/* ==========================================================================
   Gradien Resources system (new-positioning branch)
   Covers /resources, /research, /updates, /resources/[slug], /updates/[slug]
   ========================================================================== */

.resources-hero { padding-top: clamp(48px, 7vw, 88px); }
.resources-hero__grid { display: grid; grid-template-columns: 55fr 45fr; gap: var(--space-6); align-items: center; }
.resources-hero__title { font-size: var(--text-h1); font-weight: var(--weight-medium); line-height: var(--leading-tight); letter-spacing: var(--tracking-display); margin: var(--space-2) 0 var(--space-3); max-width: 16ch; }
.resources-hero__lead { font-size: var(--text-lead); color: var(--text-secondary); max-width: 56ch; margin: 0 0 var(--space-3); }
.resources-archive { position: relative; aspect-ratio: 4/3; border-radius: var(--radius-2xl); background: var(--surface-soft); border: 1px solid var(--border-subtle); display: flex; flex-wrap: wrap; align-content: center; justify-content: center; gap: var(--space-2); padding: var(--space-4); }
.resources-archive__item { background: var(--white); border: 1px solid var(--border-subtle); border-radius: var(--radius-md); padding: 10px 16px; font-size: var(--text-sm); color: var(--text-secondary); box-shadow: var(--shadow-sm); }

/* ---------- Featured resource ---------- */
.resources-featured__link { display: grid; grid-template-columns: 65fr 35fr; gap: var(--space-5); text-decoration: none; color: inherit; align-items: center; }
.resources-featured__visual { display: block; aspect-ratio: 16/10; background-size: cover; background-position: center; border-radius: var(--radius-xl); }
.resources-featured__type { display: block; font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: var(--tracking-caps); color: var(--text-tertiary); margin-bottom: 6px; }
.resources-featured__title { display: block; font-size: var(--text-h2); font-weight: var(--weight-medium); line-height: var(--leading-tight); margin-bottom: var(--space-2); }
.resources-featured__summary { display: block; color: var(--text-secondary); margin-bottom: var(--space-2); }
.resources-featured__meta { display: block; font-size: var(--text-sm); color: var(--text-tertiary); }

/* ---------- Filter bar ---------- */
.resources-filter { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; margin: var(--space-5) 0 var(--space-5); }
.resources-filter__btn { appearance: none; border: 1px solid var(--border-subtle); background: var(--white); border-radius: var(--radius-pill); padding: 8px 18px; font-size: var(--text-sm); color: var(--text-secondary); cursor: pointer; }
.resources-filter__btn.is-active { background: var(--ink); color: var(--white); border-color: var(--ink); }

/* ---------- Mixed-scale library grid ---------- */
.resources-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.resources-grid__item[data-content-type] { display: contents; }
.resources-grid__item[hidden] { display: none; }

.resource-card { display: flex; flex-direction: column; text-decoration: none; color: inherit; border-radius: var(--radius-lg); overflow: hidden; background: var(--white); border: 1px solid var(--border-subtle); transition: transform var(--duration-base) var(--ease-out); }
.resource-card:hover, .resource-card:focus-visible { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.resource-card__cover { display: block; aspect-ratio: 16/10; background-size: cover; background-position: center; background-color: var(--surface-card); }
.resource-card__body { display: flex; flex-direction: column; gap: 6px; padding: var(--space-3); }
.resource-card__type { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: var(--tracking-caps); color: var(--text-tertiary); }
.resource-card__title { font-size: var(--text-body-lg); font-weight: var(--weight-medium); line-height: var(--leading-snug); }
.resource-card__summary { font-size: var(--text-sm); color: var(--text-secondary); }
.resource-card__meta { font-size: var(--text-xs); color: var(--text-tertiary); }
.resource-card--lg { grid-column: span 2; }
.resource-card--lg .resource-card__cover { aspect-ratio: 21/9; }
.resource-card--sm .resource-card__cover { aspect-ratio: 16/9; }

.resources-research__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); margin: var(--space-5) 0 var(--space-4); }

.resources-updates__list { list-style: none; margin: var(--space-5) 0 var(--space-4); padding: 0; display: flex; flex-direction: column; }
.resources-updates__list a { display: grid; grid-template-columns: 120px 1fr; gap: 4px var(--space-3); padding: var(--space-3) 0; border-bottom: 1px solid var(--border-subtle); text-decoration: none; color: inherit; }
.resources-updates__list time { grid-column: 1; grid-row: 1; color: var(--text-tertiary); font-size: var(--text-sm); }
.resources-updates__list strong { grid-column: 2; grid-row: 1; display: block; font-size: var(--text-body-lg); margin-bottom: 4px; }
.resources-updates__list span { grid-column: 2; grid-row: 2; color: var(--text-secondary); font-size: var(--text-sm); }
.resources-updates__empty { color: var(--text-secondary); }

