/* ============================================================================
   DOCUMENT SIDEBAR COMPONENT
   ============================================================================

   Tabbed sidebar with Table of Contents and Search functionality.
   Fixed tabs at top with scrollable content below.

   ============================================================================ */

/* ============================================================================
   MAIN SIDEBAR CONTAINER
   ============================================================================ */

.document-sidebar {
    position: fixed;
    inset-inline-start: 0;
    top: 100px;  /* Below fixed header */
    bottom: 70px;  /* Above fixed footer */
    width: var(--sidebar-width);
    background: var(--color-white);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    box-shadow: var(--shadow-sidebar);
    z-index: var(--z-sidebar);
    transition: width 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0;  /* No padding on container */
    margin: 0;
}

/* ============================================================================
   COLLAPSED STATE
   ============================================================================ */

.document-sidebar.collapsed {
    width: var(--sidebar-collapsed);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Adjust main content when sidebar is collapsed */
.document-viewer:has(.document-sidebar.collapsed) .viewer-main {
    margin-inline-start: 60px;
}

/* ============================================================================
   EXPAND BUTTON (When Collapsed)
   ============================================================================ */

.sidebar-expand-button {
    width: 100%;
    height: 100px;
    background: var(--color-primary);
    border: none;
    color: var(--color-white);
    font-size: 1.125rem;
    cursor: pointer;
    border-radius: 0;
    transition: var(--transition-bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-expand-button:hover {
    background: var(--color-primary-dark);
}

/* ============================================================================
   SIDEBAR TABS (Fixed at top)
   ============================================================================ */

.sidebar-tabs {
    display: flex;
    align-items: stretch;
    gap: 0;
    background: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
    flex-shrink: 0;
    padding: 0;
    margin: 0;
}

.sidebar-tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    color: #6c757d;
    transition: all 0.2s ease;
    margin-bottom: -2px;
    text-align: center;
}

.sidebar-tab:first-child {
    border-radius: var(--radius-lg) 0 0 0;
}

.sidebar-tab:hover {
    color: #495057;
    background: rgba(0, 0, 0, 0.03);
}

.sidebar-tab.active {
    color: var(--color-primary);
    background: var(--color-white);
    border-bottom-color: var(--color-primary);
    font-weight: 600;
}

.sidebar-collapse-btn {
    padding: 8px 12px;
    background: transparent;
    border: none;
    border-inline-end: 1px solid #e9ecef;
    cursor: pointer;
    color: #6c757d;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-collapse-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #495057;
}

/* ============================================================================
   SIDEBAR CONTENT (Scrollable)
   ============================================================================ */

.sidebar-content {
    flex: 1;
    overflow: hidden;
    min-height: 0;
    padding: 0;
    margin: 0;
}

.sidebar-tab-content {
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px 16px;
}

.sidebar-tab-content.toc-tab {
    padding: 8px 12px;
}

/* ============================================================================
   TOC CONTENT STYLES
   ============================================================================ */

.document-sidebar .toc-loading,
.document-sidebar .toc-error,
.document-sidebar .toc-empty {
    padding: 24px 16px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    direction: rtl;
}

.document-sidebar .toc-error {
    color: var(--color-error);
}

.document-sidebar .toc-content {
    direction: rtl;
}

/* ============================================================================
   DOCUMENT SEARCH COMPONENT
   ============================================================================ */

.document-search {
    display: flex;
    flex-direction: column;
    height: 100%;
    direction: rtl;
}

/* Search Input Area */
.doc-search-input-area {
    padding-bottom: 12px;
    border-bottom: 1px solid #e9ecef;
    margin-bottom: 12px;
    flex-shrink: 0;
}

.doc-search-mode-toggle {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.doc-mode-btn {
    flex: 1;
    padding: 8px 14px;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    color: #6c757d;
    transition: all 0.2s ease;
}

.doc-mode-btn:hover:not(:disabled) {
    background: #e9ecef;
    border-color: #ced4da;
}

.doc-mode-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

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

/* Search Row (Input + Button) */
.doc-search-row {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.doc-search-input {
    flex: 1;
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.doc-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.15);
}

.doc-search-input:disabled {
    background: #f8f9fa;
    cursor: not-allowed;
}

.doc-search-btn {
    flex-shrink: 0;
    padding: 10px 18px;
    background: var(--color-primary);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
    white-space: nowrap;
}

