/* ═══════════════════════════════════════════════════════════
   ARCHITECT — Site Design System (Verdigris / Blueprint)
   Palette: neutral white/bone, black ink, oxidized-green accent only.
   No black or dark-surface sections anywhere on the site.
   Type: Instrument Serif (display) · Space Grotesk (labels) · DM Sans (body)
   Shape: hard squares only — border-radius is always 0.
   Signature: rough hand-inked borders (SVG turbulence filter, see
   .rough-frame) + drafting registration marks + faint blueprint grid.
   Every page that includes this file should also inline the filter
   defs near the top of <body>:
     <svg width="0" height="0" style="position:absolute" aria-hidden="true">
       <filter id="rough" x="-15%" y="-15%" width="130%" height="130%">
         <feTurbulence type="fractalNoise" baseFrequency="0.02" numOctaves="2" seed="5" result="n"/>
         <feDisplacementMap in="SourceGraphic" in2="n" scale="2.4" xChannelSelector="R" yChannelSelector="G"/>
       </filter>
     </svg>
   ═══════════════════════════════════════════════════════════ */

:root {
  /* Neutral surfaces — white/bone only, never dark */
  --cream:      #FCFCF9;
  --cream-2:    #F1F0E8;
  --stone:      rgba(20,23,17,0.28);
  --line:       rgba(43,90,71,0.30);

  /* Ink — black, cool undertone */
  --ink:        #12140F;
  --ink-soft:   #4B4E46;
  --ink-faint:  #888B80;

  /* Legacy dark-surface aliases — repointed to the light system so
     older markup using sec-dark / dark-ink / dark-soft keeps working
     without touching every HTML file's class list. Nothing on this
     site renders on an actual dark background anymore. */
  --dark:       var(--cream-2);
  --dark-2:     var(--cream-2);
  --dark-line:  var(--line);
  --dark-ink:   var(--ink);
  --dark-soft:  var(--ink-soft);

  /* Accent — one hue only: oxidized bronze-green */
  --gold:       #2B5A47;
  --gold-lt:    #3E7A61;
  --verdigris:      #2B5A47;
  --verdigris-deep: #17362A;
  --verdigris-soft: rgba(43,90,71,0.08);

  --serif: 'Instrument Serif', Georgia, serif;
  --grotesk: 'Space Grotesk', sans-serif;
  --sans: 'DM Sans', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; border-radius: 0 !important; }

html { scroll-behavior: smooth; }

body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(43,90,71,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43,90,71,0.05) 1px, transparent 1px);
  background-size: 36px 36px;
}

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

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* ── Drafting registration marks (signature motif) ─────────── */
.reg { position: fixed; width: 14px; height: 14px; pointer-events: none; z-index: 40; }
.reg::before, .reg::after { content: ''; position: absolute; background: var(--stone); }
.reg::before { left: 50%; top: 0; width: 1px; height: 100%; transform: translateX(-.5px); }
.reg::after { top: 50%; left: 0; height: 1px; width: 100%; transform: translateY(-.5px); }
.reg.tl { top: 16px; left: 16px; } .reg.tr { top: 16px; right: 16px; }
.reg.bl { bottom: 16px; left: 16px; } .reg.br { bottom: 16px; right: 16px; }
@media (max-width: 640px) { .reg { display: none; } }

/* ── Rough hand-inked frame (signature motif) ──────────────── */
.rough-frame { position: relative; }
.rough-frame::before {
  content: ''; position: absolute; inset: -5px;
  border: 1.5px solid var(--verdigris);
  filter: url(#rough);
  pointer-events: none;
}
.rough-frame.thick::before { border-width: 2px; }

/* ── Typography ─────────────────────────────────────────── */
.eyebrow {
  font-family: var(--grotesk);
  font-size: 10px; font-weight: 700;
  letter-spacing: .26em; text-transform: uppercase;
  color: var(--verdigris);
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 24px;
}
.eyebrow::before { content: ''; width: 24px; height: 1px; background: var(--verdigris); }
.eyebrow.centered { justify-content: center; }
.eyebrow.centered::after { content: ''; width: 24px; height: 1px; background: var(--verdigris); }

