/* =========================================================
   LIBRARY OF PHILOSOPHY — THINKERS PAGE REFINEMENT LAYER
   Load AFTER style.css and home-refine.css:
     <link rel="stylesheet" href="style.css">
     <link rel="stylesheet" href="home-refine.css">
     <link rel="stylesheet" href="thinkers-refine.css">
   Paragraph typography is intentionally left untouched.
   ========================================================= */

:root {
  --portrait-size: clamp(150px, 17vw, 230px);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- 1. Anchor offset under the sticky navbar ---------- */
html { scroll-behavior: smooth; }
.thinker,
.thinker-era,
section[id] { scroll-margin-top: clamp(72px, 12vh, 110px); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---- 2. Screen-reader-only helper ---------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  clip-path: inset(50%); white-space: nowrap;
}
.skip-link:focus {
  position: fixed; inset-inline-start: 1rem; inset-block-start: 1rem;
  z-index: 9999; padding: .6rem 1rem; border-radius: 6px;
  background: var(--gold, #b88a44); color: #14100b; font-weight: 600;
}


/* ---- 4. Era rhythm ------------------------------------- */
.thinker-era {
  padding-block: clamp(1.5rem, 4vw, 3rem);
}
.era-divider {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  gap: 1rem;
  margin-block: clamp(1.2rem, 3vw, 2.4rem);
  text-align: center;
}
.era-divider::before,
.era-divider::after {
  content: ""; flex: 1 1 0;
  height: 1px;
  background: linear-gradient(to right, transparent, color-mix(in srgb, var(--gold, #b88a44) 55%, transparent), transparent);
}
.era-divider span {
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  letter-spacing: .06em;
  white-space: nowrap;
}

/* ---- 5. Thinker cards ---------------------------------- */
.thinker-list {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 4vw, 3rem);
  width: min(1150px, 92vw);
  margin-inline: auto;
}

.thinker {
  display: grid;
  grid-template-columns: var(--portrait-size) minmax(0, 1fr);
  align-items: start;
  gap: clamp(1.2rem, 3vw, 2.6rem);
  padding: clamp(1.1rem, 2.6vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--gold, #b88a44) 18%, transparent);
  border-radius: 16px;
  background: color-mix(in srgb, #ffffff 4%, transparent);
  transition: border-color .3s var(--ease-out), transform .3s var(--ease-out);
}
.thinker:hover {
  border-color: color-mix(in srgb, var(--gold, #b88a44) 42%, transparent);
}

/* Alternate the portrait side so the long list never feels flat */
@media (min-width: 861px) {
  .thinker:nth-child(even) {
    grid-template-columns: minmax(0, 1fr) var(--portrait-size);
  }
  .thinker:nth-child(even) .thinker-portrait { order: 2; }
}

/* ---- 6. PORTRAITS: perfect circles, never ovals -------- */
.thinker-portrait {
  margin: 0;
  width: var(--portrait-size);
  aspect-ratio: 1 / 1;          /* square box => circular mask */
  border-radius: 50%;
  overflow: hidden;
  flex: 0 0 auto;
  position: sticky;
  top: clamp(110px, 16vh, 150px);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--gold, #b88a44) 40%, transparent),
              0 14px 34px rgba(0, 0, 0, .35);
}
.thinker-portrait img,
.thinker > img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;            /* crops, never squashes */
  object-position: center top;  /* keeps faces in frame */
  border-radius: 50%;
  transition: transform .5s var(--ease-out);
}
.thinker:hover .thinker-portrait img { transform: scale(1.04); }

/* Safety net if the original (non-figure) markup is ever used */
.thinker > img {
  width: var(--portrait-size);
  height: var(--portrait-size);
}

@media (max-width: 860px) {
  .thinker { grid-template-columns: 1fr; justify-items: center; text-align: left; }
  .thinker-portrait { position: static; }
  .thinker-info { width: 100%; }
}

/* ---- 7. Info block: heading, dates, contributions ------ */
.thinker-info h2 {
  margin-block: 0 .2rem;
  line-height: 1.2;
}
.thinker-dates {
  margin-block: 0 .9rem;
  font-size: .92rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  opacity: .75;
}
.contrib-title {
  margin-block: 1.4rem .6rem;
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  opacity: .8;
}
.thinker-contributions {
  display: flex; flex-wrap: wrap; gap: .45rem;
  list-style: none; padding: 0; margin: 0 0 1.2rem;
}
.thinker-contributions li {
  padding: .3rem .75rem;
  font-size: .86rem;
  border: 1px solid color-mix(in srgb, var(--gold, #b88a44) 30%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--gold, #b88a44) 8%, transparent);
}

/* ---- 8. Quotes ----------------------------------------- */
.thinker-quote {
  margin: 0;
  padding: .9rem 0 .3rem 1.1rem;
  border-inline-start: 2px solid color-mix(in srgb, var(--gold, #b88a44) 55%, transparent);
}
.thinker-quote blockquote {
  margin: 0; border: 0; padding: 0;
  font-style: italic;
}
.thinker-quote figcaption {
  margin-top: .4rem;
  font-size: .82rem;
  letter-spacing: .06em;
  opacity: .7;
}

/* ---- 9. Closing sections ------------------------------- */
.questions ul {
  display: grid;
  gap: .6rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  width: min(950px, 92vw);
  margin-inline: auto;
  list-style: none; padding: 0;
  text-align: left;
}
.questions li {
  padding: .8rem 1rem;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--gold, #b88a44) 18%, transparent);
}
.cta-button {
  display: inline-block;
  margin-top: 1.4rem;
  padding: .8rem 1.6rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--gold, #b88a44) 55%, transparent);
  text-decoration: none;
  transition: background .25s var(--ease-out), transform .25s var(--ease-out);
}
.cta-button:hover { transform: translateY(-2px); background: color-mix(in srgb, var(--gold, #b88a44) 16%, transparent); }

/* ---- 10. Reveal on scroll ------------------------------ */
.js-motion .thinker,
.js-motion .era-divider {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
}
.js-motion .thinker.is-visible,
.js-motion .era-divider.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .js-motion .thinker,
  .js-motion .era-divider { opacity: 1; transform: none; transition: none; }
}

/* ---- 11. Focus visibility ------------------------------ */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--gold, #b88a44);
  outline-offset: 3px;
  border-radius: 6px;
}

/* =========================================================
   THINKERS — MOBILE SAFETY OVERRIDES
   Keeps the existing site design intact.
   ========================================================= */

@media (max-width: 860px) {

  /* Thinker cards stack normally on phones */
  .thinker {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: left;
  }

  /* Portrait should NOT stick on mobile */
  .thinker-portrait {
    position: static;
    width: min(220px, 70vw);
    height: auto;
  }

  .thinker-info {
    width: 100%;
  }