/* ========================================
   Knowledge Hub Page Styles
   Terahealth - Education Library
======================================== */

/* --- Hero Section --- */
.insights-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #fff 0%, var(--color-blue-light) 100%);
    padding: 120px 0 80px;
    text-align: center;
    color: var(--color-navy-deep);
}

.insights-hero::after {
    content: "";
    position: absolute;
    right: -90px;
    bottom: -120px;
    width: 360px;
    height: 220px;
    border: 22px solid var(--color-blue-main);
    border-top: 0;
    border-radius: 0 0 360px 360px;
    opacity: 0.16;
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    background: var(--color-blue-main);
    color: #fff;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 25px;
}

.insights-hero .hero-title {
    color: var(--color-navy-deep);
    font-size: 48px;
    margin-bottom: 20px;
}

.insights-hero .hero-subtitle {
    font-size: 18px;
    max-width: 760px;
    margin: 0 auto;
    color: var(--color-gray-700);
}

/* --- Filter Section --- */
.filter-section {
    padding: 40px 0 20px;
    background: #fff;
    border-bottom: 1px solid var(--color-gray-300);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

@media (max-width: 767px) {
    .filter-tabs {
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 8px;
        scrollbar-width: thin;
        scroll-snap-type: x proximity;
    }

    .filter-btn {
        flex: 0 0 auto;
        scroll-snap-align: start;
    }
}

.filter-btn {
    background: transparent;
    border: 2px solid var(--color-gray-300);
    padding: 10px 24px;
    border-radius: 40px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--color-navy-deep);
}

.filter-btn:hover {
    border-color: var(--color-blue-main);
    background: var(--color-blue-light);
}

.filter-btn.active {
    background: var(--color-blue-main);
    border-color: var(--color-blue-main);
    color: #fff;
}

/* --- Insights Grid --- */
.insights-grid-section {
    padding: 60px 0;
    background: var(--color-gray-100);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 30px;
}

.insight-card {
    background: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.insight-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.insight-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.insight-card:hover .insight-image img {
    transform: scale(1.05);
}

.insight-category {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: #fff;
}

.insight-category.oral-health {
    background: var(--color-blue-main);
}
.insight-category.product-guidance {
    background: var(--color-blue-main);
}
.insight-category.ingredients {
    background: #596B6A;
}
.insight-category.decision-guides {
    background: #111;
}
.insight-category.partners {
    background: #0B6AA5;
}

.insight-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.insight-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 12px;
    font-size: 12px;
    color: var(--color-gray-700);
    flex-wrap: wrap;
}

.insight-meta i {
    margin-right: 5px;
    width: 14px;
}

.insight-content h3 {
    font-size: 18px;
    color: var(--color-navy-deep);
    margin-bottom: 12px;
    line-height: 1.4;
}

.insight-content p {
    font-size: 14px;
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: 15px;
}

.btn-link {
    color: var(--color-blue-main);
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition-fast);
    margin-top: auto;
}

.btn-link:hover {
    color: var(--color-navy-deep);
    gap: 8px;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 60px 20px;
    background: #fff;
    border-radius: var(--border-radius);
    margin: 0 auto 60px;
    max-width: 500px;
}

.no-results i {
    font-size: 60px;
    color: var(--color-gray-300);
    margin-bottom: 20px;
}

.no-results h3 {
    font-size: 24px;
    color: var(--color-navy-deep);
    margin-bottom: 10px;
}

.no-results p {
    color: var(--color-gray-700);
}

/* --- Newsletter Section --- */
.newsletter-section {
    padding: 60px 0;
    background: var(--color-blue-light);
}

.newsletter-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.newsletter-content i {
    font-size: 50px;
    color: var(--color-blue-main);
    margin-bottom: 20px;
}

.newsletter-content h2 {
    font-size: 28px;
    color: var(--color-navy-deep);
    margin-bottom: 15px;
}

.newsletter-content p {
    color: var(--color-gray-700);
    margin-bottom: 25px;
}

.newsletter-form .form-group {
    display: flex;
    gap: 10px;
}

.newsletter-form input {
    flex: 1;
    padding: 14px 20px;
    border: 1px solid var(--color-gray-300);
    border-radius: 8px;
    font-size: 15px;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-blue-main);
    box-shadow: 0 0 0 3px rgba(15, 124, 193, 0.12);
}

.newsletter-form button {
    white-space: nowrap;
}

.form-note {
    font-size: 12px;
    margin-top: 12px;
    color: var(--color-gray-700);
}

/* --- Animation --- */
.insight-card {
    animation: fadeInUp 0.4s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .insights-hero {
        padding: 100px 0 60px;
    }
    .insights-hero .hero-title {
        font-size: 38px;
    }
    .insights-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

