/* File Detail Modal Component */

.detail-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-normal) var(--ease-out),
                visibility var(--duration-normal) var(--ease-out);
}

.detail-modal-overlay.is-open {
    opacity: 1;
    visibility: visible;
}

.detail-modal {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    width: 100%;
    max-width: 1400px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--duration-normal) var(--ease-out);
}

.detail-modal-overlay.is-open .detail-modal {
    transform: scale(1);
}

/* Full-screen mode */
.detail-modal-overlay.is-fullscreen {
    padding: 0;
}

.detail-modal-overlay.is-fullscreen .detail-modal {
    max-width: 100%;
    max-height: 100%;
    height: 100%;
    border-radius: 0;
}

/* Modal Header */
.detail-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-5);
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
    flex-shrink: 0;
}

.detail-modal__title {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--gray-900);
    font-family: var(--font-mono);
    margin: 0;
}

.detail-modal__divider {
    width: 1px;
    height: 20px;
    background: var(--gray-300);
    margin: 0 var(--space-1);
}

.detail-modal__actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.detail-modal__actions .btn {
    padding: var(--space-2);
    min-width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-modal__actions .btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Modal Body - Two Column Layout */
.detail-modal__body {
    display: grid;
    grid-template-columns: 1fr 420px;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

@media (max-width: 1023px) {
    .detail-modal__body {
        grid-template-columns: 1fr;
        grid-template-rows: 50vh 1fr;
    }
}

/* PDF Viewer Pane */
.detail-modal__viewer {
    background: var(--gray-800);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

.detail-modal__viewer iframe {
    width: 100%;
    height: 100%;
    border: none;
    flex: 1;
}

.detail-modal__viewer-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: white;
    text-align: center;
    padding: var(--space-8);
}

.detail-modal__viewer-fallback a {
    color: var(--blue-100);
    text-decoration: underline;
}

.detail-modal__viewer-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    background: var(--warning);
    color: white;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
}

/* Sidebar */
.detail-modal__sidebar {
    border-left: 1px solid var(--gray-200);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    background: white;
}

@media (max-width: 1023px) {
    .detail-modal__sidebar {
        border-left: none;
        border-top: 1px solid var(--gray-200);
    }
}

/* Sidebar Sections */
.detail-section {
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-4);
}

.detail-section:last-child {
    border-bottom: none;
}

.detail-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.detail-section__title {
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin: 0;
}

/* Metadata Grid */
.metadata-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
}

.metadata-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.metadata-item__label {
    font-size: var(--text-xs);
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.metadata-item__value {
    font-size: var(--text-sm);
    color: var(--gray-800);
    font-weight: var(--font-medium);
}

.detail-description {
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--gray-100);
}

/* Tags */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: var(--blue-100);
    color: var(--blue-700);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
}

.tag--person { background: var(--blue-100); color: var(--blue-700); }
.tag--organization { background: var(--warning-light); color: var(--warning-dark); }
.tag--topic { background: var(--success-light); color: var(--success-dark); }
.tag--location { background: #F3E8FF; color: #7C3AED; }
.tag--redacted { background: var(--gray-800); color: white; }

.tag__remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: 50%;
    color: inherit;
    opacity: 0.7;
    font-size: var(--text-sm);
    line-height: 1;
    padding: 0;
}

.tag__remove:hover {
    background: rgba(0, 0, 0, 0.1);
    opacity: 1;
}

/* Tag Input */
.tag-input-container {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
    flex-wrap: wrap;
}

.tag-input {
    flex: 1;
    min-width: 120px;
    padding: var(--space-2);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
}

.tag-input:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px var(--blue-100);
}

/* Notes */
.note-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.note-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-3);
}

.note-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.note-card__type {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--gray-500);
    background: var(--gray-200);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.note-card__content {
    font-size: var(--text-sm);
    color: var(--gray-700);
    white-space: pre-wrap;
    line-height: var(--leading-relaxed);
    margin: 0;
}

.note-card__page {
    font-size: var(--text-xs);
    color: var(--gray-400);
    margin-top: var(--space-2);
    display: block;
}

/* Add Note Form */
.add-form {
    margin-top: var(--space-3);
    padding: var(--space-3);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

.add-form textarea {
    width: 100%;
    padding: var(--space-2);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    resize: vertical;
    min-height: 80px;
}

.add-form textarea:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px var(--blue-100);
}

