/* ==========================================================================
   Specula One — About
   Editorial founder story on the current ivory system. Same Specula,
   different page: one narrow reading column, one dark passage for the
   career arc, no imagery. Depends on tokens.css, hero-prototype.css
   (base, nav, mobile menu, buttons, focus) and phase3.css (footer).
   ========================================================================== */

/* Bronze deep enough to clear WCAG AA on ivory. The shared --bronze
   measures 2.73:1 on --ivory, so small bronze text needs a darker step.
   Defined here rather than in tokens.css so the homepage is unaffected. */
:root { --bronze-deep: #82673F; }

/* ---------- reading column ---------- */

/* Gutters sit outside the measure so the text column stays a true 62ch
   rather than 62ch minus two 8vw gutters. */
.about-col {
  max-width: calc(62ch + 2 * var(--space-gutter));
  margin: 0 auto;
  padding: 0 var(--space-gutter);
}

.about-intro,
.about-method,
.about-close {
  background: var(--ivory);
  color: var(--ink);
}

.about-intro { padding: var(--space-section) 0 0; }
.about-method { padding: calc(var(--space-section) * 0.9) 0; }

/* The masthead and the opening narrative are one continuous unit, so the
   join between them is a beat rather than a full section break. */
.about-intro + .about-method { padding-top: calc(var(--space-section) * 0.5); }
.about-close { padding: 0 0 var(--space-section); }

/* ---------- masthead ---------- */

.about-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(30px, 3.4vw, 46px);
  line-height: 1.18;
  color: var(--ink);
  margin: 0 0 28px;
  max-width: 18ch;
}

.about-byline {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--stone-line);
}

.about-byline-initials {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink);
}

.about-byline-role {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bronze-deep);
}

/* ---------- body copy ---------- */

.about-body p {
  font-size: var(--fs-body);
  line-height: 1.72;
  color: var(--ink);
  margin: 0 0 26px;
}

.about-body p:last-child { margin-bottom: 0; }

/* A single-sentence paragraph carries a beat on its own, so it gets air
   rather than a heading. */
.about-body .about-beat {
  color: var(--ink-dim);
  margin: 34px 0;
}

.about-quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(21px, 2.2vw, 27px);
  line-height: 1.4;
  color: var(--ink);
  margin: 38px 0;
  padding-left: 22px;
  border-left: 2px solid var(--bronze);
}

/* ---------- career arc, the one dark passage ---------- */

.about-arc {
  background: var(--charcoal);
  color: var(--paper);
  padding: var(--space-section) 0;
}

.about-arc .eyebrow { color: var(--bronze-soft); }

/* Bronze on ivory needs the deeper step to stay legible at 12px. */
.about-intro .eyebrow-light { color: var(--bronze-deep); }

.about-arc-lead {
  font-family: var(--serif);
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.3;
  color: var(--paper);
  margin: 0 0 44px;
  max-width: 22ch;
}

.about-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.about-tl-step {
  padding: 22px 0;
  border-top: 1px solid var(--charcoal-line);
}

.about-tl-step:last-of-type { border-bottom: 1px solid var(--charcoal-line); }

.about-tl-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bronze-soft);
  margin-bottom: 8px;
}

.about-tl-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper-dim);
}

/* ---------- signoff and close ---------- */

.about-signoff {
  padding-top: 24px;
  border-top: 1px solid var(--stone-line);
}

.about-signoff-name {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bronze-deep);
  margin-bottom: 6px;
}

.about-signoff-line {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
}

.about-cta {
  margin-top: 40px;
  padding-top: 34px;
  border-top: 1px solid var(--stone-line);
}

/* ---------- footer contrast, About-scoped ----------
   phase3.css sets .footer-light to --ink-faint, which measures 2.38:1 on
   ivory. Deepened here for About only so the homepage is untouched. */

.footer-light { color: var(--ink-dim); }

/* ---------- accessibility helper ---------- */

.vh {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .about-title { max-width: none; }
  .about-arc-lead { max-width: none; }
}

@media (max-width: 560px) {
  .about-byline { flex-direction: column; gap: 6px; }
  .about-quote { padding-left: 16px; margin: 30px 0; }
}