.h-display {
  font-family: var(--serif);
  font-size: clamp(42px, 7vw, 84px);
  font-weight: 400; line-height: 1.02;
  letter-spacing: -0.015em;
}
.h-section {
  font-family: var(--serif);
  font-size: clamp(32px, 4.5vw, 54px);
  font-weight: 400; line-height: 1.06;
  letter-spacing: -0.01em;
}
.h-display em, .h-section em { font-style: italic; color: var(--verdigris); }

.lead {
  font-size: clamp(17px, 2vw, 19px);
  color: var(--ink-soft); line-height: 1.7;
  max-width: 560px;
}
.body-copy { color: var(--ink-soft); max-width: 640px; }
.body-copy p + p { margin-top: 20px; }
.body-copy strong { color: var(--ink); font-weight: 500; }

.text-link {
  font-family: var(--grotesk);
  font-size: 11px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
  border-bottom: 1px solid var(--verdigris);
  padding-bottom: 4px;
  transition: color .2s;
}
.text-link:hover { color: var(--verdigris); }

/* ── Buttons — squares, green or ink, never filled dark ────── */
.btn {
  display: inline-block;
  font-family: var(--grotesk);
  font-size: 11px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  text-decoration: none; text-align: center;
  padding: 18px 40px;
  background: var(--ink); color: var(--cream);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}
.btn:hover { background: var(--verdigris); border-color: var(--verdigris); color: #fff; }

.btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--stone); }
.btn-ghost:hover { background: transparent; color: var(--verdigris); border-color: var(--verdigris); }

.btn-light { background: var(--verdigris); color: #fff; border-color: var(--verdigris); }
.btn-light:hover { background: var(--verdigris-deep); border-color: var(--verdigris-deep); color: #fff; }

.btn-sm { padding: 12px 24px; font-size: 10px; }

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* ── Header ─────────────────────────────────────────────── */
.site-head {
  position: fixed; top: 0; left: 0; right: 0; z-index: 300;
  background: rgba(252,252,249,0.92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.site-head.scrolled { border-bottom-color: var(--line); }
.head-in {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.logo {
  font-family: var(--grotesk);
  font-size: 12px; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
}
.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-family: var(--grotesk);
  font-size: 10px; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink-soft); text-decoration: none;
  transition: color .2s;
}
.nav-links a:hover { color: var(--verdigris); }
.nav-links a[aria-current="page"] { color: var(--ink); }
.nav-links .nav-signin { color: var(--ink-faint); }
.nav-links .btn { color: var(--cream); padding: 12px 24px; font-size: 10px; letter-spacing: .16em; }
.nav-links .btn:hover { color: #fff; }

.menu-btn {
  display: none; background: none; border: none; cursor: pointer;
  width: 32px; height: 32px; position: relative;
}
.menu-btn span {
  position: absolute; left: 4px; right: 4px; height: 1.5px;
  background: var(--ink); transition: transform .25s, top .25s;
}
.menu-btn span:nth-child(1) { top: 12px; }
.menu-btn span:nth-child(2) { top: 19px; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { top: 15px; transform: rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { top: 15px; transform: rotate(-45deg); }

/* ── Sections ───────────────────────────────────────────── */
main { padding-top: 72px; }
.sec { padding: clamp(80px, 12vw, 140px) 0; }
.sec-tight { padding: clamp(56px, 8vw, 90px) 0; }
.sec-alt { background: var(--cream-2); }
/* sec-dark now means "emphasis" — bordered light section, never a dark fill */
.sec-dark { background: var(--cream-2); color: var(--ink); border-top: 1px solid var(--verdigris); border-bottom: 1px solid var(--verdigris); }
.sec-dark .h-section { color: var(--ink); }
.sec-dark .lead, .sec-dark .body-copy { color: var(--ink-soft); }
.sec-dark .body-copy strong { color: var(--ink); }
.sec-dark .text-link { color: var(--ink); }
.sec-dark .text-link:hover { color: var(--verdigris); }

