/**
 * Innomis Horizontal Filters
 *
 * Horizontal filter bar layout for the search explorer.
 * Replaces the vertical sidebar accordion layout.
 *
 * @package Innomis\PostShortcode
 * @since 1.0.0
 */

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */
:root {
    /* Base colors and layout */
    --filter-box-header-bg: #45598f;
    --filter-box-header-color: #ffffff;
    --filter-box-content-bg: #ffffff;
    --filter-box-border-color: #ddd;
    --filter-box-min-width: 120px;
    --filter-box-max-height: 135px;
    /* Checkbox size scales with filter item font size (1.2x multiplier matches text line-height) */
    --filter-checkbox-size: calc(var(--explorer-filter-item-font-size) * 1rem * 1.2 * var(--font-scale-post, 1));
    --filter-padding: 8px 8px 0 8px;
    --filter-gap: 4px;

    /* Explorer font settings (can be overridden by admin settings) */
    --explorer-filter-header-font-size: 1.1;
    --explorer-filter-header-font-weight: 600;
    --explorer-filter-count-font-size: 0.85;
    --explorer-filter-item-font-size: 0.9;
    --explorer-filter-item-font-weight: 400;
    --explorer-filter-search-font-size: 0.7;
    --explorer-search-input-font-size: 0.85;
    --explorer-search-input-font-weight: 400;
    --explorer-button-font-size: 0.8;
    --explorer-button-font-weight: 500;
    --explorer-results-number-font-size: 1.1;
    --explorer-results-number-font-weight: 600;
    --explorer-results-label-font-size: 0.75;
    --explorer-results-label-font-weight: 300;

    /* Computed font sizes - REMOVED from CSS file, now injected via inline styles */
    /* This ensures proper override order: CSS file loads first, then inline CSS overrides */
    /* --filter-header-font-size: set via inline CSS */
    /* --filter-count-font-size: set via inline CSS */
    /* --filter-font-size: set via inline CSS */
    /* --filter-search-font-size: set via inline CSS */
    --filter-small-font-size: calc(0.85rem * var(--font-scale-post, 1));
}

/* ==========================================================================
   Horizontal Filter Bar Container
   ========================================================================== */
.innomis-horizontal-filters {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-bottom: 1rem;
    border: none;
    background: transparent;
    overflow: visible;
}

/* ==========================================================================
   Individual Filter Box - Fixed height with scrollable content
   ========================================================================== */
.innomis-filter-box {
    flex: 1 1 0;
    min-width: var(--filter-box-min-width);
    height: 180px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--filter-box-border-color);
    border-radius: 2px;
    background: var(--filter-box-content-bg);
    overflow: hidden;
    box-sizing: border-box;
}

/* ==========================================================================
   Filter Box Header - Flexbox row: title and search inline
   Left padding (16px) aligns with items: 8px content padding + 8px item padding
   ========================================================================== */
.innomis-filter-box-header {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--filter-box-header-bg);
    color: var(--filter-header-color);
    padding: 10px 10px 10px 16px;
    font-size: var(--filter-header-font-size);
    font-weight: var(--explorer-filter-header-font-weight);
    line-height: 1.3;
    flex-shrink: 0;
    box-sizing: border-box;
}

/* Title in header */
.innomis-filter-box-header-title {
    flex: 0 1 auto;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

/* Entry count in header */
.innomis-filter-box-header .innomis-filter-box-count {
    font-weight: var(--filter-count-font-weight);
    color: var(--filter-count-color);
    opacity: 0.8;
    font-size: var(--filter-count-font-size);
    margin-left: 4px;
}

/* ==========================================================================
   Filter Box Content (Checkboxes) - Scrollable area fills remaining space
   ========================================================================== */
.innomis-filter-box-content {
    display: block;
    flex: 1 1 auto;
    padding: 8px;
    overflow-y: auto;
    overflow-x: hidden;
    box-sizing: border-box;
}

/* Scrollbar Styling for Content */
.innomis-filter-box-content::-webkit-scrollbar {
    width: 6px;
}

.innomis-filter-box-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.innomis-filter-box-content::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.innomis-filter-box-content::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* Filter Box Items Container - scrollable list of checkboxes */
.innomis-filter-box-items {
    display: block;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
}

