/* ==========================================================================
   Knowledge Base — Bet Max Action
   ========================================================================== */

/* ----- Hero ----- */
.kb-hero {
    position: relative;
    padding: 100px 24px 220px;
    background:
        linear-gradient(135deg, rgba(46, 139, 87, 0.18) 0%, rgba(0, 0, 0, 0.92) 60%),
        url('/images/bma%20texture.jpg');
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.kb-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.015) 0 2px, transparent 2px 6px);
    pointer-events: none;
}

.kb-hero-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.kb-hero h1 {
    font-family: 'Inter', sans-serif;
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    color: var(--bma-white);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.kb-hero-accent {
    color: var(--bma-yellow);
}

.kb-hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255, 255, 255, 0.78);
    max-width: 720px;
    margin: 0 auto 36px;
    line-height: 1.6;
}

/* ----- Search ----- */
.kb-search {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.kb-search-input {
    width: 100%;
    padding: 16px 52px 16px 24px;
    font-size: 16px;
    font-family: inherit;
    color: var(--bma-white);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 100%), rgba(20, 20, 20, 0.85);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.kb-search-input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.kb-search-input:focus {
    outline: none;
    border-color: var(--bma-green-bright);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 3px rgba(0, 230, 118, 0.18);
}

.kb-search-icon {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--bma-yellow);
    pointer-events: none;
    font-size: 22px;
}

/* ----- Category filter ----- */
.kb-filters {
    background: rgba(20, 20, 20, 0.92);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 28px 24px;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.kb-filters-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.kb-category-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.kb-category-tag {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    padding: 9px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    color: rgba(255, 255, 255, 0.75);
    cursor: pointer;
    transition: all 0.2s ease;
}

.kb-category-tag:hover {
    color: var(--bma-white);
    border-color: rgba(0, 230, 118, 0.4);
    background: rgba(46, 139, 87, 0.12);
}

.kb-category-tag.active {
    background: linear-gradient(135deg, var(--bma-green) 0%, #1f6b40 100%);
    border-color: var(--bma-green-bright);
    color: var(--bma-white);
    box-shadow: 0 4px 14px rgba(46, 139, 87, 0.4);
}

/* ----- Articles grid ----- */
.kb-articles {
    padding: 60px 24px 100px;
    background: rgb(20, 20, 20);
    min-height: 60vh;
}

.kb-articles-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.kb-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
}

.kb-article-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 28px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%), rgba(26, 26, 26, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    overflow: hidden;
}

.kb-article-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--bma-green-bright) 0%, var(--bma-yellow) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.kb-article-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 230, 118, 0.35);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.kb-article-card:hover::before {
    transform: scaleX(1);
}

.kb-article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.kb-article-logo {
    height: 28px;
    width: auto;
    max-width: 120px;
    opacity: 0.85;
    transition: opacity 0.3s ease;
    object-fit: contain;
}

.kb-article-card:hover .kb-article-logo {
    opacity: 1;
}

.kb-article-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--bma-yellow);
    background: rgba(255, 215, 0, 0.1);
    padding: 5px 11px;
    border-radius: 4px;
    margin-left: auto;
}

.kb-article-date {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.45);
}

/* Screen-reader-only utility (for SEO-visible date) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.kb-article-title {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--bma-white);
    margin-bottom: 12px;
    transition: color 0.2s;
}

.kb-article-card:hover .kb-article-title {
    color: var(--bma-green-bright);
}

.kb-article-excerpt {
    font-size: 15px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 20px;
    flex: 1;
}

.kb-article-footer {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.kb-article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.kb-article-tag {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.04);
    padding: 4px 9px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.kb-article-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: var(--bma-green-bright);
    font-size: 14px;
}

.kb-article-read-more .material-symbols-outlined {
    font-size: 18px;
    transition: transform 0.2s;
}

.kb-article-card:hover .kb-article-read-more .material-symbols-outlined {
    transform: translateX(4px);
}

/* ----- Empty state ----- */
.kb-empty-state {
    text-align: center;
    padding: 80px 24px;
}

.kb-empty-icon {
    font-size: 64px;
    color: rgba(255, 255, 255, 0.25);
    margin-bottom: 18px;
}

