/**
 * WooCommerce Product Category & Single Product Custom CSS - Hello Elementor Child
 * Matches reference design mockup & includes standardized Responsive Container System
 */

:root {
    --tt-primary: #0b4d8c;
    --tt-primary-hover: #083866;
    --tt-badge-blue: #0b5ed7;
    --tt-bg-card: #eef3f9;
    --tt-text-main: #1e293b;
    --tt-text-muted: #64748b;
    --tt-border-light: #e2e8f0;
    --tt-radius: 12px;
}

/* ==========================================================================
   Standardized Responsive Container System (.container, .container-sm, etc.)
   ========================================================================== */
.container,
.container-sm,
.container-md,
.container-lg,
.container-xl,
.container-xxl {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: 16px;
    padding-left: 16px;
    box-sizing: border-box;
}

.container-fluid {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: 16px;
    padding-left: 16px;
    box-sizing: border-box;
}

/* Breakpoint Max-Width Boundaries */
@media (min-width: 576px) {
    .container, .container-sm {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container, .container-sm, .container-md {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container, .container-sm, .container-md, .container-lg {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container, .container-sm, .container-md, .container-lg, .container-xl {
        max-width: 1140px;
    }
}

@media (min-width: 1400px) {
    .container, .container-sm, .container-md, .container-lg, .container-xl, .container-xxl {
        max-width: 1320px;
    }
}

/* Base Layout Container Adjustments */
.tt-category-page-site-main,
.tt-single-product-page-main {
    background-color: #ffffff;
    color: var(--tt-text-main);
    padding-top: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

.tt-category-container,
.tt-single-product-container {
    margin-top: 80px;
}

/* Top Header & Breadcrumb */
.tt-category-header {
    margin-bottom: 24px;
}

.tt-page-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 10px 0;
    line-height: 1.2;
}

.tt-breadcrumb .tt-breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--tt-text-muted);
}

.tt-breadcrumb .tt-breadcrumb-list li {
    display: inline-flex;
    align-items: center;
}

.tt-breadcrumb .tt-breadcrumb-list a {
    color: var(--tt-text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.tt-breadcrumb .tt-breadcrumb-list a:hover {
    color: var(--tt-primary);
}

/* Top Filter Form & Bar */
.tt-filter-form {
    width: 100%;
}

.tt-filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 36px;
    padding-bottom: 16px;
}

.tt-filter-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

/* Search Box in Filter Bar */
.tt-filter-search-box {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.tt-filter-search-box .tt-search-icon {
    position: absolute;
    left: 14px;
    color: var(--tt-text-muted);
    pointer-events: none;
}

.tt-filter-search-input {
    background: #ffffff;
    border: 1px solid var(--tt-border-light);
    border-radius: 10px;
    padding: 10px 16px 10px 38px;
    font-size: 14px;
    color: var(--tt-text-main);
    outline: none;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    min-width: 200px;
}

.tt-filter-search-input:focus {
    border-color: var(--tt-primary);
    box-shadow: 0 0 0 3px rgba(11, 77, 140, 0.12);
}

/* Dynamic Select Dropdowns */
.tt-filter-dropdown-select {
    display: inline-flex;
}

.tt-filter-select {
    appearance: none;
    -webkit-appearance: none;
    background: #ffffff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 14px center;
    border: 1px solid var(--tt-border-light);
    border-radius: 10px;
    padding: 10px 36px 10px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--tt-text-main);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    transition: all 0.2s ease;
    outline: none;
}

.tt-filter-select:hover,
.tt-filter-select:focus {
    border-color: var(--tt-primary);
    color: var(--tt-primary);
}

.tt-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #7cb342;
    color: #ffffff;
    border: none;
    border-radius: 10px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(124, 179, 66, 0.3);
    transition: all 0.2s ease;
}

.tt-filter-btn:hover {
    background: #689f38;
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(124, 179, 66, 0.4);
}

.tt-filter-reset-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--tt-text-muted);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.tt-filter-reset-btn:hover {
    color: #dc2626;
    background: #fef2f2;
}

.tt-product-count {
    font-size: 14px;
    font-weight: 600;
    color: var(--tt-text-muted);
}

