/**
 * CAISSA Library - Styles
 *
 * Follows the same design language as the Mentor panel.
 */

/* ========================================
   LIBRARY PANEL (Slide-out from left)
   ======================================== */

.library-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 360px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-primary, #0b0f1a);
    border-right: 1px solid var(--border-color, #2a3142);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}

.library-panel.open {
    transform: translateX(0);
}

/* ========================================
   LIBRARY HEADER
   ======================================== */

.library-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid var(--border-color, #2a3142);
    background: var(--bg-secondary, #141926);
}

.library-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary, #fff);
}

.library-title i {
    color: var(--accent-color, #4ecdc4);
}

.library-stats {
    font-size: 12px;
    color: var(--text-secondary, #8b95a5);
    margin-left: 8px;
}

.library-close {
    background: none;
    border: none;
    color: var(--text-secondary, #8b95a5);
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.library-close:hover {
    background: var(--bg-hover, #1f2738);
    color: var(--text-primary, #fff);
}

/* ========================================
   SEARCH & FILTERS
   ======================================== */

.library-search-section {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color, #2a3142);
    background: var(--bg-secondary, #141926);
}

.library-search-input {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-primary, #0b0f1a);
    border: 1px solid var(--border-color, #2a3142);
    border-radius: 6px;
    color: var(--text-primary, #fff);
    font-size: 14px;
    transition: border-color 0.2s;
}

.library-search-input:focus {
    outline: none;
    border-color: var(--accent-color, #4ecdc4);
}

.library-search-input::placeholder {
    color: var(--text-muted, #5a6474);
}

.library-tag-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
    max-height: 60px;
    overflow-y: auto;
}

.library-filter-tag {
    padding: 4px 10px;
    background: var(--bg-primary, #0b0f1a);
    border: 1px solid var(--border-color, #2a3142);
    border-radius: 12px;
    color: var(--text-secondary, #8b95a5);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.library-filter-tag:hover {
    border-color: var(--accent-color, #4ecdc4);
    color: var(--text-primary, #fff);
}

.library-filter-tag.active {
    background: var(--accent-color, #4ecdc4);
    border-color: var(--accent-color, #4ecdc4);
    color: var(--bg-primary, #0b0f1a);
}

.library-no-tags {
    font-size: 12px;
    color: var(--text-muted, #5a6474);
    font-style: italic;
}

/* ========================================
   POSITION LIST
   ======================================== */

.library-position-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.library-position-item {
    background: var(--bg-secondary, #141926);
    border: 1px solid var(--border-color, #2a3142);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.library-position-item:hover {
    border-color: var(--accent-color, #4ecdc4);
    background: var(--bg-hover, #1a2033);
}

.library-position-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.library-position-title {
    font-weight: 500;
    color: var(--text-primary, #fff);
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    margin-right: 8px;
}

.library-position-favorite {
    background: none;
    border: none;
    color: var(--text-muted, #5a6474);
    cursor: pointer;
    padding: 2px 4px;
    font-size: 14px;
    transition: color 0.2s;
}

.library-position-favorite:hover,
.library-position-favorite.active {
    color: #ffd700;
}

.library-position-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    color: var(--text-secondary, #8b95a5);
    margin-bottom: 6px;
}

.library-position-eval {
    font-family: 'JetBrains Mono', monospace;
    padding: 2px 6px;
    background: var(--bg-primary, #0b0f1a);
    border-radius: 4px;
}

.library-position-badge {
    color: var(--accent-color, #4ecdc4);
    font-size: 11px;
}

.library-position-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-bottom: 8px;
}

.library-tag-chip {
    padding: 2px 8px;
    background: var(--bg-primary, #0b0f1a);
    border-radius: 10px;
    font-size: 11px;
    color: var(--text-secondary, #8b95a5);
}

.library-position-actions {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
}

.library-position-actions .btn {
    padding: 6px 10px;
    font-size: 12px;
}

.library-position-actions .btn-danger {
    color: #ff6b6b;
}

.library-position-actions .btn-danger:hover {
    background: rgba(255, 107, 107, 0.1);
}

