/* ===================================================
   HOME.CSS — Home page specific styles
   =================================================== */

/* ── Hero ── */
.hero {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-height) + 40px) 24px 80px;
    max-width: var(--max-width);
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 620px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(79, 200, 184, 0.1);
    border: 1px solid rgba(79, 200, 184, 0.2);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-secondary);
    margin-bottom: 24px;
}

.pulse-dot {
    width: 7px;
    height: 7px;
    background: var(--accent-secondary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.4);
        opacity: 0.5;
    }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-num {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-card);
}

/* ── Neural Net Visual ── */
.hero-visual {
    flex: 0 0 auto;
    width: 420px;
    height: 420px;
    position: relative;
}

.neural-net {
    width: 100%;
    height: 100%;
}

.neural-net svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

/* ── Categories Section ── */
.categories-section {
    position: relative;
    z-index: 10;
    padding: 100px 24px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}



.cat-card {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--trans-slow);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.cat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(124, 106, 247, 0.04), transparent);
    opacity: 0;
    transition: opacity var(--trans-base);
}

.cat-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card), var(--shadow-glow);
    background: var(--bg-card-hover);
}

.cat-card:hover::before {
    opacity: 1;
}

.cat-card[data-cat="ml"]:hover {
    border-color: rgba(124, 106, 247, 0.4);
}

.cat-card[data-cat="dl"]:hover {
    border-color: rgba(79, 200, 184, 0.4);
}

.cat-card[data-cat="nlp"]:hover {
    border-color: rgba(247, 185, 106, 0.4);
}

.cat-card[data-cat="cv"]:hover {
    border-color: rgba(247, 106, 106, 0.4);
}

.cat-card[data-cat="genai"]:hover {
    border-color: rgba(208, 106, 247, 0.4);
}

.cat-card[data-cat="ainews"]:hover {
    border-color: rgba(106, 180, 247, 0.4);
}

.cat-card[data-cat="statistics"]:hover {
    border-color: rgba(251, 146, 60, 0.4);
}

.cat-icon-wrap {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 106, 247, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    transition: background var(--trans-base);
}

.cat-card[data-cat="dl"] .cat-icon-wrap {
    background: rgba(79, 200, 184, 0.1);
    color: var(--cat-dl);
}

.cat-card[data-cat="nlp"] .cat-icon-wrap {
    background: rgba(247, 185, 106, 0.1);
    color: var(--cat-nlp);
}

.cat-card[data-cat="cv"] .cat-icon-wrap {
    background: rgba(247, 106, 106, 0.1);
    color: var(--cat-cv);
}

.cat-card[data-cat="genai"] .cat-icon-wrap {
    background: rgba(208, 106, 247, 0.1);
    color: var(--cat-genai);
}

.cat-card[data-cat="ainews"] .cat-icon-wrap {
    background: rgba(106, 180, 247, 0.1);
    color: var(--cat-ainews);
}

.cat-icon {
    width: 26px;
    height: 26px;
}

.cat-content {
    flex: 1;
    min-width: 0;
}

.cat-tag {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(124, 106, 247, 0.12);
    color: var(--accent-primary);
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.cat-card[data-cat="dl"] .cat-tag {
    background: rgba(79, 200, 184, 0.12);
    color: var(--cat-dl);
}

.cat-card[data-cat="nlp"] .cat-tag {
    background: rgba(247, 185, 106, 0.12);
    color: var(--cat-nlp);
}

.cat-card[data-cat="cv"] .cat-tag {
    background: rgba(247, 106, 106, 0.12);
    color: var(--cat-cv);
}

.cat-card[data-cat="genai"] .cat-tag {
    background: rgba(208, 106, 247, 0.12);
    color: var(--cat-genai);
}

.cat-card[data-cat="ainews"] .cat-tag {
    background: rgba(106, 180, 247, 0.12);
    color: var(--cat-ainews);
}

.cat-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.3;
}

.cat-desc {
    font-size: 0.83rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.cat-arrow {
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: transform var(--trans-base), color var(--trans-base);
    flex-shrink: 0;
    margin-top: 2px;
}

.cat-card:hover .cat-arrow {
    transform: translateX(4px);
    color: var(--accent-primary);
}

.cat-glow {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(circle at 80% 50%, rgba(124, 106, 247, 0.06), transparent 60%);
    opacity: 0;
    transition: opacity var(--trans-base);
}

.cat-card:hover .cat-glow {
    opacity: 1;
}

/* ── Recent Section ── */
.recent-section {
    position: relative;
    z-index: 10;
    padding: 60px 24px 80px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.recent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.recent-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--trans-slow);
    display: flex;
    flex-direction: column;
    gap: 12px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.recent-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card);
    background: var(--bg-card-hover);
}

.recent-card-meta {
    display: flex;
    align-items: center;
    gap: 10px;
}

.recent-cat-badge {
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.recent-card-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.recent-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    transition: color var(--trans-fast);
}

.recent-card:hover .recent-card-title {
    color: var(--accent-primary);
}

.recent-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recent-card-read {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        min-height: auto;
        padding-top: calc(var(--nav-height) + 60px);
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        width: 300px;
        height: 300px;
    }

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

@media (max-width: 640px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        width: 240px;
        height: 240px;
    }

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