/* SPA Layout Management */

/* Main Content Container */
.main-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* SPA Container - Full Screen and Exclusive */
.spa-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 50;  /* Lower than tab navigation */
    overflow: hidden;
}

/* When SPA is active, ensure proper layout */
.main-content.spa-active {
    position: relative;
    visibility: visible !important;
    display: block !important;
}

.main-content.spa-active .spa-container {
    display: block !important;
}

/* Tab navigation should always be visible in SPA mode */
.main-content.spa-active #tab-navigation {
    display: block !important;
    visibility: visible !important;
}

/* Page containers within SPA */
.spa-container .page-container {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    background: var(--bg-primary);
}

/* Ensure SPA pages have proper layout */
.page-container {
    display: flex;
    flex-direction: column;
}

/* Override any existing page-container styles that might interfere */
.spa-container .page-container.page-image-detail {
    position: relative;
    z-index: auto;
    background: var(--bg-primary);
}

/* Image detail page specific styles */
/* === Header Structure Unified ===
 * Header styles (.image-detail-header, .album-gallery-header, etc.)
 * are now consolidated in header-navigation-unified.css
 * This eliminates multiple conflicting definitions
 * ==================================== */

.image-detail-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.image-viewer {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.image-container {
    max-width: 100%;
    max-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-large);
    transition: transform var(--transition-medium);
}

.detail-image.zoomed {
    transform: scale(2);
    cursor: grab;
}

.detail-image.zoomed:active {
    cursor: grabbing;
}

.image-sidebar {
    width: 320px;
    min-width: 320px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-default);
    padding: 0;
    overflow-y: auto;
    flex-shrink: 0;
}

.image-info h2 {
    display: none; /* 重複表示を除去 */
}

.image-metadata {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.metadata-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metadata-label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.metadata-value {
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: var(--font-mono);
}

.image-notes,
.image-tags {
    margin-bottom: 1rem;
}

.image-notes h3,
.image-tags h3 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: var(--font-size-lg);
}

.note-content,
.tags-container {
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    min-height: 60px;
}

.no-note,
.no-tags {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
    font-size: var(--font-size-sm);
}

.edit-note-btn,
.edit-tags-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: var(--font-size-sm);
}

.edit-note-btn:hover,
.edit-tags-btn:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
}

/* Header navigation buttons */
.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-btn,
.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: var(--font-size-sm);
}

.nav-btn:hover,
.action-btn:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--color-primary);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-btn:disabled:hover {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-color: var(--border-default);
}

.image-navigation {
    display: flex;
    align-items: center;
    margin-left: 1rem;
}

.image-counter {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Loading state */
.image-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-default);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.image-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--color-danger);
}

.image-error .material-symbols-outlined {
    font-size: 3rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .image-detail-content {
        flex-direction: column;
    }
    
    .image-sidebar {
        width: 100%;
        min-width: 0;
        border-left: none;
        border-top: 1px solid var(--border-default);
        max-height: 40vh;
    }
    
    .image-detail-header {
        padding: 0.75rem 1rem;
    }
    
    .header-left,
    .header-right {
        gap: 0.5rem;
    }
    
    .nav-btn,
    .action-btn {
        padding: 0.375rem 0.75rem;
        font-size: var(--font-size-xs);
    }
}