/* ==========================================================================
   Learning Design Compass™ — Site Styles
   Design language: a navigator's chart. Deep chart-navy, aged brass
   instrument accents, verdigris highlights, parchment reserved only for
   passages quoted directly from the Workbook and the book.
   ========================================================================== */

:root {
  /* Color */
  --navy:        #122335;
  --navy-deep:   #0b1521;
  --navy-soft:   #1b3049;
  --brass:       #b8863b;
  --brass-light: #d7ad6c;
  --verdigris:   #4c7a6e;
  --verdigris-light: #7fa89c;
  --paper:       #ece9df;
  --paper-line:  #d9d5c6;
  --parchment:   #e4d9bc;
  --ink:         #1d2420;
  --ink-soft:    #4a5049;
  --fog:         #e9ecea;
  --fog-dim:     rgba(233,236,234,0.72);
  --line-on-dark: rgba(233,236,234,0.16);

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;

  /* Layout */
  --max: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

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

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 1000;
  background: var(--brass); color: var(--navy-deep); padding: 0.75rem 1.25rem;
  font-family: var(--font-mono); font-size: 0.85rem; text-decoration: none;
}
.skip-link:focus { left: 1rem; top: 1rem; }

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brass);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--brass);
  display: inline-block;
}
.on-dark .eyebrow { color: var(--brass-light); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  margin: 0;
  color: var(--ink);
}
.on-dark h1, .on-dark h2, .on-dark h3 { color: var(--fog); }

h1 { font-size: clamp(2.4rem, 5.2vw, 4.1rem); font-weight: 500; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

.lede {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 46ch;
}
.on-dark .lede { color: var(--fog-dim); }

.section {
  padding: clamp(4rem, 9vw, 7.5rem) 0;
}
.section-head {
  max-width: 640px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section-head h2 { margin-top: 0.9rem; }
.section-head p { margin-top: 1.1rem; }

.on-dark { background: var(--navy); color: var(--fog); }
.on-dark p { color: var(--fog-dim); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95em 1.6em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brass); color: var(--navy-deep); }
.btn-primary:hover { background: var(--brass-light); }
.btn-ghost {
  border-color: var(--line-on-dark);
  color: var(--fog);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--brass); color: var(--brass-light); }
.on-light .btn-ghost { border-color: rgba(29,36,32,0.25); color: var(--ink); }
.on-light .btn-ghost:hover { border-color: var(--brass); color: var(--brass); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.2rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(233,236,234,0.08);
  /* No backdrop-filter/transform/background here: any of those would
     create a new containing block, so this header's position:fixed
     mobile menu would position itself relative to the header (76px
     tall) instead of the viewport. The frosted background lives on
     ::before instead, which does not affect descendant positioning. */
}
.site-header {
  --header-bg: rgba(11, 21, 33, 0.72);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  transition: background 0.3s ease;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  position: relative;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--fog);
}
.brand svg { width: 30px; height: 30px; flex-shrink: 0; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand-word small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  color: var(--brass-light);
  margin-top: 1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.1rem;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--fog-dim);
  position: relative;
  padding-bottom: 4px;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--fog); }
.nav-links a::after {
  content: "";
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--brass);
  transition: right 0.25s ease;
}
.nav-links a:hover::after { right: 0; }

.nav-cta {
  font-family: var(--font-mono) !important;
  font-size: 0.78rem !important;
  padding: 0.6em 1.1em;
  border: 1px solid var(--brass);
  color: var(--brass-light) !important;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav-cta:hover { background: var(--brass); color: var(--navy-deep) !important; }

.nav-toggle {
  display: none;
  background: none; border: none;
  color: var(--fog);
  width: 40px; height: 40px;
  cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 880px) {
  .nav-links { 
    position: fixed; inset: 76px 0 0 0;
    background: var(--navy-deep);
    flex-direction: column;
    justify-content: flex-start;
    padding: 2.5rem var(--gutter);
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.1rem; }
  .nav-toggle { display: block; }
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(ellipse at 80% 20%, rgba(76,122,110,0.16), transparent 55%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
  position: relative;
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero-copy h1 { margin-top: 1rem; }
.hero-copy .lede { margin-top: 1.4rem; }
.hero-tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--brass-light);
  font-size: 1.15rem;
  margin-top: 1.1rem;
}

.compass-stage { position: relative; display: flex; justify-content: center; }
.compass-wrap { width: min(100%, 440px); position: relative; }
#compass-svg { width: 100%; height: auto; }
.bearing-tick { cursor: pointer; }
.bearing-tick text { font-family: var(--font-mono); }
.bearing-label {
  fill: var(--fog-dim);
  font-size: 8.5px;
  letter-spacing: 0.06em;
  transition: fill 0.2s ease;
}
.bearing-tick:hover .bearing-label,
.bearing-tick.active .bearing-label { fill: var(--brass-light); }
.bearing-dot { fill: var(--brass); transition: r 0.2s ease, fill 0.2s ease; }
.bearing-tick:hover .bearing-dot,
.bearing-tick.active .bearing-dot { fill: var(--fog); r: 4.5; }
#needle {
  transform-origin: 150px 150px;
  transition: transform 0.9s cubic-bezier(0.34, 1.1, 0.4, 1);
}
.compass-caption {
  text-align: center;
  margin-top: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--fog-dim);
  text-transform: uppercase;
}
#compass-reading { color: var(--brass-light); }

