/* Phase 2 public content surfaces built on the qualified living-site foundation. */
.ab-surface-page {
  min-inline-size: 320px;
  margin: 0;
}

.ab-surface-hero {
  padding-block-start: calc(var(--ab-nav-height) + clamp(72px, 10vw, 132px));
  border-block-end: 1px solid var(--ab-line);
}

.ab-surface-hero .ab-display {
  max-inline-size: 11ch;
  margin-block-end: 0.3em;
}

.ab-surface-deck {
  max-inline-size: 760px;
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(24px, 2.6vw, 38px);
  line-height: 1.25;
}

.ab-surface-context {
  align-self: end;
  padding-block-end: 0.5rem;
}

.ab-surface-context .ab-heading-4 {
  margin-block-end: 2rem;
}

.ab-surface-section-head {
  align-items: end;
  margin-block-end: clamp(32px, 5vw, 64px);
}

.ab-record-stack {
  border-block-start: 1px solid var(--ab-line);
}

.ab-record-row {
  display: grid;
  grid-template-columns: minmax(130px, 2fr) minmax(0, 8fr) minmax(44px, 1fr);
  gap: clamp(18px, 3vw, 42px);
  align-items: start;
  padding-block: clamp(28px, 4vw, 48px);
  border-block-end: 1px solid var(--ab-line);
  background: transparent;
  box-shadow: none;
}

.ab-record-row h3 {
  margin-block-end: 0.35em;
}

.ab-record-row a {
  color: inherit;
}

.ab-record-meta p {
  margin-block-end: 0.35rem;
}

.ab-record-open {
  min-inline-size: 44px;
  min-block-size: 44px;
  display: inline-grid;
  place-items: center;
  justify-self: end;
  text-decoration: none;
  font-size: 24px;
}

.ab-surface-empty {
  padding: clamp(32px, 6vw, 72px);
  border-inline-start: 4px solid var(--ab-warm);
}

.ab-surface-empty h3 {
  max-inline-size: 680px;
}

.ab-surface-method {
  border-block-start: 1px solid var(--ab-line);
  background: color-mix(in srgb, var(--ab-surface) 72%, transparent);
}

@media (max-width: 900px) {
  .ab-surface-hero .ab-span-8,
  .ab-surface-hero .ab-span-4,
  .ab-surface-section-head .ab-span-4,
  .ab-surface-section-head .ab-offset-right,
  .ab-surface-method .ab-span-4,
  .ab-surface-method .ab-offset-right {
    grid-column: span 8;
  }

  .ab-surface-context {
    margin-block-start: 36px;
  }

  .ab-offset-right {
    grid-column-start: auto;
  }

  .ab-record-row {
    grid-template-columns: minmax(110px, 2fr) minmax(0, 6fr) 44px;
  }
}

@media (max-width: 600px) {
  .ab-surface-hero .ab-span-8,
  .ab-surface-hero .ab-span-4,
  .ab-surface-section-head .ab-span-4,
  .ab-surface-section-head .ab-offset-right,
  .ab-surface-method .ab-span-4,
  .ab-surface-method .ab-offset-right {
    grid-column: span 4;
  }

  .ab-record-row {
    grid-template-columns: 1fr 44px;
    gap: 12px 18px;
  }

  .ab-record-meta {
    grid-column: 1 / -1;
  }

  .ab-record-open {
    grid-column: 2;
    grid-row: 2;
  }
}

@media (forced-colors: active) {
  .ab-record-row,
  .ab-surface-empty,
  .ab-surface-method {
    border-color: CanvasText;
  }

  .ab-surface-method {
    background: Canvas;
    color: CanvasText;
  }
}


/* Phase 2 migration: About + Library. */
.ab-principle-grid {
  align-items: stretch;
}

.ab-principle {
  min-block-size: 240px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(24px, 3vw, 38px);
  border: 1px solid var(--ab-line);
}

.ab-about-form,
.ab-founder-section,
.ab-library-records {
  border-block-start: 1px solid var(--ab-line);
}

.ab-inline-links,
.ab-filter-row,
.ab-record-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
}

.ab-inline-links a,
.ab-chip {
  min-block-size: 44px;
  display: inline-flex;
  align-items: center;
}

.ab-inline-links a {
  font-weight: 600;
}

.ab-chip {
  padding: 6px 10px;
  border: 1px solid var(--ab-line);
  border-radius: 999px;
  color: var(--ab-text);
  font-size: 13px;
  line-height: 1;
  text-decoration: none;
}

