/* ============================================
   Art Show Hub — Knowledge Base Styles
   Netflix-inspired: sticky header, dark hero,
   topic cards, live search, fully responsive
   ============================================ */

/* ============================================
   1. Variables & Reset
   ============================================ */
:root {
    --kb-font: var(--font-ui);

    /* Brand */
    --kb-cyan: #15b7ff;
    --kb-pink: #fc9cff;
    --kb-red: #ff6464;
    --kb-yellow: #ffe473;

    /* Dark palette (hero, header) */
    --kb-dark: #0a1628;
    --kb-dark-mid: #0d2847;
    --kb-dark-light: #0f3060;

    /* Light palette (body) */
    --kb-bg: #f8fafc;
    --kb-white: #ffffff;
    --kb-text: #1a1a2e;
    --kb-text-light: #4a4a68;
    --kb-text-muted: #7a7a96;
    --kb-border: #e2e8f0;
    --kb-border-light: #f1f5f9;

    /* Sizing */
    --kb-max-width: 1200px;
    --kb-header-height: 64px;
    --kb-radius: 12px;
    --kb-radius-sm: 8px;
    --kb-radius-lg: 16px;

    /* Transitions */
    --kb-transition: 200ms ease;
    --kb-transition-slow: 350ms ease;

    /* Shadows */
    --kb-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --kb-shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --kb-shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --kb-shadow-search: 0 12px 48px rgba(0,0,0,0.15);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--kb-font);
    color: var(--kb-text);
    background: var(--kb-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}


/* ============================================
   2. Sticky Header
   ============================================ */
.kb-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--kb-dark);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    height: var(--kb-header-height);
    transition: box-shadow var(--kb-transition);
}

.kb-header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.kb-header-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 24px;
}

.kb-header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    color: #fff;
    text-decoration: none;
}

.kb-header-logo img {
    height: 28px;
}

.kb-header-divider {
    width: 1px;
    height: 20px;
    background: rgba(255,255,255,0.25);
}

.kb-header-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.02em;
}

/* Header search (compact, in the header bar) */
.kb-header-search {
    flex: 1;
    max-width: 480px;
    position: relative;
}

.kb-search-compact {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--kb-radius-sm);
    padding: 0 12px;
    height: 38px;
    transition: all var(--kb-transition);
}

.kb-search-compact:focus-within {
    background: rgba(255,255,255,0.15);
    border-color: var(--kb-cyan);
    box-shadow: 0 0 0 3px rgba(21,183,255,0.15);
}

.kb-search-compact-icon {
    flex-shrink: 0;
    color: rgba(255,255,255,0.5);
}

.kb-search-compact input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: #fff;
    font-family: var(--kb-font);
    font-size: 0.9rem;
    padding: 0 8px;
}

.kb-search-compact input::placeholder {
    color: rgba(255,255,255,0.4);
}

.kb-header-nav {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.kb-header-link {
    color: rgba(255,255,255,0.7);
    font-size: 0.88rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--kb-radius-sm);
    transition: all var(--kb-transition);
    white-space: nowrap;
}

.kb-header-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

.kb-header-link-primary {
    color: #fff;
    background: rgba(21,183,255,0.2);
    border: 1px solid rgba(21,183,255,0.3);
}

.kb-header-link-primary:hover {
    background: rgba(21,183,255,0.35);
}

/* Mobile hamburger — hidden on desktop */
.kb-mobile-toggle {
    display: none !important;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    flex-shrink: 0;
    -webkit-appearance: none;
    appearance: none;
}

.kb-mobile-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: rgba(255,255,255,0.8);
    border-radius: 2px;
    transition: all var(--kb-transition);
}

/* Mobile overlay — hidden on desktop */
.kb-mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1100;
}

/* Mobile slide-out nav — hidden on desktop */
.kb-mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100%;
    background: var(--kb-dark);
    z-index: 1200;
    transition: right var(--kb-transition-slow);
    flex-direction: column;
    border-left: 1px solid rgba(255,255,255,0.1);
}

.kb-mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.kb-mobile-nav-title {
    color: rgba(255,255,255,0.5);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.kb-mobile-close {
    background: none;
    border: none;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: all var(--kb-transition);
}

.kb-mobile-close:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

.kb-mobile-nav-links {
    display: flex;
    flex-direction: column;
    padding: 12px 0;
}

