/* =========================================================
   AR.dev - About page
   Page-specific layout only. Shared heroes, headings, cards,
   panels and links live in styles.css.
========================================================= */

.about-page {
  overflow-x: clip;
}

/* Hero */

.about-hero-copy {
  max-width: 850px;
}

.about-hero h1 {
  max-width: 850px;
}

.about-hero-note > p {
  position: relative;
  z-index: 1;
  max-width: 260px;
  margin-top: 36px;
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.045em;
}

.about-note-mark {
  align-self: flex-end;
  margin-top: 12px;
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: -0.1em;
  opacity: 0.16;
  transition: opacity 320ms ease;
}

.about-note-mark span {
  color: var(--color-accent-dark);
}

@media (hover: hover) {
  .about-hero-note:hover .about-note-mark {
    opacity: 0.34;
  }
}

/* Story sections */

.about-story {
  padding-block: var(--section-space);
}

.about-story-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  align-items: start;
  gap: clamp(36px, 8vw, 120px);
}

.about-section-intro {
  position: sticky;
  top: calc(var(--header-height) + 28px);
}

.about-copy {
  max-width: 720px;
}

.about-copy p {
  font-size: 1rem;
  line-height: 1.9;
}

.about-copy p + p {
  margin-top: 20px;
}

/* Each block opens with a stronger lead paragraph */
.about-copy > p:first-child {
  color: var(--color-ink);
  font-size: clamp(1.05rem, 1.4vw, 1.15rem);
  line-height: 1.85;
}

/* Quote */

.about-quote {
  padding-block: var(--section-space);
}

.about-quote-inner {
  position: relative;
  overflow: hidden;
}

.about-quote blockquote {
  max-width: 1000px;
  margin-top: clamp(28px, 4vw, 44px);
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.3vw, 4.8rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.07em;
  text-wrap: balance;
}

.about-quote blockquote span {
  position: relative;
  isolation: isolate;
  white-space: nowrap;
}

.about-quote blockquote span::after {
  position: absolute;
  right: 0;
  bottom: 0.02em;
  left: 0;
  z-index: -1;
  height: 0.18em;
  transform-origin: 0 50%;
  border-radius: 999px;
  background: var(--color-accent);
  content: "";
  opacity: 0.75;
}

.about-quote-caption {
  margin-top: 28px;
  font-size: 0.9rem;
}

/* The highlight draws in once as the quote scrolls into view */
@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) {
    .about-quote blockquote span::after {
      animation: about-highlight linear both;
      animation-timeline: view();
      animation-range: entry 25% cover 45%;
    }

    @keyframes about-highlight {
      from {
        transform: scaleX(0);
      }

      to {
        transform: scaleX(1);
      }
    }
  }
}

/* Approach and "beyond the screen" */

.about-approach {
  padding-top: clamp(64px, 8vw, 96px);
}

.about-approach + .about-approach {
  padding-top: 0;
}

.about-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: clamp(44px, 7vw, 86px);
}

.about-principle {
  min-height: 245px;
  padding: clamp(22px, 3vw, 32px);
}

.about-principle-number {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  transition: color var(--transition-fast);
}

.about-principle h3 {
  margin-top: 40px;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  line-height: 1.15;
  letter-spacing: -0.05em;
}

.about-principle p {
  margin-top: 14px;
  font-size: 0.92rem;
  line-height: 1.75;
}

@media (hover: hover) {
  .about-principle:hover .about-principle-number {
    color: var(--color-ink);
  }
}

/* What comes next */

.about-outlook {
  padding-block: var(--section-space);
}

.about-outlook-heading {
  max-width: 920px;
}

.about-outlook-body {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(250px, 0.8fr);
  align-items: start;
  gap: clamp(40px, 8vw, 120px);
  margin-top: clamp(38px, 6vw, 68px);
}

.about-next {
  padding: clamp(24px, 3vw, 34px);
}

.about-next p {
  margin-top: 24px;
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 2vw, 1.7rem);
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: -0.04em;
}

.about-next .text-link {
  margin-top: 28px;
}

/* Responsive */

@media (max-width: 900px) {
  .about-story-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .about-section-intro {
    position: static;
    max-width: 700px;
  }

  .about-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* A lone last card spans the row instead of leaving a gap */
  .about-principle:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    min-height: 200px;
  }

  .about-outlook-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .about-next {
    max-width: 620px;
  }
}

@media (max-width: 600px) {
  .about-quote-inner {
    padding: 26px 22px;
    border-radius: var(--radius-lg);
  }

  .about-quote blockquote {
    font-size: clamp(1.9rem, 9vw, 3.1rem);
  }

  .about-principles {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-principle,
  .about-principle:last-child:nth-child(odd) {
    min-height: 0;
  }

  .about-principle h3 {
    margin-top: 28px;
  }

  .about-outlook-body {
    margin-top: 30px;
  }
}