.sec-head { margin-bottom: clamp(48px, 6vw, 72px); }
.sec-head.centered { text-align: center; }
.sec-head.centered .lead { margin: 20px auto 0; }
.sec-head .lead { margin-top: 20px; }

/* ── Hero ───────────────────────────────────────────────── */
.hero { padding: clamp(90px, 14vw, 170px) 0 clamp(70px, 10vw, 120px); }
.hero .h-display { max-width: 820px; }
.hero .lead { margin: 28px 0 40px; }
.trust-row {
  display: flex; gap: 28px; flex-wrap: wrap;
  margin-top: 44px; padding-top: 28px;
  border-top: 1px solid var(--line);
}
.trust-item {
  font-family: var(--grotesk);
  font-size: 10px; font-weight: 500;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--ink-faint);
}

/* ── Grids & Cards ──────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.card {
  border: 1px solid var(--line);
  padding: 36px 30px;
  background: var(--cream);
}
.sec-dark .card { border-color: var(--line); background: var(--cream); }
.card-num {
  font-family: var(--serif); font-style: italic;
  font-size: 15px; color: var(--verdigris);
  margin-bottom: 20px; display: block;
}
.card-title {
  font-family: var(--grotesk);
  font-size: 13px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
  margin-bottom: 12px;
}
.card-text { font-size: 14.5px; color: var(--ink-soft); line-height: 1.6; }
.sec-dark .card-text { color: var(--ink-soft); }

/* ── Steps ──────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.step { border-top: 1px solid var(--stone); padding-top: 24px; }
.sec-dark .step { border-top-color: var(--line); }
.step-num {
  font-family: var(--serif); font-style: italic;
  font-size: 20px; color: var(--verdigris); display: block; margin-bottom: 14px;
}
.step-title {
  font-family: var(--grotesk);
  font-size: 13px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  margin-bottom: 10px;
}
.step-text { font-size: 14.5px; color: var(--ink-soft); line-height: 1.6; }
.sec-dark .step-text { color: var(--ink-soft); }

/* ── Meta strip (diagnostic stats) ──────────────────────── */
.meta-strip { display: flex; border: 1px solid var(--line); margin: 40px 0; }
.meta-cell { flex: 1; padding: 20px 24px; border-right: 1px solid var(--line); }
.meta-cell:last-child { border-right: none; }
.meta-k {
  font-family: var(--grotesk); font-size: 9px; font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 6px;
}
.meta-v { font-family: var(--grotesk); font-size: 16px; font-weight: 500; color: var(--ink); }
.meta-strip.on-light { border-color: var(--line); }
.meta-strip.on-light .meta-cell { border-right-color: var(--line); }
.meta-strip.on-light .meta-k { color: var(--ink-faint); }
.meta-strip.on-light .meta-v { color: var(--ink); }

/* ── Contrast lists (reactive vs architect) ─────────────── */
.contrast-col h3 {
  font-family: var(--grotesk); font-size: 12px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  margin-bottom: 24px;
}
.contrast-col ul { list-style: none; }
.contrast-col li {
  padding: 16px 0; border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.contrast-col.dim h3 { color: var(--ink-faint); }
.contrast-col.dim li { color: var(--ink-faint); }
.contrast-col.lit h3 { color: var(--verdigris); }
.contrast-col.lit li { color: var(--ink); }

/* ── Statement band ─────────────────────────────────────── */
.statement {
  font-family: var(--serif);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.28; letter-spacing: -0.01em;
  max-width: 880px; margin: 0 auto; text-align: center;
}
.statement em { font-style: italic; color: var(--verdigris); }

/* ── Principles grid ────────────────────────────────────── */
.principles { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); }
.principle {
  display: flex; gap: 20px; align-items: baseline;
  padding: 22px 8px; border-bottom: 1px solid var(--line);
}
.principle .rn {
  font-family: var(--serif); font-style: italic;
  font-size: 14px; color: var(--verdigris); min-width: 34px;
}
.principle .pt {
  font-family: var(--grotesk); font-size: 13px; font-weight: 500;
  letter-spacing: .1em; text-transform: uppercase; color: var(--ink);
}

