/* =========================================================
   Mesa Group — site.css
   Elevation build. Depends on colors_and_type.css (tokens + type).
   Register: institutional parent. Survey-instrument restraint.
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--fg-primary);
  background: var(--bg-page);
  font-size: var(--t-body-lg);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.wrap { max-width: var(--max-content); margin-inline: auto; padding-inline: var(--gutter); }
.prose { max-width: var(--max-prose); }
.eyebrow { /* extends .mg-eyebrow */
  font-family: var(--font-sans); font-weight: 500; font-size: var(--t-eyebrow);
  text-transform: uppercase; letter-spacing: var(--tracking-wider); color: var(--fg-secondary);
  display: inline-flex; align-items: center; gap: var(--space-2);
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent); display: inline-block; }
.lede { font-family: var(--font-serif); font-style: italic; font-size: 21px; line-height: var(--lh-snug); color: var(--fg-primary); }
.muted { color: var(--fg-secondary); }
.measure { max-width: 62ch; }

/* skip link */
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--mg-navy); color: #fff; padding: var(--space-3) var(--space-5); z-index: 200; }
.skip-link:focus { left: var(--space-4); top: var(--space-4); }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--border-hairline);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); height: 64px; }
.brand { display: inline-flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--fg-primary); }
.brand__cap { width: 26px; height: 26px; flex: none; }
.brand__word { font-family: var(--font-serif); font-weight: 700; font-size: 16px; letter-spacing: var(--tracking-wide); text-transform: uppercase; }
.util-nav { display: flex; align-items: center; gap: var(--space-7); }
.util-nav a { font-family: var(--font-sans); font-weight: 500; font-size: 13px; letter-spacing: 0.04em; text-decoration: none; color: var(--fg-secondary); transition: color var(--dur-fast) var(--ease-standard); }
.util-nav a:hover { color: var(--fg-primary); }
.cta-button {
  font-family: var(--font-sans); font-weight: 600; font-size: 13px; letter-spacing: 0.04em;
  background: var(--accent); color: var(--accent-contrast) !important;
  padding: 10px 18px; border-radius: var(--radius-md); text-decoration: none !important;
  border: 1px solid transparent; transition: filter var(--dur-fast) var(--ease-standard);
  display: inline-block; white-space: nowrap;
}
.cta-button:hover { filter: brightness(0.92); }
.cta-button--ghost { background: transparent; color: var(--accent) !important; border-color: var(--accent); }
.cta-button--lg { font-size: 15px; padding: 14px 26px; }
.nav-toggle { display: none; }

/* ---------------- Hero ---------------- */
.hero { padding: var(--space-13) 0 var(--space-11); position: relative; overflow: hidden; }
/* topo variant: terrain panel anchored to the right edge of the hero */
.hero--topo .wrap { position: relative; z-index: 1; }
.hero__topo {
  position: absolute; right: 0; top: -8%; width: 44%; height: 120%;
  pointer-events: none; user-select: none;
}
.hero__topo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 8%; opacity: 0.20; }
.hero__eyebrow { margin-bottom: var(--space-6); }
.hero h1 {
  font-family: var(--font-serif); font-weight: 700; font-size: clamp(34px, 5.2vw, 58px);
  line-height: 1.05; letter-spacing: var(--tracking-tight); margin: 0 0 var(--space-6); max-width: 18ch;
}
.hero__sub { font-size: 19px; line-height: var(--lh-normal); color: var(--fg-secondary); max-width: 56ch; margin: 0 0 var(--space-8); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; }
.hero__tagline { font-family: var(--font-sans); text-transform: uppercase; letter-spacing: var(--tracking-wider); font-size: 12px; color: var(--accent); margin-bottom: var(--space-5); }

/* ---------------- The route spine (sticky figure + rail + scrolling waypoints) ---------------- */
.spine { position: relative; }
/* 3-col: terrain | rail | waypoints — each in its own column so rail never overlaps content */
.spine__layout { display: grid; grid-template-columns: minmax(0, 1.1fr) 160px minmax(0, 0.85fr); gap: 0 var(--space-8); align-items: start; }
.spine__figure {
  position: sticky; top: 64px; height: calc(100vh - 64px);
  display: flex; align-items: stretch; justify-content: center;
  padding: var(--space-7) 0;
}
.spine__terrain-wrap { position: relative; aspect-ratio: 945 / 1680; height: 100%; width: auto; max-width: 100%; margin-inline: auto; }
.spine__terrain { width: 100%; height: 100%; object-fit: contain; opacity: 0.96; }
.spine__route { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.spine__route-line { fill: none; stroke: var(--accent); stroke-width: 6; stroke-linecap: round; stroke-linejoin: round; }
.spine__route-base { fill: none; stroke: var(--mg-navy-tint-24); stroke-width: 6; stroke-linecap: round; stroke-linejoin: round; }
.spine__here { fill: var(--accent); stroke: #fff; stroke-width: 3; }
.spine__wp-dot { fill: #fff; stroke: var(--accent); stroke-width: 3; }
.spine__wp-dot.is-reached { fill: var(--accent); }

