/**
 * Learning Center Styles
 * 
 * Dark mode design matching the customer service pages
 * Optimized for readability and SEO
 * 
 * @version 1.0.0
 */

/* ===== CSS Variables ===== */
:root {
    --learn-bg: linear-gradient(165deg, #1e3a5f 0%, #0a1929 100%);
    --learn-surface: rgba(255, 255, 255, 0.03);
    --learn-surface-hover: rgba(255, 255, 255, 0.06);
    --learn-border: rgba(255, 255, 255, 0.08);
    --learn-text: #e8e9eb;
    --learn-text-muted: rgba(255, 255, 255, 0.6);
    --learn-accent: #f59e0b;
    --learn-accent-hover: #fbbf24;
    --learn-success: #22c55e;
    --learn-warning: #eab308;
    --learn-info: #3b82f6;
    --learn-radius: 12px;
    --learn-radius-sm: 8px;
    --learn-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* ===== Base Styles ===== */
.learn-page {
    background: linear-gradient(165deg, #1e3a5f 0%, #0a1929 100%);
    color: var(--learn-text);
    min-height: 100vh;
    font-family: var(--csr-font-sans);
    line-height: 1.6;
}

.learn-main {
    padding: 40px 20px 80px;
}

.learn-container {
    max-width: var(--wr-container-max, 1200px);
    margin: 0 auto;
}

.learn-container--article {
    max-width: var(--wr-article-max, 900px);
}

/* ===== Two-Column Article Layout ===== */
.learn-article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 40px;
    align-items: start;
}

.learn-article-layout__main {
    min-width: 0; /* Prevent grid blowout */
}

.learn-article-layout__sidebar {
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

/* Sidebar Styles */
.learn-sidebar {
    background: var(--learn-surface);
    border: 1px solid var(--learn-border);
    border-radius: var(--learn-radius);
    padding: 20px;
}

.learn-sidebar__title {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--learn-text-muted);
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--learn-border);
}

.learn-sidebar__list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.learn-sidebar__item {
    display: flex;
    gap: 12px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--learn-radius-sm);
    text-decoration: none;
    color: var(--learn-text);
    transition: all 0.2s;
    border: 1px solid transparent;
}

.learn-sidebar__item:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--learn-accent);
}

.learn-sidebar__thumb {
    width: 60px;
    height: 45px;
    flex-shrink: 0;
    border-radius: 4px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.2);
}

.learn-sidebar__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.learn-sidebar__content {
    flex: 1;
    min-width: 0;
}

.learn-sidebar__item-title {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.3;
    margin: 0 0 4px;
    color: var(--learn-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.learn-sidebar__meta {
    display: flex;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--learn-text-muted);
}

.learn-sidebar__category {
    color: var(--learn-accent);
}

.learn-sidebar__view-all {
    display: block;
    text-align: center;
    padding: 12px;
    margin-top: 16px;
    color: var(--learn-accent);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    border-top: 1px solid var(--learn-border);
    transition: color 0.2s;
}

.learn-sidebar__view-all:hover {
    color: var(--learn-accent-hover);
}

/* Responsive: Stack on smaller screens */
@media (max-width: 1024px) {
    .learn-article-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .learn-article-layout__sidebar {
        position: static;
        max-height: none;
        order: 2; /* Move sidebar below main content on mobile */
    }
    
    .learn-sidebar__list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 12px;
    }
}

/* ===== Hero Section ===== */
.learn-hero {
    text-align: center;
    padding: 40px 20px 50px;
    margin-bottom: 40px;
}

.learn-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin: 0 0 12px;
    letter-spacing: -0.02em;
}

.learn-hero__subtitle {
    font-size: 1.2rem;
    color: var(--learn-text-muted);
    margin: 0 0 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Search Bar ===== */
.learn-search {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: var(--learn-surface);
    border-radius: 50px;
    overflow: hidden;
    border: 1px solid var(--learn-border);
    transition: border-color 0.2s;
}

.learn-search:focus-within {
    border-color: var(--learn-accent);
}

.learn-search__input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 14px 24px;
    font-size: 1rem;
    color: var(--learn-text);
    outline: none;
}