.doc-search-btn:hover:not(:disabled) {
    background: var(--color-primary-dark);
}

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

.doc-search-btn.loading {
    background: #adb5bd;
}

/* Options Row (root expansion + clear button) */
.doc-search-options-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 8px;
}

/* Root Expansion Option */
.doc-search-option {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    color: #6c757d;
    cursor: pointer;
}

.doc-search-option input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
}

.doc-search-option:hover {
    color: #495057;
}

/* Morphology options group (inflection + roots) — stacked so both fit the
   narrow sidebar without crowding the clear button. */
.doc-search-morph-options {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Clear Results Button */
.doc-search-clear-btn {
    padding: 4px 10px;
    background: transparent;
    border: 1px solid #dc3545;
    border-radius: 4px;
    color: #dc3545;
    font-family: var(--font-primary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.doc-search-clear-btn:hover:not(:disabled) {
    background: #dc3545;
    color: #fff;
}

.doc-search-clear-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================================================
   SORT TOGGLE
   ============================================================================ */

.doc-search-sort-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #e9ecef;
    flex-wrap: wrap;
}

.sort-label {
    font-size: 0.8125rem;
    color: #6c757d;
    flex-shrink: 0;
}

.doc-sort-buttons {
    display: flex;
    gap: 4px;
}

.doc-sort-btn {
    padding: 5px 10px;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: 500;
    color: #6c757d;
    transition: all 0.2s ease;
}

.doc-sort-btn:hover:not(:disabled) {
    background: #e9ecef;
    border-color: #ced4da;
}

.doc-sort-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

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

.sort-loading-indicator {
    font-size: 0.6875rem;
    color: #adb5bd;
    font-style: italic;
}

/* ============================================================================
   SEARCH RESULTS
   ============================================================================ */

.doc-search-results {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
}

.doc-search-loading,
.doc-search-error,
.doc-search-empty {
    padding: 24px 16px;
    text-align: center;
    color: #6c757d;
    font-size: 0.875rem;
}

.doc-search-error {
    color: #dc3545;
}

.doc-search-count {
    padding: 8px 16px;
    font-size: 0.75rem;
    color: #6c757d;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.doc-search-result-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-search-result-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 16px;
    border-bottom: 1px solid #f1f3f4;
    cursor: pointer;
    transition: background 0.15s ease;
    overflow: hidden;
}

.doc-search-result-item:hover {
    background: #f8f9fa;
}

.doc-search-result-item.current-page {
    background: rgba(139, 69, 19, 0.06);
    border-inline-start: 3px solid var(--color-primary);
}

.doc-search-result-item.current-page:hover {
    background: rgba(139, 69, 19, 0.12);
}

.doc-search-result-item.selected {
    background: rgba(184, 134, 11, 0.08);
    border-inline-start: 3px solid var(--color-goldenrod);
}

.doc-search-result-item.selected:hover {
    background: rgba(184, 134, 11, 0.15);
}

.doc-search-result-item.selected.current-page {
    background: rgba(184, 134, 11, 0.12);
    border-inline-start: 3px solid var(--color-goldenrod);
}

.doc-result-header {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
}

.doc-result-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 4px;
    background: #e9ecef;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
    color: #6c757d;
}

.doc-search-result-item.current-page .doc-result-num {
    background: var(--color-primary);
    color: #fff;
}

.doc-result-page {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.doc-result-snippet {
    font-size: 0.8125rem;
    color: #6c757d;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-break: break-word;
}

/* Highlighted search terms in results */
.doc-result-snippet b,
.doc-result-snippet strong {
    color: #2c3e50;
    font-weight: 700;
    background-color: rgba(139, 69, 19, 0.15);
    padding: 0 2px;
    border-radius: 2px;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .document-sidebar {
        width: 100%;
        max-height: 350px;
        position: relative;
        top: auto;
        bottom: auto;
        border-radius: var(--radius-lg);
        margin-bottom: 20px;
    }

    .document-sidebar.collapsed {
        max-height: 50px;
        width: 100%;
    }

    .sidebar-tabs {
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .sidebar-tab {
        padding: 10px 12px;
        font-size: 0.875rem;
    }

    .viewer-main {
        margin-inline-start: 0 !important;
    }
}

/* ============================================================================
   PRINT
   ============================================================================ */

@media print {
    .document-sidebar {
        display: none;
    }
}