/* ── FAQ ────────────────────────────────────────────────── */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  font-family: var(--grotesk); font-size: 14px; font-weight: 500;
  letter-spacing: .04em; color: var(--ink);
  padding: 24px 8px; cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-family: var(--serif); font-size: 20px; color: var(--verdigris); }
.faq details[open] summary::after { content: '\2212'; }
.faq .faq-a { padding: 0 8px 26px; color: var(--ink-soft); font-size: 15px; max-width: 620px; }

/* ── Photo slot ─────────────────────────────────────────── */
.photo-slot {
  border: 1px solid var(--line);
  background: var(--cream-2);
  aspect-ratio: 4 / 5;
  display: flex; align-items: center; justify-content: center;
}
.photo-slot span {
  font-family: var(--grotesk); font-size: 9px; font-weight: 500;
  letter-spacing: .24em; text-transform: uppercase; color: var(--ink-faint);
}

/* ── Program rows ───────────────────────────────────────── */
.program-row {
  display: grid; grid-template-columns: 90px 1fr auto;
  gap: 32px; align-items: start;
  padding: 40px 0; border-bottom: 1px solid var(--line);
}
.program-row:first-of-type { border-top: 1px solid var(--line); }
.program-pillar {
  font-family: var(--grotesk); font-size: 11px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase; color: var(--verdigris);
  padding-top: 6px;
}
.program-name {
  font-family: var(--serif); font-size: 26px; line-height: 1.15; margin-bottom: 10px;
}
.program-desc { font-size: 14.5px; color: var(--ink-soft); max-width: 520px; }
.program-status {
  font-family: var(--grotesk); font-size: 9px; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
  padding: 8px 14px; border: 1px solid var(--stone); color: var(--ink-faint);
  white-space: nowrap; margin-top: 4px;
}
.program-status.live { border-color: var(--verdigris); color: var(--verdigris); }

/* ── CTA band ───────────────────────────────────────────── */
.cta-band { text-align: center; }
.cta-band .h-section { margin-bottom: 16px; }
.cta-band .lead { margin: 0 auto 40px; }

/* ── Footer — light, bordered, never a dark fill ───────────── */
.site-foot {
  background: var(--cream); color: var(--ink-soft);
  border-top: 1.5px solid var(--verdigris);
  padding: 72px 0 40px;
}
.foot-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; margin-bottom: 64px;
}
.foot-brand .logo { color: var(--ink); }
.foot-tag { font-family: var(--serif); font-style: italic; font-size: 17px; color: var(--ink-soft); margin-top: 16px; }
.foot-col h4 {
  font-family: var(--grotesk); font-size: 9px; font-weight: 700;
  letter-spacing: .24em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 18px;
}
.foot-col a {
  display: block; font-size: 13.5px; color: var(--ink);
  text-decoration: none; padding: 5px 0; opacity: .8;
  transition: opacity .2s, color .2s;
}
.foot-col a:hover { opacity: 1; color: var(--verdigris); }
.foot-base {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  padding-top: 28px; border-top: 1px solid var(--line);
}
.foot-base p { font-size: 12px; color: var(--ink-faint); }
.foot-verse { font-family: var(--serif); font-style: italic; font-size: 13px; color: var(--verdigris); }

/* ── Reveal ─────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ── Mobile ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 1020px) {
  .menu-btn { display: block; }
  .nav-links {
    position: fixed; inset: 72px 0 auto 0;
    background: var(--cream); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start;
    gap: 0; padding: 12px 24px 28px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; font-size: 12px; }
  .nav-links .btn { margin-top: 12px; width: 100%; padding: 16px; }
}

@media (max-width: 720px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { gap: 40px; }
  .meta-strip { flex-direction: column; }
  .meta-cell { border-right: none; border-bottom: 1px solid var(--line); }
  .meta-cell:last-child { border-bottom: none; }
  .meta-strip.on-light .meta-cell { border-bottom-color: var(--line); }
  .principles { grid-template-columns: 1fr; }
  .program-row { grid-template-columns: 1fr; gap: 14px; }
  .program-status { justify-self: start; }
  .btn-row .btn { width: 100%; }
  .trust-row { gap: 16px; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 32px; }
}
