/* ═══════════════════════════════════════════════════════════════
   KNOWLEDGE HUB INDEX — Page-Specific Styles
   Cyberpunk-Vintage · Pastel Neon
   ═══════════════════════════════════════════════════════════════ */

/* ── SEARCH ────────────────────────────────────────────────── */
.page-hero {
    padding-bottom: 60px;
}

.kb-search {
    max-width: 500px;
    margin: 40px auto 0;
    position: relative;
}

.kb-search-input {
    width: 100%;
    padding: 16px 20px 16px 52px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--ink);
    background: var(--bg-primary);
    border: 2px solid var(--border-strong);
    transition: all var(--speed-normal) ease;
}

.kb-search-input:focus {
    outline: none;
    border-color: var(--neon-orange);
    box-shadow: var(--glow-orange);
}

.kb-search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--slate);
    pointer-events: none;
}

/* ── TABS ──────────────────────────────────────────────────── */
.kb-tabs-section {
    background: var(--bg-alt);
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 70px;
    z-index: 50;
}

.kb-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 48px;
}

.kb-tabs {
    display: flex;
    gap: 8px;
    padding: 16px 0;
    overflow-x: auto;
}

.kb-tab {
    padding: 10px 20px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.10em;
    color: var(--slate);
    background: transparent;
    border: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--speed-normal) ease;
}

.kb-tab:hover {
    color: var(--ink);
    border-color: var(--border-strong);
}

.kb-tab.active {
    color: var(--bg-primary);
    background: var(--ink);
    border-color: var(--ink);
}

/* ── SECTION TITLE ─────────────────────────────────────────── */
.kb-section-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 32px;
}

/* ── FEATURED ──────────────────────────────────────────────── */
.kb-featured {
    padding: 80px 48px 40px;
    background: var(--bg-primary);
}

.kb-featured-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ── CARDS ──────────────────────────────────────────────────── */
.kb-card {
    display: block;
    padding: 28px;
    background: var(--bg-card);
    border: 2px solid var(--border);
    text-decoration: none;
    transition: all var(--speed-normal) ease;
}

.kb-card:hover {
    border-color: var(--neon-orange);
    transform: translateY(-4px);
    box-shadow: var(--glow-orange);
}

.kb-card-featured {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 32px;
}

.kb-card-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kb-card-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--neon-orange);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.section-icon {
    width: 24px;
    height: 24px;
    vertical-align: middle;
    margin-right: 8px;
    stroke: var(--neon-orange);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.kb-card-content {
    flex: 1;
}

.kb-card-category {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--neon-orange);
    margin-bottom: 8px;
}

.kb-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 8px;
    line-height: 1.3;
}

.kb-card p {
    font-size: 0.9rem;
    color: var(--slate);
    line-height: 1.6;
    margin: 0;
}

.kb-card-arrow {
    font-size: 1.5rem;
    color: var(--neon-orange);
    flex-shrink: 0;
    transition: transform var(--speed-normal) ease;
}

.kb-card:hover .kb-card-arrow {
    transform: translateX(4px);
}

.kb-card-meta {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--graphite);
    margin-top: 12px;
}

/* ── RESOURCES ─────────────────────────────────────────────── */
.kb-resources {
    padding: 40px 48px 80px;
}

.kb-resource-section {
    padding: 40px 0;
    border-bottom: 2px solid var(--border);
}

.kb-resource-section:last-child {
    border-bottom: none;
}

.kb-section-header {
    margin-bottom: 32px;
}

.kb-section-header h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 8px;
}

.kb-section-header p {
    font-size: 0.9rem;
    color: var(--slate);
}

.kb-section-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.10em;
    color: var(--neon-orange);
    text-decoration: none;
    transition: color var(--speed-normal) ease;
}

.kb-section-link:hover {
    color: var(--ink);
}

.kb-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* ── BLOG CARD DATE ────────────────────────────────────────── */
.kb-card-date {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--slate);
    margin-bottom: 8px;
}

/* ── GLOSSARY PREVIEW ──────────────────────────────────────── */
.kb-glossary-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.kb-glossary-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.kb-glossary-cat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    background: var(--bg-alt);
    border: 2px solid var(--border);
    text-decoration: none;
    transition: all var(--speed-normal) ease;
}

.kb-glossary-cat:hover {
    border-color: var(--neon-orange);
    transform: translateY(-2px);
}

.kb-glossary-icon {
    font-size: 1.5rem;
}

.kb-glossary-label {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--ink);
}

.kb-glossary-count {
    font-size: 0.75rem;
    color: var(--slate);
    margin-left: auto;
}

.kb-glossary-featured h4 {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--slate);
    margin-bottom: 16px;
}

.kb-glossary-terms {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.glossary-term-pill {
    padding: 8px 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--ink);
    background: var(--bg-primary);
    border: 2px solid var(--border);
    text-decoration: none;
    transition: all var(--speed-normal) ease;
}

.glossary-term-pill:hover {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--bg-primary);
}

/* ── ROADMAP CARDS & FILTERS ───────────────────────────────── */
.kb-temporal-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.kb-temporal-tag {
    padding: 8px 16px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--slate);
    background: var(--bg-alt);
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all var(--speed-normal) ease;
}

.kb-temporal-tag:hover {
    border-color: var(--neon-orange);
    color: var(--ink);
}

.kb-temporal-tag.active {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--bg-primary);
}

.kb-roadmap-grid {
    grid-template-columns: repeat(4, 1fr);
}

.kb-card-roadmap {
    position: relative;
    padding-left: 40px;
}

.kb-roadmap-status {
    position: absolute;
    left: 16px;
    top: 16px;
    font-size: 1rem;
    line-height: 1;
}

.kb-roadmap-status.completed {
    color: var(--neon-teal);
}

.kb-roadmap-status.current {
    color: var(--neon-orange);
    animation: pulseDot 2s infinite;
}

.kb-roadmap-status.upcoming {
    color: var(--silver);
}

.kb-roadmap-status.future {
    color: var(--slate);
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.kb-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.kb-tag {
    padding: 3px 8px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.10em;
}

.kb-tag.temporal {
    background: rgba(255, 107, 53, 0.15);
    color: var(--neon-orange);
}

.kb-tag.temporal.current {
    background: rgba(255, 107, 53, 0.25);
    color: #CC4400;
}

.kb-tag.category {
    background: rgba(10, 10, 42, 0.06);
    color: var(--slate);
}

/* ── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 1200px) {
    .kb-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .kb-roadmap-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .kb-featured-grid {
        grid-template-columns: 1fr;
    }

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

    .kb-glossary-preview {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 600px) {
    .kb-container {
        padding: 0 24px;
    }

    .kb-featured,
    .kb-resources {
        padding-left: 24px;
        padding-right: 24px;
    }

    .kb-grid {
        grid-template-columns: 1fr;
    }

    .kb-glossary-categories {
        grid-template-columns: 1fr;
    }

    .kb-roadmap-grid {
        grid-template-columns: 1fr;
    }

    .kb-temporal-filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .kb-temporal-tag {
        white-space: nowrap;
    }
}