/* ========================================
   Unified Lightbox Component
   ======================================== */

/* === Base Overlay === */
.esm-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.esm-lightbox.visible {
    opacity: 1;
    visibility: visible;
}

/* === Dialog Container === */
.esm-lightbox-dialog {
    background: var(--bg-app);
    border: 1px solid var(--border-divider);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5), 0 0 60px rgba(57, 151, 151, 0.15);
    width: 90vw;
    max-width: 1400px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-fast);
}

.esm-lightbox.visible .esm-lightbox-dialog {
    transform: scale(1);
}

/* === Header === */
.esm-lightbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-divider);
    flex-shrink: 0;
}

.esm-lightbox-title {
    font-size: 14px;
    color: var(--text-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}

.esm-lightbox-close {
    background: transparent;
    border: none;
    color: var(--text-medium);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.esm-lightbox-close:hover {
    color: var(--text-high);
    background: rgba(255, 255, 255, 0.1);
}

.esm-lightbox-close svg {
    width: 20px;
    height: 20px;
}

/* === Body (Image Area) === */
.esm-lightbox-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-lg);
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-app) 100%);
    min-height: 0;
    overflow: hidden;
}

.esm-lightbox-image,
.esm-lightbox-canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
    transition: opacity 0.15s ease;
}

.esm-lightbox-image.loading {
    opacity: 0;
}

.esm-lightbox-body.loading::after {
    content: '';
    position: absolute;
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: esm-lightbox-spin 0.7s linear infinite;
}

@keyframes esm-lightbox-spin {
    to { transform: rotate(360deg); }
}

/* === Navigation Arrows === */
.esm-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-high);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.esm-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(57, 151, 151, 0.3);
    transform: translateY(-50%) scale(1.05);
}

.esm-lightbox-nav svg {
    width: 28px;
    height: 28px;
}

.esm-lightbox-nav.prev {
    left: var(--space-lg);
}

.esm-lightbox-nav.next {
    right: var(--space-lg);
}

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

.esm-lightbox-nav:disabled:hover {
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* === Footer / Details Panel === */
.esm-lightbox-footer {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-card);
    border-top: 1px solid var(--border-divider);
    flex-shrink: 0;
    max-height: 200px;
    overflow-y: auto;
}

/* === Position Indicator === */
.esm-lightbox-position {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 13px;
    color: var(--text-medium);
}

/* === Focus States === */
.esm-lightbox-close:focus-visible,
.esm-lightbox-nav:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
    .esm-lightbox,
    .esm-lightbox-dialog,
    .esm-lightbox-close,
    .esm-lightbox-nav {
        transition: none;
    }
}

/* === Mobile: 768px and below === */
@media (max-width: 768px) {
    .esm-lightbox {
        padding: 0;
    }

    .esm-lightbox-dialog {
        width: 100%;
        height: 100vh;
        height: 100dvh;
        max-width: none;
        border-radius: 0;
    }

    .esm-lightbox-close {
        min-width: 44px;
        min-height: 44px;
    }

    .esm-lightbox-nav {
        width: 44px;
        height: 44px;
    }

    .esm-lightbox-nav.prev {
        left: var(--space-sm);
    }

    .esm-lightbox-nav.next {
        right: var(--space-sm);
    }

    .esm-lightbox-footer {
        max-height: 150px;
    }
}

/* === Mobile: 480px and below === */
@media (max-width: 480px) {
    .esm-lightbox-header {
        padding: var(--space-sm) var(--space-md);
    }

    .esm-lightbox-body {
        padding: var(--space-md);
    }

    .esm-lightbox-footer {
        padding: var(--space-sm) var(--space-md);
    }
}

/* ========================================
   Legacy Aliases (for tester migration)
   ======================================== */

/* Tester uses batch-lightbox-* classes - map to esm-lightbox-* */
.batch-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.batch-lightbox.hidden {
    display: none;
}