/* the persistent route rail (on-page nav + you-are-here) — own grid column, no background needed */
.route-rail { position: sticky; top: 80px; padding-top: var(--space-4); }
.rail { list-style: none; margin: 0; padding: 0; }
.rail__item { position: relative; }
.rail__link {
  display: grid; grid-template-columns: 34px 1fr; align-items: baseline; gap: var(--space-3);
  padding: var(--space-3) 0; text-decoration: none; color: var(--fg-muted);
  border-left: 2px solid var(--border-hairline); padding-left: var(--space-5); margin-left: 8px;
  transition: color var(--dur-fast) var(--ease-standard), border-color var(--dur-fast) var(--ease-standard);
}
.rail__num { font-family: var(--font-serif); font-weight: 700; font-size: 14px; color: var(--fg-muted); }
.rail__name { font-family: var(--font-sans); font-size: 13px; letter-spacing: 0.03em; }
.rail__link:hover { color: var(--fg-secondary); }
.rail__item.is-active .rail__link { color: var(--fg-primary); border-color: var(--accent); }
.rail__item.is-active .rail__num { color: var(--accent); }

/* waypoint content sections */
.waypoint {
  min-height: 78vh; padding: var(--space-12) 0; display: flex; flex-direction: column; justify-content: center;
  border-top: 1px solid var(--border-hairline);
}
.waypoint:first-child { border-top: 0; }
.waypoint__num { font-family: var(--font-serif); font-weight: 700; font-size: 15px; color: var(--accent); letter-spacing: 0.1em; }
.waypoint__title { font-family: var(--font-serif); font-weight: 700; font-size: clamp(26px, 3.4vw, 38px); line-height: 1.1; margin: var(--space-3) 0 var(--space-5); }
.waypoint__body { font-size: 17px; line-height: var(--lh-loose); color: var(--fg-secondary); max-width: 54ch; }
.waypoint__body strong { color: var(--fg-primary); font-weight: 600; }
.waypoint__meta { margin-top: var(--space-6); display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6); }
.waypoint__meta dt { font-family: var(--font-sans); font-size: 11px; text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--fg-muted); }
.waypoint__meta dd { margin: 2px 0 0; font-size: 15px; }
.territory-point { --accent: var(--mg-terracotta); }
.territory-built { --accent: var(--mg-olive); }
.territory-tag { font-family: var(--font-sans); font-size: 11px; text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--accent); }

/* ---------------- Generic sections ---------------- */
.section { padding: var(--space-12) 0; }
/* elevation-line texture threads the cartographic motif through the page */
.section--subtle {
  background-color: var(--bg-subtle);
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 39px,
    rgba(15,34,56,0.028) 39px,
    rgba(15,34,56,0.028) 40px
  );
}
.section--dark { background: var(--bg-inverse); }
.section__head { max-width: 64ch; margin-bottom: var(--space-9); }
.section__num { font-family: var(--font-serif); font-weight: 700; color: var(--accent); font-size: 15px; }
.section h2 { font-size: clamp(24px, 3vw, 34px); line-height: 1.12; margin: var(--space-3) 0 var(--space-4); }
.section__intro { font-size: 18px; color: var(--fg-secondary); line-height: var(--lh-normal); }
.cap-rule { width: 30px; height: 30px; position: relative; background: var(--accent); margin-bottom: var(--space-6); }
.cap-rule::before { content:""; position:absolute; top:0; left:0; right:0; height:8.3%; background: var(--mg-navy); }
.cap-rule::after { content:""; position:absolute; top:8.3%; left:0; right:0; height:10.4%; background: var(--bg-page); }
.section--subtle .cap-rule::after { background: var(--bg-subtle); }