.kb-mobile-nav-links a {
    display: block;
    padding: 14px 24px;
    color: rgba(255,255,255,0.8);
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--kb-transition);
    border-left: 3px solid transparent;
}

.kb-mobile-nav-links a:hover {
    color: #fff;
    background: rgba(255,255,255,0.05);
    border-left-color: var(--kb-cyan);
}

.kb-mobile-nav-primary {
    color: var(--kb-cyan) !important;
    margin-top: 8px;
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 20px !important;
}


/* ============================================
   3. Search Results Dropdown (shared by hero & header)
   ============================================ */
.kb-search-results,
.kb-search-results-dropdown {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-top: 6px;
    background: var(--kb-white);
    border-radius: var(--kb-radius);
    box-shadow: var(--kb-shadow-search);
    border: 1px solid var(--kb-border);
    display: none;
    z-index: 9999;
    text-align: left;
}


.kb-search-results.active,
.kb-search-results-dropdown.active {
    display: block;
}

.kb-search-result-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    cursor: pointer;
    transition: background var(--kb-transition);
    border-bottom: 1px solid var(--kb-border-light);
    text-decoration: none;
    color: var(--kb-text);
}

.kb-search-result-item:last-child {
    border-bottom: none;
}

.kb-search-result-item:hover,
.kb-search-result-item.kb-result-active {
    background: var(--kb-border-light);
}

.kb-search-result-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(21,183,255,0.1), rgba(252,156,255,0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--kb-cyan);
}

.kb-search-result-body {
    flex: 1;
    min-width: 0;
}

.kb-search-result-category {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--kb-cyan);
    margin-bottom: 2px;
}

.kb-search-result-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--kb-text);
    line-height: 1.3;
}

.kb-search-result-excerpt {
    font-size: 0.82rem;
    color: var(--kb-text-muted);
    margin-top: 2px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* "See all results" link */
.kb-search-see-more {
    display: block;
    padding: 12px 18px;
    background: var(--kb-border-light);
    border-top: 1px solid var(--kb-border);
    color: var(--kb-cyan);
    font-family: var(--kb-font);
    font-size: 0.88rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: background var(--kb-transition);
}

.kb-search-see-more:hover {
    background: var(--kb-border);
    color: var(--kb-cyan);
}

.kb-search-no-results {
    padding: 24px 18px;
    text-align: center;
    color: var(--kb-text-muted);
    font-size: 0.9rem;
}

.kb-search-loading {
    padding: 20px 18px;
    text-align: center;
    color: var(--kb-text-muted);
    font-size: 0.85rem;
}


/* ============================================
   4. Hero Section
   ============================================ */
.kb-hero {
    background: linear-gradient(180deg, var(--kb-dark) 0%, var(--kb-dark-mid) 100%);
    padding: 80px 24px 100px;
    text-align: center;
    position: relative;
}

/* Subtle decorative gradient orbs */
.kb-hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(21,183,255,0.08) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    pointer-events: none;
}

.kb-hero::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(252,156,255,0.06) 0%, transparent 70%);
    bottom: -200px;
    left: -100px;
    pointer-events: none;
}

.kb-hero-inner {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.kb-hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 12px;
}

.kb-hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.6);
    font-weight: 400;
    margin-bottom: 36px;
    line-height: 1.5;
}

/* Hero Search Box */
.kb-hero-search {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    z-index: 50;
}

.kb-search-box {
    display: flex;
    align-items: center;
    background: var(--kb-white);
    border-radius: var(--kb-radius);
    padding: 0 20px;
    height: 60px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2), 0 0 0 1px rgba(255,255,255,0.1);
    transition: all var(--kb-transition);
}

.kb-search-box:focus-within {
    box-shadow: 0 8px 40px rgba(0,0,0,0.25), 0 0 0 3px rgba(21,183,255,0.3);
    transform: translateY(-1px);
}

.kb-search-icon {
    flex-shrink: 0;
    color: var(--kb-text-muted);
}

.kb-search-box input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-family: var(--kb-font);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--kb-text);
    padding: 0 14px;
    height: 100%;
}

.kb-search-box input::placeholder {
    color: var(--kb-text-muted);
    font-weight: 400;
}

/* Suggestion chips */
.kb-hero-suggestions {
    margin-top: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.kb-suggestion-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
    font-weight: 500;
}

