:root {
    /* --- PALETA DE COLORES (MODO CLARO) --- */
    --bg-page: #f5f7fa;           /* Fondo suave de la página */
    --accent-color: #2d8b9e;      /* El Cian característico de SUMAK */
    --accent-glow: rgba(45, 139, 158, 0.12);      /* Sombra cian sutil y seria */
    
    /* --- VARIABLES DEL VIDRIO (GLASS) --- */
    --glass-bg: rgba(255, 255, 255, 0.45);  
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: rgba(31, 38, 135, 0.07);
    --glass-blur: blur(12px) saturate(160%);

    /* --- TEXTOS --- */
    --text-main: #1e293b;
    --text-muted: #64748b;      
    
    /* --- TRANSICIONES --- */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
    max-width: 100%;
    overflow-x: hidden;
}

/* ============================================================
   ESTILOS BASE DE TARJETAS (GLASS MORPHISM)
   Se combinan .glass-card y .index-card para eliminar redundancia
   ============================================================ */
.glass-card, .index-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: 0 8px 32px 0 var(--glass-shadow);
    transition: var(--transition-smooth);   
}
/* Asegurar que el span no interfiera */
.glass-card span, .index-card span {
    position: relative;
    z-index: 2;
}

/* Hover de tarjetas generales */
.glass-card:hover {
    border-color: var(--accent-color);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

/* Hover específico del Index Card (más elevación) */
.index-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.6) !important;
    border-color: var(--accent-color) !important;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08) !important;
}

/* ============================================================
   FORMULARIO CONTACTO
   ============================================================ */
.form-glass {
    background: rgba(255, 255, 255, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 14px 18px;
    width: 100%;
    color: var(--text-main);
    transition: var(--transition-smooth);
}

.form-glass:focus {
    background: rgba(255, 255, 255, 0.6);
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.contact-wrapper {
    background-color: var(--bg-page);
    background-image: 
        radial-gradient(at 0% 0%, rgba(0, 212, 255, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(0, 212, 255, 0.1) 0px, transparent 50%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin-bottom: 0 !important;
    padding-bottom: 0 !important;
}

.contact-wrapper > section:last-of-type {
    margin-bottom: 0 !important;
    padding-bottom: 80px; 
}

/* Estado Válido */
.form-glass.is-valid-glass {
    border-color: #2ecc71 !important;
    box-shadow: 0 0 10px rgba(46, 204, 113, 0.2);
    background: rgba(46, 204, 113, 0.05);
}

/* Estado Inválido */
.form-glass.is-invalid-glass {
    border-color: #e74c3c !important;
    box-shadow: 0 0 10px rgba(231, 76, 60, 0.2);
    background: rgba(231, 76, 60, 0.05);
    animation: shake 0.2s ease-in-out 0s 2;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.error-text {
    font-size: 0.7rem;
    color: #e74c3c;
    margin-top: 4px;
    font-weight: 600;
    display: none;
}

/* ============================================================
   ESTILOS PREMIUM SUMAK - IDENTIDAD CIAN & GLASS
   ============================================================ */

/* Navbar base que permite transición suave */
.navbar-custom-base {
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
    background-color: transparent !important;
    border-bottom: 1px solid transparent;
}

/* Navbar al hacer scroll (color sólido) */
.navbar-scrolled {
    background-color: var(--bg-page) !important; /* Color sólido sin transparencias */
    border-bottom: 1px solid rgba(45, 139, 158, 0.15) !important;
    box-shadow: 0 4px 30px rgba(31, 38, 135, 0.05);
    padding-top: 0.75rem !important;
    padding-bottom: 0.75rem !important;
}

/* Transiciones para los links y marca */
.navbar-custom-base .nav-link,
.navbar-custom-base .navbar-brand {
    transition: var(--transition-smooth);
}

.navbar-custom-base .navbar-brand img {
    height: 85px;
    transition: height 0.3s ease;
}

.navbar-scrolled .navbar-brand img {
    height: 70px;
}

/* Ajustes de color para navbar-light (modo claro) */
.navbar-custom-base.navbar-light .nav-link {
    color: var(--text-main) !important;
}
.navbar-custom-base.navbar-light .nav-link:hover {
    color: var(--accent-color) !important;
}

/* Ajustes de color para navbar-dark (modo transparente sobre héroe oscuro) */
.navbar-custom-base.navbar-dark .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
}
.navbar-custom-base.navbar-dark .nav-link:hover {
    color: #4eb5c9 !important; /* cian claro */
}