@media (max-width: 768px) {
    .insights-hero {
        padding: 80px 0 50px;
    }
    .insights-hero .hero-title {
        font-size: 28px;
    }
    .insights-hero .hero-subtitle {
        font-size: 16px;
    }
    .filter-btn {
        padding: 8px 18px;
        font-size: 13px;
    }
    .insights-grid {
        grid-template-columns: 1fr;
    }
    .newsletter-form .form-group {
        flex-direction: column;
    }
    .newsletter-form button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .insights-hero {
        padding: 70px 0 40px;
    }
    .filter-tabs {
        gap: 10px;
    }
    .filter-btn {
        padding: 6px 14px;
        font-size: 12px;
    }
    .insight-meta {
        font-size: 11px;
        gap: 10px;
    }
}

/* Terahealth Insights color completion */
body.page-insights,
body.page-insights h1,
body.page-insights h2,
body.page-insights h3,
body.page-insights h4,
body.page-insights .hero-title,
body.page-insights .insight-content h3,
body.page-insights .newsletter-content h2,
body.page-insights .no-results h3,
body.page-insights .page-breadcrumb .breadcrumb .current {
    color: var(--color-navy-deep);
}

body.page-insights .main-nav .nav-menu a {
    color: var(--color-navy-deep);
}

body.page-insights .main-nav .nav-menu a:hover,
body.page-insights .main-nav .nav-menu > li > a[href="insights.html"],
body.page-insights .main-nav .nav-menu li.menu-item-has-children:hover > a,
body.page-insights .main-nav .nav-menu .sub-menu li a:hover,
body.page-insights .page-breadcrumb .breadcrumb a,
body.page-insights .btn-link {
    color: var(--color-blue-main);
}

body.page-insights .footer-col a {
    color: var(--color-blue-link);
}

body.page-insights .main-nav .nav-menu a::after {
    background: var(--color-blue-main);
}

body.page-insights .main-nav .nav-menu .sub-menu {
    border-top-color: var(--color-blue-main);
}

body.page-insights .btn-primary,
body.page-insights .header-actions .btn-primary,
body.page-insights .newsletter-form .btn-primary {
    background: var(--color-blue-main);
    border-color: var(--color-blue-main);
    color: #fff;
}

body.page-insights .btn-primary:hover,
body.page-insights .header-actions .btn-primary:hover,
body.page-insights .newsletter-form .btn-primary:hover {
    background: #0B6AA5;
    border-color: #0B6AA5;
}

body.page-insights .btn-link:hover,
body.page-insights .page-breadcrumb .breadcrumb a:hover,
body.page-insights .footer-legal a:hover {
    color: var(--color-navy-deep);
}

body.page-insights .footer-col a:hover {
    color: #fff;
}

body.page-insights .insight-category.product-guidance,
body.page-insights .insight-category.oral-health {
    background: var(--color-blue-main);
}

body.page-insights .insight-category.ingredients {
    background: var(--color-navy-deep);
}

body.page-insights .insight-category.decision-guides {
    background: #3A3A3A;
}

body.page-insights .insight-category.partners {
    background: #0B6AA5;
}

body.page-insights .filter-btn {
    color: var(--color-navy-deep);
}

body.page-insights .filter-btn:hover {
    border-color: var(--color-blue-main);
    background: #fff;
    color: var(--color-blue-main);
}

body.page-insights .filter-btn.active {
    background: var(--color-blue-main);
    border-color: var(--color-blue-main);
    color: #fff;
}

body.page-insights .insight-card:hover {
    border-color: var(--color-blue-main);
}

body.page-insights .site-footer {
    background: var(--color-navy-deep);
}

body.page-insights .site-footer h4,
body.page-insights .site-footer p,
body.page-insights .site-footer li,
body.page-insights .site-footer .footer-bottom p {
    color: #fff;
}

body.page-insights .newsletter-form input:focus {
    border-color: var(--color-blue-main);
    box-shadow: 0 0 0 3px rgba(15, 124, 193, 0.12);
}



/* Terahealth theme restoration */
body.page-insights .site-header {
    border-top-color: var(--color-blue-main);
}

body.page-insights .logo a::after {
    display: none;
}

.insights-hero {
    background: linear-gradient(135deg, var(--color-gray-100) 0%, #ffffff 100%);
    color: var(--color-navy-deep);
}

.insights-hero::after {
    border-color: var(--color-blue-main);
    opacity: 0.14;
}

.hero-badge,
.filter-btn.active,
body.page-insights .btn-primary,
body.page-insights .header-actions .btn-primary,
body.page-insights .newsletter-form .btn-primary {
    background: var(--color-blue-main);
    border-color: var(--color-blue-main);
    color: #ffffff;
}

