/* Hallmark · genre: editorial · macrostructure: Long Document · design-system: design.md
 * audience: Rick · use: copy the 12 actions into email, then run the detailed plan · tone: austere, owner-led, transaction-ready
 * enrichment: none; typography + exact EPL mark · nav: N1a (left/right, text links, not sticky) · footer: Ft4 (sans, single block, date + attribution)
 * pre-emit critique: P5 H5 E5 S5 R5 V5
 * slop test: 58/58 · contrast: pass (40–41) · honest/chrome/tokens: pass (46–48)
 * mobile: pass (34, 49–57) · no horizontal overflow at 320/375/414/768/1280
 */

:root {
  --detail-paper: var(--color-brand-paper);
  --detail-paper-alt: var(--color-brand-paper-warm);
  --detail-ink: var(--color-brand-charcoal);
  --detail-muted: var(--color-brand-ink-soft);
  --detail-rule: var(--color-brand-rule);
  --detail-accent: var(--color-brand-blue-deep);
  --detail-highlight: var(--color-brand-champagne);
  --detail-max: 78rem;
  --detail-measure: 65ch;
}

html {
  scroll-padding-block-start: var(--space-md);
}

body {
  min-width: 20rem;
  padding-block-end: 0;
  background: var(--detail-paper);
  color: var(--detail-ink);
}

.document-shell {
  width: min(100%, var(--detail-max));
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 3rem);
}

.detail-nav {
  display: flex;
  min-height: 4.25rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  border-block-end: var(--rule-hair) solid var(--detail-rule);
}

.detail-nav__brand {
  display: grid;
  min-width: 0;
  min-height: 2.75rem;
  place-items: center start;
}

.detail-nav__brand img {
  width: clamp(6.25rem, 22vw, 10rem);
  height: auto;
}

.detail-nav nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.detail-nav nav a,
.detail-footer a {
  color: var(--detail-ink);
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.document-hero {
  display: grid;
  gap: var(--space-sm);
  padding-block: clamp(3rem, 8vw, 6rem) clamp(2.5rem, 6vw, 4.5rem);
}

.document-hero > p:first-child,
.email-summary header p,
.step-index > p {
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.document-hero h1 {
  max-width: 15ch;
  font-size: clamp(2.5rem, 7vw, 4.75rem);
  font-weight: 300;
  letter-spacing: -0.045em;
  line-height: 1.02;
  text-wrap: balance;
}

.document-hero > p:last-child {
  max-width: 43ch;
  color: var(--detail-muted);
  font-size: var(--text-brand-md);
  line-height: 1.5;
}

.email-summary {
  display: grid;
  gap: var(--space-lg);
  padding: clamp(1.25rem, 4vw, 2.5rem);
  border-block: var(--rule-hair) solid var(--detail-highlight);
  background: var(--detail-paper-alt);
  scroll-margin-block-start: var(--space-md);
}

.email-summary header {
  display: grid;
  gap: var(--space-md);
}

.email-summary header > div:first-child {
  display: grid;
  gap: var(--space-xs);
}

.email-summary h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.email-summary__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
}

.copy-button,
.email-summary__actions a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs) var(--space-md);
  border: var(--rule-hair) solid var(--detail-ink);
  border-radius: var(--brand-radius-fine);
  background: var(--detail-ink);
  color: var(--color-brand-white);
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-sm);
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color var(--dur-short) var(--ease-out),
    color var(--dur-short) var(--ease-out),
    transform var(--dur-micro) var(--ease-out);
}

.email-summary__actions a {
  background: transparent;
  color: var(--detail-ink);
}

.copy-button:active,
.email-summary__actions a:active {
  transform: translateY(1px);
}

.copy-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.copy-button[data-state="loading"] {
  cursor: wait;
}

.copy-button[data-state="error"] {
  border-color: var(--color-brand-error);
  background: transparent;
  color: var(--color-brand-error);
}

.copy-button[data-state="success"] {
  border-color: var(--color-brand-success);
  background: transparent;
  color: var(--color-brand-success);
}

.email-summary__subject {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  max-width: none;
  padding-block-end: var(--space-sm);
  border-block-end: var(--rule-hair) solid var(--detail-highlight);
  color: var(--detail-muted);
}

.email-summary__subject strong {
  color: var(--detail-ink);
  font-family: var(--font-brand-display);
}

.email-lines {
  display: grid;
  gap: var(--space-sm);
  max-width: var(--detail-measure);
  padding-inline-start: 1.5rem;
}

.email-lines li {
  padding-inline-start: var(--space-xs);
  line-height: 1.55;
}

.email-lines li::marker {
  color: var(--detail-accent);
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-sm);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.copy-status {
  min-height: 1.5em;
  color: var(--detail-muted);
  font-size: var(--text-brand-sm);
}

.document-grid {
  display: grid;
  gap: var(--space-2xl);
  padding-block: clamp(4rem, 9vw, 7rem);
}

.step-index {
  min-width: 0;
}

.step-index > p {
  margin-block-end: var(--space-sm);
}

.step-index ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3xs) var(--space-sm);
  padding: 0;
  list-style: none;
}

.step-index a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  gap: var(--space-xs);
  border-block-end: var(--rule-hair) solid var(--detail-rule);
  color: var(--detail-ink);
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-xs);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.step-index a span {
  color: var(--detail-accent);
  font-variant-numeric: tabular-nums;
}