.kb-empty-state h3 {
    font-size: 24px;
    color: var(--bma-white);
    margin-bottom: 8px;
}

.kb-empty-state p {
    color: rgba(255, 255, 255, 0.55);
    font-size: 16px;
}

/* ==========================================================================
   Single article
   ========================================================================== */
.kb-article-header {
    position: relative;
    padding: 90px 24px 80px;
    margin-bottom: 70px;
    background:
        linear-gradient(135deg, rgba(46, 139, 87, 0.22) 0%, rgba(0, 0, 0, 0.92) 60%),
        url('/images/bma%20texture.jpg');
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid rgba(255, 215, 0, 0.15);
}

.kb-article-header-logo {
    position: absolute;
    bottom: -65px;
    left: 50%;
    transform: translateX(-50%);
    width: 130px;
    height: 130px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--bma-green) 0%, #1f6b40 100%);
    box-shadow:
        0 12px 32px rgba(0, 0, 0, 0.55),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        0 0 0 2px rgba(255, 215, 0, 0.35);
    z-index: 10;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kb-article-header-logo::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0) 60%);
    pointer-events: none;
}

.kb-article-header-logo img {
    width: 70%;
    height: 70%;
    object-fit: contain;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .kb-article-header {
        margin-bottom: 60px;
    }

    .kb-article-header-logo {
        width: 100px;
        height: 100px;
        bottom: -50px;
        border-radius: 14px;
    }
}

.kb-article-header-inner {
    max-width: 900px;
    margin: 0 auto;
}

.kb-article-header-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
    margin-bottom: 22px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.kb-article-header-category {
    background: rgba(255, 215, 0, 0.15);
    color: var(--bma-yellow);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.kb-article-header-author {
    color: rgba(255, 255, 255, 0.65);
}

.kb-article-header h1 {
    font-size: clamp(30px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    color: var(--bma-white);
    margin-bottom: 18px;
    letter-spacing: -0.01em;
}

.kb-article-header-excerpt {
    font-size: 19px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 300;
}

/* ----- Breadcrumb ----- */
.kb-breadcrumb {
    background: rgba(10, 10, 10, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 16px 24px;
}

.kb-breadcrumb-inner {
    max-width: 1200px;
    margin: 0 auto;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.5);
}

.kb-breadcrumb-inner a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: color 0.2s;
}

.kb-breadcrumb-inner a:hover {
    color: var(--bma-green-bright);
}

.kb-breadcrumb-sep {
    color: rgba(255, 255, 255, 0.25);
}

.kb-breadcrumb-current {
    color: var(--bma-yellow);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ----- Article body wrapper (TOC + content) ----- */
.kb-article-wrapper {
    display: grid;
    grid-template-columns: 220px minmax(0, 900px);
    gap: 48px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 24px 80px;
}

.kb-toc {
    position: sticky;
    top: 100px;
    align-self: start;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding: 22px 18px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%), rgba(20, 20, 20, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 10px;
}

.kb-toc-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--bma-yellow);
    margin-bottom: 14px;
}

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

.kb-toc nav li {
    margin-bottom: 6px;
}

.kb-toc nav a {
    display: block;
    padding: 6px 10px;
    font-size: 13px;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: all 0.2s;
}

.kb-toc nav a:hover {
    color: var(--bma-white);
    border-left-color: rgba(255, 215, 0, 0.5);
}

.kb-toc nav a.active {
    color: var(--bma-yellow);
    border-left-color: var(--bma-yellow);
    font-weight: 600;
}

.kb-toc nav a.kb-toc-h3 {
    padding-left: 22px;
    font-size: 12px;
}

/* ----- Article content typography ----- */
.kb-article-content {
    color: rgba(255, 255, 255, 0.85);
    font-size: 17px;
    line-height: 1.75;
}

.kb-article-content > p:first-of-type {
    font-size: 19px;
    color: rgba(255, 255, 255, 0.9);
}

.kb-article-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--bma-white);
    margin: 48px 0 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(255, 215, 0, 0.25);
    scroll-margin-top: 100px;
}

.kb-article-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--bma-white);
    margin: 36px 0 14px;
    scroll-margin-top: 100px;
}

