/* ========================================
   BLOG SECTION - ULTRA PREMIUM CON ANIMACIONES AVANZADAS
   ======================================== */
.cu-blog {
    padding: clamp(5rem, 10vw, 8rem) 0;
    background: linear-gradient(180deg, 
        rgba(255, 255, 255, 1) 0%,
        rgba(248, 250, 252, 1) 50%,
        rgba(255, 255, 255, 1) 100%
    );
    position: relative;
    overflow: hidden;
}

/* Orbes animados de fondo */
.cu-blog::before,
.cu-blog::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.05;
    animation: float-blog 30s ease-in-out infinite;
    pointer-events: none;
}

.cu-blog::before {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #8338ec, #00b4d8);
    top: -10%;
    left: -5%;
    animation-delay: 0s;
}

.cu-blog::after {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, #ff006e, #8338ec);
    bottom: -10%;
    right: -5%;
    animation-delay: 7s;
}

@keyframes float-blog {
    0%, 100% { transform: translate(0, 0) scale(1) rotate(0deg); }
    33% { transform: translate(-40px, 40px) scale(1.1) rotate(120deg); }
    66% { transform: translate(40px, -40px) scale(0.9) rotate(240deg); }
}

.cu-blog .container {
    position: relative;
    z-index: 1;
}

/* Grid responsive con animación */
.cu-blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 350px), 1fr));
    gap: clamp(1.5rem, 3vw, 2.5rem);
}

/* Card con efectos 3D */
.cu-blog-card {
    background: #ffffff;
    border: 2px solid rgba(0, 0, 0, 0.06);
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.06),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
    position: relative;
    animation: fadeInUp 0.6s ease-out backwards;
    transform-style: preserve-3d;
}

.cu-blog-card:nth-child(1) { animation-delay: 0.1s; }
.cu-blog-card:nth-child(2) { animation-delay: 0.2s; }
.cu-blog-card:nth-child(3) { animation-delay: 0.3s; }

.cu-blog-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(255, 0, 110, 0.05) 0%, 
        rgba(131, 56, 236, 0.05) 100%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.cu-blog-card:hover {
    transform: translateY(-15px) scale(1.02);
    border-color: rgba(255, 0, 110, 0.2);
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(255, 0, 110, 0.3) inset,
        0 0 60px rgba(255, 0, 110, 0.15);
}

.cu-blog-card:hover::before {
    opacity: 1;
}

/* Imagen con overlay y efectos */
.cu-blog-img {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.cu-blog-img img {
    width: 100%; 
    height: 100%;
    object-fit: cover;
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    filter: brightness(0.95) saturate(1.1);
}

.cu-blog-card:hover .cu-blog-img img {
    transform: scale(1.15) rotate(2deg);
    filter: brightness(0.7) saturate(1.3);
}

/* Overlay con gradiente */
.cu-blog-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, 
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0.3) 60%,
        rgba(0, 0, 0, 0.6) 100%
    );
    opacity: 0;
    transition: opacity 0.4s ease;
}

.cu-blog-card:hover .cu-blog-img::after {
    opacity: 1;
}

/* Badge de fecha con animación */
.cu-blog-date {
    position: absolute;
    top: 1.5rem; 
    right: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 0.8rem 1rem;
    border-radius: 16px;
    text-align: center;
    border: 2px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    z-index: 2;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cu-blog-card:hover .cu-blog-date {
    transform: translateY(-5px) scale(1.05);
    background: linear-gradient(135deg, #ff006e, #8338ec);
    border-color: transparent;
}

.cu-blog-date strong {
    display: block;
    font-size: 1.8rem;
    color: #ff006e;
    line-height: 1;
    font-weight: 900;
    transition: color 0.3s ease;
}

.cu-blog-card:hover .cu-blog-date strong {
    color: #ffffff;
}

.cu-blog-date span {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: #64748b;
    font-weight: 700;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.cu-blog-card:hover .cu-blog-date span {
    color: rgba(255, 255, 255, 0.9);
}

/* Badge de categoría */
.cu-blog-category {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #ff006e;
    border: 2px solid rgba(255, 255, 255, 0.5);
    z-index: 2;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cu-blog-card:hover .cu-blog-category {
    opacity: 1;
    transform: translateY(0);
}

/* Contenido del card */
.cu-blog-content {
    padding: clamp(1.5rem, 3vw, 2rem);
    position: relative;
    z-index: 1;
}