.kb-suggestion-chip {
    display: inline-block;
    padding: 5px 14px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 100px;
    color: rgba(255,255,255,0.7);
    font-size: 0.82rem;
    font-weight: 500;
    transition: all var(--kb-transition);
}

.kb-suggestion-chip:hover {
    background: rgba(21,183,255,0.15);
    border-color: rgba(21,183,255,0.3);
    color: var(--kb-cyan);
}


/* ============================================
   5. Topic Cards Section
   ============================================ */
.kb-topics {
    padding: 64px 24px 48px;
}

.kb-topics-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
}

.kb-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--kb-text);
    margin-bottom: 28px;
    letter-spacing: -0.01em;
}

.kb-topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.kb-topic-card {
    background: var(--kb-white);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    padding: 28px 24px;
    text-decoration: none;
    color: var(--kb-text);
    transition: all var(--kb-transition);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.kb-topic-card:hover {
    border-color: var(--kb-cyan);
    box-shadow: var(--kb-shadow-md);
    transform: translateY(-2px);
}

.kb-topic-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--kb-radius-sm);
    background: linear-gradient(135deg, rgba(21,183,255,0.08), rgba(252,156,255,0.08));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--kb-cyan);
    margin-bottom: 4px;
    transition: all var(--kb-transition-slow);
}

.kb-topic-card:hover .kb-topic-icon {
    background: linear-gradient(135deg, rgba(21,183,255,0.15), rgba(252,156,255,0.15));
    transform: scale(1.05);
}

.kb-topic-name {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.3;
}

.kb-topic-desc {
    font-size: 0.88rem;
    color: var(--kb-text-light);
    line-height: 1.5;
    flex: 1;
}

.kb-topic-count {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--kb-cyan);
    margin-top: 4px;
}


/* ============================================
   6. Popular Articles Section
   ============================================ */
.kb-popular {
    padding: 16px 24px 64px;
}

.kb-popular-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
}

.kb-article-list {
    background: var(--kb-white);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    overflow: hidden;
}

.kb-article-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--kb-border-light);
    text-decoration: none;
    color: var(--kb-text);
    transition: background var(--kb-transition);
}

.kb-article-row:last-child {
    border-bottom: none;
}

.kb-article-row:hover {
    background: var(--kb-border-light);
}

.kb-article-row-content {
    flex: 1;
    min-width: 0;
}

.kb-article-row-category {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--kb-cyan);
    margin-bottom: 4px;
}

.kb-article-row-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 4px;
}

.kb-article-row-excerpt {
    font-size: 0.85rem;
    color: var(--kb-text-muted);
    line-height: 1.4;
}

.kb-article-row-arrow {
    flex-shrink: 0;
    color: var(--kb-text-muted);
    transition: all var(--kb-transition);
}

.kb-article-row:hover .kb-article-row-arrow {
    color: var(--kb-cyan);
    transform: translateX(3px);
}


/* ============================================
   7. Contact CTA Section
   ============================================ */
.kb-contact-cta {
    padding: 64px 24px;
    background: linear-gradient(180deg, var(--kb-bg) 0%, #eef2f7 100%);
}

.kb-contact-cta-inner {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}

.kb-contact-cta h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--kb-text);
}

.kb-contact-cta p {
    font-size: 1rem;
    color: var(--kb-text-light);
    margin-bottom: 24px;
}

.kb-cta-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 32px;
    background: var(--kb-dark);
    color: #fff;
    font-family: var(--kb-font);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--kb-radius-sm);
    transition: all var(--kb-transition);
    text-decoration: none;
}

.kb-cta-btn:hover {
    background: var(--kb-dark-mid);
    transform: translateY(-1px);
    box-shadow: var(--kb-shadow-md);
}


/* ============================================
   8. Breadcrumb
   ============================================ */
.kb-breadcrumb {
    background: var(--kb-white);
    border-bottom: 1px solid var(--kb-border);
    padding: 14px 24px;
}

.kb-breadcrumb-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--kb-text-muted);
    flex-wrap: wrap;
}

.kb-breadcrumb a {
    color: var(--kb-cyan);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--kb-transition);
}

.kb-breadcrumb a:hover {
    color: var(--kb-dark-mid);
}

.kb-breadcrumb svg {
    flex-shrink: 0;
    opacity: 0.5;
}


/* ============================================
   9. Category Page
   ============================================ */
.kb-category-header {
    background: linear-gradient(180deg, var(--kb-dark) 0%, var(--kb-dark-mid) 100%);
    padding: 48px 24px;
    text-align: center;
}

