/* ==========================================================================
   FALLBACK LANDING PAGE - SISTEMA DE DISEÑO BDI ANALYTICS
   Sleek Dark Theme with Glassmorphism, Glow effects, and Film Grain
   ========================================================================== */

/* 1. VARIABLES DE DISEÑO */
:root {
    --bg-dark: #090c13;          /* Fondo OLED muy oscuro azul/gris */
    --card-bg: rgba(13, 20, 32, 0.75); /* Fondo de tarjeta de vidrio */
    --card-border: rgba(255, 255, 255, 0.06); /* Borde de vidrio sutil */
    
    --text-primary: #ffffff;
    --text-muted: #94a3b8;        /* Gris pizarra suave */
    
    --accent-color: #34ad87;      /* Verde menta/esmeralda BDI */
    --accent-glow: rgba(52, 173, 135, 0.15);
    --gold-accent: #e2b87f;       /* Dorado elegante */
    
    /* Animaciones */
    --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: all 0.8s var(--ease-premium);
    --transition-medium: all 0.5s var(--ease-premium);
    --transition-fast: all 0.25s ease;
}

/* 2. RESET & ESTILOS BASE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    width: 100%;
    min-height: 100vh;
    background-color: var(--bg-dark);
    /* Imagen de fondo oficial de BDI con mezcla oscura */
    background-image: linear-gradient(to bottom, rgba(9, 12, 19, 0.85) 0%, rgba(9, 12, 19, 0.95) 100%), 
                      url("https://d1yei2z3i6k35z.cloudfront.net/2013942/6a206b67dbe466.50078050_background_chapGTP.png");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: 'Open Sans', sans-serif;
    overflow-x: hidden;
    position: relative;
}

/* 3. EFECTO DE GRANO DE CINE (FILM GRAIN) */
.film-grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.02;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* 4. GRADIENTES DE FONDO ANIMADOS */
.bg-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.glow-1 {
    position: absolute;
    top: -20%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 173, 135, 0.08) 0%, rgba(0, 0, 0, 0) 70%);
    filter: blur(80px);
    animation: pulseGlow 12s infinite alternate var(--ease-premium);
}

.glow-2 {
    position: absolute;
    bottom: -10%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 173, 135, 0.05) 0%, rgba(0, 0, 0, 0) 70%);
    filter: blur(80px);
    animation: pulseGlow 15s infinite alternate-reverse var(--ease-premium);
}

@keyframes pulseGlow {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.15) translate(5%, 5%); }
}

/* 5. CONTENEDOR PRINCIPAL Y MAQUETACIÓN */
.main-container {
    position: relative;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 3rem 1.5rem;
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5),
                inset 0 1px 0px rgba(255, 255, 255, 0.05);
    border-radius: 2rem;
    transition: var(--transition-slow);
}

.main-card {
    max-width: 860px;
    width: 100%;
    padding: 4rem;
    position: relative;
    overflow: hidden;
}

/* 6. CABECERA & BADGES */
.status-header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo-container {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.bdi-logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
    filter: drop-shadow(0 0 15px rgba(52, 173, 135, 0.2));
    animation: floatLogo 6s ease-in-out infinite;
}

@keyframes floatLogo {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 100px;
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-color);
    position: relative;
}

.pulse-dot::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--accent-color);
    animation: dotPulse 2s infinite ease-out;
}

@keyframes dotPulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(3); opacity: 0; }
}

.main-title {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(2rem, 5vw, 2.8rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.main-title span {
    color: var(--accent-color);
    text-shadow: 0 0 20px rgba(52, 173, 135, 0.2);
}

.main-description {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto;
}

.divider {
    width: 100%;
    height: 1px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 100%);
    margin: 3rem 0;
}

/* 7. SECCIÓN DE RECURSOS (GRID Y CARDS) */
.resources-section {
    margin-bottom: 3.5rem;
}

.section-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.resources-grid {
    display: grid;
    grid-template-cols: 1fr;
    gap: 1.25rem;
}

.dynamic-split-grid {
    grid-template-cols: 1fr;
}

@media (min-width: 768px) {
    .dynamic-split-grid {
        grid-template-cols: 1fr 1fr;
        gap: 1.5rem;
    }
    
    .resource-card {
        flex-direction: column;
        height: 100%;
        padding: 2.25rem;
    }
    
    .card-icon {
        margin-bottom: 1.25rem;
    }
}

.resource-card {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 1.25rem;
    padding: 1.75rem;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    transition: var(--transition-medium);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 100px 50px, var(--accent-glow) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition-medium);
    pointer-events: none;
    z-index: 1;
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 3.25rem;
    height: 3.25rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--accent-color);
    transition: var(--transition-medium);
    flex-shrink: 0;
    z-index: 2;
}

.card-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.card-content {
    flex: 1;
    z-index: 2;
}

.card-content h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    transition: var(--transition-medium);
}

.card-content p {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.card-cta {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-color);
    transition: var(--transition-medium);
}

/* Card Hover Physics */
.resource-card:hover {
    background: rgba(255, 255, 255, 0.035);
    border-color: rgba(52, 173, 135, 0.25);
    transform: translateY(-3px);
}

.resource-card:hover .card-glow {
    opacity: 1;
}

.resource-card:hover .card-icon {
    background: var(--accent-color);
    color: #ffffff;
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(52, 173, 135, 0.3);
}

.resource-card:hover .card-content h3 {
    color: var(--accent-color);
}

.resource-card:hover .card-cta {
    color: var(--text-primary);
    transform: translateX(3px);
}

/* 8. FOOTER / ETIQUETAS DE DOMINIOS */
.fallback-footer {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 2rem;
}

.fallback-footer p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.domain-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.domain-badge {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.domain-badge.active {
    background: var(--accent-glow);
    border-color: var(--accent-color);
    color: var(--accent-color);
    font-weight: 600;
}

/* 9. MEDIA QUERIES */
@media (max-width: 768px) {
    .main-card {
        padding: 2.5rem 1.5rem;
        border-radius: 1.5rem;
    }
    
    .status-badge {
        margin-bottom: 1.5rem;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .resource-card {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }
}

/* 10. BDI FOOTER STYLING */
.mini-divider {
    margin: 1.5rem 0 !important;
}

.bdi-copyright {
    font-family: 'Open Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 400;
    color: rgba(149, 149, 149, 0.8);
    letter-spacing: 0.5px;
    margin-top: 1rem;
    text-align: center;
}