/* --- VARIABLES Y CONFIGURACIÓN BASE --- */
:root {
    --bg-dark: #0b0f19;
    --accent-blue: #3b82f6;
    --accent-purple: #a855f7;
}

body {
    background-color: var(--bg-dark);
    /* Fondo con esferas de color difuminadas */
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.15) 0%, transparent 40%);
    background-attachment: fixed;
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
}

/* --- CENTRADO TOTAL --- */
.full-center {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

/* --- IDENTIDAD VISUAL (LOGO) --- */
.brand-box {
    background-color: #000000;
    color: #ffffff;
    padding: 12px 24px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 3px;
    display: inline-block;
    text-decoration: none;
    margin-bottom: 2.5rem; /* Espacio entre logo y tarjeta */
    transition: transform 0.3s ease;
}

.brand-box:hover {
    color: #ffffff;
    transform: scale(1.05);
}

/* --- TARJETA GLASSMORPHISM --- */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 2.5rem;
    padding: 4rem 2rem;
    max-width: 950px;
    width: 100%;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.badge-ai {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 2px;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.8);
}

.gradient-title {
    background: linear-gradient(180deg, #ffffff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

/* --- TEXTO Y ENLACES --- */
.desc-text {
    max-width: 750px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.nav-link-custom {
    color: rgba(255, 255, 255, 0.7) !important;
    text-decoration: none;
    transition: 0.3s;
}

.nav-link-custom:hover {
    color: #ffffff !important;
}