/* Scrollbar Styling for Items */
.innomis-filter-box-items::-webkit-scrollbar {
    width: 6px;
}

.innomis-filter-box-items::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.innomis-filter-box-items::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.innomis-filter-box-items::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* ==========================================================================
   Checkbox Items
   ========================================================================== */
.innomis-filter-box-item {
    display: flex;
    align-items: center; /* Robust center alignment - works at all zoom levels */
    gap: 10px; /* Clear whitespace between checkbox and label */
    padding: 6px 0 6px 8px; /* Vertical breathing room + left indent */
    cursor: pointer;
}

.innomis-filter-box-item:first-child {
    padding-top: 0;
}

.innomis-filter-box-item:last-child {
    padding-bottom: 0;
}

/* Checkbox Input - stable dimensions, no animations, GPU-rendered */
.innomis-filter-box-checkbox {
    width: var(--filter-checkbox-size);
    height: var(--filter-checkbox-size);
    min-width: var(--filter-checkbox-size);
    min-height: var(--filter-checkbox-size);
    margin: 0;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--filter-box-header-bg);
    /* Prevent any browser-default animations */
    transition: none;
    /* Fix rendering artifacts on hover/scroll */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    /* Ensure consistent appearance */
    -webkit-appearance: checkbox;
    -moz-appearance: checkbox;
    appearance: checkbox;
    outline: none;
    box-sizing: border-box;
}

/* Checkbox Label */
.innomis-filter-box-label {
    font-size: var(--filter-font-size);
    font-weight: var(--explorer-filter-item-font-weight);
    line-height: 1.2;
    color: var(--filter-item-color);
    cursor: pointer;
    word-break: break-word;
    flex: 1;
    margin: 0;
    padding: 0;
}

/* Disabled/Locked State */
.innomis-filter-box-item.is-locked {
    opacity: 0.6;
}

.innomis-filter-box-item.is-locked .innomis-filter-box-checkbox {
    cursor: not-allowed;
}

.innomis-filter-box-item.is-locked .innomis-filter-box-label {
    cursor: not-allowed;
}

/* Hidden items (filtered out by search) */
.innomis-filter-box-item.hidden {
    display: none;
}

/* Separator before search field */
.innomis-filter-box-separator {
    opacity: 0.5;
    margin: 0 2px;
    font-weight: 300;
}

/* ==========================================================================
   Responsive Search Field - width scales with box width
   ========================================================================== */
.innomis-filter-box-search {
    flex: 0 1 auto !important;
    width: clamp(45px, 25%, 90px) !important;
    max-width: 90px !important;
    height: auto !important;
    padding: 3px 5px !important;
    border: 1px solid rgba(255,255,255,0.4) !important;
    border-radius: 2px !important;
    font-size: var(--filter-search-font-size) !important;
    line-height: 1.4 !important;
    outline: none;
    box-sizing: border-box !important;
    background: rgba(255,255,255,0.9) !important;
    color: var(--filter-search-color) !important;
    transition: width 0.2s ease;
}

.innomis-filter-box-search:focus {
    width: clamp(60px, 35%, 120px) !important;
    max-width: 120px !important;
    border-color: rgba(255,255,255,0.7) !important;
    background: #fff !important;
}

.innomis-filter-box-search::placeholder {
    color: #666;
    font-size: calc(0.65rem * var(--font-scale-post, 1));
}

/* No results message */
.innomis-filter-box-no-results {
    display: none;
    padding: 8px 0;
    text-align: center;
    color: #666;
    font-size: var(--filter-small-font-size);
    font-style: italic;
}

.innomis-filter-box-no-results.show {
    display: block;
}

/* ==========================================================================
   Minimal Search Bar - Single row: search input + reset button
   ========================================================================== */
.innomis-minimal-search-bar {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: 4px;
    margin-bottom: 8px;
    padding: 0;
}

.innomis-minimal-search-bar .innomis-search-input {
    flex: 0 0 auto;
    width: 200px;
    padding: 4px 10px;
    border: 1px solid #d1d5db;
    border-radius: 3px;
    font-size: calc(var(--explorer-search-input-font-size) * 1rem * var(--font-scale-post, 1));
    color: #333;
    outline: none;
    box-sizing: border-box;
    background: #fff;
}

