/* =====================================================
   PORTFOLIO FILTER STYLES
   Estilos para los botones de filtro del portfolio
   ===================================================== */

.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-12);
    padding: var(--space-4);
}

.filter-btn {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    font-family: var(--font-body);
    color: var(--color-neutral-light);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(155, 97, 164, 0.3);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, #6a3b7e, #7d4a8f);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
    z-index: 0;
}

.filter-btn:hover::before {
    width: 300%;
    height: 300%;
}

.filter-btn span {
    position: relative;
    z-index: 1;
}

.filter-btn:hover {
    color: #FFFFFF;
    border-color: var(--color-brand-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(155, 97, 164, 0.3);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.filter-btn.active {
    color: #FFFFFF;
    background: linear-gradient(135deg, #9B61A4, #b77cc5);
    border-color: #9B61A4;
    box-shadow: 0 4px 16px rgba(155, 97, 164, 0.4);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.filter-btn.active::before {
    width: 100%;
    height: 100%;
}

.filter-btn:focus {
    outline: 2px solid #b77cc5;
    outline-offset: 2px;
}

.filter-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Portfolio Grid con transiciones */
[data-portfolio-grid] {
    transition: height var(--transition-normal) ease;
}

[data-portfolio-grid] > * {
    transition: opacity var(--transition-normal) ease, 
                transform var(--transition-normal) ease;
}

/* Portfolio Counter (opcional) */
.portfolio-count-wrapper {
    text-align: center;
    margin-top: var(--space-8);
    font-size: var(--text-sm);
    color: var(--color-neutral-medium);
}

.portfolio-count {
    font-weight: var(--font-bold);
    color: var(--color-brand-secondary);
    transition: transform var(--transition-fast);
}

/* Responsive */
@media (max-width: 640px) {
    .portfolio-filters {
        gap: var(--space-2);
        padding: var(--space-2);
    }
    
    .filter-btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-xs);
    }
}

/* Dark mode (opcional) */
@media (prefers-color-scheme: dark) {
    .filter-btn {
        background: rgba(255, 255, 255, 0.03);
    }
}

/* Animación para items que aparecen */
@keyframes filterFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

[data-portfolio-grid] > *:not([style*="display: none"]) {
    animation: filterFadeIn 400ms ease forwards;
}