/* ========================================
   EMPTY STATE
   ======================================== */

.library-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary, #8b95a5);
}

.library-empty-state i {
    font-size: 48px;
    color: var(--text-muted, #5a6474);
    margin-bottom: 16px;
}

.library-empty-state h3 {
    color: var(--text-primary, #fff);
    margin-bottom: 8px;
}

.library-empty-state p {
    font-size: 14px;
    max-width: 250px;
}

/* ========================================
   PAGINATION
   ======================================== */

.library-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px;
    border-top: 1px solid var(--border-color, #2a3142);
    background: var(--bg-secondary, #141926);
}

.library-pagination .btn {
    padding: 6px 12px;
    font-size: 13px;
}

.library-page-info {
    font-size: 13px;
    color: var(--text-secondary, #8b95a5);
}

/* ========================================
   ACTIONS BAR
   ======================================== */

.library-actions-bar {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color, #2a3142);
    background: var(--bg-secondary, #141926);
}

.library-actions-bar .btn {
    flex: 1;
    padding: 8px 12px;
    font-size: 13px;
}

/* Hidden file input for import */
.library-import-input {
    display: none;
}

/* FEN hint message */
.library-fen-hint {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 16px 12px;
    background: var(--bg-secondary, #141926);
    font-size: 11px;
    color: var(--text-muted, #5a6474);
    line-height: 1.4;
}

.library-fen-hint i {
    color: var(--text-muted, #5a6474);
    margin-top: 2px;
    flex-shrink: 0;
}

/* ========================================
   TOGGLE BUTTON (Fixed position, left side)
   ======================================== */

.library-toggle-btn {
    position: fixed;
    left: 16px;
    bottom: 80px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-color, #4ecdc4);
    color: var(--bg-primary, #0b0f1a);
    border: none;
    cursor: pointer;
    display: none; /* Hidden on desktop - use sidebar nav instead */
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.3);
    transition: all 0.2s;
    z-index: 999;
}

.library-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(78, 205, 196, 0.4);
}

.library-toggle-btn.active {
    background: var(--bg-secondary, #141926);
    color: var(--accent-color, #4ecdc4);
    border: 2px solid var(--accent-color, #4ecdc4);
}

/* ========================================
   SAVE TO LIBRARY BUTTON (Analysis toolbar)
   ======================================== */

.save-to-library-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-secondary, #141926);
    border: 1px solid var(--border-color, #2a3142);
    border-radius: 6px;
    color: var(--text-primary, #fff);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.save-to-library-btn:hover {
    border-color: var(--accent-color, #4ecdc4);
    background: var(--bg-hover, #1a2033);
}

.save-to-library-btn i {
    color: var(--accent-color, #4ecdc4);
}

/* Analysis header button group */
.analysis-header-actions {
    display: flex;
    gap: 4px;
}

.analysis-header-actions .save-to-library-btn {
    padding: 5px 10px;
    font-size: 12px;
}

/* Disabled state for Save Game button */
.save-to-library-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.save-to-library-btn:disabled:hover {
    border-color: var(--border-color, #2a3142);
    background: var(--bg-secondary, #141926);
}

.save-to-library-btn:disabled i {
    color: var(--text-muted, #5a6474);
}

/* Active game indicator */
.save-to-library-btn.has-active-game {
    border-color: var(--accent-color, #4ecdc4);
}

.save-to-library-btn.has-active-game::after {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-color, #4ecdc4);
    border-radius: 50%;
    margin-left: 4px;
}

/* ========================================
   LIBRARY TABS (Collections vs Positions)
   ======================================== */

.library-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color, #2a3142);
    background: var(--bg-secondary, #141926);
}

.library-tab {
    flex: 1;
    padding: 10px 16px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary, #8b95a5);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.library-tab:hover {
    color: var(--text-primary, #fff);
    background: var(--bg-hover, #1f2738);
}