.insights-hero .hero-title,
.insight-content h3,
.newsletter-content h2,
.no-results h3,
body.page-insights,
body.page-insights h1,
body.page-insights h2,
body.page-insights h3,
body.page-insights h4,
body.page-insights .hero-title,
body.page-insights .insight-content h3,
body.page-insights .newsletter-content h2,
body.page-insights .no-results h3,
body.page-insights .page-breadcrumb .breadcrumb .current {
    color: var(--color-navy-deep);
}

.filter-btn:hover {
    border-color: var(--color-blue-main);
    background: var(--color-blue-light);
    color: var(--color-blue-main);
}

.insight-category.oral-health,
.insight-category.product-guidance,
body.page-insights .insight-category.product-guidance,
body.page-insights .insight-category.oral-health {
    background: var(--color-blue-main);
}

.insight-category.ingredients,
body.page-insights .insight-category.ingredients {
    background: var(--color-navy-light);
}

.insight-category.decision-guides,
body.page-insights .insight-category.decision-guides {
    background: var(--color-navy-deep);
}

.insight-category.partners,
body.page-insights .insight-category.partners {
    background: var(--color-blue-main);
}

.btn-link,
body.page-insights .main-nav .nav-menu a:hover,
body.page-insights .main-nav .nav-menu > li > a[href="insights.html"],
body.page-insights .main-nav .nav-menu li.menu-item-has-children:hover > a,
body.page-insights .main-nav .nav-menu .sub-menu li a:hover,
body.page-insights .page-breadcrumb .breadcrumb a,
body.page-insights .btn-link {
    color: var(--color-blue-main);
}

body.page-insights .footer-col a {
    color: var(--color-blue-link);
}

.btn-link:hover,
body.page-insights .btn-link:hover,
body.page-insights .page-breadcrumb .breadcrumb a:hover,
body.page-insights .footer-legal a:hover {
    color: var(--color-navy-deep);
}

body.page-insights .footer-col a:hover {
    color: #fff;
}

body.page-insights .main-nav .nav-menu a::after,
body.page-insights .main-nav .nav-menu > li > a[href="insights.html"]::after {
    background: var(--color-blue-main);
}

body.page-insights .main-nav .nav-menu .sub-menu {
    border-top-color: var(--color-blue-main);
}

body.page-insights .main-nav .nav-menu .sub-menu li a:hover {
    background: var(--color-blue-light);
    color: var(--color-blue-main);
}

body.page-insights .btn-primary:hover,
body.page-insights .header-actions .btn-primary:hover,
body.page-insights .newsletter-form .btn-primary:hover {
    background: #0B6AA5;
    border-color: #0B6AA5;
}

.newsletter-section {
    background: var(--color-blue-light);
}

.newsletter-content i {
    color: var(--color-blue-main);
}

.newsletter-form input:focus,
body.page-insights .newsletter-form input:focus {
    border-color: var(--color-blue-main);
    box-shadow: 0 0 0 3px rgba(15, 124, 193, 0.12);
}

body.page-insights .filter-btn {
    color: var(--color-navy-deep);
}

body.page-insights .filter-btn:hover {
    border-color: var(--color-blue-main);
    background: var(--color-blue-light);
    color: var(--color-blue-main);
}

body.page-insights .filter-btn.active {
    background: var(--color-blue-main);
    border-color: var(--color-blue-main);
    color: #ffffff;
}

body.page-insights .insight-card:hover {
    border-color: var(--color-blue-main);
}

body.page-insights .site-footer {
    background: var(--color-navy-deep);
}

body.page-insights .site-footer h4,
body.page-insights .site-footer p,
body.page-insights .site-footer li,
body.page-insights .site-footer .footer-bottom p {
    color: #ffffff;
}
/* Premium Insights hero with education-focused visual */
body.page-insights .insights-hero {
    position: relative;
    isolation: isolate;
    min-height: 460px;
    display: flex;
    align-items: center;
    background:
        linear-gradient(90deg, rgba(7, 38, 68, 0.78) 0%, rgba(15, 124, 193, 0.48) 46%, rgba(255, 255, 255, 0.12) 100%),
        url("../images/insights-banner.webp") center center / cover no-repeat;
    padding: 118px 0 90px;
    text-align: center;
    color: #fff;
}

body.page-insights .insights-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(7, 38, 68, 0.16));
    border: 0;
    border-radius: 0;
    width: auto;
    height: auto;
    opacity: 1;
}

body.page-insights .insights-hero .container {
    max-width: 920px;
}

body.page-insights .insights-hero .hero-title {
    color: #fff;
    font-size: 52px;
    line-height: 1.12;
    margin-bottom: 18px;
}

body.page-insights .insights-hero .hero-subtitle {
    color: rgba(255, 255, 255, 0.94);
    max-width: 760px;
    font-size: 19px;
    line-height: 1.65;
}

body.page-insights .insights-hero .hero-badge {
    color: #fff !important;
}

@media (max-width: 992px) {
    body.page-insights .insights-hero {
        min-height: 420px;
        padding: 96px 0 70px;
        background-position: center center;
    }

    body.page-insights .insights-hero .hero-title {
        font-size: 42px;
    }
}

@media (max-width: 768px) {
    body.page-insights .insights-hero {
        min-height: 390px;
        padding: 82px 0 56px;
        background-position: 46% center;
    }

    body.page-insights .insights-hero .hero-title {
        font-size: 34px;
    }

    body.page-insights .insights-hero .hero-subtitle {
        font-size: 16px;
    }
}

