/**
 * ECG Custom Lightbox Styles - Production Ready
 */

/* Lightbox Container */
.ecg-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

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

.ecg-lightbox.ecg-opening,
.ecg-lightbox.ecg-closing {
    pointer-events: none;
}

.ecg-lightbox.ecg-active:not(.ecg-opening):not(.ecg-closing) {
    pointer-events: auto;
}

/* Overlay */
.ecg-lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.ecg-lightbox:hover .ecg-lightbox-overlay {
    background: rgba(0, 0, 0, 0.95);
}

/* Container */
.ecg-lightbox-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

/* Content */
.ecg-lightbox-content {
    position: relative;
    max-width: 95vw;
    max-height: 95vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.ecg-lightbox.ecg-active .ecg-lightbox-content {
    transform: scale(1);
}

/* Loader */
.ecg-lightbox-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    display: block;
}

.ecg-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #ffffff;
    border-radius: 50%;
    animation: ecg-spin 1s linear infinite;
}

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

/* Image */
.ecg-lightbox-image {
    max-width: 100%;
    max-height: 80vh;
    height: auto;
    width: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Image Info */
.ecg-lightbox-info {
    margin-top: 20px;
    text-align: center;
    color: #ffffff;
    max-width: 600px;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease 0.1s, transform 0.3s ease 0.1s;
}

.ecg-lightbox.ecg-active .ecg-lightbox-info {
    opacity: 1;
    transform: translateY(0);
}

.ecg-lightbox-title {
    font-size: 1.2em;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: #ffffff;
    line-height: 1.4;
}

.ecg-lightbox-description {
    font-size: 0.9em;
    margin: 0;
    opacity: 0.8;
    line-height: 1.5;
    color: #cccccc;
}

/* Controls */
.ecg-lightbox-close,
.ecg-lightbox-prev,
.ecg-lightbox-next {
    position: absolute;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    z-index: 20;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.ecg-lightbox-close:hover,
.ecg-lightbox-prev:hover,
.ecg-lightbox-next:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.ecg-lightbox-close:focus,
.ecg-lightbox-prev:focus,
.ecg-lightbox-next:focus {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

/* Close Button */
.ecg-lightbox-close {
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
}

.ecg-lightbox-close svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Navigation Buttons */
.ecg-lightbox-prev,
.ecg-lightbox-next {
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
}

.ecg-lightbox-prev:hover,
.ecg-lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

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

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

.ecg-lightbox-prev svg,
.ecg-lightbox-next svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Counter */
.ecg-lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: #ffffff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 500;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
    transition: opacity 0.3s ease 0.2s, transform 0.3s ease 0.2s;
}

.ecg-lightbox.ecg-active .ecg-lightbox-counter {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Body class when lightbox is open */
.ecg-lightbox-open {
    overflow: hidden !important;
    height: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
    .ecg-lightbox-container {
        padding: 10px;
    }
    
    .ecg-lightbox-content {
        max-width: 100vw;
        max-height: 100vh;
    }
    
    .ecg-lightbox-image {
        max-height: 70vh;
    }
    
    .ecg-lightbox-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }
    
    .ecg-lightbox-prev,
    .ecg-lightbox-next {
        width: 44px;
        height: 44px;
    }
    
    .ecg-lightbox-prev {
        left: 10px;
    }
    
    .ecg-lightbox-next {
        right: 10px;
    }
    
    .ecg-lightbox-info {
        margin-top: 15px;
        padding: 0 10px;
    }
    
    .ecg-lightbox-title {
        font-size: 1.1em;
    }
    
    .ecg-lightbox-description {
        font-size: 0.85em;
    }
    
    .ecg-lightbox-counter {
        bottom: 10px;
        font-size: 0.8em;
        padding: 6px 12px;
    }
}

@media (max-width: 480px) {
    .ecg-lightbox-image {
        max-height: 60vh;
    }
    
    .ecg-lightbox-prev,
    .ecg-lightbox-next {
        width: 38px;
        height: 38px;
    }
    
    .ecg-lightbox-prev svg,
    .ecg-lightbox-next svg {
        width: 20px;
        height: 20px;
    }
    
    .ecg-lightbox-info {
        max-width: 100%;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .ecg-lightbox-overlay {
        background: rgba(0, 0, 0, 1);
    }
    
    .ecg-lightbox-close,
    .ecg-lightbox-prev,
    .ecg-lightbox-next {
        background: rgba(255, 255, 255, 0.9);
        color: #000000;
    }
    
    .ecg-lightbox-counter {
        background: rgba(255, 255, 255, 0.9);
        color: #000000;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .ecg-lightbox,
    .ecg-lightbox-content,
    .ecg-lightbox-image,
    .ecg-lightbox-info,
    .ecg-lightbox-counter,
    .ecg-lightbox-close,
    .ecg-lightbox-prev,
    .ecg-lightbox-next {
        transition: none !important;
        animation: none !important;
    }
    
    .ecg-spinner {
        animation: none !important;
    }
}

/* Print Styles */
@media print {
    .ecg-lightbox {
        display: none !important;
    }
}

/* Focus Styles for Accessibility */
.ecg-lightbox-close:focus-visible,
.ecg-lightbox-prev:focus-visible,
.ecg-lightbox-next:focus-visible {
    outline: 3px solid #4A90E2;
    outline-offset: 2px;
}