/* Responsive 100dvh */
html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100dvh;
    background-color: #050505;
    color: #ffffff;
    overflow: hidden;
    /* Evita scroll en la pantalla 404 */
}

/* Overlay de ruido sutil */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
    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)' opacity='0.04'/%3E%3C/svg%3E");
}

/* Gradiente Dorado Brillante Animado */
.gold-shiny-bg {
    background: linear-gradient(110deg,
            #AA8A29 0%,
            #D4AF37 25%,
            #F9E596 50%,
            #D4AF37 75%,
            #AA8A29 100%);
    background-size: 200% auto;
    color: #000;
    transition: all 0.3s ease;
}

.gold-shiny-bg:hover {
    animation: goldShine 2s linear infinite;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -5px rgba(212, 175, 55, 0.4);
}

.gold-shiny-text {
    background: linear-gradient(110deg,
            #AA8A29 0%,
            #D4AF37 25%,
            #F9E596 50%,
            #D4AF37 75%,
            #AA8A29 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: goldShine 3s linear infinite;
}

@keyframes goldShine {
    to {
        background-position: 200% center;
    }
}

/* Efectos de fondo */
.glow-behind {
    position: fixed;
    width: 80vw;
    height: 80vw;
    max-width: 800px;
    max-height: 800px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.08) 0%, transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
}

/* Componente Glassmorphism */
.glass-card {
    background-color: rgba(20, 20, 20, 0.5);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 1px solid rgba(212, 175, 55, 0.3);
    box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.9), inset 0 2px 15px rgba(255, 255, 255, 0.02);
}

/* Número 404 gigante */
.massive-404 {
    font-size: clamp(6rem, 20vw, 12rem);
    line-height: 1;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    letter-spacing: -0.05em;
}