.kb-article-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--bma-white);
    margin: 28px 0 10px;
}

.kb-article-content p {
    margin-bottom: 22px;
}

.kb-article-content a {
    color: var(--bma-green-bright);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.2s;
}

.kb-article-content a:hover {
    color: var(--bma-yellow);
}

.kb-article-content ul,
.kb-article-content ol {
    padding-left: 28px;
    margin-bottom: 22px;
}

.kb-article-content li {
    margin-bottom: 8px;
}

.kb-article-content blockquote {
    border-left: 4px solid var(--bma-yellow);
    padding: 8px 22px;
    margin: 28px 0;
    background: rgba(255, 215, 0, 0.05);
    border-radius: 0 8px 8px 0;
    color: rgba(255, 255, 255, 0.85);
    font-style: italic;
}

.kb-article-content blockquote p:last-child {
    margin-bottom: 0;
}

.kb-article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 28px 0;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.kb-article-content code {
    background: rgba(0, 230, 118, 0.12);
    color: var(--bma-green-bright);
    padding: 2px 7px;
    border-radius: 4px;
    font-family: 'Roboto Mono', 'SF Mono', Consolas, monospace;
    font-size: 0.9em;
}

.kb-article-content pre {
    background: #1a1a1a;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 20px;
    margin: 28px 0;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.6;
}

.kb-article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.kb-article-content hr {
    border: none;
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    margin: 40px 0;
}

/* ----- Tags section ----- */
.kb-article-tags-section {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.kb-article-tags-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 14px;
}

.kb-article-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.kb-article-tag-pill {
    font-size: 13px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
    border-radius: 999px;
}

/* ----- Share section ----- */
.kb-article-share {
    margin-top: 40px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(46, 139, 87, 0.08) 0%, rgba(255, 215, 0, 0.04) 100%);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    text-align: center;
}

.kb-share-heading {
    font-size: 20px;
    font-weight: 700;
    color: var(--bma-white);
    margin-bottom: 18px;
}

.kb-share-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.kb-share-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    background: rgba(20, 20, 20, 0.6);
    border: 1px solid rgba(0, 230, 118, 0.4);
    border-radius: 999px;
    color: var(--bma-white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
}

.kb-share-button:hover {
    background: var(--bma-green);
    border-color: var(--bma-green-bright);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(46, 139, 87, 0.4);
}

.kb-share-button .material-symbols-outlined {
    font-size: 18px;
}

/* ----- Related articles ----- */
.kb-related {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.kb-related-heading {
    font-size: 24px;
    font-weight: 700;
    color: var(--bma-white);
    margin-bottom: 24px;
}

.kb-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 18px;
}

.kb-related-card {
    display: block;
    padding: 22px;
    background: rgba(26, 26, 26, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

.kb-related-card:hover {
    border-color: rgba(0, 230, 118, 0.4);
    transform: translateY(-2px);
}

.kb-related-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--bma-yellow);
}

.kb-related-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--bma-white);
    margin: 8px 0 8px;
    line-height: 1.35;
}

.kb-related-excerpt {
    font-size: 13px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   Mobile
   ========================================================================== */
@media (max-width: 1024px) {
    .kb-article-wrapper {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .kb-toc {
        display: none;
    }
}

@media (max-width: 768px) {
    .kb-hero {
        padding: 60px 20px 50px;
    }

    .kb-filters {
        padding: 20px 16px;
        position: static;
    }

    .kb-category-tags {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 4px;
    }

    .kb-category-tags::-webkit-scrollbar {
        display: none;
    }

    .kb-category-tag {
        flex-shrink: 0;
    }

    .kb-articles {
        padding: 40px 16px 70px;
    }

    .kb-articles-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .kb-article-card {
        padding: 22px;
    }

    .kb-article-header {
        padding: 60px 20px 40px;
    }

    .kb-article-wrapper {
        padding: 36px 20px 60px;
    }

    .kb-article-content {
        font-size: 16px;
    }

    .kb-article-content h2 {
        font-size: 24px;
    }

    .kb-article-content h3 {
        font-size: 20px;
    }

    .kb-share-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .kb-share-button {
        justify-content: center;
    }
}