.innomis-minimal-search-bar .innomis-search-input:focus {
    border-color: #45598f;
    box-shadow: 0 0 0 2px rgba(69, 89, 143, 0.1);
}

.innomis-minimal-search-bar .innomis-search-input::placeholder {
    color: #4b5563 !important;
}

/* Cross-browser placeholder compatibility */
.innomis-minimal-search-bar .innomis-search-input::-webkit-input-placeholder {
    color: #4b5563 !important;
}

.innomis-minimal-search-bar .innomis-search-input::-moz-placeholder {
    color: #4b5563 !important;
    opacity: 1 !important;
}

.innomis-minimal-search-bar .innomis-search-input:-ms-input-placeholder {
    color: #4b5563 !important;
}

.innomis-minimal-search-bar .innomis-reset-btn {
    padding: 4px 12px;
    border: 1px solid #d1d5db;
    border-radius: 3px;
    background: #e4e7eb;
    color: #6b7280;
    font-size: calc(0.8rem * var(--font-scale-post, 1));
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s ease, border-color 0.15s ease;
    box-sizing: border-box;
}

.innomis-minimal-search-bar .innomis-reset-btn:hover {
    background: #d6d9e0;
    border-color: #9ca3af;
}

/* ==========================================================================
   Results Count - Positioned between filter boxes and search results
   ========================================================================== */
.innomis-horizontal-filters .innomis-results-count {
    display: flex;
    align-items: baseline;
    gap: 0.4em;
    margin-top: 12px;
    padding: 0 0 0 10px; /* Left padding aligns with search result text */
}

.innomis-horizontal-filters .innomis-results-count .innomis-results-number {
    font-size: calc(var(--explorer-results-number-font-size) * 1rem * var(--font-scale-post, 1));
    font-weight: var(--explorer-results-number-font-weight, 600);
    color: #333;
}

.innomis-horizontal-filters .innomis-results-count .innomis-results-label {
    font-size: calc(var(--explorer-results-label-font-size) * 1rem * var(--font-scale-post, 1));
    color: #6b7280;
}

/* Filter Boxes Row - wrapper for filter boxes */
.innomis-filter-boxes-row {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: var(--filter-gap);
    width: 100%;
}

/* ==========================================================================
   Search Box (DEPRECATED) - keeping for backwards compatibility
   ========================================================================== */
.innomis-search-box {
    /* Inherits flex: 1 1 0 and height: 180px from .innomis-filter-box */
}

.innomis-search-box .innomis-filter-box-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: calc(180px - 38px); /* Box height minus header height */
    padding: 10px;
    overflow: hidden;
    box-sizing: border-box;
}

/* Search Input in Search Box - compact height */
.innomis-search-box-input {
    width: 100% !important;
    height: auto !important;
    padding: 6px 10px !important;
    border: 1px solid #ddd !important;
    border-radius: 2px !important;
    font-size: calc(var(--explorer-search-input-font-size) * 1rem * var(--font-scale-post, 1)) !important;
    font-weight: var(--explorer-search-input-font-weight) !important;
    line-height: 1.4 !important;
    outline: none;
    box-sizing: border-box !important;
    background: #fff !important;
    color: var(--search-input-color) !important;
    transition: border-color 0.2s;
    flex-shrink: 0;
}

.innomis-search-box-input:focus {
    border-color: var(--filter-box-header-bg);
}

.innomis-search-box-input::placeholder {
    color: #999;
}

/* Action Button in Search Box - single centered button */
.innomis-search-box-actions {
    display: flex;
    justify-content: center;
    flex-shrink: 0;
}

.innomis-search-box-btn.innomis-search-box-btn.innomis-search-box-btn {
    padding: 8px 48px;
    min-width: 140px;
    border: 1px solid #d1d5db;
    border-radius: 2px;
    background: #fff;
    color: var(--button-color) !important;
    font-size: calc(var(--explorer-button-font-size) * 1rem * var(--font-scale-post, 1));
    font-weight: var(--explorer-button-font-weight);
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    white-space: nowrap;
}