/* Category Grid Layout (Sidebar + Products) */
.tt-category-content-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    align-items: start;
}

/* Sidebar Left */
.tt-sidebar-box {
    background: #ffffff;
    border-radius: var(--tt-radius);
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    border: 1px solid var(--tt-border-light);
}

.tt-sidebar-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 20px 0;
    line-height: 1.2;
}

.tt-current-cat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--tt-border-light);
}

.tt-current-cat-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--tt-primary);
}

.tt-badge-icon {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: default;
}

.tt-badge-text {
    display: none;
}

/* Subcategories Tree List */
.tt-subcat-list,
.tt-child-cat-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tt-subcat-item {
    margin-bottom: 12px;
}

.tt-main-cat-link {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: var(--tt-text-main);
    text-decoration: none;
    padding: 6px 0;
    transition: color 0.2s ease;
}

.tt-main-cat-link:hover,
.tt-subcat-item.active > .tt-main-cat-link {
    color: var(--tt-primary);
}

.tt-child-cat-list {
    margin-top: 6px;
    padding-left: 14px;
}

.tt-child-cat-item {
    margin-bottom: 8px;
}

.tt-child-cat-item a {
    display: block;
    font-size: 14px;
    color: var(--tt-text-muted);
    text-decoration: none;
    transition: all 0.2s ease;
}

.tt-child-cat-item a:hover,
.tt-child-cat-item.active-child a {
    color: var(--tt-primary);
    font-weight: 700;
}

/* Products Section Right */
.tt-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.tt-product-card {
    background: var(--tt-bg-card);
    border-radius: 16px;
    overflow: hidden;
    padding: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.tt-product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(11, 77, 140, 0.12);
}

.tt-product-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Badges Pills */
.tt-product-badges {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-bottom: 12px;
    min-height: 52px;
}

.tt-badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #ffffff;
    border-radius: 20px;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 800;
    color: var(--tt-badge-blue);
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

.tt-badge-icon {
    flex-shrink: 0;
}

/* Product Image */
.tt-product-image-wrapper {
    width: 100%;
    height: 220px;
    border-radius: 12px;
    overflow: hidden;
    background: #ffffff;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tt-product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.tt-product-card:hover .tt-product-img {
    transform: scale(1.05);
}

/* Product Title & Price */
.tt-product-info {
    margin-top: auto;
}

.tt-product-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--tt-text-main);
    margin: 0 0 10px 0;
    line-height: 1.35;
}

.tt-product-price {
    font-size: 18px;
    font-weight: 800;
    color: #e67e22;
}

.tt-product-price .tt-price-contact {
    color: var(--tt-primary);
    font-size: 18px;
    font-weight: 800;
}

/* Pagination Wrapper */
.tt-pagination-wrapper {
    margin-top: 40px;
    display: flex;
    justify-content: center;
}

.tt-pagination-wrapper ul.page-numbers {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 8px;
}

.tt-pagination-wrapper .page-numbers li a,
.tt-pagination-wrapper .page-numbers li span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: 10px;
    background: #ffffff;
    border: 1px solid var(--tt-border-light);
    color: var(--tt-text-main);
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s ease;
}

.tt-pagination-wrapper .page-numbers li span.current {
    background: var(--tt-primary);
    color: #ffffff;
    border-color: var(--tt-primary);
}

/* Empty State Notice */
.tt-no-products-box {
    background: #ffffff;
    border: 2px dashed #cbd5e1;
    border-radius: 16px;
    padding: 60px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 600px;
    margin: 20px auto;
}

.tt-no-products-icon {
    width: 80px;
    height: 80px;
    background: #f1f5f9;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.tt-no-products-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 10px 0;
}

.tt-no-products-desc {
    font-size: 15px;
    color: var(--tt-text-muted);
    margin: 0 0 24px 0;
    line-height: 1.5;
}

.tt-btn-large {
    padding: 12px 24px;
    font-size: 15px;
}

/* ==========================================================================
   Consultation Form Component (Form Tư Vấn Bottom Banner)
   ========================================================================== */
.tt-consultation-section {
    width: 100%;
    background-color: #0b4d8c;
    color: #ffffff;
    padding: 60px 0;
    margin-top: 60px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.tt-consultation-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.tt-consult-left {
    display: flex;
    flex-direction: column;
}

