/* ==========================================================================
   Portfolio CSS Específico
   Estilos para lightbox, filtros y efectos especiales
   ========================================================================== */

/* ==========================================================================
   Lightbox
   ========================================================================== */

.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    margin: auto;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    z-index: 10000;
    transition: opacity 0.3s ease;
}

.lightbox-close:hover {
    opacity: 0.7;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #fff;
    font-size: 30px;
    cursor: pointer;
    padding: 20px;
    z-index: 10000;
    transition: opacity 0.3s ease;
    user-select: none;
}

.lightbox-nav:hover {
    opacity: 0.7;
}

.lightbox-prev {
    left: -60px;
}

.lightbox-next {
    right: -60px;
}

.lightbox-caption {
    position: absolute;
    bottom: -50px;
    left: 0;
    right: 0;
    color: #fff;
    text-align: center;
    font-size: 14px;
    font-weight: 300;
}

/* ==========================================================================
   Filtros de Categoría
   ========================================================================== */

.portfolio-filters {
    padding: 20px 0;
    text-align: center;
    background-color: #000;
    border-bottom: 1px solid #333;
    position: sticky;
    top: 0;
    z-index: 100;
}

.filter-btn {
    background: none;
    border: none;
    color: #888;
    font-size: 13px;
    font-weight: 300;
    margin: 0 15px;
    padding: 8px 0;
    cursor: pointer;
    transition: color 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
}

.filter-btn:hover,
.filter-btn.active {
    color: #fff;
}

.filter-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background-color: #fff;
}

/* ==========================================================================
   Efectos de Carga y Transiciones
   ========================================================================== */

.portfolio-item {
    transition: all 0.3s ease;
}

.portfolio-item.filtering {
    opacity: 0;
    transform: scale(0.8);
}

.portfolio-item.show {
    opacity: 1;
    transform: scale(1);
}

.portfolio-item.hide {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #333;
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin: 20px auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   Masonry Layout (opcional)
   ========================================================================== */

.portfolio-masonry {
    column-count: 3;
    column-gap: 0;
}

.portfolio-masonry .portfolio-item {
    display: inline-block;
    width: 100%;
    margin-bottom: 0;
    break-inside: avoid;
}

/* ==========================================================================
   Categorías con Colores (opcional)
   ========================================================================== */

.portfolio-item[data-category="4x5"] .portfolio-overlay {
    border-left: 3px solid #ff6b6b;
}

.portfolio-item[data-category="6x7"] .portfolio-overlay {
    border-left: 3px solid #4ecdc4;
}

.portfolio-item[data-category="6x6"] .portfolio-overlay {
    border-left: 3px solid #45b7d1;
}

.portfolio-item[data-category="35mm"] .portfolio-overlay {
    border-left: 3px solid #f9ca24;
}

.portfolio-item[data-category="color"] .portfolio-overlay {
    border-left: 3px solid #f0932b;
}

.portfolio-item[data-category="polaroid"] .portfolio-overlay {
    border-left: 3px solid #eb4d4b;
}

.portfolio-item[data-category="documentary"] .portfolio-overlay {
    border-left: 3px solid #6c5ce7;
}

.portfolio-item[data-category="publication"] .portfolio-overlay {
    border-left: 3px solid #a29bfe;
}

.portfolio-item[data-category="personal"] .portfolio-overlay {
    border-left: 3px solid #fd79a8;
}

.portfolio-item[data-category="personal-color"] .portfolio-overlay {
    border-left: 3px solid #fdcb6e;
}

/* ==========================================================================
   VOGUE Label Style (como en la original)
   ========================================================================== */

.vogue-label {
    position: absolute;
    bottom: 15px;
    left: 15px;
    color: #fff;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 4px 8px;
    backdrop-filter: blur(4px);
}

.iconic-label {
    position: absolute;
    top: 15px;
    right: 15px;
    color: #ff0000;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 4px 8px;
    backdrop-filter: blur(4px);
}

/* ==========================================================================
   Responsive Lightbox
   ========================================================================== */

@media (max-width: 768px) {
    .lightbox-content {
        max-width: 95vw;
        max-height: 85vh;
    }

    .lightbox-close {
        top: -30px;
        font-size: 20px;
    }

    .lightbox-nav {
        font-size: 24px;
        padding: 15px;
    }

    .lightbox-prev {
        left: -40px;
    }

    .lightbox-next {
        right: -40px;
    }

    .lightbox-caption {
        bottom: -40px;
        font-size: 12px;
    }

    .portfolio-filters {
        padding: 15px 0;
        overflow-x: auto;
        white-space: nowrap;
    }

    .filter-btn {
        margin: 0 10px;
        font-size: 12px;
    }

    .portfolio-masonry {
        column-count: 2;
    }
}

@media (max-width: 480px) {
    .lightbox-nav {
        display: none; /* Ocultar navegación en móviles muy pequeños */
    }

    .portfolio-masonry {
        column-count: 1;
    }

    .lightbox-content {
        max-width: 98vw;
        max-height: 80vh;
    }
}

/* ==========================================================================
   Animaciones Adicionales
   ========================================================================== */

.portfolio-item img {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-item:hover img {
    transform: scale(1.02);
    filter: grayscale(0%) brightness(1.1);
}

/* Efecto de aparición en scroll */
.portfolio-item {
    opacity: 0;
    transform: translateY(20px);
    animation: slideUp 0.6s ease-out forwards;
}

.portfolio-item:nth-child(even) {
    animation-delay: 0.1s;
}

.portfolio-item:nth-child(3n) {
    animation-delay: 0.2s;
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Estados de Error
   ========================================================================== */

.portfolio-error {
    text-align: center;
    padding: 60px 20px;
    color: #888;
}

.portfolio-error h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #fff;
}

.portfolio-error p {
    font-size: 14px;
    line-height: 1.6;
}