.innomis-search-box-btn:hover {
    background: #f9fafb;
    border-color: #9ca3af;
    text-decoration: none;
    /* color bleibt var(--button-color) - backend-gesteuert */
}

/* ==========================================================================
   Results Count Display - centered in middle area, fills available space
   ========================================================================== */
.innomis-filter-results-count {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0;
    margin: 0;
    flex: 1 1 auto;
    line-height: 1.1;
}

/* Result number - moderate size */
.innomis-results-number {
    font-size: calc(var(--explorer-results-number-font-size) * 1rem * var(--font-scale-post, 1));
    font-weight: var(--explorer-results-number-font-weight);
    color: var(--results-number-color);
    line-height: 1.2;
}

/* Label below - subtle/dezent */
.innomis-results-label {
    font-size: calc(var(--explorer-results-label-font-size) * 1rem * var(--font-scale-post, 1));
    font-weight: var(--explorer-results-label-font-weight);
    color: var(--results-label-color);
    line-height: 1.2;
}

/* Legacy support for old markup */
.innomis-filter-results-count strong {
    color: #333;
    font-weight: 700;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Large tablets and small desktops - 2 rows */
@media (max-width: 1200px) {
    .innomis-horizontal-filters {
        flex-wrap: wrap;
    }

    .innomis-filter-box {
        flex: 1 1 calc(33.333% - var(--filter-gap));
        min-width: 150px;
    }

    .innomis-search-box {
        max-width: none;
    }
}

/* Tablets - 2-3 boxes per row */
@media (max-width: 900px) {
    .innomis-filter-box {
        flex: 1 1 calc(50% - var(--filter-gap));
    }
}

/* Mobile - stacked layout */
@media (max-width: 600px) {
    .innomis-horizontal-filters {
        flex-direction: column;
    }

    .innomis-filter-box {
        flex: 1 1 100%;
        height: 160px;
    }

    .innomis-search-box {
        max-width: none;
    }
}

/* ==========================================================================
   K-Tree Embedded Context Adjustments

   K-Tree sidebar takes ~20% of viewport, leaving ~80% for content.
   Breakpoints are set earlier to account for this reduced content width:
   - 1400px viewport → ~1120px content → wrap to 3 per row
   - 1100px viewport → ~880px content → 2 per row
   - 850px viewport → ~680px content → stacked layout
   ========================================================================== */
.innomis-search-ktree-compact .innomis-horizontal-filters {
    margin-bottom: 16px;
}

/* K-Tree context: fixed height boxes */
.innomis-search-ktree-compact .innomis-filter-box {
    height: 180px;
}

/* Slightly smaller in K-Tree context due to limited space */
.innomis-search-ktree-compact .innomis-filter-box-header {
    padding: 6px 10px;
    font-size: calc(1rem * var(--font-scale-post, 1));
}

.innomis-search-ktree-compact .innomis-filter-box-content {
    padding: 8px;
    overflow-y: auto;
    overflow-x: hidden;
}

.innomis-search-ktree-compact .innomis-filter-box-label {
    font-size: calc(0.85rem * var(--font-scale-post, 1));
}

/* K-Tree responsive: Large screens - wrap to 3 per row */
@media (max-width: 1400px) {
    .innomis-search-ktree-compact .innomis-horizontal-filters {
        flex-wrap: wrap;
    }

    .innomis-search-ktree-compact .innomis-filter-box {
        flex: 1 1 calc(33.333% - var(--filter-gap));
        height: 170px;
    }

    .innomis-search-ktree-compact .innomis-search-box .innomis-filter-box-content {
        height: calc(170px - 36px);
    }
}

/* K-Tree responsive: Medium screens - 2 per row */
@media (max-width: 1100px) {
    .innomis-search-ktree-compact .innomis-filter-box {
        flex: 1 1 calc(50% - var(--filter-gap));
        height: 160px;
    }

    .innomis-search-ktree-compact .innomis-search-box .innomis-filter-box-content {
        height: calc(160px - 36px);
    }

    .innomis-search-ktree-compact .innomis-filter-box-header {
        padding: 5px 8px;
        font-size: calc(0.95rem * var(--font-scale-post, 1));
    }
}