.tt-consult-title {
    font-size: 36px;
    font-weight: 800;
    color: #ffffff;
    margin: 0 0 16px 0;
    line-height: 1.25;
}

.tt-consult-desc {
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 28px 0;
}

.tt-consult-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tt-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.tt-input-field,
.tt-textarea-field {
    width: 100%;
    background: #ffffff;
    border: 1px solid #ffffff;
    border-radius: 8px;
    padding: 13px 18px;
    font-size: 14px;
    color: #1e293b;
    outline: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    box-sizing: border-box;
}

.tt-textarea-field {
    resize: vertical;
    min-height: 100px;
}

.tt-consult-submit-btn {
    width: 100%;
    background-color: #7cb342;
    color: #ffffff;
    font-size: 16px;
    font-weight: 700;
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(124, 179, 66, 0.35);
    transition: background-color 0.25s ease, transform 0.2s ease;
    margin-top: 6px;
}

.tt-consult-submit-btn:hover {
    background-color: #689f38;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(124, 179, 66, 0.45);
}

.tt-consult-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.tt-consult-image-wrapper {
    width: 100%;
    max-width: 540px;
    height: 380px;
    border-top-left-radius: 130px;
    border-top-right-radius: 16px;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

.tt-consult-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ==========================================================================
   Single Product Custom Page Layout (B2B Lead Generation Conversion UI)
   ========================================================================== */
.tt-single-product-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

/* Gallery Column */
.tt-single-gallery-column {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tt-main-image-stage {
    position: relative;
    width: 100%;
    height: 440px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tt-main-image-stage img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}

.tt-gallery-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid #cbd5e1;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: #1e293b;
    transition: all 0.2s ease;
    z-index: 2;
}

.tt-gallery-arrow:hover {
    background: #0b5ed7;
    color: #ffffff;
    border-color: #0b5ed7;
}

.tt-prev-arrow { left: 14px; }
.tt-next-arrow { right: 14px; }

.tt-gallery-thumbnails {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 6px;
}

.tt-thumb-item {
    width: 90px;
    height: 90px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background: #f8fafc;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.tt-thumb-item:hover,
.tt-thumb-item.active {
    border-color: #0b5ed7;
    box-shadow: 0 0 0 2px rgba(11, 94, 215, 0.25);
}

.tt-thumb-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Right Summary Column */
.tt-single-summary-column {
    display: flex;
    flex-direction: column;
}

.tt-single-title {
    font-size: 30px;
    font-weight: 800;
    color: #0f172a;
    margin: 0 0 14px 0;
    line-height: 1.3;
}

.tt-single-price-wrapper {
    margin-bottom: 24px;
}

.tt-single-price {
    font-size: 28px;
    font-weight: 800;
    color: #0b5ed7;
    line-height: 1;
}

.tt-single-price .tt-price-contact {
    color: #0b5ed7;
    font-size: 26px;
    font-weight: 800;
}

.tt-single-price-disclaimer {
    font-size: 13px;
    color: #64748b;
    margin: 6px 0 0 0;
}

/* Specifications Table ("Thông tin chung") */
.tt-specs-box {
    margin-bottom: 24px;
    background: #f8fafc;
    border-radius: 10px;
    padding: 18px 20px;
    border: 1px solid #f1f5f9;
}

.tt-specs-title {
    font-size: 18px;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 12px 0;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 8px;
}

.tt-specs-table {
    width: 100%;
    border-collapse: collapse;
}

.tt-specs-table tr {
    border-bottom: 1px dashed #e2e8f0;
}

.tt-specs-table tr:last-child {
    border-bottom: none;
}

.tt-specs-table td {
    padding: 8px 0;
    font-size: 14.5px;
    line-height: 1.4;
}

.tt-spec-label {
    color: #475569;
    font-weight: 500;
    width: 55%;
}

.tt-spec-val {
    color: #0f172a;
    font-weight: 700;
    text-align: right;
}

/* Quantity Control */
.tt-quantity-row {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.tt-qty-label {
    font-size: 14px;
    font-weight: 600;
    color: #334155;
}

.tt-qty-stepper {
    display: inline-flex;
    align-items: center;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    overflow: hidden;
    background: #ffffff;
}