.kb-category-header-inner {
    max-width: 640px;
    margin: 0 auto;
}

.kb-category-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}

.kb-category-header p {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.6);
}

.kb-category-articles {
    padding: 32px 24px 48px;
}

.kb-category-articles-inner {
    max-width: 800px;
    margin: 0 auto;
    background: var(--kb-white);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    overflow: hidden;
}

/* Other categories footer */
.kb-other-categories {
    padding: 16px 24px 64px;
}

.kb-other-categories-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
}

.kb-other-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.kb-other-card {
    background: var(--kb-white);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius-sm);
    padding: 16px 20px;
    text-decoration: none;
    transition: all var(--kb-transition);
}

.kb-other-card:hover {
    border-color: var(--kb-cyan);
    box-shadow: var(--kb-shadow-sm);
}

.kb-other-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--kb-text);
    margin-bottom: 2px;
}

.kb-other-card span {
    font-size: 0.78rem;
    color: var(--kb-text-muted);
}


/* ============================================
   10. Article Page
   ============================================ */
.kb-article {
    padding: 40px 24px 80px;
}

.kb-article-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 48px;
    align-items: start;
}

.kb-article-meta {
    margin-bottom: 16px;
}

.kb-article-category-badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, rgba(21,183,255,0.1), rgba(252,156,255,0.1));
    color: var(--kb-cyan);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-radius: 100px;
    text-decoration: none;
    transition: all var(--kb-transition);
}

.kb-article-category-badge:hover {
    background: linear-gradient(135deg, rgba(21,183,255,0.18), rgba(252,156,255,0.18));
}

.kb-article-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--kb-text);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.kb-article-excerpt {
    font-size: 1.05rem;
    color: var(--kb-text-light);
    line-height: 1.5;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--kb-border);
}

/* Article Body Typography */
.kb-article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--kb-text);
    margin: 32px 0 12px;
    letter-spacing: -0.01em;
}

.kb-article-body h2:first-child {
    margin-top: 0;
}

.kb-article-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--kb-text);
    margin: 24px 0 8px;
}

.kb-article-body p {
    margin-bottom: 14px;
    line-height: 1.7;
    color: var(--kb-text-light);
}

.kb-article-body ul,
.kb-article-body ol {
    margin: 0 0 16px 24px;
    color: var(--kb-text-light);
}

.kb-article-body li {
    margin-bottom: 6px;
    line-height: 1.6;
}

.kb-article-body strong {
    color: var(--kb-text);
    font-weight: 600;
}

.kb-article-body code {
    background: var(--kb-border-light);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.88em;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    color: var(--kb-dark-mid);
}

.kb-article-body pre {
    background: var(--kb-dark);
    color: rgba(255,255,255,0.9);
    padding: 16px 20px;
    border-radius: var(--kb-radius-sm);
    overflow-x: auto;
    margin-bottom: 16px;
    font-size: 0.88rem;
    line-height: 1.6;
}

.kb-article-body pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    color: inherit;
    font-size: inherit;
}

/* Callout Boxes */
.kb-callout {
    padding: 16px 20px;
    border-radius: var(--kb-radius-sm);
    margin: 20px 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

.kb-callout strong {
    display: block;
    margin-bottom: 4px;
}

.kb-callout-info {
    background: rgba(21,183,255,0.08);
    border-left: 3px solid var(--kb-cyan);
    color: var(--kb-text-light);
}

.kb-callout-info strong {
    color: var(--kb-cyan);
}

.kb-callout-success {
    background: rgba(16,185,129,0.08);
    border-left: 3px solid #10b981;
    color: var(--kb-text-light);
}

.kb-callout-success strong {
    color: #10b981;
}

.kb-callout-warning {
    background: rgba(245,158,11,0.08);
    border-left: 3px solid #f59e0b;
    color: var(--kb-text-light);
}

.kb-callout-warning strong {
    color: #f59e0b;
}


/* Article Sidebar */
.kb-article-sidebar {
    position: sticky;
    top: calc(var(--kb-header-height) + 24px);
}

.kb-sidebar-section {
    background: var(--kb-white);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    padding: 20px;
    margin-bottom: 16px;
}

.kb-sidebar-section h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--kb-text);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.kb-related-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.kb-related-list li {
    margin-bottom: 8px;
}

