/* ==========================================================================
   Shared site chrome for Prosody Trainer.
   Hoisted verbatim out of the inline <style> block in index.html so that the
   homepage and every Learn / Teach / Investigate page render from one source
   of truth. Design tokens live in style.css; link both, style.css first.
   ========================================================================== */

.site-shell {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  min-height: 100vh;
}
.site-shell header,
.site-shell main,
.site-shell footer {
  width: min(100% - 2.5rem, 1180px);
  margin-inline: auto;
}
.site-shell nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 1.35rem 0;
  font-size: 1rem;
}
.site-nav-links,
.site-footer-links,
.site-inline-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .7rem 1.2rem;
}
.site-shell nav a,
.site-footer-links a,
.site-inline-links a {
  color: var(--ink-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
}
.site-shell nav a { text-decoration: none; }
.site-shell nav a:hover,
.site-shell nav a:focus-visible,
.site-footer-links a:hover,
.site-footer-links a:focus-visible,
.site-inline-links a:hover,
.site-inline-links a:focus-visible { color: var(--glow-deep); }
.site-shell .brand-link {
  flex: 0 0 auto;
  font-weight: 750;
  color: var(--ink);
  text-decoration: none;
}
.site-shell .dot { color: var(--glow); }
.site-hero {
  max-width: 1040px;
  padding: clamp(3.6rem, 8vw, 6.5rem) 0 clamp(3.4rem, 7vw, 5.4rem);
}
.site-kicker {
  text-transform: uppercase;
  letter-spacing: .15em;
  color: var(--glow-deep);
  font-weight: 750;
  font-size: .82rem;
}
.site-hero h1 {
  max-width: 990px;
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 5.35rem);
  line-height: 1.025;
  letter-spacing: -.025em;
  text-wrap: balance;
  margin: .75rem 0 1.25rem;
}
.site-hero h1:focus { outline: none; }
.site-hero > p {
  max-width: 760px;
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(1.12rem, 2vw, 1.35rem);
  line-height: 1.6;
}
.site-reveal {
  margin-top: 2.35rem;
  display: grid;
  gap: .25rem;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.3;
}
.site-cta-row {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
}
.site-button {
  display: inline-flex;
  align-items: center;
  min-height: 3rem;
  padding: .75rem 1.45rem;
  border: 1px solid var(--boundary);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: .01em;
  text-decoration: none;
  transition: border-color 300ms var(--ease), box-shadow 300ms var(--ease), background 300ms var(--ease);
}
.site-button:hover,
.site-button:focus-visible {
  border-color: var(--glow);
  box-shadow: 0 0 0 4px var(--glow-halo);
}
.site-button.primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}
.site-button.primary:hover,
.site-button.primary:focus-visible {
  background: #171512;
  box-shadow: 0 0 0 4px var(--glow-halo);
}
.site-shell main > section {
  margin: 0;
  padding: 2.6rem 0;
  scroll-margin-top: 1.5rem;
}
.site-shell h2 {
  margin: 0 0 .65rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 2.55rem);
  line-height: 1.2;
}
.site-shell h3 { line-height: 1.25; }
.site-section-lede {
  max-width: 800px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
  line-height: 1.7;
}
.site-section-lede + .site-section-lede { margin-top: .75rem; }
.site-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}
.site-card {
  min-height: 220px;
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: inherit;
  text-decoration: none;
}
a.site-card {
  transition: border-color 300ms var(--ease), box-shadow 300ms var(--ease), transform 150ms var(--ease);
}
a.site-card:hover,
a.site-card:focus-visible {
  border-color: var(--glow);
  box-shadow: 0 10px 26px rgba(201, 138, 46, .14);
  transform: translateY(-2px);
}
.site-card h3 {
  margin: 0 0 .55rem;
  font-family: var(--serif);
  font-size: 1.55rem;
}
.site-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.6;
}
.site-tag {
  display: inline-block;
  margin-bottom: .75rem;
  color: var(--glow-deep);
  font-size: .84rem;
  font-weight: 750;
  letter-spacing: .01em;
}
.site-coming { color: var(--ink-soft); }
.site-card-upcoming { background: rgba(255,255,255,.55); }
.site-pup { background: linear-gradient(135deg, #fff, #F6ECDB); }
.site-card-action,
.site-status-note { font-size: .94rem; font-weight: 700; }
.site-card-action { color: var(--ink); }
.site-status-note { color: var(--ink-soft); }
.site-quote {
  margin: 2.4rem 0 1.6rem;
  padding: 1.8rem 2rem;
  background: #fff;
  border-left: 5px solid var(--glow);
  border-radius: 0 18px 18px 0;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  line-height: 1.35;
}
.site-grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem 2rem;
  margin-top: 1.65rem;
}
.site-grid-two h3 { margin: 0 0 .45rem; font-size: 1.08rem; }
.site-grid-two p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.7;
}
.site-publications {
  display: grid;
  gap: .9rem;
  margin-top: 1.6rem;
}
.site-publication {
  padding: 1.3rem 1.4rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
}
.site-publication h3 {
  margin: 0 0 .4rem;
  font-family: var(--serif);
  font-size: 1.3rem;
}
.site-publication p {
  margin: .25rem 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.6;
}
.site-publication a {
  display: inline-block;
  margin-top: .5rem;
  color: var(--glow-deep);
  font-weight: 700;
  text-underline-offset: .2em;
}
.site-about-panel {
  margin-top: 1.5rem;
  padding: clamp(1.45rem, 3vw, 2rem);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
}
.site-about-panel p {
  max-width: 870px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.03rem;
  line-height: 1.7;
}
.site-about-panel p + p { margin-top: .8rem; }
.site-about-panel address { margin-top: 1.2rem; font-style: normal; }
.site-shell footer {
  margin-top: 3rem;
  padding: 2.4rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: .95rem;
}
.site-footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.25rem 2rem;
  flex-wrap: wrap;
}
.site-footer-title { margin: 0; color: var(--ink); }
.site-footer-note { margin: .8rem 0 0; max-width: 760px; font-size: .9rem; }
@media (max-width: 800px) {
  .site-shell nav { align-items: flex-start; flex-direction: column; }
  .site-nav-links { gap: .55rem 1rem; }
  .site-hero { padding-top: 3.2rem; }
}
@media (max-width: 520px) {
  .site-shell header,
  .site-shell main,
  .site-shell footer { width: min(100% - 1.5rem, 1180px); }
  .site-cards { grid-template-columns: 1fr; }
  .site-card { min-height: 0; }
  .site-quote { padding: 1.4rem 1.35rem; }
}
@media (prefers-reduced-motion: reduce) {
  .site-button, a.site-card { transition: none; }
  a.site-card:hover, a.site-card:focus-visible { transform: none; }
}