.tt-qty-btn {
    width: 36px;
    height: 36px;
    background: #f1f5f9;
    border: none;
    font-size: 16px;
    font-weight: 700;
    color: #334155;
    cursor: pointer;
    transition: background 0.2s ease;
}

.tt-qty-btn:hover {
    background: #e2e8f0;
}

.tt-qty-input {
    width: 50px;
    height: 36px;
    border: none;
    text-align: center;
    font-size: 15px;
    font-weight: 700;
    color: #0f172a;
    outline: none;
    -moz-appearance: textfield;
}

.tt-qty-input::-webkit-outer-spin-button,
.tt-qty-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Conversion CTA Action Buttons Grid */
.tt-cta-buttons-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tt-cta-row-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.tt-btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    box-sizing: border-box;
    text-align: center;
}

/* Row 1 Buttons */
.tt-btn-call {
    background-color: #0b5ed7;
    color: #ffffff;
    border: 1.5px solid #0b5ed7;
}

.tt-btn-call:hover {
    background-color: #0a58ca;
    box-shadow: 0 4px 14px rgba(11, 94, 215, 0.35);
}

.tt-btn-zalo {
    background-color: #0068ff;
    color: #ffffff;
    border: 1.5px solid #0068ff;
}

.tt-btn-zalo:hover {
    background-color: #0056d6;
    box-shadow: 0 4px 14px rgba(0, 104, 255, 0.35);
}

.tt-zalo-badge {
    background: #ffffff;
    color: #0068ff;
    font-size: 11px;
    font-weight: 900;
    padding: 2px 6px;
    border-radius: 4px;
    line-height: 1;
}

/* Row 2 Quote Button */
.tt-btn-quote {
    background-color: #3b82f6;
    color: #ffffff;
    border: 1.5px solid #3b82f6;
    width: 100%;
    font-size: 16px;
}

.tt-btn-quote:hover {
    background-color: #2563eb;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

/* Row 3 Outline Buttons */
.tt-btn-outline {
    background-color: #ffffff;
    color: #0b5ed7;
    border: 1.5px solid #0b5ed7;
}

.tt-btn-outline:hover {
    background-color: #eef4ff;
    border-color: #0a58ca;
    color: #0a58ca;
}

/* Middle Section: Tabs & Detailed Content */
.tt-single-tabs-section {
    margin-top: 50px;
    margin-bottom: 60px;
}

.tt-tab-headers {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid #e2e8f0;
}

.tt-tab-btn {
    padding: 14px 32px;
    background: #f1f5f9;
    border: none;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    color: #64748b;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tt-tab-btn:hover {
    color: #0b5ed7;
    background: #eef4ff;
}

.tt-tab-btn.active {
    background: #eef4ff;
    color: #0b5ed7;
    border-bottom: 3px solid #0b5ed7;
}

.tt-tab-panels-wrapper {
    background: #ffffff;
    border-radius: 0 0 12px 12px;
    padding: 40px 0;
}

.tt-tab-panel {
    display: none;
}

.tt-tab-panel.active {
    display: block;
}

/* Overview Block */
.tt-overview-block {
    margin-bottom: 48px;
}

.tt-overview-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 40px;
    align-items: center;
}

.tt-block-title {
    font-size: 26px;
    font-weight: 800;
    color: #0f172a;
    margin: 0 0 20px 0;
}

.tt-entry-content p {
    font-size: 15px;
    line-height: 1.7;
    color: #334155;
    margin-bottom: 16px;
}

.tt-overview-image img,
.tt-highlights-image img {
    width: 100%;
    max-height: 380px;
    object-fit: contain;
    border-radius: 12px;
    background: #f8fafc;
    border: 1px solid #f1f5f9;
}

/* Highlights Block */
.tt-highlights-block {
    background: #f8fafc;
    border-radius: 16px;
    padding: 40px;
    border: 1px solid #f1f5f9;
}

.tt-highlights-grid {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 40px;
    align-items: center;
}

.tt-highlights-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tt-highlights-list li {
    font-size: 15.5px;
    color: #1e293b;
    margin-bottom: 14px;
    position: relative;
    padding-left: 24px;
    line-height: 1.5;
}