/* K-Tree responsive: Small screens / Mobile - stacked layout */
@media (max-width: 850px) {
    .innomis-search-ktree-compact .innomis-horizontal-filters {
        flex-direction: column;
    }

    .innomis-search-ktree-compact .innomis-filter-box {
        flex: 1 1 100%;
        height: 150px;
        min-width: 0;
    }

    .innomis-search-ktree-compact .innomis-search-box .innomis-filter-box-content {
        height: calc(150px - 34px);
    }

    .innomis-search-ktree-compact .innomis-filter-box-header {
        padding: 4px 8px;
        font-size: calc(0.9rem * var(--font-scale-post, 1));
    }

    .innomis-search-ktree-compact .innomis-filter-box-content {
        padding: 6px;
    }

    .innomis-search-ktree-compact .innomis-filter-box-label {
        font-size: calc(0.8rem * var(--font-scale-post, 1));
    }

    /* Search box adjustments for mobile */
    .innomis-search-ktree-compact .innomis-search-box-input {
        padding: 5px 8px;
    }

    .innomis-search-ktree-compact .innomis-search-box-btn.innomis-search-box-btn.innomis-search-box-btn {
        padding: 5px 8px;
        font-size: calc(0.75rem * var(--font-scale-post, 1));
    }
}

/* ==========================================================================
   Pending State - User can still interact, no visual feedback
   ========================================================================== */
.innomis-horizontal-filters.is-pending {
    position: relative;
}

/* No visual change during pending state - removed blue border/box-shadow */

/* ==========================================================================
   Loading State - AJAX in progress, user interaction blocked
   ========================================================================== */
.innomis-horizontal-filters.is-loading {
    position: relative;
    pointer-events: none;
}

/* Loading overlay - real DOM element for reliable rendering */
.innomis-filter-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.5);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.innomis-filter-loading-overlay.is-visible {
    opacity: 1;
}

/* Loading spinner - real DOM element */
.innomis-filter-loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--filter-box-header-bg, #45598f);
    border-radius: 50%;
    border-top-color: transparent;
    animation: innomis-filter-spin 0.7s linear infinite;
}

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

/* ==========================================================================
   Checkbox Stability
   Removed animations/transitions that caused jitter on scroll/hover:
   - No transform: scale() on :active (caused layout shifts)
   - No transition on checkbox (caused visual jitter)
   - No opacity transition on items (caused flicker)
   ========================================================================== */

/* ==========================================================================
   Hierarchical Filter Values
   Indentation for nested taxonomy terms (e.g., parent/child categories)
   Uses padding-left to visually represent hierarchy levels
   ========================================================================== */
.innomis-filter-box-item.innomis-hierarchy-level-1 {
    padding-left: 24px; /* 8px base + 16px hierarchy */
}

.innomis-filter-box-item.innomis-hierarchy-level-2 {
    padding-left: 40px; /* 8px base + 32px hierarchy */
}

.innomis-filter-box-item.innomis-hierarchy-level-3 {
    padding-left: 56px; /* 8px base + 48px hierarchy */
}

.innomis-filter-box-item.innomis-hierarchy-level-4 {
    padding-left: 72px; /* 8px base + 64px hierarchy */
}

/* Visual indicator for child items - subtle left border */
.innomis-filter-box-item[data-level]:not([data-level="0"]) {
    border-left: 2px solid rgba(69, 89, 143, 0.15);
    margin-left: 6px;
    padding-left: calc(8px + var(--hierarchy-indent, 16px) - 8px); /* base + hierarchy - border offset */
}

/* Compact mode in K-Tree context - slightly reduced indentation */
.innomis-search-ktree-compact .innomis-filter-box-item.innomis-hierarchy-level-1 {
    padding-left: 20px; /* 8px base + 12px hierarchy */
}

.innomis-search-ktree-compact .innomis-filter-box-item.innomis-hierarchy-level-2 {
    padding-left: 32px; /* 8px base + 24px hierarchy */
}

.innomis-search-ktree-compact .innomis-filter-box-item.innomis-hierarchy-level-3 {
    padding-left: 44px; /* 8px base + 36px hierarchy */
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    .innomis-horizontal-filters {
        display: none;
    }
}