/* Suavizamos el fondo oscuro para que el vidrio resalte */
.hero-glass-overlay {
    background: rgba(0, 0, 0, 0.35) !important;
    backdrop-filter: blur(4px); 
    -webkit-backdrop-filter: blur(4px);
    z-index: 0;
}

/* Rectángulos bajo las imágenes de los Pilares */
.glass-decorator {
    background: rgba(45, 139, 158, 0.15) !important; /* Cian al 15% */
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--accent-color);
    z-index: 0;
}

/* Textos especiales */
.text-glass-dark {
    color: var(--text-main);
    font-weight: 700;
}

.text-primary-light {
    color: #4eb5c9 !important; /* Cian claro para contraste en hero */
    display: inline-block;
}

.text-primary {
    color: var(--accent-color) !important;
}

/* Unificación Botones Primary */
.btn-primary {
    background-color: var(--accent-color) !important;
    border-color: var(--accent-color) !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05) !important;
    transition: var(--transition-smooth) !important;
}

.btn-primary:hover {
    background-color: #246f7e !important;
    border-color: #246f7e !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1) !important;
}

.btn-primary.rounded-pill {
    color: white !important;
}

/* Unificación Botones Outline */
.btn-outline-primary {
    color: var(--accent-color) !important;
    border-color: var(--accent-color) !important;
    background-color: transparent !important;
    transition: all 0.3s ease !important;
}
.btn-outline-primary:hover {
    background-color: var(--accent-color) !important;
    color: white !important;
}

.btn-outline-light {
    border-width: 2px !important;
    transition: var(--transition-smooth) !important;
}
.btn-outline-light:hover {
    background-color: white !important;
    color: var(--text-main) !important;
}

/* Utilidades básicas repediadas unificadas */
.bg-primary {
    background-color: var(--accent-color) !important;
}
.border-primary {
    border-color: var(--accent-color) !important;
}

/* ============================================================
   UTILIDADES ADICIONALES SUMAK
=============================================================== */

@media (min-width: 768px) {
    .border-start-md {
        border-left: 1px solid rgba(255, 255, 255, 0.1) !important;
    }
}

.fade-out {
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

/* Tipografía de Alto Impacto */
.tracking-tight { letter-spacing: -0.02em; }
.leading-relaxed { line-height: 1.8; }

/* Espaciado de secciones Hero */
.py-lg-10 {
    padding-top: 8rem !important;
    padding-bottom: 8rem !important;
}

/* Redondeado de secciones grandes */
.rounded-5-top { border-top-left-radius: 50px; border-top-right-radius: 50px; }
.rounded-5-bottom { border-bottom-left-radius: 50px; border-bottom-right-radius: 50px; }

/* Efectos UI Avanzados */
.glow-line {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition-smooth);
    transform: translateX(-50%);
}
.glass-card-dark:hover .glow-line {
    width: 80%;
}

.hover-scale { transition: var(--transition-smooth); }
.hover-scale:hover { transform: scale(1.05); }
.group:hover .group-hover-opacity-25 { opacity: 0.25 !important; }

/* Interacción de Selección */
.user-select-all {
    user-select: all !important;
    -webkit-user-select: all !important;
}

@media (max-width: 767.98px) {
    .py-lg-10 {
        padding-top: 4rem !important;
        padding-bottom: 4rem !important;
    }
    .rounded-5-top, .rounded-5-bottom { 
        border-radius: 30px; 
    }
}

/* ============================================================
   SCROLLBAR FLOTANTE ULTRA-MINIMALISTA
   ============================================================ */
::-webkit-scrollbar {
    width: 8px; 
    height: 8px; 
    background-color: transparent !important; 
}

::-webkit-scrollbar-button {
    display: none !important;
    width: 0;
    height: 0;
}

::-webkit-scrollbar-track {
    background-color: transparent !important;
    border: none !important;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.2) !important; 
    border-radius: 10px;
    border: 2px solid transparent !important; 
    background-clip: content-box !important; 
}
::-webkit-scrollbar-thumb:hover {
    background-color: rgba(0, 0, 0, 0.4) !important; 
}

/* Compatibilidad Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.2) transparent;
}

/* ============================================================
   BOTÓN FLOTANTE DE WHATSAPP
   ============================================================ */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: white !important;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 9999;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
}

.whatsapp-btn:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.6);
    background-color: #20ba5a;
}

/* Efecto de onda pulsante premium */
.whatsapp-btn::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #25d366;
    opacity: 0.4;
    z-index: -1;
    animation: pulse-ring 2s cubic-bezier(0.215, 0.610, 0.355, 1) infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.95);
        opacity: 0.5;
    }
    50% {
        opacity: 0.3;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}