.tt-highlights-list li::before {
    content: "•";
    position: absolute;
    left: 4px;
    top: -2px;
    color: #0b5ed7;
    font-size: 22px;
    font-weight: bold;
}

/* Related Products Section */
.tt-related-products-section {
    margin-top: 60px;
    margin-bottom: 60px;
}

.tt-related-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 28px 0;
    position: relative;
    padding-bottom: 12px;
}

.tt-related-title::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 4px;
    background-color: var(--tt-badge-blue);
    border-radius: 2px;
}

/* ==========================================================================
   Floating Contact Sidebar Buttons (Messenger, Zalo, Phone Call)
   ========================================================================== */
.tt-floating-contact-sidebar {
    position: fixed;
    right: 14px;
    bottom: 90px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 99999;
}

.tt-float-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    position: relative;
}

.tt-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

/* Messenger Gradient Button */
.tt-float-messenger {
    background: linear-gradient(135deg, #00c6ff 0%, #0078ff 50%, #b400ff 100%);
    color: #ffffff;
}

/* Zalo Circle Button */
.tt-float-zalo {
    background: #0068ff;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.tt-float-zalo-text {
    font-size: 13px;
    font-weight: 900;
    letter-spacing: -0.3px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Phone Blue Circle Button with Pulse Animation */
.tt-float-phone {
    background: #0b5ed7;
    color: #ffffff;
    animation: tt-pulse-phone 2s infinite;
}

@keyframes tt-pulse-phone {
    0% {
        box-shadow: 0 0 0 0 rgba(11, 94, 215, 0.6);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(11, 94, 215, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(11, 94, 215, 0);
    }
}

/* ==========================================================================
   Full Responsive Breakpoints (Tablet, Mobile & Container Adjustments)
   ========================================================================== */
@media (max-width: 1200px) {
    .tt-products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 992px) {
    .tt-category-content-layout {
        grid-template-columns: 1fr;
    }

    .tt-category-sidebar {
        margin-bottom: 24px;
    }

    .tt-single-product-hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .tt-overview-grid,
    .tt-highlights-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .tt-consultation-container {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .tt-consult-image-wrapper {
        height: 300px;
    }

    .tt-main-image-stage {
        height: 360px;
    }
}

@media (max-width: 768px) {
    .tt-page-title {
        font-size: 30px;
    }

    .tt-filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .tt-filter-group {
        width: 100%;
    }

    .tt-filter-search-box {
        width: 100%;
    }

    .tt-filter-search-input {
        width: 100%;
    }

    .tt-filter-dropdown-select {
        width: 100%;
    }

    .tt-filter-select {
        width: 100%;
    }

    .tt-filter-btn {
        width: 100%;
        justify-content: center;
    }

    .tt-products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 16px;
    }

    .tt-consult-title {
        font-size: 28px;
    }

    .tt-highlights-block {
        padding: 24px;
    }

    .tt-floating-contact-sidebar {
        right: 14px;
        bottom: 20px;
        gap: 10px;
    }
    
    .tt-float-btn {
        width: 46px;
        height: 46px;
    }
}

@media (max-width: 576px) {
    .tt-products-grid {
        grid-template-columns: 1fr;
    }

    .tt-cta-row-split {
        grid-template-columns: 1fr;
    }

    .tt-form-row {
        grid-template-columns: 1fr;
    }

    .tt-single-title {
        font-size: 22px;
    }

    .tt-tab-btn {
        padding: 10px 14px;
        font-size: 13.5px;
    }

    .tt-main-image-stage {
        height: 280px;
    }
}

/* ==========================================================================
   404 Error Page Custom UI Component (.tt-404-*)
   ========================================================================== */
.tt-404-site-main {
    background-color: #f8fafc;
    color: var(--tt-text-main);
    padding: 60px 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.tt-404-container {
    display: flex;
    justify-content: center;
    margin-top: 90px;
}

.tt-404-hero-card {
    width: 100%;
    max-width: 880px;
    background: #ffffff;
    border: 1px solid var(--tt-border-light);
    border-radius: 24px;
    padding: 56px 40px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(11, 77, 140, 0.07);
    margin: 20px 0;
}