/* four-category map */
.fourmap { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
.cat {
  border: 1px solid var(--border-hairline); border-top: 3px solid var(--accent);
  padding: var(--space-6); background: var(--bg-panel); border-radius: var(--radius-sm);
}
.cat__name { font-family: var(--font-serif); font-weight: 700; font-size: 19px; margin-bottom: var(--space-3); }
.cat__desc { font-size: 14px; color: var(--fg-secondary); line-height: var(--lh-normal); }

/* two doors */
.doors { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }
.door { border: 1px solid var(--border-hairline); border-radius: var(--radius-sm); padding: var(--space-8); background: var(--bg-panel); display: flex; flex-direction: column; }
.door--point { --accent: var(--mg-terracotta); }
.door--built { --accent: var(--mg-olive); }
.door__cap { width: 40px; height: 40px; flex: none; margin-bottom: var(--space-5); }
.door h3 { font-size: 24px; margin-bottom: var(--space-3); }
.door p { color: var(--fg-secondary); margin-bottom: var(--space-5); }
.door__list { list-style: none; padding: 0; margin: 0 0 var(--space-6); }
.door__list li { padding: var(--space-2) 0; border-top: 1px solid var(--border-hairline); font-size: 15px; }
.door__foot { margin-top: auto; }

/* engagement shapes */
.shapes { display: grid; gap: var(--space-5); }
.shape { display: grid; grid-template-columns: 56px 1fr auto; gap: var(--space-5); align-items: start; padding: var(--space-6) 0; border-top: 1px solid var(--border-hairline); }
.shape__num { font-family: var(--font-serif); font-weight: 700; font-size: 22px; color: var(--accent); }
.shape__name { font-family: var(--font-serif); font-weight: 700; font-size: 19px; }
.shape__what { color: var(--fg-secondary); font-size: 15px; margin-top: var(--space-2); max-width: 60ch; }
.shape__own { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0.03em; color: var(--fg-muted); margin-top: var(--space-3); }
.shape__own b { color: var(--accent); font-weight: 600; }

/* proof / case */
.proof { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-10); align-items: start; }
.proof__figs { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.fig { border: 1px solid var(--border-hairline); border-radius: var(--radius-sm); padding: var(--space-6); background: var(--bg-panel); }
.fig__num { font-family: var(--font-serif); font-weight: 700; font-size: 30px; line-height: 1; }
.fig__label { font-family: var(--font-sans); font-size: 12px; color: var(--fg-secondary); margin-top: var(--space-3); line-height: 1.4; }
.pending-cert { display: inline-block; font-family: var(--font-sans); font-size: 10px; font-weight: 600; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--mg-terracotta); background: rgba(218,94,0,0.08); border: 1px dashed rgba(218,94,0,0.5); border-radius: var(--radius-xs); padding: 3px 7px; }
.fig__num.pending-cert { font-size: 12px; padding: 6px 9px; }

/* visible placeholders (SRC-BIOS / HEADSHOTS / SAIDNO) — never fake content */
.placeholder { border: 1px dashed var(--mg-gray-400); border-radius: var(--radius-sm); padding: var(--space-6); background: repeating-linear-gradient(135deg, var(--mg-gray-50), var(--mg-gray-50) 10px, #fff 10px, #fff 20px); color: var(--fg-secondary); }
.placeholder__tag { font-family: var(--font-sans); font-size: 11px; font-weight: 700; letter-spacing: var(--tracking-wide); text-transform: uppercase; color: var(--mg-gray-500); display: block; margin-bottom: var(--space-2); }
.headshot-ph { width: 96px; height: 96px; border-radius: var(--radius-sm); display: grid; place-items: center; text-align: center; }

/* principals */
.principals { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); }
.principal { display: grid; grid-template-columns: 96px 1fr; gap: var(--space-5); align-items: start; }
.principal h3 { font-size: 20px; }
.principal .role { font-family: var(--font-sans); font-size: 12px; letter-spacing: 0.04em; color: var(--accent); text-transform: uppercase; margin: var(--space-1) 0 var(--space-3); }

/* writing / findings index */
.findings-list { list-style: none; padding: 0; margin: 0; }
.finding { display: grid; grid-template-columns: 1fr auto; gap: var(--space-4) var(--space-6); padding: var(--space-7) 0; border-top: 1px solid var(--border-hairline); align-items: baseline; }
.finding__cat { font-family: var(--font-sans); font-size: 11px; text-transform: uppercase; letter-spacing: var(--tracking-wide); color: var(--accent); }
.finding h3 { font-size: 22px; margin: var(--space-2) 0; }
.finding p { color: var(--fg-secondary); font-size: 15px; max-width: 64ch; }
.finding__date { font-family: var(--font-sans); font-size: 12px; color: var(--fg-muted); white-space: nowrap; }