.learn-search__input::placeholder {
    color: var(--learn-text-muted);
}

.learn-search__btn {
    background: var(--learn-accent);
    border: none;
    padding: 14px 20px;
    cursor: pointer;
    color: white;
    transition: background 0.2s;
}

.learn-search__btn:hover {
    background: var(--learn-accent-hover);
}

/* ===== Category Cards ===== */
.learn-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 50px;
}

.learn-category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 24px;
    background: var(--learn-surface);
    border-radius: var(--learn-radius);
    border: 1px solid var(--learn-border);
    text-decoration: none;
    color: var(--learn-text);
    transition: all 0.2s;
    min-width: 140px;
}

.learn-category-card:hover {
    background: var(--learn-surface-hover);
    border-color: var(--learn-accent);
    transform: translateY(-2px);
}

.learn-category-card__icon {
    font-size: 2rem;
}

.learn-category-card__name {
    font-weight: 600;
    font-size: 0.95rem;
}

.learn-category-card__count {
    font-size: 0.8rem;
    color: var(--learn-text-muted);
}

/* ===== Section Headers ===== */
.learn-section {
    margin-bottom: 50px;
}

.learn-section__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--learn-border);
}

.learn-section__header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.learn-section__icon {
    font-size: 1.3rem;
}

.learn-section__more {
    color: var(--learn-accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.learn-section__more:hover {
    color: var(--learn-accent-hover);
}

/* ===== Article Grid ===== */
.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* ===== Article Cards ===== */
.learn-card {
    background: var(--learn-surface);
    border-radius: var(--learn-radius);
    border: 1px solid var(--learn-border);
    overflow: hidden;
    transition: all 0.2s;
}

.learn-card:hover {
    border-color: var(--learn-accent);
    transform: translateY(-2px);
    box-shadow: var(--learn-shadow);
}

.learn-card__image {
    display: block;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.learn-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.learn-card:hover .learn-card__image img {
    transform: scale(1.05);
}

.learn-card__content {
    padding: 20px;
}

.learn-card__meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.8rem;
}

.learn-card__difficulty {
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.7rem;
}

.learn-card__difficulty--beginner {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.learn-card__difficulty--intermediate {
    background: rgba(234, 179, 8, 0.15);
    color: #eab308;
}

.learn-card__difficulty--advanced {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.learn-card__time {
    color: var(--learn-text-muted);
}

.learn-card__title {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 0 0 10px;
    line-height: 1.4;
}

.learn-card__title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.learn-card__title a:hover {
    color: var(--learn-accent);
}

.learn-card__excerpt {
    font-size: 0.9rem;
    color: var(--learn-text-muted);
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.learn-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* ===== Tags ===== */
.learn-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--learn-text-muted);
    text-decoration: none;
    transition: all 0.2s;
}

.learn-tag:hover {
    background: var(--learn-accent);
    color: white;
}

/* ===== Legacy Section ===== */
.learn-section--legacy {
    background: var(--learn-surface);
    padding: 30px;
    border-radius: var(--learn-radius);
    border: 1px solid var(--learn-border);
}

.learn-legacy-note {
    color: var(--learn-text-muted);
    margin: 0;
    font-size: 0.95rem;
}

/* ===== Article Page ===== */
.learn-breadcrumb {
    margin-bottom: 30px;
}

.learn-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.9rem;
}

.learn-breadcrumb li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.learn-breadcrumb li:not(:last-child)::after {
    content: '›';
    color: var(--learn-text-muted);
}

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

.learn-breadcrumb a:hover {
    color: var(--learn-accent);
}

.learn-breadcrumb li[aria-current="page"] {
    color: var(--learn-text);
    font-weight: 500;
}

/* ===== Article Content ===== */
.learn-article {
    background: var(--learn-surface);
    border-radius: var(--learn-radius);
    border: 1px solid var(--learn-border);
    overflow: hidden;
}

.learn-article__header {
    padding: 40px 40px 30px;
    border-bottom: 1px solid var(--learn-border);
}

/* ===== Author Sidebar Layout ===== */
.learn-article__header--with-sidebar {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 40px;
    align-items: start;
}

.learn-article__header-content {
    /* Content area next to author sidebar */
}

.learn-author-card {
    background: var(--learn-surface);
    border: 1px solid var(--learn-border);
    border-radius: var(--learn-radius);
    padding: 24px 16px;
    text-align: center;
    position: sticky;
    top: 20px;
}