/* ---------- Discover intro band ---------- */
.discover {
  background: var(--paper);
  border-bottom: 1px solid var(--paper-line);
}
.discover .wrap {
  display: grid;
  grid-template-columns: 0.6fr 1.4fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.discover-mark {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--brass);
  border-left: 2px solid var(--brass);
  padding-left: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---------- Bearings ---------- */
.bearings-list {
  list-style: none;
  margin: 0; padding: 0;
  border-top: 1px solid var(--paper-line);
}
.bearing-row {
  display: grid;
  grid-template-columns: 90px 1fr 1.4fr;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: baseline;
  padding: clamp(1.6rem, 3vw, 2.4rem) 0;
  border-bottom: 1px solid var(--paper-line);
}
.bearing-deg {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--brass);
  font-variant-numeric: tabular-nums;
}
.bearing-name { font-size: clamp(1.2rem, 2vw, 1.5rem); }
.bearing-desc { color: var(--ink-soft); font-size: 0.98rem; max-width: 52ch; }

@media (max-width: 720px) {
  .bearing-row { grid-template-columns: 60px 1fr; }
  .bearing-desc { grid-column: 1 / -1; }
}

/* ---------- Parchment quote ---------- */
.quote-band {
  background: var(--navy);
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}
.parchment-card {
  background: var(--parchment);
  color: var(--ink);
  padding: clamp(2.2rem, 5vw, 3.8rem);
  border-radius: 1px;
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}
.parchment-card::before {
  content: "”";
  font-family: var(--font-display);
  position: absolute;
  top: -0.3em; left: 0.3em;
  font-size: 6rem;
  color: rgba(184,134,59,0.35);
  line-height: 1;
}
.parchment-card blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.4;
}
.parchment-card cite {
  display: block;
  margin-top: 1.4rem;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- Library / Books ---------- */
.library { background: var(--paper); }
.book-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2rem, 4vw, 3rem);
}
@media (max-width: 800px) {
  .book-grid { grid-template-columns: 1fr; }
}
.book-card {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1.6rem;
  padding: 1.8rem;
  background: #fff;
  border: 1px solid var(--paper-line);
}
.book-cover {
  aspect-ratio: 5 / 7.5;
  background: var(--navy);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0.9rem;
  border: 1px solid rgba(184,134,59,0.5);
  color: var(--fog);
  overflow: hidden;
}
.book-cover::after {
  content: "";
  position: absolute; inset: 6px;
  border: 1px solid rgba(184,134,59,0.35);
  pointer-events: none;
}
.book-cover .vol {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  color: var(--brass-light);
  text-transform: uppercase;
}
.book-cover .title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  line-height: 1.15;
  font-weight: 600;
}
.book-cover .sub {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.03em;
  color: var(--fog-dim);
  line-height: 1.4;
}
.book-cover.workbook { background: var(--navy-soft); }
.book-cover .mark {
  align-self: center;
  width: 46px; height: 46px; margin: 0.4rem 0;
}

.book-body h3 { margin-bottom: 0.3rem; }
.book-kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--verdigris);
}
.book-meta {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-soft);
  display: flex; flex-direction: column; gap: 0.25rem;
}
.book-body .btn { margin-top: 1.3rem; }

/* ---------- About ---------- */
.about .wrap {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.monogram {
  width: 160px; height: 160px;
  border-radius: 50%;
  border: 2px solid var(--brass);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--brass);
  position: relative;
}
.monogram::before {
  content: "";
  position: absolute; inset: 10px;
  border: 1px solid rgba(184,134,59,0.4);
  border-radius: 50%;
}
.about-quote {
  margin-top: 1.6rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ink);
  border-left: 2px solid var(--brass);
  padding-left: 1.1rem;
}
@media (max-width: 700px) {
  .about .wrap { grid-template-columns: 1fr; }
}

/* ---------- Contact / CTA ---------- */
.contact { background: var(--navy-deep); }
.contact .wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 5vw, 4rem);
}
.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.contact-form label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fog-dim);
  display: block;
  margin-bottom: 0.4rem;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(233,236,234,0.05);
  border: 1px solid var(--line-on-dark);
  color: var(--fog);
  padding: 0.85em 1em;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--brass);
}
.contact-form textarea { resize: vertical; min-height: 110px; }
.contact-direct {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  justify-content: center;
}
.contact-direct a.email-link {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--brass-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(184,134,59,0.4);
  padding-bottom: 0.3rem;
  width: fit-content;
}
.contact-direct a.email-link:hover { border-color: var(--brass-light); }
.form-note {
  font-size: 0.8rem;
  color: var(--fog-dim);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep);
  border-top: 1px solid var(--line-on-dark);
  padding: clamp(2.5rem, 5vw, 3.5rem) 0 2rem;
  color: var(--fog-dim);
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-on-dark);
}
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.6rem; list-style: none; margin: 0; padding: 0; }
.footer-nav a { text-decoration: none; color: var(--fog-dim); font-size: 0.88rem; }
.footer-nav a:hover { color: var(--brass-light); }

.hashtags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.8rem;
}
.hashtags span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--verdigris-light);
  background: rgba(76,122,110,0.12);
  border: 1px solid rgba(76,122,110,0.3);
  padding: 0.3em 0.7em;
  border-radius: 999px;
}

.footer-bottom {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
}
.footer-bottom .tm-note { max-width: 60ch; color: rgba(233,236,234,0.5); }

/* ---------- Reveal-on-scroll ----------
   Content is visible by default (works with no JS / slow JS).
   JS opts an element into the pre-reveal state only once it has
   an IntersectionObserver ready to bring it back in on scroll. */
.reveal { transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.pre-reveal { opacity: 0; transform: translateY(18px); }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ---------- Responsive tweaks ---------- */
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .compass-stage { order: -1; margin-bottom: 1rem; }
  .compass-wrap { width: min(70%, 320px); }
  .discover .wrap { grid-template-columns: 1fr; }
  .about .wrap { grid-template-columns: 1fr; }
  .contact .wrap { grid-template-columns: 1fr; }
  .book-card { grid-template-columns: 110px 1fr; }
}