/* Shared styles for blog category and series collection pages */

.collection-hero {
    position: relative;
    padding: clamp(3.5rem, 5vw, 5rem) 0 clamp(3rem, 5vw, 4rem);
    background: var(--page-hero-gradient), var(--page-hero-overlay);
    color: var(--page-hero-body-color);
}

.collection-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, color-mix(in srgb, var(--color-brand) 12%, transparent), transparent 80%);
    opacity: 0.2;
    pointer-events: none;
}

.collection-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: clamp(2.2rem, 4vw, 3rem);
    align-items: start;
}

.collection-hero-copy {
    display: grid;
    gap: 1.1rem;
}

.collection-hero-copy h1 {
    color: var(--page-hero-heading-color);
}

.collection-meta {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    font-size: 0.93rem;
}

.collection-meta li {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-surface) 70%, transparent);
    color: var(--color-text);
}

.collection-meta a {
    color: inherit;
    text-decoration: underline;
}

.collection-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.3rem;
}

.collection-hero-card {
    display: grid;
    gap: 0.85rem;
    padding: 1.6rem;
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--color-border) 70%, transparent);
}

.collection-hero-card h2 {
    margin: 0;
    font-size: clamp(1.4rem, 2.4vw, 1.85rem);
}

.collection-hero-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.7rem;
    color: color-mix(in srgb, var(--color-text) 85%, var(--color-text-muted) 15%);
}

.collection-hero-card li {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.collection-main {
    padding: clamp(3.5rem, 5vw, 5rem) 0 clamp(5rem, 6vw, 6rem);
}

.collection-section {
    padding: clamp(3rem, 5vw, 4rem) 0 0;
}

.collection-section-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.collection-section-header h2 {
    margin: 0 0 0.4rem;
}

.collection-filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-brand-soft) 70%, transparent);
    color: var(--color-brand-strong);
    font-weight: 600;
}

.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 560px), 1fr));
    gap: clamp(1.75rem, 4vw, 2.75rem);
}

.collection-card {
    display: grid;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--color-border) 70%, transparent);
}

.collection-card h3 {
    margin: 0;
}

.collection-card h3 a {
    color: inherit;
}

.collection-card p {
    margin: 0;
}

.collection-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.collection-card-facts {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.55rem;
    color: color-mix(in srgb, var(--color-text) 85%, var(--color-text-muted) 15%);
}

.collection-card-facts li {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.collection-card-placeholder {
    background: color-mix(in srgb, var(--color-surface) 80%, transparent);
    color: color-mix(in srgb, var(--color-text) 80%, var(--color-text-muted) 20%);
}

.collection-status {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-weight: 600;
    color: color-mix(in srgb, var(--color-text-muted) 65%, var(--color-text) 35%);
}

.collection-roadmap {
    padding: 1.8rem;
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--color-border) 65%, transparent);
    display: grid;
    gap: 1rem;
}

.collection-roadmap ol {
    margin: 0;
    padding-left: 1.25rem;
    display: grid;
    gap: 0.8rem;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tag-cloud .topic-pill {
    background: color-mix(in srgb, var(--color-brand-soft) 60%, transparent);
    color: var(--color-brand-strong);
}

.tag-cloud .topic-pill:hover,
.tag-cloud .topic-pill:focus-visible {
    color: color-mix(in srgb, var(--color-brand-strong) 85%, var(--color-brand) 15%);
}

[data-theme="dark"] .collection-filter-pill,
[data-theme="dark"] .tag-cloud .topic-pill {
    background: color-mix(in srgb, var(--color-brand) 24%, var(--color-surface-alt) 76%);
    color: var(--color-brand-contrast);
}

[data-theme="dark"] .tag-cloud .topic-pill:hover,
[data-theme="dark"] .tag-cloud .topic-pill:focus-visible {
    color: var(--color-brand-contrast);
}

@media (max-width: 780px) {
    .collection-meta li {
        width: 100%;
    }

    .collection-actions {
        width: 100%;
    }

    .collection-actions .btn {
        flex: 1;
        justify-content: center;
    }
}