.learn-author-card__avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 12px;
    overflow: hidden;
    border: 3px solid var(--learn-accent);
    background: var(--learn-surface);
    display: flex;
    align-items: center;
    justify-content: center;
}

.learn-author-card__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.learn-author-card__initials {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--learn-accent);
}

.learn-author-card__name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--learn-text);
    margin-bottom: 4px;
}

.learn-author-card__title {
    font-size: 0.8rem;
    color: var(--learn-accent);
    margin-bottom: 16px;
}

.learn-author-card__meta {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--learn-radius-sm);
    padding: 12px;
    text-align: left;
}

.learn-author-card__meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--learn-border);
}

.learn-author-card__meta-row:last-child {
    border-bottom: none;
}

.learn-author-card__label {
    font-size: 0.75rem;
    color: var(--learn-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.learn-author-card__value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--learn-text);
}

.learn-author-card__level {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.learn-author-card__level--beginner {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.learn-author-card__level--intermediate {
    background: rgba(234, 179, 8, 0.2);
    color: #eab308;
}

.learn-author-card__level--advanced {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* Mobile: Stack author card above content */
@media (max-width: 768px) {
    .learn-article__header--with-sidebar {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .learn-author-card {
        display: grid;
        grid-template-columns: auto 1fr;
        grid-template-rows: auto auto;
        gap: 0 16px;
        text-align: left;
        padding: 16px;
        position: static;
    }
    
    .learn-author-card__avatar {
        grid-row: 1 / 3;
        width: 60px;
        height: 60px;
        margin: 0;
    }
    
    .learn-author-card__name {
        margin: 0;
        align-self: end;
    }
    
    .learn-author-card__title {
        margin: 0;
        align-self: start;
    }
    
    .learn-author-card__meta {
        grid-column: 1 / -1;
        margin-top: 12px;
        display: flex;
        gap: 16px;
        padding: 10px 12px;
    }
    
    .learn-author-card__meta-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
        padding: 0;
        border: none;
    }
}

.learn-article__category {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(249, 115, 22, 0.1);
    color: var(--learn-accent);
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 16px;
    transition: background 0.2s;
}

.learn-article__category:hover {
    background: rgba(249, 115, 22, 0.2);
}

.learn-article__header h1 {
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    font-weight: 800;
    margin: 0 0 20px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.learn-article__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--learn-text-muted);
    margin-bottom: 20px;
}

.learn-article__meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Old inline author styles kept for backward compatibility if needed */
.learn-article__author {
    display: flex;
    align-items: center;
    gap: 10px;
}

.learn-article__author-image {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--learn-accent);
    flex-shrink: 0;
}

/* Hide old meta row when using sidebar layout */
.learn-article__header--with-sidebar .learn-article__meta {
    display: none;
}

.learn-article__difficulty {
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.7rem;
}

.learn-article__difficulty--beginner {
    background: rgba(34, 197, 94, 0.15);
    color: #22c55e;
}

.learn-article__difficulty--intermediate {
    background: rgba(234, 179, 8, 0.15);
    color: #eab308;
}

.learn-article__difficulty--advanced {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.learn-article__excerpt {
    font-size: 1.15rem;
    color: var(--learn-text-muted);
    margin: 0;
    line-height: 1.6;
}

.learn-article__featured-image {
    margin: 0;
    height: 280px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--learn-border);
}

.learn-article__featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.learn-article__featured-image:hover img {
    transform: scale(1.02);
}

/* Article Body Content */
.learn-article__content {
    padding: 40px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.learn-article__content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    color: var(--learn-text);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--learn-accent);
}

.learn-article__content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 2rem 0 0.8rem;
    color: var(--learn-text);
    padding-bottom: 8px;
    border-bottom: 2px solid var(--learn-accent);
}

.learn-article__content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 1.5rem 0 0.6rem;
    color: var(--learn-text);
    padding-bottom: 6px;
    border-bottom: 2px solid var(--learn-accent);
}

.learn-article__content p {
    margin: 0 0 1.5rem;
}

.learn-article__content ul,
.learn-article__content ol {
    margin: 0 0 1.5rem;
    padding-left: 1.5rem;
}