.kb-related-list a {
    font-size: 0.9rem;
    color: var(--kb-text-light);
    text-decoration: none;
    transition: color var(--kb-transition);
    display: block;
    line-height: 1.4;
}

.kb-related-list a:hover {
    color: var(--kb-cyan);
}

.kb-sidebar-help p {
    font-size: 0.85rem;
    color: var(--kb-text-muted);
    line-height: 1.5;
    margin-bottom: 12px;
}

.kb-sidebar-btn {
    display: block;
    text-align: center;
    padding: 10px 16px;
    background: var(--kb-dark);
    color: #fff;
    font-family: var(--kb-font);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--kb-radius-sm);
    text-decoration: none;
    transition: all var(--kb-transition);
}

.kb-sidebar-btn:hover {
    background: var(--kb-dark-mid);
}


/* ============================================
   10b. Search Results Page
   ============================================ */
.kb-search-page-header {
    background: linear-gradient(180deg, var(--kb-dark) 0%, var(--kb-dark-mid) 100%);
    padding: 40px 24px 48px;
    text-align: center;
}

.kb-search-page-header-inner {
    max-width: 640px;
    margin: 0 auto;
}

.kb-search-page-header h1 {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}

.kb-search-page-query {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 24px;
}

.kb-search-page-query strong {
    color: var(--kb-cyan);
}

.kb-search-page-box {
    max-width: 500px;
    margin: 0 auto;
}

.kb-search-page-input-wrap {
    display: flex;
    align-items: center;
    background: var(--kb-white);
    border-radius: var(--kb-radius-sm);
    padding: 0 4px 0 14px;
    height: 48px;
    gap: 8px;
}

.kb-search-page-input-wrap svg {
    flex-shrink: 0;
    color: var(--kb-text-muted);
}

.kb-search-page-input-wrap input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-family: var(--kb-font);
    font-size: 1rem;
    color: var(--kb-text);
    padding: 0 4px;
}

.kb-search-page-input-wrap button {
    flex-shrink: 0;
    padding: 8px 20px;
    background: var(--kb-dark);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-family: var(--kb-font);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--kb-transition);
}

.kb-search-page-input-wrap button:hover {
    background: var(--kb-dark-mid);
}

.kb-search-page-results {
    padding: 32px 24px 64px;
}

.kb-search-page-results-inner {
    max-width: 800px;
    margin: 0 auto;
}

.kb-search-page-count {
    font-size: 0.9rem;
    color: var(--kb-text-muted);
    margin-bottom: 16px;
    font-weight: 500;
}

.kb-search-page-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--kb-text-muted);
}

.kb-search-page-empty svg {
    margin-bottom: 16px;
    opacity: 0.3;
}

.kb-search-page-empty h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--kb-text);
    margin-bottom: 8px;
}

.kb-search-page-empty p {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.kb-search-page-empty-hint a {
    color: var(--kb-cyan);
    font-weight: 500;
}

@media (max-width: 640px) {
    .kb-search-page-header {
        padding: 28px 16px 36px;
    }

    .kb-search-page-header h1 {
        font-size: 1.4rem;
    }

    .kb-search-page-results {
        padding: 24px 16px 48px;
    }
}


/* ============================================
   11. Footer
   ============================================ */
.kb-footer {
    background: var(--kb-dark);
    padding: 48px 24px;
    color: rgba(255,255,255,0.5);
}

.kb-footer-inner {
    max-width: var(--kb-max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.kb-footer-brand img {
    height: 22px;
    margin-bottom: 8px;
    opacity: 0.6;
}

.kb-footer-brand p {
    font-size: 0.85rem;
}

.kb-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
}

.kb-footer-links a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    transition: color var(--kb-transition);
}

.kb-footer-links a:hover {
    color: var(--kb-cyan);
}

.kb-footer-copy {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.3);
}


/* ============================================
   12. Responsive — Tablet
   ============================================ */
@media (max-width: 900px) {
    .kb-header-nav {
        display: none;
    }

    .kb-mobile-toggle {
        display: flex !important;
    }

    .kb-mobile-nav {
        display: flex;
    }

    .kb-mobile-overlay {
        display: none;
    }

    .kb-mobile-nav.active {
        right: 0;
    }

    .kb-mobile-overlay.active {
        display: block;
    }

    .kb-article-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .kb-article-sidebar {
        position: static;
    }

