/**
 * SBRM Custom Filters - COMPLETE WITH SKELETON LOADING
 * ✅ استایل کامل با Skeleton Loading و بهینه‌سازی عمیق
 * 
 * @version 8.0.0
 */

/* ============================================
   🎨 Font Face - IranSans
   ============================================ */
@font-face {
    font-family: 'IranSans';
    src: url('../fonts/IranSans-Regular.woff2') format('woff2'),
         url('../fonts/IranSans-Regular.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'IranSans';
    src: url('../fonts/IranSans-Bold.woff2') format('woff2'),
         url('../fonts/IranSans-Bold.woff') format('woff');
    font-weight: bold;
    font-style: normal;
    font-display: swap;
}

/* ============================================
   📦 Container - Compact & Optimized
   ============================================ */
.sbrm-custom-filters {
    background: #eaeff4;
    border-radius: 8px;
    padding: 14px 16px;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    direction: rtl;
    position: relative;
    contain: layout style;
}

/* ============================================
   📋 Header - Compact
   ============================================ */
.sbrm-filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid #fe8400;
}

.sbrm-filters-title {
    margin: 0;
    font-size: 15px;
    font-weight: bold;
    color: #0929ba;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    line-height: 1.3;
}

.sbrm-clear-all {
    background: #0929ba;
    color: #ffffff;
    border: none;
    border-radius: 5px!important;
    padding: 6px 10px!important;
    font-size: 12px;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    will-change: transform, background-color;
}

.sbrm-clear-all:hover {
    background: #061d8f;
    transform: translateY(-2px);
    box-shadow: 0 3px 8px rgba(9, 41, 186, 0.3);
}

/* ============================================
   🏷️ Selected Filters - Compact
   ============================================ */
.sbrm-selected-filters {
    margin-bottom: 10px;
    display: none;
}

.sbrm-selected-items {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.sbrm-selected-item {
    background: #ffffff;
    border: 1px solid #e9e9e9;
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
    line-height: 1.4;
    animation: sbrm-scale-in 0.3s ease-out;
}

.sbrm-selected-item:hover {
    border-color: #0929ba;
    background: #f5f7fa;
}

.sbrm-filter-name {
    color: #0929ba;
    font-weight: bold;
}

.sbrm-filter-value {
    color: #333333;
}

.sbrm-remove-filter {
    background: #fe8400;
    color: #ffffff;
    border: none;
    border-radius: 5px!important;
    padding: 5px;
    font-size: 18px!important;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    will-change: transform, background-color;
}

.sbrm-remove-filter:hover {
    background: #d66e00;
    transform: rotate(90deg);
}

/* ============================================
   🔲 Skeleton Loading - Performance Optimized
   ============================================ */
.sbrm-skeleton-filters {
    padding: 8px 0;
    animation: sbrm-fade-in 0.3s ease-in;
}

.sbrm-skeleton-item {
    background: linear-gradient(
        90deg,
        #f0f0f0 0%,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%,
        #f0f0f0 100%
    );
    background-size: 200% 100%;
    animation: sbrm-skeleton-wave 1.5s ease-in-out infinite;
    border-radius: 6px;
    height: 52px;
    margin-bottom: 10px;
    position: relative;
    overflow: hidden;
    will-change: background-position;
}

.sbrm-skeleton-item::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0,
        rgba(255, 255, 255, 0.3) 20%,
        rgba(255, 255, 255, 0.5) 60%,
        rgba(255, 255, 255, 0)
    );
    animation: sbrm-skeleton-shimmer 2s infinite;
    will-change: transform;
}

@keyframes sbrm-skeleton-wave {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes sbrm-skeleton-shimmer {
    100% { transform: translateX(100%); }
}

/* ============================================
   📁 Filters Content
   ============================================ */
.sbrm-filters-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 150px;
}

/* ============================================
   🗂️ Accordion - Compact & Optimized
   ============================================ */
.sbrm-filter-accordion {
    background: #ffffff;
    border: 1px solid #e9e9e9;
    border-radius: 6px;
    overflow: hidden;
    transition: box-shadow 0.3s ease;
    contain: layout style;
}

.sbrm-filter-accordion:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.sbrm-accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    user-select: none;
}

.sbrm-accordion-header:hover {
    background: #f8f9fb;
    border-bottom-color: #fe8400;
}

.sbrm-filter-accordion.sbrm-active .sbrm-accordion-header {
    border-bottom-color: #fe8400;
    background: #f8f9fb;
}

.sbrm-accordion-title {
    margin: 0;
    font-size: 15px;
    font-weight: bold;
    color: #0929ba;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    line-height: 1.3;
}

.sbrm-accordion-icon {
    width: 10px;
    height: 10px;
    border-left: 2px solid #0929ba;
    border-bottom: 2px solid #0929ba;
    transform: rotate(-45deg) translateZ(0);
    transition: transform 0.3s ease;
    will-change: transform;
    backface-visibility: hidden;
}

