/* Fullscreen Image Viewer */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    display: flex;
    flex-direction: column;
}

.image-viewer.hidden {
    display: none;
}

.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.viewer-header h3 {
    color: white;
    font-size: 1.2rem;
}

.viewer-close {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.viewer-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.viewer-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.viewer-content {
    position: relative;
    cursor: grab;
    transition: transform 0.2s ease;
    touch-action: none;
}

.viewer-content:active {
    cursor: grabbing;
}

.viewer-content img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}

.viewer-canvas {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

.viewer-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.viewer-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.1rem;
    min-width: 60px;
    transition: all 0.2s;
}

.viewer-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

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

/* Responsive adjustments for viewer */
@media (max-width: 768px) {
    .viewer-header {
        padding: 0.5rem;
    }
    
    .viewer-controls {
        padding: 0.5rem;
        gap: 0.5rem;
    }
    
    .viewer-btn {
        padding: 0.4rem 0.8rem;
        font-size: 1rem;
        min-width: 50px;
    }
}