/* Prominent replay control — the welcome tour is a teaching tool. */
.site-replay-cta { border-color: var(--glow); color: var(--glow-deep); font-weight: 700; }
.site-replay-cta::before { content: "\25B6"; font-size: .72em; margin-right: .55rem; }
.site-replay-cta:hover, .site-replay-cta:focus-visible { background: var(--glow-halo); border-color: var(--glow); }

/* Theoretical foundations reference list (collapsed by default). */
.site-theory-details { margin-top: 1.6rem; }
.site-theory-details > summary { cursor: pointer; font-weight: 700; color: var(--glow-deep); font-size: 1rem; }
.site-theory-details > summary:hover, .site-theory-details > summary:focus-visible { color: var(--ink); }
.site-theory-lede { max-width: 800px; margin: .8rem 0 1rem; color: var(--ink-soft); font-size: 1rem; line-height: 1.65; }
.site-theory-ref { margin: 0 0 .55rem; padding-left: 1.4rem; text-indent: -1.4rem; color: var(--ink-soft); font-size: .95rem; line-height: 1.55; }
.site-theory-ref a { color: var(--glow-deep); }

/* --------------------------------------------------------------------------
   Learn pages
   -------------------------------------------------------------------------- */

.site-prose { max-width: 68ch; }
.site-prose p { margin: 0 0 1.1rem; }
.site-prose h2 { margin-top: 2.8rem; }
.site-prose h3 { margin-top: 1.9rem; margin-bottom: .5rem; }

.learn-example {
  margin: 1.5rem 0 1.6rem;
  padding: 1.1rem 1.3rem;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--glow);
  border-radius: 0 12px 12px 0;
}

.learn-example p {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2.8vw, 1.3rem);
  line-height: 1.5;
  margin: 0 0 .5rem;
}

.learn-example p:last-child { margin-bottom: 0; }
.learn-example .learn-gloss {
  font-family: var(--sans);
  font-size: .92rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-top: .9rem;
}

.learn-bracket {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2.8vw, 1.3rem);
}

.learn-boundary { color: var(--glow-deep); font-weight: 700; padding: 0 .15em; }
.learn-stress { font-weight: 700; }

.learn-layers {
  margin: 1.4rem 0;
  padding: 0;
  list-style: none;
  font-family: var(--serif);
  font-size: 1.15rem;
}

.learn-layers li { padding: .18rem 0; color: var(--ink-soft); }
.learn-layers li.is-focus { color: var(--ink); font-weight: 700; }

.learn-refs p {
  font-size: .92rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 .75rem;
  padding-left: 1.6rem;
  text-indent: -1.6rem;
}

.learn-refs p.is-own { color: var(--ink); }