/* Graphic 404 Number Badge */
.tt-404-badge-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.tt-404-number-graphic {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.tt-404-digit {
    font-size: 88px;
    font-weight: 900;
    line-height: 1;
    color: var(--tt-primary);
    letter-spacing: -2px;
}

.tt-404-icon-circle {
    width: 76px;
    height: 76px;
    background: linear-gradient(135deg, #eef3f9 0%, #dbeafe 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--tt-primary);
    box-shadow: 0 8px 20px rgba(11, 77, 140, 0.12);
    animation: tt-pulse 3s infinite ease-in-out;
}

@keyframes tt-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 8px 20px rgba(11, 77, 140, 0.12); }
    50% { transform: scale(1.05); box-shadow: 0 12px 28px rgba(11, 77, 140, 0.22); }
}

/* Titles */
.tt-404-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 14px 0;
    line-height: 1.25;
}

.tt-404-subtitle {
    font-size: 16px;
    color: var(--tt-text-muted);
    line-height: 1.6;
    max-width: 620px;
    margin: 0 auto 32px;
}

/* Search Box */
.tt-404-search-box {
    max-width: 580px;
    margin: 0 auto 36px;
}

.tt-404-search-form {
    width: 100%;
}

.tt-404-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.tt-404-search-icon {
    position: absolute;
    left: 18px;
    color: var(--tt-text-muted);
    pointer-events: none;
}

.tt-404-search-input {
    width: 100%;
    background: #ffffff;
    border: 2px solid var(--tt-border-light);
    border-radius: 12px;
    padding: 14px 130px 14px 50px;
    font-size: 15px;
    color: var(--tt-text-main);
    outline: none;
    transition: all 0.25s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.tt-404-search-input:focus {
    border-color: var(--tt-primary);
    box-shadow: 0 0 0 4px rgba(11, 77, 140, 0.12);
}

.tt-404-search-btn {
    position: absolute;
    right: 6px;
    top: 6px;
    bottom: 6px;
    background: #7cb342;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 0 20px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 10px rgba(124, 179, 66, 0.25);
}

.tt-404-search-btn:hover {
    background: #689f38;
    box-shadow: 0 6px 14px rgba(124, 179, 66, 0.35);
}

/* Action Buttons */
.tt-404-action-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 40px;
}

.tt-404-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.25s ease;
    box-sizing: border-box;
}

.tt-404-btn-primary {
    background: var(--tt-primary);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(11, 77, 140, 0.25);
}

.tt-404-btn-primary:hover {
    background: var(--tt-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(11, 77, 140, 0.35);
    color: #ffffff;
}

.tt-404-btn-secondary {
    background: #0b5ed7;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(11, 94, 215, 0.25);
}

.tt-404-btn-secondary:hover {
    background: #094db2;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(11, 94, 215, 0.35);
    color: #ffffff;
}

.tt-404-btn-outline {
    background: #ffffff;
    color: var(--tt-primary);
    border: 1px solid var(--tt-border-light);
}

.tt-404-btn-outline:hover {
    border-color: var(--tt-primary);
    background: #f1f5f9;
    color: var(--tt-primary);
    transform: translateY(-2px);
}

/* Recommended Categories Section */
.tt-404-categories-block {
    border-top: 1px dashed var(--tt-border-light);
    margin-top: 36px;
    padding-top: 32px;
    text-align: left;
}

.tt-404-categories-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 18px 0;
    text-align: center;
}

.tt-404-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.tt-404-cat-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--tt-bg-card);
    border: 1px solid transparent;
    border-radius: 12px;
    padding: 14px 18px;
    text-decoration: none;
    color: var(--tt-text-main);
    font-weight: 700;
    font-size: 14px;
    transition: all 0.25s ease;
}

.tt-404-cat-card svg {
    color: var(--tt-primary);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.tt-404-cat-card:hover {
    background: #ffffff;
    border-color: var(--tt-primary);
    box-shadow: 0 6px 16px rgba(11, 77, 140, 0.08);
    transform: translateY(-2px);
    color: var(--tt-primary);
}

.tt-404-cat-card:hover svg {
    transform: scale(1.1);
}

/* Responsive 404 */
@media (max-width: 768px) {
    .tt-404-hero-card {
        padding: 40px 20px;
        border-radius: 16px;
    }