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


/* ============================================
   13. Responsive — Mobile
   ============================================ */
@media (max-width: 640px) {
    /* Header */
    .kb-header-inner {
        padding: 0 16px;
        gap: 12px;
    }

    .kb-header-label {
        display: none;
    }

    .kb-header-divider {
        display: none;
    }

    .kb-header-search {
        max-width: none;
    }

    .kb-header-link {
        padding: 6px 10px;
        font-size: 0.82rem;
    }

    /* Hero */
    .kb-hero {
        padding: 48px 16px 64px;
    }

    .kb-hero-title {
        font-size: 2rem;
    }

    .kb-hero-subtitle {
        font-size: 1rem;
        margin-bottom: 24px;
    }

    .kb-search-box {
        height: 52px;
        padding: 0 14px;
    }

    .kb-search-box input {
        font-size: 1rem;
    }

    .kb-search-shortcut {
        display: none;
    }

    .kb-hero-suggestions {
        gap: 6px;
    }

    .kb-suggestion-chip {
        font-size: 0.78rem;
        padding: 4px 10px;
    }

    /* Topics */
    .kb-topics {
        padding: 40px 16px 32px;
    }

    .kb-topic-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .kb-topic-card {
        padding: 20px 18px;
        flex-direction: row;
        align-items: center;
        gap: 16px;
    }

    .kb-topic-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .kb-topic-icon svg {
        width: 22px;
        height: 22px;
    }

    .kb-topic-desc {
        display: none;
    }

    .kb-topic-count {
        margin-top: 0;
    }

    /* Popular articles */
    .kb-popular {
        padding: 8px 16px 48px;
    }

    .kb-article-row {
        padding: 16px;
    }

    .kb-article-row-excerpt {
        display: none;
    }

    /* Category page */
    .kb-category-header {
        padding: 32px 16px;
    }

    .kb-category-header h1 {
        font-size: 1.6rem;
    }

    .kb-category-articles {
        padding: 24px 16px 40px;
    }

    .kb-other-categories {
        padding: 8px 16px 48px;
    }

    .kb-other-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .kb-other-card {
        padding: 12px 14px;
    }

    /* Article page */
    .kb-article {
        padding: 24px 16px 48px;
    }

    .kb-article-title {
        font-size: 1.5rem;
    }

    .kb-article-excerpt {
        font-size: 0.95rem;
    }

    .kb-article-body h2 {
        font-size: 1.25rem;
    }

    .kb-article-body h3 {
        font-size: 1.05rem;
    }

    /* Breadcrumb */
    .kb-breadcrumb {
        padding: 12px 16px;
    }

    .kb-breadcrumb-inner {
        font-size: 0.8rem;
    }

    /* Contact CTA */
    .kb-contact-cta {
        padding: 48px 16px;
    }

    .kb-contact-cta h2 {
        font-size: 1.25rem;
    }

    /* Footer */
    .kb-footer {
        padding: 32px 16px;
    }

    .kb-footer-links {
        gap: 16px;
    }
}


/* ============================================
   14. Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* Focus styles */
.kb-search-box input:focus,
.kb-search-compact input:focus {
    outline: none;
}

.kb-topic-card:focus-visible,
.kb-article-row:focus-visible,
.kb-suggestion-chip:focus-visible,
.kb-cta-btn:focus-visible,
.kb-sidebar-btn:focus-visible {
    outline: 2px solid var(--kb-cyan);
    outline-offset: 2px;
}

/* Scrollbar styling for search results */
.kb-search-results::-webkit-scrollbar,
.kb-search-results-dropdown::-webkit-scrollbar {
    width: 6px;
}

.kb-search-results::-webkit-scrollbar-track,
.kb-search-results-dropdown::-webkit-scrollbar-track {
    background: transparent;
}

.kb-search-results::-webkit-scrollbar-thumb,
.kb-search-results-dropdown::-webkit-scrollbar-thumb {
    background: var(--kb-border);
    border-radius: 3px;
}

/* Mobile: 16px input font prevents iOS Safari from auto-zooming on focus.
   Older users especially get disoriented by the zoom-and-reflow jump. */
@media (max-width: 768px) {
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="tel"],
    input[type="search"],
    input[type="url"],
    input[type="number"],
    input[type="date"],
    input[type="datetime-local"],
    input[type="time"],
    input[type="month"],
    textarea,
    select {
        font-size: 16px !important;
    }
}