/* ============================================ */
/* VARIABLES LOCALES PARA CATEGORIAS            */
/* ============================================ */
:root {
    --borde-tarjeta: #e2e8f0;
    --texto-secundario: #64748b;
    --color-enlace: #3b82f6;
    
    /* Degradado del Hero (Banner superior) */
    --hero-bg-1: #1e3a8a;
    --hero-bg-2: #3b82f6;
    
    /* Degradado de los círculos de iconos */
    --icono-bg-1: #1e3a8a;
    --icono-bg-2: #3b82f6;
    
    --sombra-card: rgba(0,0,0,0.1);

    /* Gradientes Neón importados del Index */
    --uiverse-gradiente: linear-gradient(163deg, #edfff8 0%, #bfc5ce 100%);
    --uiverse-shadow: rgba(52, 211, 153, 0.4);
}

body.dark-mode {
    --borde-tarjeta: #30363d;
    --texto-secundario: #9ca3af;
    --color-enlace: #60a5fa;
    
    /* Hero oscuro */
    --hero-bg-1: #0f172a; 
    --hero-bg-2: #1e1b4b; 
    
    /* Iconos vibrantes para destacar en la oscuridad */
    --icono-bg-1: #1f6feb; 
    --icono-bg-2: #388bfd;
    
    --sombra-card: rgba(0,0,0,0.5);

    /* Gradientes Neón importados del Index Oscuro */
    --uiverse-gradiente: linear-gradient(163deg, #8097906a 0%, #807d7d6e 100%);
    --uiverse-shadow: rgba(255, 255, 255, 0.1);
}

/* ============================================ */
/* HERO REDISEÑADO (DOT MATRIX + ORBES)         */
/* ============================================ */
.hero-categorias {
    position: relative;
    background: linear-gradient(135deg, var(--hero-bg-1), var(--hero-bg-2));
    color: white; 
    padding: 80px 5%;
    text-align: center;
    border-radius: 0 0 40px 40px;
    margin-bottom: 40px;
    overflow: hidden;
    border-bottom: 1px solid var(--borde-tarjeta); 
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Patrón de puntos tecnológicos */
.hero-categorias::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(rgba(255,255,255,0.15) 2px, transparent 2px);
    background-size: 30px 30px;
    z-index: 1;
}

/* Luces abstractas de fondo */
.hero-glow-1 {
    position: absolute; top: -50px; left: 10%; width: 250px; height: 250px;
    background: var(--uiverse-shadow); border-radius: 50%; filter: blur(60px); z-index: 0;
}

.hero-glow-2 {
    position: absolute; bottom: -80px; right: 15%; width: 300px; height: 300px;
    background: rgba(59, 130, 246, 0.4); border-radius: 50%; filter: blur(80px); z-index: 0;
}

.hero-categorias-content {
    position: relative;
    z-index: 2;
    animation: fadeIn 1s ease-out;
}

.hero-categorias h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: -1px;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.2);
}

.hero-categorias p {
    font-size: 1.2rem;
    font-weight: 500;
    opacity: 0.9;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================ */
/* CUADRÍCULA DE CATEGORÍAS                     */
/* ============================================ */
.categorias-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 20px 60px 20px;
}

.categorias-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* ============================================ */
/* TARJETAS NEÓN UIVERSE (ADAPTADAS)            */
/* ============================================ */
.categoria-card-wrapper {
    width: 100%; 
    background-image: var(--uiverse-gradiente);
    border-radius: 20px; 
    transition: all .3s; 
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.categoria-card-inner {
    width: 100%; 
    height: 100%; 
    background-color: var(--white);
    border-radius: 20px; 
    transition: all .2s; 
    display: flex;
    flex-direction: column; 
    align-items: center; 
    justify-content: center;
    padding: 35px 20px; 
    box-sizing: border-box;
    text-align: center;
}

.categoria-card-wrapper:hover {
    box-shadow: 0px 0px 25px 2px var(--uiverse-shadow);
    transform: translateY(-5px);
}

.categoria-card-wrapper:hover .categoria-card-inner {
    transform: scale(0.96); 
    border-radius: 18px;
}

.categoria-icono {
    width: 75px;
    height: 75px;
    background: linear-gradient(135deg, var(--icono-bg-1), var(--icono-bg-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.categoria-card-wrapper:hover .categoria-icono {
    transform: scale(1.1) rotate(5deg);
}

.categoria-icono i {
    font-size: 2rem;
    color: white; 
}

.categoria-card-inner h3 {
    color: var(--text-dark); 
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.publicaciones-count {
    font-size: 0.9rem;
    color: var(--color-enlace);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--fondo-suave);
    padding: 8px 16px;
    border-radius: 20px;
    transition: background 0.3s ease;
}

.categoria-card-wrapper:hover .publicaciones-count {
    background: var(--uiverse-shadow);
    color: var(--text-dark);
}

/* ============================================ */
/* ESTADO VACÍO (SIN CATEGORÍAS)                */
/* ============================================ */
.sin-categorias {
    text-align: center;
    padding: 60px;
    background-color: var(--white);
    border-radius: 16px;
    border: 1px solid var(--borde-tarjeta);
}
.sin-categorias i { font-size: 4rem; color: var(--texto-secundario); margin-bottom: 20px; }
.sin-categorias h3 { margin-top: 20px; color: var(--text-dark); }

/* ============================================ */
/* RESPONSIVIDAD (MEDIA QUERIES)                */
/* ============================================ */
@media (max-width: 1024px) {
    .categorias-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-categorias h1 { font-size: 3rem; }
}
@media (max-width: 768px) {
    .categorias-grid { grid-template-columns: 1fr; }
    .hero-categorias h1 { font-size: 2.5rem; }
    .hero-categorias { padding: 50px 5%; }
}

/* --- AJUSTES PARA MÓVIL (AGREGAR AL FINAL) --- */
@media (max-width: 1024px) {
    .categorias-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .categorias-grid { 
        grid-template-columns: 1fr; /* 1 sola columna en celular */
        gap: 20px;
    }
    .hero-categorias { 
        padding: 50px 5%; 
    }
    .hero-categorias h1 { 
        font-size: 2.2rem; /* Letra un poco más pequeña para que no se corte */
    }
    .categoria-card-inner {
        padding: 25px 15px; /* Menos relleno para que respire en pantallas chicas */
    }
}