.add-form__actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

/* Version Links */
.version-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.version-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--success-light);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--success-dark);
    font-size: var(--text-sm);
    transition: background var(--duration-fast) var(--ease-out);
}

.version-link:hover {
    background: #A7F3D0;
}

.version-link__badge {
    font-size: var(--text-xs);
    padding: 2px 6px;
    background: white;
    border-radius: var(--radius-sm);
    font-weight: var(--font-medium);
    text-transform: capitalize;
}

.version-link__url {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Flags */
.flag-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.flag-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--warning-light);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--warning-dark);
}

.flag-item--irrelevant_image {
    background: var(--danger-light);
    color: var(--danger-dark);
}

.flag-item--duplicate {
    background: var(--info-light);
    color: var(--info-dark);
}

.flag-item__label {
    font-weight: var(--font-medium);
}

.flag-item__reason {
    flex: 1;
    opacity: 0.8;
}

/* Empty States */
.empty-text {
    font-size: var(--text-sm);
    color: var(--gray-400);
    font-style: italic;
}

/* Loading State */
.detail-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--gray-500);
    gap: var(--space-4);
}

.detail-loading .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--blue-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Quick Actions Bar */
.detail-quick-actions {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
}

.detail-quick-actions a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--gray-700);
    text-decoration: none;
    transition: all var(--duration-fast) var(--ease-out);
}

.detail-quick-actions a:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

/* Select Styling */
.detail-select {
    padding: var(--space-2);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    background: white;
    cursor: pointer;
}

.detail-select:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 3px var(--blue-100);
}

/* ========================
   MOBILE STYLES (< 640px)
   ======================== */
@media (max-width: 639px) {
    /* Full-screen modal on mobile */
    .detail-modal-overlay {
        padding: 0;
    }

    .detail-modal {
        border-radius: 0;
        max-height: 100vh;
        max-width: 100%;
        height: 100%;
    }

    .detail-modal-overlay.is-open .detail-modal {
        transform: none;
    }

    /* Mobile-optimized header */
    .detail-modal__header {
        padding: var(--space-2) var(--space-3);
        gap: var(--space-2);
    }

    .detail-modal__title {
        font-size: var(--text-base);
        flex: 1;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .detail-modal__actions {
        gap: 0;
    }

    .detail-modal__actions .btn {
        min-width: 44px;
        min-height: 44px;
        padding: var(--space-2);
    }

    .detail-modal__divider {
        display: none;
    }

    /* Stack viewer/sidebar vertically with better ratio */
    .detail-modal__body {
        grid-template-columns: 1fr;
        grid-template-rows: 45vh 1fr;
    }

    /* Sidebar optimizations */
    .detail-modal__sidebar {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .detail-section {
        padding: var(--space-3);
    }

    /* Metadata grid single column */
    .metadata-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2);
    }

    /* Tag input stacked */
    .tag-input-container {
        flex-direction: column;
    }

    .tag-input,
    .detail-select {
        width: 100%;
        min-height: 44px;
        font-size: 16px; /* Prevents iOS zoom */
    }

    .tag-input-container .btn {
        width: 100%;
        min-height: 44px;
    }

    /* Add form buttons */
    .add-form__actions {
        flex-direction: column;
    }

    .add-form__actions .btn {
        width: 100%;
        min-height: 44px;
    }

    .add-form textarea {
        font-size: 16px; /* Prevents iOS zoom */
        min-height: 100px;
    }

    /* Quick actions wrap */
    .detail-quick-actions {
        flex-wrap: wrap;
        padding: var(--space-2);
    }

    .detail-quick-actions a {
        flex: 1 1 auto;
        min-height: 44px;
        justify-content: center;
        text-align: center;
    }

    /* Version links */
    .version-link {
        flex-wrap: wrap;
    }

    .version-link__url {
        flex-basis: 100%;
        order: 2;
        margin-top: var(--space-1);
    }

    /* Tags larger touch targets */
    .tag {
        padding: var(--space-2) var(--space-3);
        min-height: 32px;
    }

    .tag__remove {
        width: 24px;
        height: 24px;
        min-width: 24px;
    }
}

/* Landscape optimization for small screens */
@media (max-width: 896px) and (orientation: landscape) {
    .detail-modal__body {
        grid-template-columns: 1.5fr 1fr;
        grid-template-rows: 1fr;
    }

    .detail-modal__sidebar {
        border-left: 1px solid var(--gray-200);
        border-top: none;
    }
}