5s infinite; 
        }
        .loader-text {
            font-family: var(--fuente-titulos); font-size: 1.5rem; color: var(--color-blanco); letter-spacing: 3px;
        }
        @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

        /* ==========================================================================
           5. PORTADA HERO
           ========================================================================== */
        .hero { 
            position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; 
            padding: 20px; overflow: hidden; background: var(--color-navy); color: var(--color-blanco);
        }
        
        .hero-bg { position: absolute; inset: 0; z-index: 0; }
        .hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }
        .hero-bg::after { 
            content: ''; position: absolute; inset: 0; 
            background: linear-gradient(to bottom, rgba(10,25,47,0.3) 0%, rgba(10,25,47,1) 100%); 
        }

        .hero-content { position: relative; z-index: 2; width: 100%; max-width: 600px; text-align: center; }
        
        .hero-grado { 
            font-family: var(--fuente-textos); font-size: 0.9rem; letter-spacing: 5px; 
            text-transform: uppercase; color: var(--color-oro); margin-bottom: 20px; font-weight: 500;
        }
        .hero-nombre { 
            font-family: var(--fuente-titulos); font-size: 4.5rem; line-height: 1.1; 
            color: var(--color-blanco); margin-bottom: 20px; text-shadow: 2px 2px 10px rgba(0,0,0,0.5); 
        }
        .hero-generacion { 
            font-family: var(--fuente-textos); font-size: 1.1rem; color: var(--color-texto-claro); 
            letter-spacing: 3px; font-weight: 300; 
        }
        .hero-linea {
            width: 60px; height: 2px; background: var(--color-oro); margin: 30px auto;
        }

        /* ==========================================================================
           6. CUENTA REGRESIVA
           ========================================================================== */
        .contador-grid { 
            display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; margin-top: 20px; 
        }
        .contador-box { 
            background: var(--color-blanco); width: 85px; height: 90px; 
            display: flex; flex-direction: column; justify-content: center; align-items: center; 
            border-radius: 12px; border: 1px solid rgba(212, 175, 55, 0.3); 
            box-shadow: var(--sombra-suave); 
        }
        .contador-numero { 
            font-family: var(--fuente-titulos); font-size: 2.2rem; color: var(--color-navy); 
            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); font-weight: 600;
        }

        /* ==========================================================================
           7. UBICACIONES Y EVENTOS
           ========================================================================== */
        .titulo-seccion { 
            font-size: 2.2rem; text-align: center; color: var(--color-navy); margin-bottom: 40px; 
        }
        
        .ubicacion-card {
            background: var(--color-blanco); padding: 40px 30px; border-radius: var(--borde-radio);
            box-shadow: var(--sombra-suave); text-align: center; margin-bottom: 30px;
            border-top: 4px solid var(--color-oro);
        }
        .ubicacion-icono {
            font-size: 2.5rem; color: var(--color-oro); margin-bottom: 15px;
        }
        .ubicacion-titulo {
            font-size: 1.5rem; margin-bottom: 10px; color: var(--color-navy);
        }
        .ubicacion-hora {
            display: inline-block; background: var(--color-navy-claro); color: var(--color-blanco);
            padding: 5px 15px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; margin-bottom: 20px;
        }
        .ubicacion-direccion {
            font-size: 0.95rem; color: var(--color-navy); margin-bottom: 25px; line-height: 1.8;
        }
        .botones-mapa {
            display: flex; justify-content: center; gap: 15px; flex-wrap: wrap;
        }

        /* ==========================================================================
           8. RSVP (CONFIRMACIÓN SIMPLE A WHATSAPP)
           ========================================================================== */
        .seccion-rsvp { 
            position: relative;
            background: var(--color-navy-claro); 
            color: var(--color-blanco); 
            border-radius: 24px; 
            margin: 0 20px; 
            padding: 80px 20px; 
            text-align: center; 
            overflow: hidden;
            border: 1px solid rgba(212, 175, 55, 0.15);
            box-shadow: var(--sombra-suave);
        }
        
        /* Efecto Liquid Gold en el fondo optimizado para GPU */
        .seccion-rsvp::before, .seccion-rsvp::after {
            content: '';
            position: absolute;
            width: 450px;
            height: 450px;
            background: linear-gradient(135deg, var(--color-oro) 0%, transparent 60%);
            /* Forma líquida estática */
            border-radius: 43% 57% 65% 35% / 45% 55% 45% 55%;
            animation: liquidFlow 15s linear infinite;
            opacity: 0.15;
            z-index: 0;
            pointer-events: none;
            will-change: transform;
        }
        .seccion-rsvp::before {
            top: -200px;
            left: -200px;
        }
        .seccion-rsvp::after {
            bottom: -200px;
            right: -200px;
            background: linear-gradient(315deg, var(--color-oro) 0%, transparent 60%);
            animation-direction: reverse;
            animation-duration: 20s;
        }

        /* Animando solo transform para mantener 60fps estrictos */
        @keyframes liquidFlow {
            0% { transform: rotate(0deg) scale(1) translate3d(0, 0, 0); }
            33% { transform: rotate(120deg) scale(1.05) translate3d(15px, -15px, 0); }
            66% { transform: rotate(240deg) scale(0.95) translate3d(-15px, 15px, 0); }
            100% { transform: rotate(360deg) scale(1) translate3d(0, 0, 0); }
        }

        /* Tarjeta de Cristal central */
        .rsvp-content {
            position: relative;
            z-index: 1; 
            background: rgba(10, 25, 47, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 50px 30px;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            max-width: 600px;
            margin: 0 auto;
            box-shadow: 0 15px 35px rgba(0,0,0,0.2);
        }

        .seccion-rsvp h2 { color: var(--color-oro); margin-bottom: 15px; font-size: 2.2rem; }
        .seccion-rsvp p { color: var(--color-texto-claro); margin-bottom: 30px; font-size: 0.95rem; line-height: 1.8; }
        .rsvp-icono { font-size: 3.5rem; color: var(--color-oro); margin-bottom: 20px; display: inline-block;}

        /* ==========================================================================
           9. FOOTER COMERCIAL
           ========================================================================== */
        .footer-comercial { padding: 60px 20px 30px; text-align: center; color: var(--color-texto-claro); }
        .footer-comercial h3 { font-family: var(--fuente-textos); font-size: 1rem; font-weight: 500; margin-bottom: 20px; color: var(--color-navy); }
        
        .social-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 20px; }
        .social-link { font-size: 1.5rem; color: var(--color-oro); transition: transform 0.3s; }
        .social-link:hover { 
            transform: translate3d(0, -4px, 0.1px) rotate(0.01deg); 
            color: var(--color-oro-hover); 
        }
        
        .creditos { font-size: 0.8rem; border-top: 1px solid rgba(212, 175, 55, 0.2); padding-top: 20px; max-width: 300px; margin: 0 auto; }
        .creditos a { color: var(--color-oro); font-weight: 600; }

        /* ==========================================================================
           10. RESPONSIVO
           ========================================================================== */
        @media (max-width: 600px) {
            .hero-nombre { font-size: 3.2rem; }
            .hero-grado { font-size: 0.8rem; letter-spacing: 3px; }
            .contador-grid { gap: 10px; }
            .contador-box { width: 75px; height: 80px; }
            .contador-numero { font-size: 1.8rem; }
            .contador-label { font-size: 0.55rem; }
            .botones-mapa { flex-direction: column; }
            .seccion-rsvp { margin: 0; border-radius: 0; }
        }