/**
 * Универсальный просмотрщик фотографий
 */

.photo-viewer {
    /* Единый размер слота: превью и XXL совпадают; лимит по длинной стороне + доля вьюпорта */
    --photo-viewer-max-long-edge: 1040px;
    --photo-viewer-viewport-w-ratio: 0.85;
    --photo-viewer-viewport-h-ratio: 0.65;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Затемнение фона */
.photo-viewer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1;
}

/* Контейнер */
.photo-viewer-container {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: var(--spacing-xl);
}

/* Изображение */
.photo-viewer-image-container {
    flex: 1;
    display: flex;
    align-items: stretch;
    justify-content: center;
    width: 100%;
    max-width: 1520px;
    min-height: 0;
}

/* Колонка: кадр сверху, панель действий снизу */
.photo-viewer-image-stage {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    width: 100%;
    height: 100%;
    min-height: 0;
    min-width: 0;
}

/* Счётчик «1 / N» сверху — отступ у зоны кадра */
.photo-viewer-container:has(.photo-viewer-counter) .photo-viewer-image-container {
    padding-top: var(--spacing-2xl);
}

/* Панель под кадром: сегмент gc-btn-group — одна стеклянная плашка, квадратные ячейки */
.photo-viewer-actions-panel {
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-sm) 0;
    margin: 0;
    box-sizing: border-box;
    z-index: 5;
    pointer-events: none;
}

.photo-viewer-actions-panel .photo-viewer-actions {
    pointer-events: auto;
}

.photo-viewer-actions-segment.gc-btn-group {
    max-width: 100%;
    display: inline-flex;
    align-items: stretch;
    flex-wrap: nowrap;
    justify-content: center;
    box-sizing: border-box;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 var(--spacing-xs) var(--spacing-md) rgba(0, 0, 0, 0.35);
}

.photo-viewer-actions-segment.gc-btn-group > * + * {
    margin-left: 0;
    border-left: 1px solid rgba(255, 255, 255, 0.12);
}

/* Квадратные ячейки сегмента; фон у группы — hover только подсвечивает ячейку */
.photo-viewer-actions-segment.gc-btn-group > .gc-btn,
.photo-viewer-actions-segment.gc-btn-group > .gc-dropdown > .gc-dropdown-toggle {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    max-width: 48px;
    max-height: 48px;
    padding: 0;
    border-radius: 0;
    border: none;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.92);
    flex-shrink: 0;
    transition: background-color var(--transition-fast) var(--ease-in-out),
        color var(--transition-fast) var(--ease-in-out),
        opacity var(--transition-fast) var(--ease-in-out);
}

.photo-viewer-actions-segment.gc-btn-group > .gc-btn:hover:not(:disabled),
.photo-viewer-actions-segment.gc-btn-group > .gc-dropdown > .gc-dropdown-toggle:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.photo-viewer-actions-segment.gc-btn-group .gc-btn-primary {
    background: transparent;
    border-color: transparent;
    color: rgba(255, 255, 255, 0.92);
}

.photo-viewer-actions-segment.gc-btn-group .gc-btn-primary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.12);
    color: white;
    border-color: transparent;
}

.photo-viewer-actions-segment .photo-viewer-action-btn i {
    margin: 0 !important;
    color: inherit;
}

.photo-viewer-actions-segment.gc-btn-group > .gc-btn:disabled,
.photo-viewer-actions-segment.gc-btn-group > .gc-btn[disabled],
.photo-viewer-actions-segment.gc-btn-group > .gc-dropdown > .gc-dropdown-toggle:disabled {
    background: transparent;
    color: rgba(255, 255, 255, 0.4);
    opacity: 0.55;
}

.photo-viewer-image-stage-body {
    position: relative;
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    align-items: center;
    min-height: 0;
    min-width: 0;
    width: 100%;
}

.photo-viewer-image-stage-middle {
    position: relative;
    flex: 1 1 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    min-width: 0;
    width: 100%;
}

/* Фиксированный px-слот из JS (exif + контейнер): превью и финал одного размера */
.photo-viewer-image-slot.photo-viewer-image-slot--sized {
    flex-shrink: 0;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.photo-viewer-image-slot--sized .photo-viewer-image {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: none;
}