.resources-subscribe__inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); align-items: center; }
.resources-publisher { text-align: center; padding: var(--space-5) 0 var(--space-7); color: var(--text-secondary); }

/* ---------- Article template (shared by /resources/[slug] and /updates/[slug]) ---------- */
.article-header { max-width: var(--container-text); text-align: left; padding-top: clamp(40px, 6vw, 72px); }
.article-header__title { font-size: var(--text-h1); font-weight: var(--weight-medium); line-height: var(--leading-tight); margin: var(--space-2) 0 var(--space-3); }
.article-header__abstract { font-size: var(--text-lead); color: var(--text-secondary); margin-bottom: var(--space-3); }
.article-header__meta { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-2); font-size: var(--text-sm); color: var(--text-tertiary); margin-bottom: var(--space-2); }
.article-header__topics { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-2); margin: 0; padding: 0; }
.article-header__topics li { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: var(--tracking-caps); color: var(--text-tertiary); white-space: nowrap; }
.article-hero { margin-top: var(--space-5); aspect-ratio: 21/9; background-size: cover; background-position: center; border-radius: var(--radius-xl); }
.article-body { max-width: var(--container-text); padding-top: var(--space-6); display: flex; flex-direction: column; gap: var(--space-3); font-size: var(--text-body); line-height: var(--leading-body); color: var(--ink-body); }
.article-body h2 { font-size: var(--text-h3); font-weight: var(--weight-medium); margin-top: var(--space-4); }
.article-body h3 { font-size: var(--text-title); font-weight: var(--weight-medium); margin-top: var(--space-3); }
.article-quote { border-left: 2px solid var(--signal-blue); padding-left: var(--space-3); font-size: var(--text-body-lg); font-style: normal; color: var(--ink); }
.article-callout { background: var(--surface-card); border-radius: var(--radius-md); padding: var(--space-3); font-weight: var(--weight-medium); }
.article-stats { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.article-stats__item strong { display: block; font-size: var(--text-h3); }
.article-stats__item span { font-size: var(--text-sm); color: var(--text-tertiary); }
.article-figure { margin: var(--space-2) 0; }
.article-figure__art { display: flex; align-items: center; justify-content: center; gap: 14px; aspect-ratio: 16/7; background: var(--surface-card); border-radius: var(--radius-lg); position: relative; }
.article-figure__node { width: 12px; height: 12px; border-radius: 50%; background: var(--signal-blue); }
.article-figure__node:nth-child(2) { background: var(--signal-cyan); }
.article-figure__node:nth-child(3) { background: var(--signal-green); }
.article-figure__line { position: absolute; left: 15%; right: 15%; top: 50%; height: 1px; background: var(--border-strong); z-index: -1; }
.article-figure figcaption { font-size: var(--text-sm); color: var(--text-tertiary); margin-top: var(--space-1); }

.article-closing { max-width: var(--container-text); padding: var(--space-6) 0; display: flex; flex-direction: column; gap: var(--space-5); }
.article-related { border-top: 1px solid var(--border-subtle); padding-top: var(--space-4); }
.article-related .gr-eyebrow { display: block; margin-bottom: var(--space-2); }
.article-cta { text-align: center; background: var(--surface-soft); border-radius: var(--radius-xl); padding: var(--space-5); }
.article-cta__headline { font-size: var(--text-h3); font-weight: var(--weight-medium); margin-bottom: var(--space-3); max-width: 32ch; margin-inline: auto; }
.article-subscribe { border-top: 1px solid var(--border-subtle); padding-top: var(--space-4); }
.article-subscribe__heading { font-size: var(--text-title); font-weight: var(--weight-medium); margin: 0 0 var(--space-1); }
.article-subscribe__lead { color: var(--text-secondary); margin: 0 0 var(--space-2); font-size: var(--text-sm); }
.article-subscribe__row { display: flex; gap: var(--space-2); }
.article-subscribe__row input { flex: 1; }
.article-subscribe__status[hidden] { display: none; }
.article-subscribe__privacy { font-size: var(--text-xs); color: var(--text-tertiary); margin-top: var(--space-1); }

@media (max-width: 900px) {
  .resources-hero__grid { grid-template-columns: 1fr; }
  .resources-featured__link { grid-template-columns: 1fr; }
  .resources-grid { grid-template-columns: repeat(2, 1fr); }
  .resource-card--lg { grid-column: span 2; }
  .resources-research__grid { grid-template-columns: 1fr; }
  .resources-subscribe__inner { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .resources-grid { grid-template-columns: 1fr; }
  .resource-card--lg { grid-column: span 1; }
  .resources-updates__list a { grid-template-columns: 1fr; }
  .resources-updates__list time, .resources-updates__list strong, .resources-updates__list span { grid-column: 1; }
  .resources-updates__list time { grid-row: 1; }
  .resources-updates__list strong { grid-row: 2; }
  .resources-updates__list span { grid-row: 3; }
  .article-subscribe__row { flex-direction: column; }
}