/* ============================================================
   AutonoIQ v2 — resources.css (Insights / blog index)
   Page layout + every class blog-loader.js injects.
   Injected markup references the legacy --primary-orange alias,
   which core.css maps to ember. Do NOT redefine it here.
   ============================================================ */

/* ----- Hero ----- */
.insights-hero {
    padding-top: calc(76px + clamp(4rem, 9vw, 7.5rem));
    padding-bottom: clamp(2.5rem, 5vw, 4rem);
}
.insights-hero h1 {
    font-size: var(--text-h1);
    max-width: 18ch;
    margin: 1.5rem 0 1.75rem;
}
.insights-hero__sub {
    max-width: 58ch;
    color: var(--muted);
    font-size: 1.125rem;
}
.insights-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 2.5rem;
    margin-top: clamp(2rem, 4vw, 3rem);
    padding-top: 1.4rem;
    border-top: 1px solid var(--ink-border);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--muted);
}
.insights-hero__meta li::before {
    content: '/';
    color: var(--ember);
    margin-right: 0.6rem;
}

/* ----- Featured section ----- */
.featured-section { padding-top: clamp(2rem, 4vw, 3rem); }

.featured-post-card {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    background: var(--paper-deep);
    border: 1px solid var(--ink-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.featured-post-card:empty { display: none; }

.featured-post-image {
    position: relative;
    min-height: 340px;
}
.featured-post-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.featured-badge {
    position: absolute;
    top: 1.1rem;
    left: 1.1rem;
    background: var(--ember);
    color: #fff;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius);
}
.featured-post-content {
    padding: clamp(1.75rem, 4vw, 3rem);
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}
.featured-post-title {
    font-size: clamp(1.6rem, 2.8vw, 2.25rem);
    line-height: 1.12;
}
.featured-post-excerpt {
    color: var(--muted);
    max-width: 56ch;
}
.featured-post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--ink-border);
}

/* ----- Author block (injected) ----- */
.post-author {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}
.author-avatar {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    overflow: hidden;
}
.author-avatar svg { width: 100%; height: 100%; }
.author-name {
    font-weight: 600;
    font-size: 0.9375rem;
    line-height: 1.35;
    color: var(--ink);
}
.author-role {
    font-size: 0.8125rem;
    color: var(--muted);
}

/* ----- Post meta strip (injected) ----- */
.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.35rem 1.1rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
}
.post-category { color: var(--ember); }

/* ----- Legacy .btn-primary alias (injected "Read Article" button) ----- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.01em;
    text-decoration: none;
    white-space: nowrap;
    padding: 0.95rem 1.75rem;
    border-radius: var(--radius);
    border: 1px solid transparent;
    background: var(--ink);
    color: var(--paper);
    transition: background-color 0.25s var(--ease-out), color 0.25s var(--ease-out),
                transform 0.25s var(--ease-out);
}
.btn-primary:hover {
    background: var(--ember);
    color: #fff;
}
.btn-primary svg { transition: transform 0.3s var(--ease-out); }
.btn-primary:hover svg { transform: translateX(4px); }

/* ----- Posts section ----- */
.posts-section__title {
    font-size: var(--text-h2);
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.25rem, 2.5vw, 2rem);
}

/* ----- Blog cards (injected) ----- */
.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--paper);
    border: 1px solid var(--ink-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.4s var(--ease-out), border-color 0.4s var(--ease-out),
                box-shadow 0.4s var(--ease-out);
}
.blog-card:hover {
    transform: translateY(-6px);
    border-color: var(--ink-border-strong);
    box-shadow: 0 24px 48px -24px var(--ink-border-strong);
}
.blog-card-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-bottom: 1px solid var(--ink-border);
}
.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.92);
    transition: transform 0.6s var(--ease-out);
}
.blog-card:hover .blog-card-image img { transform: scale(1.045); }
.blog-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--ink-border), transparent 45%);
    pointer-events: none;
}
.blog-card-content {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    padding: 1.5rem;
    flex: 1;
}
.blog-card-title {
    font-size: 1.3rem;
    line-height: 1.18;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card-excerpt {
    color: var(--muted);
    font-size: var(--text-small);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
    padding-top: 1.1rem;
    border-top: 1px solid var(--ink-border);
}
.blog-card-footer .post-read-time {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
}
.blog-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    color: var(--ink);
    transition: color 0.25s var(--ease-out);
}
.blog-card-link:hover { color: var(--ember); }
.blog-card-link svg { transition: transform 0.3s var(--ease-out); }
.blog-card-link:hover svg { transform: translateX(4px); }

/* ----- Loading / empty / error states (injected) ----- */
.loading,
.empty-state,
.error-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 1.5rem;
    font-family: var(--font-mono);
    font-size: var(--text-label);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--muted);
    border: 1px dashed var(--ink-border-strong);
    border-radius: var(--radius);
}
.error-message {
    color: var(--ember);
    border-color: var(--ember);
}
.featured-post-card .loading,
.featured-post-card .empty-state,
.featured-post-card .error-message {
    grid-column: auto;
    border: none;
}

/* ----- Load-more pagination ----- */
#blog-load-more-wrap {
    text-align: center;
    margin-top: clamp(2rem, 4vw, 3rem);
}
#blog-load-more svg { transition: transform 0.3s var(--ease-out); }
#blog-load-more:hover svg { transform: translateY(3px); }

/* ----- Engine section (dark) ----- */
.engine-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2.5rem, 5vw, 5rem);
    align-items: start;
}
.engine-copy h2 {
    font-size: var(--text-h2);
    margin-bottom: 1.5rem;
    max-width: 16ch;
}
.engine-copy p {
    color: var(--muted-dark);
    max-width: 52ch;
    margin-bottom: 2.25rem;
}
.engine-spec {
    border-top: 1px solid var(--cream-border);
}
.engine-spec li {
    display: flex;
    gap: 1.5rem;
    align-items: baseline;
    padding: 1.35rem 0;
    border-bottom: 1px solid var(--cream-border);
}
.engine-spec__index {
    font-family: var(--font-mono);
    font-size: var(--text-label);
    font-weight: 500;
    color: var(--ember-bright);
    flex-shrink: 0;
}
.engine-spec p {
    color: var(--cream);
    font-size: var(--text-small);
    max-width: 48ch;
}
.engine-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
    margin-top: clamp(3rem, 6vw, 5rem);
    padding-top: clamp(2rem, 4vw, 3rem);
    border-top: 1px solid var(--cream-border);
}

/* ----- Responsive ----- */
@media (max-width: 991px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .featured-post-card { grid-template-columns: 1fr; }
    .featured-post-image { min-height: 0; aspect-ratio: 16 / 9; }
    .engine-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .blog-grid { grid-template-columns: 1fr; }
    .engine-stats { grid-template-columns: 1fr; }
    .featured-post-footer { align-items: flex-start; flex-direction: column; }
    .featured-post-footer .btn-primary { width: 100%; justify-content: center; }
    .insights-hero__meta { gap: 0.6rem 1.5rem; }
}