/* ── Base ─────────────────────────────────────────────────────── */

body {
    margin: 0;
    font-family: 'Google Sans Flex', sans-serif;
    background-color: #f7f7f7;
    color: #1D1D2F;
}

/* ── Header ──────────────────────────────────────────────────── */

header {
    background-color: #fff;
    padding: 1.25rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.header-brand {
    font-size: 1.6rem;
    font-weight: 700;
    color: #1D1D2F;
    text-decoration: none;
}

.header-nav a {
    font-size: 0.95rem;
    color: #555;
    text-decoration: none;
    margin-left: 1.5rem;
}

.header-nav a:hover {
    color: #3B82F6;
}

/* ── Breadcrumb ───────────────────────────────────────────────── */

.breadcrumb {
    max-width: 900px;
    margin: 1.5rem auto 0;
    padding: 0 1.5rem;
    font-size: 0.875rem;
    color: #888;
}

.breadcrumb a {
    color: #3B82F6;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span + span::before {
    content: ' › ';
    color: #bbb;
}

/* ── Hero ────────────────────────────────────────────────────── */

.blog-hero {
    background: linear-gradient(135deg, #1D1D2F 0%, #2d3a5e 100%);
    color: #fff;
    text-align: center;
    padding: 4rem 1.5rem 3.5rem;
}

.blog-hero h1 {
    font-size: 2.6rem;
    margin: 0 0 0.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.blog-hero p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.75);
    margin: 0;
    max-width: 560px;
    margin-inline: auto;
}

/* ── Article grid ────────────────────────────────────────────── */

.blog-grid {
    max-width: 960px;
    margin: 3rem auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.75rem;
}

.article-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    position: relative;
}

.article-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.article-card:hover h2 {
    color: #3B82F6;
}

.article-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 0.75rem;
}

.reading-badge {
    background: #EFF6FF;
    color: #3B82F6;
    padding: 0.2rem 0.55rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.article-card h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 0.75rem;
    color: #1D1D2F;
    line-height: 1.4;
    transition: color 0.15s ease;
}

.article-card p {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.6;
    margin: 0 0 1.25rem;
    flex: 1;
}

.article-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: #3B82F6;
    text-decoration: none;
    /* stretched link — covers the entire card */
    position: static;
}

.article-card-link::after {
    content: '';
    position: absolute;
    inset: 0;
}

.article-card-link span {
    position: relative;
}

.article-card-link .arrow {
    transition: transform 0.15s ease;
}

.article-card:hover .article-card-link .arrow {
    transform: translateX(3px);
}

/* ── Article detail ──────────────────────────────────────────── */

.article-header {
    max-width: 720px;
    margin: 2rem auto 0;
    padding: 0 1.5rem;
}

.article-header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin: 0.5rem 0 1rem;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: #888;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    margin-bottom: 2rem;
}

.article-content {
    max-width: 720px;
    margin: 0 auto 3rem;
    padding: 0 1.5rem;
    font-size: 1.05rem;
    line-height: 1.75;
    color: #374151;
}

.article-content h2 {
    font-size: 1.55rem;
    font-weight: 700;
    margin: 2.5rem 0 0.75rem;
    color: #1D1D2F;
    letter-spacing: -0.01em;
}

.article-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 2rem 0 0.5rem;
    color: #1D1D2F;
}

.article-content p {
    margin: 0 0 1.25rem;
}

.article-content ul,
.article-content ol {
    padding-left: 1.5rem;
    margin: 0 0 1.25rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content strong {
    color: #1D1D2F;
    font-weight: 600;
}

.article-content em {
    font-style: italic;
    color: #555;
}

/* ── CTA banner ──────────────────────────────────────────────── */

.cta-banner {
    background: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    color: #fff;
    text-align: center;
    padding: 3rem 1.5rem;
    margin-bottom: 0;
}

.cta-banner h2 {
    font-size: 1.9rem;
    margin: 0 0 0.75rem;
    font-weight: 700;
}

.cta-banner p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 1.75rem;
}

.cta-banner a.btn-cta {
    display: inline-block;
    background: #fff;
    color: #2563EB;
    font-weight: 700;
    font-size: 1rem;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.15s ease;
}

.cta-banner a.btn-cta:hover {
    background: #f0f7ff;
}

/* ── Footer ──────────────────────────────────────────────────── */

footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.875rem;
    color: #999;
}

/* ── Empty state ─────────────────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 4rem 1.5rem;
    color: #888;
}

.empty-state p {
    font-size: 1.1rem;
}