/* ---------------- Forms (briefing intake) ---------------- */
.intake { display: grid; gap: var(--space-7); max-width: 640px; }
.field { display: grid; gap: var(--space-2); }
.field label { font-family: var(--font-sans); font-size: 13px; font-weight: 500; letter-spacing: 0.02em; }
.field .req { color: var(--mg-terracotta); }
.field input, .field select, .field textarea {
  font-family: var(--font-serif); font-size: 16px; color: var(--fg-primary);
  padding: 12px 14px; border: 1px solid var(--border-rule); border-radius: var(--radius-sm); background: #fff; width: 100%;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; box-shadow: var(--focus-ring); border-color: var(--accent); }
.field--row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.form-note { font-size: 13px; color: var(--fg-muted); }
.form-status { padding: var(--space-5); border-radius: var(--radius-sm); font-size: 15px; display: none; }
.form-status.is-ok { display: block; background: rgba(79,119,90,0.1); border: 1px solid rgba(79,119,90,0.4); }
.form-status.is-err { display: block; background: rgba(218,94,0,0.08); border: 1px solid rgba(218,94,0,0.4); }

/* ---------------- Footer ---------------- */
.site-footer { background: var(--mg-navy); color: rgba(255,255,255,0.8); padding: var(--space-12) 0 var(--space-9); margin-top: var(--space-13); }
.site-footer a { color: rgba(255,255,255,0.8); text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-9); }
.footer__brand { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-5); }
.footer__desc { max-width: 44ch; line-height: var(--lh-normal); font-size: 14px; color: rgba(255,255,255,0.66); }
.footer__col h4 { font-family: var(--font-sans); font-size: 11px; text-transform: uppercase; letter-spacing: var(--tracking-wide); color: rgba(255,255,255,0.5); margin-bottom: var(--space-4); }
.footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-3); font-size: 14px; }
.footer__legal { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid rgba(255,255,255,0.14); font-family: var(--font-sans); font-size: 12px; color: rgba(255,255,255,0.5); display: flex; justify-content: space-between; gap: var(--space-5); flex-wrap: wrap; }
.tagline-mark { font-family: var(--font-serif); font-style: italic; color: rgba(255,255,255,0.8); }

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .spine__layout { grid-template-columns: 1fr; }  /* 3 cols collapse to 1 on tablet */
  .spine__figure { display: none; }        /* desktop drama removed on mobile */
  .route-rail { display: none; }
  .fourmap { grid-template-columns: 1fr 1fr; }
  .doors, .proof, .principals { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-7); }
  .waypoint { min-height: 0; padding: var(--space-9) 0; }
  .shape { grid-template-columns: 40px 1fr; }
  .shape__foot { grid-column: 2; }
  /* mobile progress rail: compact horizontal dots */
  .mobile-progress { display: flex; }
}
@media (max-width: 620px) {
  .hero__topo { display: none; }  /* topo panel clips text on narrow screens */
  .util-nav { display: none; }
  .util-nav.is-open { display: flex; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: var(--space-4); background: #fff; border-bottom: 1px solid var(--border-hairline); padding: var(--space-6) var(--gutter); }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border: 1px solid var(--border-hairline); background: #fff; border-radius: var(--radius-sm); }
  .fourmap { grid-template-columns: 1fr; }
  .field--row { grid-template-columns: 1fr; }
  .hero { padding: var(--space-11) 0 var(--space-9); }
}

/* mobile compact progress (hidden on desktop) */
.mobile-progress { display: none; gap: 6px; align-items: center; padding: var(--space-3) 0; position: sticky; top: 64px; background: var(--bg-page); z-index: 50; border-bottom: 1px solid var(--border-hairline); }
.mobile-progress__dot { width: 10px; height: 10px; border-radius: 50%; border: 1.5px solid var(--mg-gray-400); }
.mobile-progress__dot.is-active { background: var(--accent); border-color: var(--accent); }

/* ---------------- Reduced motion ---------------- */
@media (prefers-reduced-motion: reduce) {
  .spine__route-line { stroke-dasharray: none !important; stroke-dashoffset: 0 !important; }
  .spine__here { display: none; }
  * { transition: none !important; animation: none !important; }
}