.ab-chip:hover,
.ab-chip:focus-visible,
.ab-chip.is-active {
  border-color: var(--ab-text);
}

.ab-chip.is-active {
  font-weight: 600;
}

.ab-chip-static {
  cursor: default;
}

.ab-library-shelves {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block-start: 1px solid var(--ab-line);
  border-inline-start: 1px solid var(--ab-line);
}

.ab-shelf-card {
  min-block-size: 190px;
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 2.5vw, 30px);
  border-inline-end: 1px solid var(--ab-line);
  border-block-end: 1px solid var(--ab-line);
  color: var(--ab-text);
  text-decoration: none;
  background: transparent;
}

.ab-shelf-card:hover,
.ab-shelf-card:focus-visible,
.ab-shelf-card.is-active {
  background: color-mix(in srgb, var(--ab-surface) 74%, transparent);
}

.ab-shelf-card-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.ab-shelf-card h3 {
  margin-block: auto 0.4rem;
}

.ab-entry-meta {
  margin: 0;
  align-self: end;
}

.ab-entry-meta > div {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) minmax(0, 2fr);
  gap: 12px;
  padding-block: 10px;
  border-block-end: 1px solid var(--ab-line);
}

.ab-entry-meta dd {
  margin: 0;
}

.ab-record-notice {
  padding-block: 18px;
  border-block-end: 1px solid var(--ab-line);
  background: color-mix(in srgb, var(--ab-warm) 12%, var(--ab-surface));
}

.ab-record-notice p {
  margin: 0;
}

.ab-entry-layout {
  display: grid;
  grid-template-columns: minmax(180px, 3fr) minmax(0, 8fr);
  gap: clamp(36px, 7vw, 108px);
  align-items: start;
}

.ab-entry-aside {
  position: sticky;
  inset-block-start: calc(var(--ab-nav-height) + 24px);
  display: grid;
  gap: 28px;
}

.ab-entry-aside > div {
  padding-block-end: 20px;
  border-block-end: 1px solid var(--ab-line);
}

.ab-entry-body {
  max-inline-size: 760px;
  font-size: clamp(17px, 1.3vw, 20px);
  line-height: 1.75;
}

.ab-entry-body > :first-child {
  margin-block-start: 0;
}

.ab-entry-body h2,
.ab-entry-body h3,
.ab-entry-body h4 {
  margin-block-start: 2.2em;
  line-height: 1.2;
}

.ab-entry-body h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(30px, 3vw, 44px);
  font-weight: 500;
}

.ab-entry-body h3 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(24px, 2.2vw, 34px);
  font-weight: 500;
}

.ab-entry-body blockquote {
  margin-inline: 0;
  padding-inline-start: 1.2rem;
  border-inline-start: 3px solid var(--ab-warm);
}

.ab-entry-body pre,
.ab-entry-body code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
}

.ab-entry-body pre {
  overflow-x: auto;
  padding: 16px;
  border: 1px solid var(--ab-line);
}

.ab-entry-body img {
  max-inline-size: 100%;
  block-size: auto;
}

@media (max-width: 900px) {
  .ab-principle {
    grid-column: span 8;
    min-block-size: 180px;
  }

  .ab-about-form .ab-span-5,
  .ab-about-form .ab-offset-right,
  .ab-founder-section .ab-span-4,
  .ab-founder-section .ab-offset-right {
    grid-column: span 8;
  }

  .ab-library-shelves {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ab-entry-layout {
    grid-template-columns: 1fr;
  }

  .ab-entry-aside {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .ab-principle,
  .ab-about-form .ab-span-5,
  .ab-about-form .ab-offset-right,
  .ab-founder-section .ab-span-4,
  .ab-founder-section .ab-offset-right {
    grid-column: span 4;
  }

  .ab-library-shelves {
    grid-template-columns: 1fr;
  }

  .ab-entry-aside {
    grid-template-columns: 1fr;
  }

  .ab-entry-meta {
    grid-column: span 4;
    margin-block-start: 28px;
  }
}

@media (forced-colors: active) {
  .ab-principle,
  .ab-shelf-card,
  .ab-chip,
  .ab-entry-meta > div,
  .ab-entry-aside > div,
  .ab-record-notice {
    border-color: CanvasText;
  }

  .ab-shelf-card:hover,
  .ab-shelf-card:focus-visible,
  .ab-shelf-card.is-active,
  .ab-record-notice {
    background: Canvas;
    color: CanvasText;
  }
}