.library-tab.active {
    color: var(--accent-color, #4ecdc4);
    border-bottom-color: var(--accent-color, #4ecdc4);
}

/* ========================================
   COLLECTION LIST
   ======================================== */

.library-collection-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.library-collection-item {
    background: var(--bg-secondary, #141926);
    border: 1px solid var(--border-color, #2a3142);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.library-collection-item:hover {
    border-color: var(--accent-color, #4ecdc4);
    background: var(--bg-hover, #1a2033);
}

.library-collection-item.active {
    border-color: var(--accent-color, #4ecdc4);
    background: rgba(78, 205, 196, 0.1);
}

.library-collection-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}

.library-collection-name {
    font-weight: 500;
    color: var(--text-primary, #fff);
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.library-collection-type {
    font-size: 11px;
    padding: 2px 6px;
    background: var(--bg-primary, #0b0f1a);
    border-radius: 4px;
    color: var(--text-secondary, #8b95a5);
    margin-left: 8px;
}

.library-collection-type.game {
    color: var(--accent-color, #4ecdc4);
}

.library-collection-meta {
    font-size: 12px;
    color: var(--text-secondary, #8b95a5);
    display: flex;
    gap: 12px;
}

.library-collection-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    justify-content: flex-end;
}

/* Collection detail view (back button) */
.library-collection-detail-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-secondary, #141926);
    border-bottom: 1px solid var(--border-color, #2a3142);
}

.library-back-btn {
    background: none;
    border: none;
    color: var(--text-secondary, #8b95a5);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.library-back-btn:hover {
    background: var(--bg-hover, #1f2738);
    color: var(--text-primary, #fff);
}

.library-collection-detail-title {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary, #fff);
    font-size: 14px;
}

.library-collection-detail-count {
    font-size: 12px;
    color: var(--text-secondary, #8b95a5);
}

/* ========================================
   ACTIVE GAME INDICATOR
   ======================================== */

.library-collection-item.active-game {
    border-color: var(--accent-color, #4ecdc4);
    background: rgba(78, 205, 196, 0.08);
}

.library-active-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--accent-color, #4ecdc4);
    color: var(--bg-primary, #0b0f1a);
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    margin-left: 6px;
}

.library-active-badge i {
    font-size: 9px;
}

/* Warning button for clear active */
.btn-warning {
    color: #ffc107 !important;
}

.btn-warning:hover {
    background: rgba(255, 193, 7, 0.15) !important;
}

/* ========================================
   MOVE LABELS (Collection Detail View)
   ======================================== */

.library-collection-position .library-position-header {
    gap: 8px;
}

.library-move-label {
    display: inline-block;
    padding: 2px 8px;
    background: var(--accent-color, #4ecdc4);
    color: var(--bg-primary, #0b0f1a);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    white-space: nowrap;
    flex-shrink: 0;
}

.library-last-move {
    font-family: 'JetBrains Mono', monospace;
    padding: 2px 6px;
    background: var(--bg-primary, #0b0f1a);
    border-radius: 4px;
    font-weight: 500;
}

/* ========================================
   ERROR STATE
   ======================================== */

.library-error {
    padding: 20px;
    text-align: center;
    color: #ff6b6b;
    font-size: 14px;
}

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

@media (max-width: 768px) {
    .library-panel {
        width: 100%;
        max-width: 100%;
    }

    /* Hide Library FAB on mobile - access via drawer menu only */
    .library-toggle-btn {
        display: none !important;
    }

    .library-position-actions {
        flex-wrap: wrap;
    }
}

/* ========================================
   SCROLLBAR (matches app style)
   ======================================== */

.library-position-list::-webkit-scrollbar {
    width: 6px;
}

.library-position-list::-webkit-scrollbar-track {
    background: var(--bg-primary, #0b0f1a);
}

.library-position-list::-webkit-scrollbar-thumb {
    background: var(--border-color, #2a3142);
    border-radius: 3px;
}

.library-position-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted, #5a6474);
}