    .tt-404-digit {
        font-size: 64px;
    }

    .tt-404-icon-circle {
        width: 60px;
        height: 60px;
    }

    .tt-404-icon-circle svg {
        width: 36px;
        height: 36px;
    }

    .tt-404-title {
        font-size: 24px;
    }

    .tt-404-subtitle {
        font-size: 14px;
    }

    .tt-404-search-input {
        padding: 12px 105px 12px 44px;
        font-size: 14px;
    }

    .tt-404-search-btn {
        padding: 0 14px;
        font-size: 13px;
    }

    .tt-404-action-buttons {
        flex-direction: column;
        width: 100%;
    }

    .tt-404-btn {
        width: 100%;
    }

    .tt-404-categories-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   News Category & Articles Custom UI Component (.tt-news-*)
   ========================================================================== */
.tt-news-site-main {
    background-color: #ffffff;
    color: var(--tt-text-main);
    padding: 30px 0 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

.tt-news-container {
    margin-top: 90px;
}

/* Header & Breadcrumbs */
.tt-news-page-header {
    margin-bottom: 30px;
}

.tt-news-page-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 0 0 10px 0;
    line-height: 1.2;
}

/* Section Title with Vertical Accent Bar */
.tt-news-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    color: var(--tt-primary);
    margin: 36px 0 24px 0;
}

.tt-news-bar-accent {
    width: 4px;
    height: 26px;
    background-color: var(--tt-badge-blue);
    border-radius: 2px;
    display: inline-block;
    flex-shrink: 0;
}

/* ==========================================================================
   Section 1: Tin Nổi Bật (Featured News Carousel & Hero Card)
   ========================================================================== */
.tt-news-featured-section {
    margin-bottom: 50px;
}

.tt-news-featured-carousel-wrapper {
    position: relative;
    width: 100%;
}

.tt-news-featured-slides {
    position: relative;
    width: 100%;
}

.tt-news-featured-slide {
    display: none;
    width: 100%;
    animation: tt-fadeIn 0.4s ease-in-out;
}

.tt-news-featured-slide.active {
    display: block;
}

@keyframes tt-fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.tt-news-featured-card {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    background: #edf2f7;
    border-radius: 12px;
    overflow: hidden;
    min-height: 380px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* Left Image Stage */
.tt-news-featured-image-stage {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 360px;
    background: #0b5ed7;
    overflow: hidden;
}

.tt-news-featured-img-link {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
}

.tt-news-featured-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.tt-news-featured-card:hover .tt-news-featured-img {
    transform: scale(1.03);
}

.tt-news-featured-img-banner {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: #0b5ed7;
    color: #ffffff;
    padding: 14px 20px;
    text-align: center;
}

.tt-news-banner-title {
    display: block;
    font-size: 16px;
    font-weight: 800;
    color: #ffffff;
    text-transform: uppercase;
    line-height: 1.35;
    letter-spacing: 0.3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Right Content Box */
.tt-news-featured-content-box {
    padding: 44px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: #edf2f7;
}

.tt-news-featured-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.tt-news-cat-pill {
    background: #0b5ed7;
    color: #ffffff;
    padding: 5px 14px;
    border-radius: 4px;
    font-size: 12.5px;
    font-weight: 700;
    display: inline-block;
}

.tt-news-date {
    font-size: 14px;
    color: #475569;
    font-weight: 500;
}

.tt-news-featured-title {
    font-size: 22px;
    font-weight: 800;
    color: #0b4d8c;
    line-height: 1.45;
    margin: 0 0 36px 0;
    text-transform: uppercase;
}

.tt-news-featured-title a {
    color: #0b4d8c;
    text-decoration: none;
    transition: color 0.2s ease;
}

.tt-news-featured-title a:hover {
    color: #0b5ed7;
}

.tt-news-featured-action {
    margin-top: auto;
}

.tt-news-btn-detail {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 32px;
    background: transparent;
    border: 1px solid #0b4d8c;
    color: #0b4d8c;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    border-radius: 2px;
    transition: all 0.25s ease;
}

.tt-news-btn-detail:hover {
    background: #0b4d8c;
    color: #ffffff;
    border-color: #0b4d8c;
    transform: translateY(-1px);
}