.learn-article__content li {
    margin-bottom: 0.5rem;
}

.learn-article__content a {
    color: var(--learn-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.learn-article__content a:hover {
    border-bottom-color: var(--learn-accent);
}

.learn-article__content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--learn-radius-sm);
    margin: 1.5rem 0;
}

.learn-article__content blockquote {
    margin: 1.5rem 0;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.03);
    border-left: 4px solid var(--learn-accent);
    border-radius: 0 var(--learn-radius-sm) var(--learn-radius-sm) 0;
    font-style: italic;
}

.learn-article__content pre,
.learn-article__content code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.9em;
}

.learn-article__content code {
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
}

.learn-article__content pre {
    background: #0d0f12;
    padding: 20px;
    border-radius: var(--learn-radius-sm);
    overflow-x: auto;
    margin: 1.5rem 0;
}

.learn-article__content pre code {
    background: none;
    padding: 0;
}

.learn-article__content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.learn-article__content th,
.learn-article__content td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--learn-border);
}

.learn-article__content th {
    background: var(--learn-surface-hover);
    font-weight: 600;
}

.learn-article__content tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Article Footer */
.learn-article__footer {
    padding: 30px 40px;
    border-top: 1px solid var(--learn-border);
}

.learn-article__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 16px;
}

.learn-article__tags > span {
    color: var(--learn-text-muted);
    font-size: 0.9rem;
}

.learn-article__updated {
    font-size: 0.85rem;
    color: var(--learn-text-muted);
    margin: 0;
}

/* ===== Notices ===== */
.learn-notice {
    padding: 20px 24px;
    border-radius: var(--learn-radius-sm);
    margin: 1.5rem 0;
}

.learn-notice--info {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--learn-info);
}

.learn-notice--warning {
    background: rgba(234, 179, 8, 0.1);
    border-left: 4px solid var(--learn-warning);
}

.learn-notice--success {
    background: rgba(34, 197, 94, 0.1);
    border-left: 4px solid var(--learn-success);
}

.learn-notice p {
    margin: 0;
}

/* ===== Related Articles ===== */
.learn-related {
    margin-top: 40px;
}

.learn-related h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 0 20px;
}

.learn-related__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.learn-related__card {
    display: block;
    padding: 20px;
    background: var(--learn-surface);
    border-radius: var(--learn-radius);
    border: 1px solid var(--learn-border);
    text-decoration: none;
    color: var(--learn-text);
    transition: all 0.2s;
}

.learn-related__card:hover {
    border-color: var(--learn-accent);
    transform: translateY(-2px);
}

.learn-related__card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 8px;
}

.learn-related__time {
    font-size: 0.85rem;
    color: var(--learn-text-muted);
}

/* ===== CTA Section ===== */
.learn-cta {
    margin-top: 50px;
    padding: 40px;
    background: linear-gradient(135deg, var(--learn-surface) 0%, #1e2128 100%);
    border-radius: var(--learn-radius);
    border: 1px solid var(--learn-border);
    text-align: center;
}

.learn-cta h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 12px;
}

.learn-cta p {
    color: var(--learn-text-muted);
    margin: 0 0 24px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.learn-cta__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* ===== Buttons ===== */
.learn-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--learn-radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.learn-btn--primary {
    background: var(--learn-accent);
    color: white;
}

.learn-btn--primary:hover {
    background: var(--learn-accent-hover);
}

.learn-btn--secondary {
    background: var(--learn-surface-hover);
    color: var(--learn-text);
    border: 1px solid var(--learn-border);
}

.learn-btn--secondary:hover {
    border-color: var(--learn-accent);
    color: var(--learn-accent);
}

/* ===== 404 Page ===== */
.learn-404 {
    text-align: center;
    padding: 80px 20px;
}

.learn-404 h1 {
    font-size: 2.5rem;
    margin: 0 0 16px;
}

.learn-404 p {
    color: var(--learn-text-muted);
    margin: 0 0 30px;
    font-size: 1.1rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .learn-main {
        padding: 24px 16px 60px;
    }
    
    .learn-hero {
        padding: 24px 0 36px;
    }
    
    .learn-categories {
        gap: 12px;
    }
    
    .learn-category-card {
        padding: 16px 20px;
        min-width: 120px;
    }
    