/* Card system alignment: editorial cards. */
body.page-insights .insight-card {
    border: 1px solid var(--card-border);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
}

body.page-insights .insight-card:hover {
    transform: translateY(var(--card-hover-lift));
    box-shadow: var(--card-shadow-hover);
    border-color: rgba(15, 124, 193, 0.28);
}

body.page-insights .insight-image {
    background: var(--card-media-bg);
}
/* Final public UI: hide editorial overline labels across all pages. */
.hero-badge,
.section-kicker,
.about-eyebrow,
.partners-hero .badge-highlight {
    display: none !important;
}


/* Insights final alignment with Home resource system. */
body.page-insights .insights-hero {
    min-height: 460px;
    display: flex;
    align-items: center;
    padding: 108px 0 86px;
    text-align: left;
}

body.page-insights .insights-hero .container {
    width: 100%;
    max-width: var(--container-max);
    text-align: left;
}

body.page-insights .insights-hero .hero-title {
    max-width: 760px;
    margin-left: 0;
    margin-right: 0;
    font-size: clamp(40px, 4vw, 54px);
}

body.page-insights .insights-hero .hero-subtitle {
    max-width: 760px;
    margin-left: 0;
    margin-right: 0;
}

body.page-insights .insights-hero .hero-actions {
    display: flex;
    justify-content: flex-start;
    margin-top: 28px;
}

body.page-insights .filter-section {
    background: #fff;
    padding: 28px 0;
}

body.page-insights .filter-tabs {
    max-width: 1040px;
    margin: 0 auto;
    gap: 10px;
}

body.page-insights .filter-btn {
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    box-shadow: 0 10px 24px rgba(10, 37, 64, 0.05);
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease, color 180ms ease;
}

body.page-insights .filter-btn:hover,
body.page-insights .filter-btn.active {
    background: var(--color-blue-main);
    border-color: var(--color-blue-main);
    color: #fff;
    box-shadow: 0 12px 28px rgba(15, 124, 193, 0.16);
    transform: translateY(-1px);
}

body.page-insights .insights-grid-section {
    background: var(--color-gray-100);
    padding: 76px 0;
}

body.page-insights .insights-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

body.page-insights .insight-card {
    overflow: hidden;
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

body.page-insights .insight-image {
    height: 210px;
}

body.page-insights .insight-category {
    border-radius: 8px;
    font-size: 11px;
    letter-spacing: 0.02em;
}

body.page-insights .insight-content {
    padding: var(--card-padding);
}

body.page-insights .insight-content h3 {
    font-size: 20px;
    line-height: 1.3;
}

body.page-insights .no-results.is-hidden {
    display: none;
}

body.page-insights .newsletter-section {
    background: var(--color-blue-main);
    color: #fff;
    padding: 72px 0;
}

body.page-insights .newsletter-content i,
body.page-insights .newsletter-content h2,
body.page-insights .newsletter-content p,
body.page-insights .newsletter-content .form-note {
    color: #fff;
}

body.page-insights .newsletter-form .form-group {
    align-items: stretch;
}

body.page-insights .newsletter-form input {
    background: rgba(255, 255, 255, 0.86);
    border-color: rgba(255, 255, 255, 0.72);
}

body.page-insights .newsletter-form .btn-primary {
    background: rgba(255, 255, 255, 0.74);
    border: 1px solid rgba(255, 255, 255, 0.72);
    color: var(--color-navy-deep);
    box-shadow: 0 14px 34px rgba(5, 5, 5, 0.12);
    backdrop-filter: blur(12px);
}

body.page-insights .newsletter-form .btn-primary:hover {
    background: rgba(255, 255, 255, 0.92);
    color: var(--color-navy-deep);
}

@media (max-width: 992px) {
    body.page-insights .insights-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    body.page-insights .insights-hero {
        min-height: 390px;
        padding: 78px 0 58px;
        background-position: 46% center;
    }

    body.page-insights .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
    }

    body.page-insights .filter-btn {
        flex: 0 0 auto;
    }

    body.page-insights .insights-grid {
        grid-template-columns: 1fr;
    }
}
.insight-content h3 a { color: inherit; text-decoration: none; }
.insight-content h3 a:hover { color: var(--color-blue-main); }
.insight-image-link { display: block; width: 100%; height: 100%; }
.insight-image-link img { display: block; }