/* Dots Indicator */
.tt-news-dots-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.tt-news-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #e2e8f0;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all 0.25s ease;
}

.tt-news-dot.active {
    background: #0b4d8c;
    width: 10px;
    height: 10px;
}

/* ==========================================================================
   Section 2: Tin Tức Khác (3-Column Grid)
   ========================================================================== */
.tt-news-grid-section {
    margin-bottom: 60px;
}

.tt-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 40px;
}

.tt-news-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.tt-news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(11, 77, 140, 0.08);
}

.tt-news-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

/* Card Image Stage with Overlay Banner */
.tt-news-card-img-stage {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: #0b5ed7;
}

.tt-news-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}

.tt-news-card:hover .tt-news-card-img {
    transform: scale(1.05);
}

.tt-news-card-banner {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: #0b5ed7;
    color: #ffffff;
    padding: 10px 14px;
    text-align: center;
}

.tt-news-card-banner-text {
    display: block;
    font-size: 12px;
    font-weight: 800;
    color: #ffffff;
    text-transform: uppercase;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Card Body */
.tt-news-card-body {
    padding: 22px 20px 65px 20px;
    flex-grow: 1;
}

.tt-news-card-date {
    display: block;
    font-size: 13.5px;
    color: #64748b;
    margin-bottom: 10px;
    font-weight: 500;
}

.tt-news-card-title {
    font-size: 17px;
    font-weight: 700;
    color: #1e293b;
    line-height: 1.45;
    margin: 0;
    transition: color 0.2s ease;
}

.tt-news-card:hover .tt-news-card-title {
    color: #0b4d8c;
}

/* Square Blue Arrow Button */
.tt-news-card-footer {
    position: absolute;
    bottom: 20px;
    right: 20px;
}

.tt-news-arrow-btn {
    width: 40px;
    height: 40px;
    background: #0b5ed7;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.2s ease, transform 0.2s ease;
}

.tt-news-card:hover .tt-news-arrow-btn {
    background: #083866;
    transform: translateX(2px);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .tt-news-featured-card {
        grid-template-columns: 1fr;
    }

    .tt-news-featured-image-stage {
        height: 280px;
        min-height: auto;
    }

    .tt-news-featured-content-box {
        padding: 30px 24px;
    }

    .tt-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .tt-news-grid {
        grid-template-columns: 1fr;
    }

    .tt-news-page-title {
        font-size: 26px;
    }

    .tt-news-section-title {
        font-size: 20px;
    }

    .tt-news-featured-title {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .tt-news-featured-content-box {
        padding: 24px 18px;
    }

    .tt-news-card-img-stage {
        height: 190px;
    }
}

/* ==========================================================================
   Single Post Detail Custom UI Component (.tt-single-post-*)
   ========================================================================== */
.tt-single-post-site-main {
    background-color: #ffffff;
    color: var(--tt-text-main);
    padding-top: 30px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.tt-single-post-container {
    margin-top: 90px;
}

.tt-single-post-article {
    max-width: 920px;
    margin: 0 auto 60px;
}

.tt-post-header {
    margin-bottom: 28px;
}

.tt-post-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
}

.tt-post-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--tt-primary);
    line-height: 1.3;
    margin: 0;
}

.tt-post-featured-image-stage {
    width: 100%;
    max-height: 480px;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 40px;
    background: #f1f5f9;
}

.tt-post-featured-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.tt-post-entry-content {
    font-size: 16.5px;
    line-height: 1.85;
    color: #334155;
}

.tt-post-entry-content p {
    margin-bottom: 22px;
}

.tt-post-entry-content h2,
.tt-post-entry-content h3,
.tt-post-entry-content h4 {
    color: var(--tt-primary);
    font-weight: 800;
    margin: 32px 0 16px;
}

.tt-post-entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 20px 0;
}

.tt-post-entry-content blockquote {
    border-left: 4px solid var(--tt-badge-blue);
    background: #f8fafc;
    padding: 18px 24px;
    margin: 24px 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
}

@media (max-width: 768px) {
    .tt-post-title {
        font-size: 24px;
    }

    .tt-post-featured-image-stage {
        max-height: 280px;
    }
}