.sbrm-filter-accordion.sbrm-active .sbrm-accordion-icon {
    transform: rotate(135deg) translateZ(0);
}

/* ============================================
   📝 Accordion Content - Performance
   ============================================ */
.sbrm-accordion-content {
    display: none;
    border-top: 1px solid #e9e9e9;
}

.sbrm-accordion-body {
    max-height: 180px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 10px 14px;
    contain: layout style paint;
    will-change: scroll-position;
}

/* Custom Scrollbar - Compact */
.sbrm-accordion-body::-webkit-scrollbar {
    width: 5px;
}

.sbrm-accordion-body::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.sbrm-accordion-body::-webkit-scrollbar-thumb {
    background: #0929ba;
    border-radius: 3px;
}

.sbrm-accordion-body::-webkit-scrollbar-thumb:hover {
    background: #061d8f;
}

/* ============================================
   ☑️ Filter Options - Optimized
   ============================================ */
.sbrm-filter-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 0;
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 0;
    will-change: padding, background-color;
}

.sbrm-filter-option:hover {
    padding-right: 4px;
    background-color: rgba(9, 41, 186, 0.03);
    border-radius: 4px;
}

.sbrm-filter-option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    margin: 0;
    flex-shrink: 0;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border: 2px solid #0929ba;
    border-radius: 3px;
    position: relative;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    will-change: background-color;
}

.sbrm-filter-option input[type="checkbox"]:checked {
    background-color: #0929ba;
    border-color: #0929ba;
}

.sbrm-filter-option input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-size: 12px;
    font-weight: bold;
    line-height: 1;
}

.sbrm-filter-option input[type="checkbox"]:hover:not(:disabled) {
    border-color: #061d8f;
}

.sbrm-option-label {
    font-size: 13px;
    color: #333333;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    line-height: 1.4;
}

.sbrm-option-count {
    font-size: 11px;
    color: #777777;
    margin-right: 4px;
    font-weight: normal;
}

/* Disabled options */
.sbrm-filter-option.sbrm-option-disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

.sbrm-filter-option.sbrm-option-disabled .sbrm-option-label {
    color: #999999;
    text-decoration: line-through;
}

/* ============================================
   ⏳ Loading States - Optimized
   ============================================ */
.sbrm-filter-loader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(234, 239, 244, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    z-index: 100;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.sbrm-custom-filters.sbrm-loading .sbrm-filter-loader {
    display: flex;
    animation: sbrm-fade-in 0.2s ease-in;
}

.sbrm-loader-spinner {
    width: 36px;
    height: 36px;
    border: 4px solid #e9e9e9;
    border-top-color: #0929ba;
    border-radius: 50%;
    animation: sbrm-spin 0.8s linear infinite;
    will-change: transform;
}

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

/* ============================================
   🎬 Animations - Performance Optimized
   ============================================ */
@keyframes sbrm-fade-in {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes sbrm-scale-in {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ============================================
   🚫 CRITICAL: Hide Original Tables
   ============================================ */
.product-table-container:not(.sbrm-price-tables-wrapper .product-table-container) {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    overflow: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* ============================================
   📊 Price Tables Wrapper - Optimized
   ============================================ */
.sbrm-price-tables-wrapper {
    transition: opacity 0.3s ease;
    margin: 20px 0;
    clear: both;
    width: 100%;
    contain: layout style;
}

.sbrm-price-tables-wrapper:empty {
    min-height: 100px;
}

.sbrm-price-tables-wrapper.loading {
    position: relative;
    min-height: 250px;
    opacity: 0.6;
    pointer-events: none;
}

.sbrm-price-tables-wrapper.loading::before {
    content: 'در حال بارگذاری...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 15px;
    color: #0929ba;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    font-weight: bold;
    z-index: 10;
}

.sbrm-price-tables-wrapper.loading::after {
    content: '';
    position: absolute;
    top: calc(50% + 25px);
    left: 50%;
    width: 30px;
    height: 30px;
    margin-left: -15px;
    border: 3px solid #e9e9e9;
    border-top-color: #0929ba;
    border-radius: 50%;
    animation: sbrm-spin 0.7s linear infinite;
    z-index: 11;
}

/* Table spacing */
.sbrm-price-tables-wrapper .product-table-container {
    margin-bottom: 20px;
}

.sbrm-price-tables-wrapper .product-table-container:last-child {
    margin-bottom: 0;
}

/* ============================================
   ⚠️ Messages - Compact
   ============================================ */
.sbrm-no-results {
    padding: 20px;
    text-align: center;
    background: #f8f9fb;
    border-radius: 8px;
    margin: 15px 0;
    border: 2px dashed #e9e9e9;
    animation: sbrm-fade-in 0.3s ease-in;
}

.sbrm-no-results p {
    font-size: 14px;
    color: #666666;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    margin: 0;
    line-height: 1.5;
}