.batch-lightbox-dialog {
    background: var(--bg-app);
    border: 1px solid var(--border-divider);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5), 0 0 60px rgba(57, 151, 151, 0.15);
    width: 90vw;
    max-width: 1400px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.batch-lightbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-divider);
    flex-shrink: 0;
}

.batch-lightbox-filename {
    font-size: 14px;
    color: var(--text-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.batch-lightbox-close {
    background: transparent;
    border: none;
    color: var(--text-medium);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.batch-lightbox-close:hover {
    color: var(--text-high);
    background: rgba(255, 255, 255, 0.1);
}

.batch-lightbox-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-lg);
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-app) 100%);
    min-height: 0;
    overflow: hidden;
}

.batch-lightbox-image,
.batch-lightbox-canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.batch-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-high);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.batch-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(57, 151, 151, 0.3);
    transform: translateY(-50%) scale(1.05);
}

.batch-lightbox-nav.prev {
    left: var(--space-lg);
}

.batch-lightbox-nav.next {
    right: var(--space-lg);
}

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

.batch-lightbox-nav:disabled:hover {
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.batch-lightbox-details {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-card);
    border-top: 1px solid var(--border-divider);
    flex-shrink: 0;
    max-height: 200px;
    overflow-y: auto;
}

.batch-lightbox-position {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-lg);
    font-size: 13px;
    color: var(--text-medium);
}

/* Legacy mobile styles */
@media (max-width: 768px) {
    .batch-lightbox {
        padding: 0;
    }

    .batch-lightbox-dialog {
        width: 100%;
        height: 100vh;
        height: 100dvh;
        max-width: none;
        border-radius: 0;
    }

    .batch-lightbox-close {
        min-width: 44px;
        min-height: 44px;
    }

    .batch-lightbox-nav {
        width: 44px;
        height: 44px;
    }

    .batch-lightbox-nav.prev {
        left: var(--space-sm);
    }

    .batch-lightbox-nav.next {
        right: var(--space-sm);
    }

    .batch-lightbox-details {
        max-height: 150px;
    }
}

/* ========================================
   Data Page Aliases (data.html migration)
   ======================================== */

.data-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10001;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.data-lightbox.hidden {
    display: none;
}

.data-lightbox-dialog {
    background: var(--bg-app);
    border: 1px solid var(--border-divider);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5), 0 0 60px rgba(57, 151, 151, 0.15);
    width: 90vw;
    max-width: 1200px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.data-lightbox-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-divider);
    flex-shrink: 0;
}

.data-lightbox-filename {
    font-size: 14px;
    color: var(--text-medium);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.data-lightbox-close {
    background: transparent;
    border: none;
    color: var(--text-medium);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.data-lightbox-close:hover {
    color: var(--text-high);
    background: rgba(255, 255, 255, 0.1);
}

.data-lightbox-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: var(--space-lg);
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-app) 100%);
    min-height: 0;
    overflow: hidden;
}

.data-lightbox-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.data-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-high);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.data-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary);
    box-shadow: 0 4px 20px rgba(57, 151, 151, 0.3);
    transform: translateY(-50%) scale(1.05);
}

.data-lightbox-nav.prev {
    left: var(--space-lg);
}

.data-lightbox-nav.next {
    right: var(--space-lg);
}

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

.data-lightbox-nav:disabled:hover {
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.data-lightbox-info {
    display: flex;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-card);
    border-top: 1px solid var(--border-divider);
    flex-shrink: 0;
}

.data-lightbox-position {
    font-size: 13px;
    color: var(--text-medium);
}

/* Data lightbox mobile */
@media (max-width: 768px) {
    .data-lightbox {
        padding: 0;
    }

    .data-lightbox-dialog {
        width: 100%;
        height: 100vh;
        height: 100dvh;
        max-width: none;
        border-radius: 0;
    }

    .data-lightbox-close {
        min-width: 44px;
        min-height: 44px;
    }

    .data-lightbox-nav {
        width: 44px;
        height: 44px;
    }

    .data-lightbox-nav.prev {
        left: var(--space-sm);
    }

    .data-lightbox-nav.next {
        right: var(--space-sm);
    }
}