    .learn-grid {
        grid-template-columns: 1fr;
    }
    
    .learn-article__header,
    .learn-article__content,
    .learn-article__footer {
        padding-left: 24px;
        padding-right: 24px;
    }
    
    .learn-article__header {
        padding-top: 30px;
    }
    
    .learn-article__content {
        font-size: 1rem;
    }
    
    .learn-cta {
        padding: 30px 24px;
    }
    
    .learn-cta__buttons {
        flex-direction: column;
    }
    
    .learn-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .learn-category-card {
        flex: 1 1 calc(50% - 8px);
        min-width: 0;
    }
    
    .learn-article__meta {
        flex-direction: column;
        gap: 8px;
    }
}

/* ===== Search Page Styles ===== */
.learn-search-header {
    text-align: center;
    margin-bottom: 40px;
}

.learn-search-header h1 {
    font-size: 1.8rem;
    margin: 20px 0;
}

.learn-search-header .learn-search {
    margin: 24px auto;
}

.learn-search-count {
    color: var(--learn-text-muted);
    font-size: 0.95rem;
    margin: 16px 0 0;
}

.learn-popular-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    padding: 20px;
    background: var(--learn-surface);
    border-radius: var(--learn-radius);
}

.learn-popular-tags > span {
    color: var(--learn-text-muted);
    font-size: 0.9rem;
}

.learn-tag--active {
    background: var(--learn-accent) !important;
    color: white !important;
}

.learn-no-results {
    text-align: center;
    padding: 60px 20px;
}

.learn-no-results h2 {
    font-size: 1.5rem;
    margin: 0 0 12px;
}

.learn-no-results p {
    color: var(--learn-text-muted);
    margin: 0 0 30px;
}

/* ===== Category Header ===== */
.learn-category-header {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 30px;
}

.learn-category-header__icon {
    font-size: 3rem;
    margin-bottom: 16px;
    display: block;
}

.learn-category-header h1 {
    font-size: 2rem;
    margin: 0 0 12px;
}

.learn-category-header__desc {
    color: var(--learn-text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 16px;
}

.learn-category-header__count {
    font-size: 0.9rem;
    color: var(--learn-text-muted);
}

.learn-other-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
}

.learn-other-categories > span {
    color: var(--learn-text-muted);
    font-size: 0.9rem;
}

.learn-category-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--learn-surface);
    border: 1px solid var(--learn-border);
    border-radius: 20px;
    color: var(--learn-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.learn-category-pill:hover {
    border-color: var(--learn-accent);
    background: var(--learn-surface-hover);
}

/* ===== Table of Contents ===== */
.learn-toc {
    background: var(--learn-surface);
    border: 1px solid var(--learn-border);
    border-radius: var(--learn-radius-sm);
    padding: 20px 24px;
    margin-bottom: 30px;
}

.learn-toc h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--learn-text-muted);
    margin: 0 0 12px;
}

.learn-toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.learn-toc li {
    margin-bottom: 8px;
}

.learn-toc li a {
    color: var(--learn-text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.learn-toc li a:hover {
    color: var(--learn-accent);
}

.learn-toc__sub {
    padding-left: 16px;
}

.learn-toc__sub a {
    color: var(--learn-text-muted);
    font-size: 0.9rem;
}

/* ===== Progress Bar ===== */
.learn-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--learn-bg);
    z-index: 9999;
}

.learn-progress__bar {
    height: 100%;
    background: var(--learn-accent);
    width: 0;
    transition: width 0.1s;
}

/* ===== Code Copy Button ===== */
.learn-code-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 12px;
    background: var(--learn-surface-hover);
    border: 1px solid var(--learn-border);
    border-radius: 4px;
    color: var(--learn-text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.learn-code-copy:hover {
    background: var(--learn-accent);
    color: white;
    border-color: var(--learn-accent);
}

.learn-code-copy.copied {
    background: var(--learn-success);
    border-color: var(--learn-success);
    color: white;
}

/* ===== Lightbox ===== */
.learn-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 40px;
}

.learn-lightbox img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--learn-radius-sm);
}

.learn-lightbox__close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2.5rem;
    color: white;
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.learn-lightbox__close:hover {
    opacity: 1;
}