.photo-viewer-load-state {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-end;
    padding: 0;
    box-sizing: border-box;
    pointer-events: none;
    z-index: 3;
    transition: opacity 0.2s ease;
    border-radius: inherit;
}

.photo-viewer-load-state-inner {
    display: flex;
    flex-direction: column;
    flex: 1;
    width: 100%;
    min-height: 0;
    justify-content: flex-end;
}

.photo-viewer-load-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: var(--spacing-4xl);
}

.photo-viewer-load-state--has-preview .photo-viewer-load-center {
    display: none;
}

/* Убираем круглый индикатор по требованию — оставляем только нижнюю полоску прогресса. */
.photo-viewer-load-center {
    display: none;
}

.photo-viewer-load-pulse {
    width: var(--spacing-2xl);
    height: var(--spacing-2xl);
    border-radius: var(--radius-full);
    background: var(--accent-primary);
    opacity: 0.5;
    animation: photoViewerWaitPulse 0.95s ease-in-out infinite;
}

@keyframes photoViewerWaitPulse {
    0%,
    100% {
        opacity: 0.3;
        transform: scale(0.88);
    }

    50% {
        opacity: 0.85;
        transform: scale(1);
    }
}

.photo-viewer-load-state--hidden {
    opacity: 0;
    visibility: hidden;
}

.photo-viewer-load-track {
    flex-shrink: 0;
    align-self: center;
    width: min(360px, 78vw);
    margin: 0 var(--spacing-md) var(--spacing-2xl);
    height: var(--spacing-xs);
    background: var(--ui-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.photo-viewer-load-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-primary);
    transition: width 0.12s ease-out;
}

.photo-viewer-load-track--indeterminate .photo-viewer-load-fill {
    width: 32%;
    animation: photoViewerLoadSweep 1s ease-in-out infinite;
}

@keyframes photoViewerLoadSweep {
    0% {
        transform: translateX(-105%);
    }

    100% {
        transform: translateX(320%);
    }
}

.photo-viewer-image {
    max-width: min(100%, calc(100vw * var(--photo-viewer-viewport-w-ratio)), var(--photo-viewer-max-long-edge));
    max-height: min(100%, calc(100vh * var(--photo-viewer-viewport-h-ratio)), var(--photo-viewer-max-long-edge));
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    transition: opacity 0.2s ease;
}

.photo-viewer-image--pending {
    opacity: 0;
}

/* Превью сетки до прихода полного кадра (диск и др.) — без filter, иначе визуальный сдвиг */
.photo-viewer-image--upgrading {
    opacity: 1;
}

/* Кнопка закрытия */
.photo-viewer-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border: none;
    color: white;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.photo-viewer-close:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.1);
}

/* Навигация */
.photo-viewer-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border: none;
    color: white;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.photo-viewer-prev {
    left: var(--spacing-lg);
}

.photo-viewer-next {
    right: var(--spacing-lg);
}

.photo-viewer-nav:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-50%) scale(1.1);
}

/* Счетчик */
.photo-viewer-counter {
    position: absolute;
    top: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    z-index: 10;
}

/* Адаптив */
@media (max-width: 767px) {
    .photo-viewer {
        --photo-viewer-max-long-edge: 960px;
        --photo-viewer-viewport-w-ratio: 0.92;
        --photo-viewer-viewport-h-ratio: 0.54;
    }

    .photo-viewer-container {
        padding: var(--spacing-md);
    }
    
    .photo-viewer-image {
        max-height: min(70vh, var(--photo-viewer-max-long-edge));
        border-radius: var(--radius-md);
    }
    
    .photo-viewer-close {
        width: 40px;
        height: 40px;
        font-size: 20px;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .photo-viewer-nav {
        width: 48px;
        height: 48px;
        font-size: 24px;
    }
    
    .photo-viewer-prev {
        left: var(--spacing-sm);
    }
    
    .photo-viewer-next {
        right: var(--spacing-sm);
    }
    
    .photo-viewer-counter {
        top: var(--spacing-md);
        font-size: var(--font-size-xs);
    }

    .photo-viewer-actions-segment.gc-btn-group > .gc-btn,
    .photo-viewer-actions-segment.gc-btn-group > .gc-dropdown > .gc-dropdown-toggle {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
        max-width: 44px;
        max-height: 44px;
        padding: 0;
        font-size: var(--font-size-lg);
    }
}