/* ===================================
   Lightbox Modal Styles
   Provides click-to-magnify functionality for images
   =================================== */

/* Modal Container */
.lightbox-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    justify-content: center;
    align-items: center;
}

.lightbox-modal.active {
    display: flex;
}

/* Modal Content */
.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
    transition: transform 0.3s ease;
    cursor: grab;
}

.lightbox-image.zoomed {
    cursor: move;
    max-width: none;
    max-height: none;
}

.lightbox-content.zoomed {
    overflow: auto;
    cursor: move;
}

/* Close Button */
.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #ffffff;
    cursor: pointer;
    background: none;
    border: none;
    padding: 10px;
    line-height: 1;
    transition: color 0.3s ease;
    z-index: 10000;
}

.lightbox-close:hover,
.lightbox-close:focus {
    color: #cccccc;
    outline: none;
}

/* Zoom Controls */
.lightbox-zoom-controls {
    position: absolute;
    bottom: 30px;
    right: 30px;
    display: flex;
    gap: 10px;
    z-index: 10000;
}

.lightbox-zoom-btn {
    width: 45px;
    height: 45px;
    background-color: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    user-select: none;
}

.lightbox-zoom-btn:hover {
    background-color: rgba(0, 0, 0, 0.9);
    border-color: rgba(255, 255, 255, 0.6);
    transform: scale(1.1);
}

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

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

.lightbox-zoom-btn:disabled:hover {
    background-color: rgba(0, 0, 0, 0.7);
    transform: scale(1);
}

.lightbox-zoom-level {
    background-color: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 70px;
}

/* ===================================
   Responsive Image Styles
   Applied to images with lightbox functionality
   =================================== */

.responsive-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.responsive-image:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ===================================
   Academic Figure Styles
   Semantic styling for figures with captions
   =================================== */

.academic-figure {
    margin: 2rem auto;
    max-width: 100%;
    text-align: center;
}

.academic-figure figcaption {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    font-style: italic;
    color: #555555;
    text-align: center;
    line-height: 1.6;
}

.figure-label {
    font-weight: 600;
    color: #333333;
    font-style: normal;
}

.figure-caption {
    display: inline;
}

/* ===================================
   Mobile Responsiveness
   =================================== */

/* Click to expand hint */
.expand-hint {
    font-size: 0.85em;
    color: #666666;
    font-style: italic;
    font-weight: normal;
    margin-left: 0.5em;
}

@media (max-width: 768px) {
    .lightbox-close {
        top: 10px;
        right: 10px;
        font-size: 30px;
    }
    
    .lightbox-content {
        max-width: 95%;
        max-height: 95%;
    }
    
    .academic-figure {
        margin: 1.5rem auto;
    }
    
    .academic-figure figcaption {
        font-size: 0.85rem;
    }
    
    .lightbox-zoom-controls {
        bottom: 15px;
        right: 15px;
        gap: 8px;
    }
    
    .lightbox-zoom-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .lightbox-zoom-level {
        padding: 8px 15px;
        font-size: 12px;
        min-width: 60px;
    }
}

@media (max-width: 480px) {
    .lightbox-close {
        font-size: 24px;
        padding: 8px;
    }
    
    .lightbox-zoom-controls {
        bottom: 10px;
        right: 10px;
        gap: 6px;
    }
    
    .lightbox-zoom-btn {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
    
    .lightbox-zoom-level {
        padding: 6px 12px;
        font-size: 11px;
        min-width: 50px;
    }
}