/* Meta información con iconos */
.cu-blog-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.8rem;
    color: #64748b;
    margin-bottom: 1rem;
    font-weight: 600;
    flex-wrap: wrap;
}

.cu-blog-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.3s ease;
}

.cu-blog-meta i {
    color: #ff006e;
    font-size: 0.9rem;
}

.cu-blog-card:hover .cu-blog-meta span {
    color: #ff006e;
}

/* Título con animación */
.cu-blog-title {
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    font-family: var(--cu-font-heading);
    margin-bottom: 1rem;
    line-height: 1.4;
    font-weight: 800;
}

.cu-blog-title a {
    color: #1e293b;
    text-decoration: none;
    transition: all 0.4s ease;
    position: relative;
    display: inline-block;
}

.cu-blog-title a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff006e 0%, #8338ec 100%);
    transition: width 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.cu-blog-card:hover .cu-blog-title a {
    background: linear-gradient(135deg, #ff006e 0%, #8338ec 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cu-blog-card:hover .cu-blog-title a::after {
    width: 100%;
}

/* Excerpt con fade */
.cu-blog-excerpt {
    color: #64748b;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Botón "Leer más" con efectos avanzados */
.cu-blog-readmore {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.8rem;
    background: rgba(0, 0, 0, 0.02);
    border: 2px solid rgba(0, 0, 0, 0.08);
    border-radius: 50px;
    color: #1e293b;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    overflow: hidden;
}

.cu-blog-readmore::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #ff006e 0%, #8338ec 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.cu-blog-readmore i {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    z-index: 1;
}

.cu-blog-readmore span {
    position: relative;
    z-index: 1;
}

.cu-blog-card:hover .cu-blog-readmore {
    border-color: transparent;
    color: #ffffff;
    transform: translateX(5px);
    box-shadow: 0 8px 25px rgba(255, 0, 110, 0.3);
}

.cu-blog-card:hover .cu-blog-readmore::before {
    opacity: 1;
}

.cu-blog-card:hover .cu-blog-readmore i {
    transform: translateX(5px);
}

/* Tags del post */
.cu-blog-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.cu-blog-tag {
    padding: 0.4rem 0.8rem;
    background: rgba(255, 0, 110, 0.08);
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    color: #ff006e;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.cu-blog-tag:hover {
    background: linear-gradient(135deg, #ff006e, #8338ec);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Efecto de brillo en hover */
@keyframes shine-blog {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

.cu-blog-img::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.5) 50%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 3;
}

.cu-blog-card:hover .cu-blog-img::before {
    opacity: 1;
    animation: shine-blog 1.5s ease-in-out;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablets */
@media (max-width: 1024px) {
    .cu-blog-grid {
        grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    }

    .cu-blog-img {
        height: 240px;
    }
}

/* Móviles grandes */
@media (max-width: 768px) {
    .cu-blog {
        padding: clamp(3rem, 8vw, 5rem) 0;
    }

    .cu-blog-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cu-blog-img {
        height: 220px;
    }

    .cu-blog-date {
        top: 1rem;
        right: 1rem;
        padding: 0.6rem 0.8rem;
    }

    .cu-blog-date strong {
        font-size: 1.5rem;
    }

    .cu-blog-category {
        bottom: 1rem;
        left: 1rem;
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
    }

    .cu-blog-content {
        padding: 1.5rem;
    }

    .cu-blog-meta {
        font-size: 0.75rem;
        gap: 1rem;
    }

    .cu-blog-title {
        font-size: 1.2rem;
    }

    .cu-blog-excerpt {
        font-size: 0.9rem;
    }

    .cu-blog-readmore {
        padding: 0.7rem 1.5rem;
        font-size: 0.75rem;
    }
}

/* Móviles pequeños */
@media (max-width: 480px) {
    .cu-blog-img {
        height: 200px;
    }

    .cu-blog-date {
        padding: 0.5rem 0.7rem;
    }

    .cu-blog-date strong {
        font-size: 1.3rem;
    }

    .cu-blog-date span {
        font-size: 0.7rem;
    }

    .cu-blog-content {
        padding: 1.2rem;
    }

    .cu-blog-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .cu-blog-title {
        font-size: 1.1rem;
    }

    .cu-blog-readmore {
        width: 100%;
        justify-content: center;
        padding: 0.8rem 1.5rem;
    }

    .cu-blog-tags {
        gap: 0.4rem;
    }

    .cu-blog-tag {
        font-size: 0.65rem;
        padding: 0.3rem 0.6rem;
    }
}