.step-document {
  display: grid;
}

.step-detail {
  display: grid;
  gap: var(--space-lg);
  max-width: var(--detail-measure);
  padding-block: var(--space-xl) var(--space-2xl);
  border-block-start: var(--rule-hair) solid var(--detail-rule);
  scroll-margin-block-start: var(--space-md);
}

.step-detail:first-child {
  padding-block-start: 0;
  border-block-start: 0;
}

.step-detail h2 {
  max-width: 20ch;
  font-size: clamp(1.7rem, 4vw, 2.65rem);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.step-detail h2 span {
  color: var(--detail-accent);
  font-variant-numeric: tabular-nums;
}

.step-detail__summary {
  color: var(--detail-muted);
  font-size: var(--text-brand-md);
  line-height: 1.55;
}

.step-detail__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  padding-block: var(--space-sm);
  border-block: var(--rule-hair) solid var(--detail-rule);
}

.step-detail__meta div {
  display: grid;
  gap: var(--space-3xs);
}

.step-detail__meta dt,
.step-detail h3,
.verified-links > p,
.channel-directory span,
.done-line strong {
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-xs);
  font-weight: 600;
  letter-spacing: 0.09em;
  line-height: 1.35;
  text-transform: uppercase;
}

.step-detail__meta dd {
  color: var(--detail-muted);
  line-height: 1.4;
}

.step-detail h3 {
  margin-block-end: calc(var(--space-sm) * -1);
}

.action-list {
  display: grid;
  gap: var(--space-sm);
  padding-inline-start: 1.5rem;
}

.action-list li {
  padding-inline-start: var(--space-xs);
  line-height: 1.6;
}

.action-list li::marker {
  color: var(--detail-accent);
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-sm);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.verified-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
  padding-block: var(--space-sm);
  border-block: var(--rule-hair) solid var(--detail-rule);
}

.verified-links > p {
  flex-basis: 100%;
}

.verified-links a,
.optional-note a {
  color: var(--detail-accent);
  font-weight: 700;
  text-underline-offset: 0.22em;
  white-space: nowrap;
}

.channel-directory {
  display: grid;
  border-block-start: var(--rule-hair) solid var(--detail-rule);
}

.channel-directory a {
  display: grid;
  min-height: 3.5rem;
  grid-template-columns: minmax(5rem, 0.75fr) minmax(0, 1.8fr) auto;
  align-items: center;
  gap: var(--space-sm);
  border-block-end: var(--rule-hair) solid var(--detail-rule);
  color: var(--detail-ink);
  text-decoration: none;
}

.channel-directory strong {
  min-width: 0;
  font-family: var(--font-brand-display);
  font-size: var(--text-brand-sm);
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
}

.channel-directory b {
  color: var(--detail-accent);
  font-size: var(--text-brand-md);
  font-weight: 300;
}

.optional-note {
  color: var(--detail-muted);
  font-size: var(--text-brand-sm);
}

.done-line {
  padding-inline-start: var(--space-md);
  border-inline-start: 0.25rem solid var(--detail-highlight);
  color: var(--detail-muted);
  line-height: 1.55;
}

.done-line strong {
  display: block;
  margin-block-end: var(--space-3xs);
  color: var(--detail-ink);
}

.detail-footer {
  display: grid;
  gap: var(--space-md);
  padding-block: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--detail-rule);
}

.detail-footer p {
  max-width: 88ch;
  color: var(--detail-muted);
  font-size: var(--text-brand-xs);
  line-height: 1.65;
}

@media (hover: hover) and (pointer: fine) {
  .detail-nav nav a:hover,
  .detail-footer a:hover,
  .step-index a:hover,
  .verified-links a:hover,
  .optional-note a:hover {
    color: var(--detail-accent);
  }

  .copy-button:hover {
    background: var(--detail-accent);
  }

  .email-summary__actions a:hover {
    background: var(--detail-ink);
    color: var(--color-brand-white);
  }

  .channel-directory a:hover {
    background: var(--color-brand-blue-pale);
  }
}

@media (min-width: 40rem) {
  .detail-nav {
    min-height: 5rem;
  }

  .detail-nav nav {
    gap: var(--space-lg);
  }

  .detail-nav nav a,
  .detail-footer a {
    font-size: var(--text-brand-sm);
  }

  .email-summary header {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .email-summary__actions {
    justify-content: end;
  }

  .step-index ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 60rem) {
  .document-grid {
    grid-template-columns: minmax(10rem, 0.7fr) minmax(0, 2.3fr);
    gap: clamp(3rem, 8vw, 7rem);
    align-items: start;
  }

  .step-index {
    position: sticky;
    inset-block-start: var(--space-lg);
  }

  .step-index ol {
    grid-template-columns: 1fr;
  }

  .step-detail {
    padding-block: var(--space-2xl) var(--space-3xl);
  }

  .step-detail:first-child {
    padding-block-start: 0;
  }

  .detail-footer {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (pointer: coarse) {
  .detail-nav a,
  .copy-button,
  .email-summary__actions a,
  .step-index a,
  .channel-directory a,
  .detail-footer a {
    min-height: 2.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .copy-button,
  .email-summary__actions a {
    transition-duration: 0.01ms;
  }
}