/* Hallmark · macrostructure: Scroll-Story Scene (the homepage's /pack system), editorial index · page: /articles (the Playbook)
 * tone: editorial, warm · anchor hue: UpHex blue 257° · theme: UpHex brand (locked)
 * Loaded after pack_start.css and uphex_home.css, whose hero, close, and footer styles these pages reuse.
 * Also styles the ordinary (non-editorial) posts, which share the Playbook's page key.
 * Motion lives in app/javascript/local_business/playbook_story.js; every rule here is the finished state.
 */

/* ------------------------------------------------------------------ 1 · hero + Sam's letters */
.playbook-hero { padding-bottom: var(--space-3xl); }
.playbook-hero .kicker { margin-bottom: var(--space-md); }
.playbook-hero .hero__title { max-width: 13ch; font-size: clamp(2.6rem, 5.4vw + 0.5rem, 5.25rem); }
.playbook-letters { display: grid; gap: var(--space-lg); margin-top: var(--space-3xl); }
.playbook-letter {
  display: flex; flex-direction: column; height: 100%; overflow: hidden; text-decoration: none;
  border-radius: var(--radius-panel); background: var(--color-surface);
  border: var(--rule-hair) solid var(--color-rule); box-shadow: var(--shadow-soft);
  transition: transform var(--dur-short) var(--ease-out), box-shadow var(--dur-short) var(--ease-out);
}
.playbook-letter:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.playbook-letter__media { display: block; aspect-ratio: 16 / 10; overflow: hidden; background: var(--color-navy); }
.playbook-letter__media img { width: 100%; height: 100%; object-fit: cover; }
.playbook-letter__mark { display: grid; place-items: center; width: 100%; height: 100%; font: italic 600 var(--text-3xl)/1 var(--font-editorial); color: var(--color-blue-light); }
.playbook-letter__body { display: flex; flex-direction: column; gap: var(--space-xs); flex: 1; padding: var(--space-lg); }
.playbook-letter__title { font: 800 var(--text-lg)/1.2 var(--font-display); letter-spacing: -0.02em; color: var(--color-navy); }
.playbook-letter__excerpt { color: var(--color-muted); }
.playbook-letter__read { margin-top: auto; padding-top: var(--space-sm); font-weight: 800; color: var(--color-blue-deep); }
@media (min-width: 760px) {
  .playbook-letters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .playbook-letters__item--featured { grid-column: 1 / -1; }
  .playbook-letters__item--featured .playbook-letter { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); }
  .playbook-letters__item--featured .playbook-letter__media { aspect-ratio: auto; min-height: 22rem; }
  .playbook-letters__item--featured .playbook-letter__body { justify-content: center; padding: var(--space-2xl); }
  .playbook-letters__item--featured .playbook-letter__title { font-size: var(--text-2xl); line-height: 1.08; }
}
@media (min-width: 1100px) {
  .playbook-letters { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ------------------------------------------------------------------ 2 · the archive */
.playbook-archive { padding: var(--space-3xl) 0 var(--space-4xl); background: var(--color-surface); border-top: var(--rule-hair) solid var(--color-rule); }
.playbook-archive__inner { max-width: 56rem; }
.playbook-archive__head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: var(--space-md); padding-bottom: var(--space-lg); border-bottom: var(--rule-hair) solid var(--color-rule-strong); }
.playbook-archive__page { font-size: var(--text-sm); font-weight: 700; color: var(--color-muted); }
.playbook-entry { display: grid; gap: var(--space-xs); padding: var(--space-lg) 0; border-bottom: var(--rule-hair) solid var(--color-rule); }
.playbook-entry__meta { display: flex; flex-wrap: wrap; gap: var(--space-xs) var(--space-md); font-size: var(--text-sm); color: var(--color-muted); }
.playbook-entry__category { font-weight: 800; color: var(--color-blue-deep); }
.playbook-entry__title { font: 800 var(--text-lg)/1.25 var(--font-display); letter-spacing: -0.015em; }
.playbook-entry__title a { text-decoration: none; }
.playbook-entry__title a:hover { color: var(--color-blue-deep); text-decoration: underline; text-underline-offset: 4px; }
.playbook-entry__excerpt { color: var(--color-muted); max-width: 44rem; }
.playbook-pages { display: flex; justify-content: space-between; gap: var(--space-md); padding-top: var(--space-lg); }
.playbook-pages a { display: inline-flex; align-items: center; min-height: var(--touch-target); font-weight: 800; color: var(--color-blue-deep); text-underline-offset: 3px; }
@media (min-width: 760px) {
  .playbook-entry { grid-template-columns: 11rem minmax(0, 1fr); column-gap: var(--space-xl); }
  .playbook-entry__meta { grid-row: 1 / span 2; flex-direction: column; gap: 2px; padding-top: 4px; }
}

/* ------------------------------------------------------------------ reduced motion */
@media (prefers-reduced-motion: reduce) {
  .playbook-letter { transition: none; }
}

/* ------------------------------------------------------------------ an ordinary post (blog/show, non-editorial) */
.post { padding-top: 7.5rem; }
.post__head { max-width: 46rem; padding-bottom: var(--space-xl); border-bottom: var(--rule-hair) solid var(--color-rule-strong); }
.post__back a { display: inline-flex; align-items: center; min-height: var(--touch-target); font-weight: 800; color: var(--color-blue-deep); text-decoration: none; }
.post__meta { margin-top: var(--space-md); }
.post__title { margin-top: var(--space-sm); font: 800 clamp(2.2rem, 3.6vw + 0.75rem, 3.75rem)/1.02 var(--font-display); letter-spacing: -0.04em; overflow-wrap: anywhere; }
.post-body { max-width: 46rem; padding: var(--space-2xl) 0 var(--space-4xl); font-size: var(--text-md); line-height: 1.75; color: color-mix(in oklab, var(--color-navy) 85%, var(--color-grey)); overflow-wrap: anywhere; }
.post-body > * + * { margin-top: var(--space-md); }
.post-body h2 { margin-top: var(--space-2xl); font: 800 var(--text-2xl)/1.15 var(--font-display); letter-spacing: -0.03em; color: var(--color-navy); }
.post-body h3 { margin-top: var(--space-xl); font: 800 var(--text-lg)/1.25 var(--font-display); color: var(--color-navy); }
.post-body ul, .post-body ol { padding-left: 1.25rem; }
.post-body ul { list-style: disc; }
.post-body ol { list-style: decimal; }
.post-body li + li { margin-top: var(--space-2xs); }
.post-body a { color: var(--color-blue-deep); font-weight: 700; text-underline-offset: 3px; }
.post-body blockquote { margin: var(--space-xl) 0; padding-left: var(--space-lg); border-left: 3px solid var(--color-blue); font: italic 500 var(--text-lg)/1.45 var(--font-editorial); color: var(--color-navy); }
.post-body img { height: auto; border-radius: var(--radius-card); }
.post-body table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); display: block; overflow-x: auto; }
.post-body th, .post-body td { padding: var(--space-xs) var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule); text-align: left; }
.post-body code { padding: 1px 6px; border-radius: 6px; background: var(--color-soft-blue); font-size: 0.9em; }
.post-body pre { overflow-x: auto; padding: var(--space-md); border-radius: var(--radius-card); background: var(--color-navy); color: var(--color-on-navy); }
.post-body pre code { padding: 0; background: none; }
.post__more { margin-top: var(--space-lg); }
.post__more a { display: inline-flex; align-items: center; min-height: var(--touch-target); font-weight: 800; color: var(--color-blue-light); }