/* ==========================================================================
   Universal Lightbox - Modern Image Viewer with Zoom & Pan
   ========================================================================== */

/* Lightbox Overlay */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 20000;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox-overlay.active {
    display: flex;
    opacity: 1;
}

/* Lightbox Container */
.lightbox-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

/* Unified Label */
.lightbox-unified-label {
    position: absolute;
    top: 15px;
    left: 15px;
    font-size: 10px;
    background: #28a745;
    color: white;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
}

/* Image Container */
.lightbox-image-container {
    position: relative;
    max-width: 90vw;
    max-height: 80vh;
    cursor: grab;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.lightbox-image-container.grabbing {
    cursor: grabbing;
}

.lightbox-image {
    max-width: 100%;
    max-height: 100%;
    display: block;
    transform-origin: center center;
    transition: transform 0.1s ease-out;
}

/* Controls Bar */
.lightbox-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-secondary, rgba(26, 26, 26, 0.9));
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--color-border-default, rgba(51, 51, 51, 0.5));
    z-index: 100;
}

/* Control Buttons */
.lightbox-btn {
    background: transparent;
    border: none;
    color: var(--color-text-primary, #fff);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    width: 36px;
    height: 36px;
}

.lightbox-btn:hover {
    background: var(--color-bg-tertiary, rgba(42, 42, 42, 0.8));
    transform: scale(1.05);
}

.lightbox-btn:active {
    transform: scale(0.95);
}

.lightbox-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.lightbox-btn.disabled:hover {
    background: transparent;
    transform: none;
}

.lightbox-btn.active {
    background: var(--color-primary, #3498db);
    color: #fff;
}

/* Zoom Level Indicator */
.lightbox-zoom-level {
    color: var(--color-text-secondary, #ccc);
    font-size: 12px;
    font-weight: 500;
    min-width: 40px;
    text-align: center;
}

/* Close Button */
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--color-bg-secondary, rgba(26, 26, 26, 0.9));
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border-default, rgba(51, 51, 51, 0.5));
    color: var(--color-text-primary, #fff);
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 18px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.lightbox-close:hover {
    background: var(--color-bg-tertiary, rgba(42, 42, 42, 0.8));
    transform: scale(1.05);
}

/* Navigation Arrows */
.lightbox-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-bg-secondary, rgba(26, 26, 26, 0.9));
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border-default, rgba(51, 51, 51, 0.5));
    color: var(--color-text-primary, #fff);
    cursor: pointer;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 20px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10001;
}

.lightbox-nav:hover {
    background: var(--color-bg-tertiary, rgba(42, 42, 42, 0.8));
    transform: translateY(-50%) scale(1.05);
}

.lightbox-nav.prev {
    left: 20px;
}

.lightbox-nav.next {
    right: 20px;
}

.lightbox-nav.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Loading State */
.lightbox-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-text-primary, #fff);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lightbox-loading::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-text-secondary, #ccc);
    border-top: 2px solid var(--color-primary, #3498db);
    border-radius: 50%;
    animation: lightbox-spin 1s linear infinite;
}

@keyframes lightbox-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Image Counter */
.lightbox-counter {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--color-bg-secondary, rgba(26, 26, 26, 0.9));
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border-default, rgba(51, 51, 51, 0.5));
    color: var(--color-text-primary, #fff);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    z-index: 100;
}

/* Image Info */
.lightbox-info {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--color-bg-secondary, rgba(26, 26, 26, 0.9));
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border-default, rgba(51, 51, 51, 0.5));
    color: var(--color-text-primary, #fff);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 400;
    max-width: 300px;
    z-index: 10001;
}

.lightbox-info-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.lightbox-info-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary, #fff);
    line-height: 1.3;
    word-break: break-word;
}

.lightbox-info-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
    color: var(--color-text-secondary, #ccc);
    font-size: 11px;
}

.lightbox-info-dimensions,
.lightbox-info-size {
    display: flex;
    align-items: center;
    gap: 4px;
}

.lightbox-info-dimensions::before {
    content: '\f545';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 10px;
}

.lightbox-info-size::before {
    content: '\f0c7';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .lightbox-controls {
        bottom: 10px;
        padding: 10px 12px;
        gap: 12px;
    }
    
    .lightbox-btn {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .lightbox-close {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .lightbox-nav {
        width: 36px;
        height: 36px;
        font-size: 16px;
        padding: 8px;
    }
    
    .lightbox-nav.prev {
        left: 10px;
    }
    
    .lightbox-nav.next {
        right: 10px;
    }
    
    .lightbox-counter {
        top: 10px;
        left: 10px;
        font-size: 11px;
    }
    
    .lightbox-info {
        top: 10px;
        left: 10px;
        padding: 10px 12px;
        max-width: 250px;
    }
    
    .lightbox-info-title {
        font-size: 13px;
    }
    
    .lightbox-info-details {
        font-size: 10px;
    }
}

/* Touch Device Optimizations */
@media (pointer: coarse) {
    .lightbox-btn {
        min-width: 44px;
        min-height: 44px;
    }
    
    .lightbox-nav {
        min-width: 48px;
        min-height: 48px;
    }
}

/* Keyboard Navigation Focus */
.lightbox-btn:focus,
.lightbox-nav:focus,
.lightbox-close:focus {
    outline: 2px solid var(--color-primary, #3498db);
    outline-offset: 2px;
}