.sbrm-error {
    padding: 16px;
    text-align: center;
    background: #fff5f5;
    border: 2px solid #ffcccc;
    border-radius: 8px;
    margin: 15px 0;
    animation: sbrm-shake 0.5s ease-in-out;
}

.sbrm-error p {
    color: #d00000;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    margin: 8px 0;
    font-size: 13px;
    line-height: 1.5;
}

@keyframes sbrm-shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-3px); }
    20%, 40%, 60%, 80% { transform: translateX(3px); }
}

.sbrm-no-options-message {
    padding: 14px;
    text-align: center;
    background: #f8f9fb;
    border-radius: 6px;
    color: #999999;
    font-family: 'IranSans', 'Tahoma', sans-serif;
    font-size: 13px;
    margin-bottom: 10px;
    border: 1px dashed #e9e9e9;
    animation: sbrm-fade-in 0.3s ease-in;
}

/* ============================================
   📱 Mobile Responsive - Ultra Compact
   ============================================ */
@media (max-width: 768px) {
    .sbrm-custom-filters {
        padding: 10px 12px;
    }
    
    .sbrm-filters-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 10px;
        padding-bottom: 8px;
    }
    
    .sbrm-filters-title {
        font-size: 14px;
    }
    
    .sbrm-clear-all {
        width: 100%;
        text-align: center;
        padding: 7px 6px;
    }
    
    .sbrm-accordion-title {
        font-size: 14px;
    }
    
    .sbrm-accordion-header {
        padding: 8px 12px;
    }
    
    .sbrm-accordion-body {
        padding: 8px 12px;
        max-height: 150px;
    }
    
    .sbrm-option-label {
        font-size: 12px;
    }
    
    .sbrm-selected-item {
        font-size: 11px;
        padding: 3px 8px;
    }
    
    .sbrm-filter-option {
        padding: 4px 0;
    }
    
    .sbrm-skeleton-item {
        height: 48px;
        margin-bottom: 8px;
    }
    
    .sbrm-price-tables-wrapper.loading {
        min-height: 180px;
    }
}

/* ============================================
   🎨 Woodmart Integration
   ============================================ */
.widget.widget-sbrm-filters .sbrm-custom-filters {
    background: transparent;
    padding: 0;
}

.widget.widget-sbrm-filters .sbrm-filters-header {
    background: #eaeff4;
    padding: 12px;
    border-radius: 8px 8px 0 0;
    margin-bottom: 0;
}

/* ============================================
   🌐 RTL Support
   ============================================ */
html[dir="rtl"] .sbrm-accordion-icon {
    border-left: none;
    border-right: 2px solid #0929ba;
    transform: rotate(45deg) translateZ(0);
}

html[dir="rtl"] .sbrm-filter-accordion.sbrm-active .sbrm-accordion-icon {
    transform: rotate(-135deg) translateZ(0);
}

/* ============================================
   ⚡ Performance Optimizations
   ============================================ */
.sbrm-custom-filters * {
    will-change: auto;
}

.sbrm-filter-accordion.sbrm-active {
    will-change: transform;
}

.sbrm-accordion-content {
    will-change: height, opacity;
}

/* GPU Acceleration */
.sbrm-custom-filters,
.sbrm-filter-accordion,
.sbrm-accordion-content {
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    backface-visibility: hidden;
}

/* CSS Containment */
.sbrm-filter-accordion {
    content-visibility: auto;
    contain-intrinsic-size: 0 60px;
}

/* ============================================
   ♿ Accessibility
   ============================================ */
.sbrm-filter-option:focus-within {
    outline: 2px solid #0929ba;
    outline-offset: 2px;
    border-radius: 4px;
    background-color: rgba(9, 41, 186, 0.05);
}

.sbrm-accordion-header:focus {
    outline: 2px solid #0929ba;
    outline-offset: -2px;
}

.sbrm-clear-all:focus,
.sbrm-remove-filter:focus {
    outline: 2px solid #0929ba;
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .sbrm-filter-option.sbrm-option-disabled {
        opacity: 0.5;
    }
    
    .sbrm-skeleton-item {
        border: 2px solid #cccccc;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   🖨️ Print Styles
   ============================================ */
@media print {
    .sbrm-custom-filters,
    .sbrm-filter-loader,
    .sbrm-skeleton-filters {
        display: none !important;
    }
}

/* ============================================
   🌙 Dark Mode Support (Optional)
   ============================================ */
@media (prefers-color-scheme: dark) {
    .sbrm-custom-filters {
        background: #1a1a1a;
        color: #e0e0e0;
    }
    
    .sbrm-filter-accordion {
        background: #2a2a2a;
        border-color: #3a3a3a;
    }
    
    .sbrm-skeleton-item {
        background: linear-gradient(
            90deg,
            #2a2a2a 0%,
            #2a2a2a 25%,
            #3a3a3a 50%,
            #2a2a2a 75%,
            #2a2a2a 100%
        );
    }
}