/*
 * Shared blog-article extras
 * Used by long-form articles that need feature grids, highlight boxes,
 * code blocks, TOCs, CTAs, etc. Companion to blog-post.css.
 */

/* ==========================================
   TYPOGRAPHY (article scope)
   ========================================== */
.blog-post-container article {
    max-width: 760px;
    margin: 0 auto;
}

.blog-post-container .lead {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.chapter-marker {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-top: 3rem;
    margin-bottom: 0.5rem;
    display: block;
    font-weight: 800;
}

.step-number-large {
    font-size: 3rem;
    font-weight: 900;
    color: var(--border-subtle);
    line-height: 1;
    margin-bottom: 0.25em;
}

/* ==========================================
   HIGHLIGHT BOX
   ========================================== */
.highlight-box {
    background: var(--surface-alt);
    border: 1px solid var(--border-subtle);
    border-left: 4px solid var(--accent);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.highlight-box.concept {
    border-left-color: #ec4899;
    background: #fdf2f8;
}

.highlight-box.success {
    border-left-color: var(--success);
    background: #ecfdf5;
}

.highlight-box.warning {
    border-left-color: var(--warn);
    background: #fffbeb;
}

.highlight-box.gold {
    border-left-color: #d4af37;
    background: #fffbeb;
}

/* ==========================================
   FEATURE GRID (large cards, guide-style)
   ========================================== */
.feature-grid-large {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 3rem 0;
}

@media (min-width: 768px) {
    .feature-grid-large {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 2rem;
    }
}

.feature-card-large {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
    transition: transform var(--dur-med) var(--ease-out),
                box-shadow var(--dur-med) var(--ease-out);
}

.feature-card-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-soft-lg);
}

.feature-card-content {
    padding: 1.5rem;
}

.feature-card-image {
    width: 100%;
    height: 200px;
    background: var(--surface-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-subtle);
}

.feature-card-image img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}

/* ==========================================
   FEATURE GRID (compact cards, pddsl-style)
   ========================================== */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin: 2rem 0;
}

@media (min-width: 768px) {
    .feature-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
    transition: transform var(--dur-med) var(--ease-out),
                box-shadow var(--dur-med) var(--ease-out);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-soft-lg);
}

.feature-card h4 {
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
    font-weight: 800;
}

/* ==========================================
   CODE BLOCK + INLINE SYNTAX TOKENS
   ========================================== */
.code-block {
    background: #1e293b;
    color: #f8fafc;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    font-family: ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace;
    font-size: 0.875rem;
    overflow-x: auto;
    margin: 2rem 0;
    box-shadow: var(--shadow-soft);
    line-height: 1.6;
}

.code-block code {
    background: transparent;
    color: inherit;
    font: inherit;
    white-space: pre;
}

.code-block .comment { color: #64748b; }
.code-block .directive { color: #f472b6; }
.code-block .element { color: #4ade80; }
.code-block .id { color: #60a5fa; }
.code-block .value { color: #fbbf24; }

/* ==========================================
   TOC
   ========================================== */
.toc {
    background: var(--surface-alt);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.5rem 2rem;
    margin: 2rem 0;
}

.toc h3 {
    margin-top: 0;
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

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

.toc li {
    margin-bottom: 0.5rem;
}

.toc a {
    text-decoration: none;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
}

.toc a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* ==========================================
   CONTENT IMAGE + LARGE BLOCKQUOTE
   ========================================== */
article img.content-image {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    margin: 2rem 0;
    border: 1px solid var(--border-subtle);
}

article blockquote {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-muted);
    border-left: 4px solid var(--accent);
    margin: 2.5rem 0;
    padding-left: 1.5rem;
    line-height: 1.6;
}

/* ==========================================
   CTA BUTTON (article-scope, distinct from .hero-cta)
   ========================================== */
.cta-button {
    display: inline-block;
    background: var(--accent);
    color: var(--surface) !important;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    text-decoration: none;
    margin: 0.5rem 0.5rem 0.5rem 0;
    border: 2px solid var(--text);
    box-shadow: var(--shadow-offset);
    transition: transform var(--dur-fast), box-shadow var(--dur-fast);
}

.cta-button:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--text);
}

.cta-button.secondary {
    background: var(--surface);
    color: var(--text) !important;
}

.cta-button:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

/* ==========================================
   HERO BANNER (in-article, dark)
   ========================================== */
.hero-banner {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
    color: var(--surface);
    padding: 2.5rem 1.5rem;
    border-radius: var(--radius-lg);
    margin: 2rem 0;
    text-align: center;
}

.hero-banner h2 {
    color: #fbbf24;
    margin-bottom: 1rem;
    font-size: clamp(1.5rem, 3vw + 1rem, 2rem);
}

.hero-banner p {
    color: #cbd5e1;
    font-size: 1.05rem;
    max-width: 720px;
    margin: 0 auto 1.5rem;
}

/* ==========================================
   COMPARISON TABLE
   ========================================== */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.95rem;
}

.comparison-table th,
.comparison-table td {
    padding: 0.85rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
    background: var(--surface-alt);
    font-weight: 700;
}

.comparison-table tr:hover {
    background: var(--surface-alt);
}

/* ==========================================
   TEMPLATE & STATS GRIDS
   ========================================== */
.template-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 1.5rem 0;
}

@media (min-width: 768px) {
    .template-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 1rem;
    }
}

.template-item {
    background: var(--surface-alt);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.template-item .emoji {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.template-item h5 {
    margin: 0;
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 700;
}

.stats-row {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 2rem 0;
    padding: 2rem;
    background: var(--surface-alt);
    border-radius: var(--radius-md);
}

.stat-item {
    text-align: center;
}

.stat-item .number {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--accent);
    line-height: 1;
}

.stat-item .label {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

/* ==========================================
   TOOL PLACEHOLDER (illustrative panel)
   ========================================== */
.tool-placeholder {
    background: linear-gradient(135deg, var(--accent-soft) 0%, #e1f5fe 100%);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin: 2rem 0;
    color: var(--accent);
    font-weight: 700;
}