/* ============================================================
   THE EXPOSURE ATLAS — Human Exposure to the Polycrisis
   H Heuristics Research · digital report · 2000–2100+
   Design DNA: warm paper editorial atlas, ink navy text,
   hairline rules, four data accents (ember, water, ochre, moss)
   ============================================================ */

:root {
  --paper: #f7f4ee;
  --paper-2: #efe9de;
  --paper-3: #e6ded0;
  --ink: #14202e;
  --ink-soft: #3d4c5c;
  --ink-faint: #6b7683;
  --hairline: #d6cdbb;
  --hairline-dark: #b9ae97;

  --ember: #c4452c;
  --ember-deep: #96301d;
  --water: #1f6f8b;
  --water-deep: #155066;
  --ochre: #a97a22;
  --ochre-deep: #7d5a17;
  --moss: #3f6d53;
  --moss-deep: #2c4f3b;
  --plum: #5d4770;

  --sans: "Inter", "Helvetica Neue", Arial, sans-serif;
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --mono: "SFMono-Regular", "Menlo", Consolas, monospace;

  --maxw: 1180px;
  --gutter: clamp(1.15rem, 3.5vw, 2.6rem);
  --shadow-card: 0 1px 2px rgba(20, 32, 46, .05), 0 12px 32px -18px rgba(20, 32, 46, .28);
  --shadow-chart: inset 0 0 0 1px rgba(20, 32, 46, .06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.02rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 560;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-wrap: balance;
}

h1 { font-size: clamp(2.2rem, 4.6vw, 3.9rem); }
h2 { font-size: clamp(1.55rem, 2.6vw, 2.15rem); margin-bottom: .9rem; }
h3 { font-size: 1.22rem; margin-bottom: .55rem; }
h4 { font-size: 1.02rem; margin-bottom: .4rem; }

p { margin-bottom: 1rem; }
a { color: var(--water-deep); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--ember); }

.kicker {
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: .8rem;
}
.kicker .rule { color: var(--ember); }

.dek {
  font-family: var(--serif);
  font-size: clamp(1.08rem, 1.8vw, 1.35rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 46rem;
}

.dateline {
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--ink-faint);
  letter-spacing: .08em;
  margin-top: 1.1rem;
}

/* ---------- layout shells ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

.section { padding: clamp(3rem, 7vw, 5.4rem) 0; border-top: 1px solid var(--hairline); }
.section--tight { padding: clamp(2.2rem, 5vw, 3.6rem) 0; }
.section--alt { background: var(--paper-2); }

.hairline { border: 0; border-top: 1px solid var(--hairline); margin: 2.4rem 0; }

/* ---------- masthead & nav ---------- */
.masthead {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 244, 238, .94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.masthead__top {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem; padding: .85rem 0 .6rem;
  border-bottom: 1px solid var(--hairline);
}
.brand { display: flex; flex-direction: column; line-height: 1.15; }
.brand__mark {
  font-family: var(--serif); font-weight: 640; font-size: 1.28rem;
  letter-spacing: -.01em; color: var(--ink);
}
.brand__mark em { font-style: normal; color: var(--ember); }
.brand__sub {
  font-family: var(--mono); font-size: .62rem; letter-spacing: .24em;
  text-transform: uppercase; color: var(--ink-faint);
}
.brand__right {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--ink-faint); text-align: right;
}

.nav { display: flex; flex-wrap: wrap; gap: .1rem; }
.nav a {
  display: inline-block; padding: .72rem .95rem;
  font-size: .86rem; font-weight: 560; letter-spacing: .02em;
  color: var(--ink-soft); text-decoration: none;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--hairline-dark); }
.nav a.is-active { color: var(--ink); border-bottom-color: var(--ember); }
.nav__hint { margin-left: auto; align-self: center; font-family: var(--mono); font-size: .62rem; letter-spacing: .14em; color: var(--ink-faint); text-transform: uppercase; padding-right: .3rem; }
.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero { padding: clamp(3.2rem, 8vw, 6.2rem) 0 clamp(2.4rem, 5vw, 4rem); position: relative; }
.hero__grid {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 34rem);
  gap: clamp(2rem, 5vw, 4.5rem); align-items: end;
}
.hero__aside { border-left: 1px solid var(--hairline-dark); padding-left: 1.4rem; }
.hero__aside .num {
  font-family: var(--serif); font-size: 2.4rem; font-weight: 560; color: var(--ember); line-height: 1;
}
.hero__aside p { font-size: .88rem; color: var(--ink-soft); margin: .4rem 0 0; }
.hero__tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.6rem; }
.tag {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
  padding: .34rem .62rem; border: 1px solid var(--hairline-dark); border-radius: 999px;
  color: var(--ink-soft); background: var(--paper);
}

/* ---------- stat block ---------- */
.statblock {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 3px double var(--hairline-dark);
  border-bottom: 3px double var(--hairline-dark);
  margin: 2.6rem 0 0;
}
.stat {
  padding: 1.5rem 1.4rem 1.4rem; border-left: 1px solid var(--hairline);
}
.stat:first-child { border-left: 0; }
.stat__value {
  font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.5rem); font-weight: 580;
  line-height: 1; letter-spacing: -.02em;
}
.stat__label { font-size: .8rem; color: var(--ink-soft); margin-top: .45rem; line-height: 1.45; }
.stat__src { font-family: var(--mono); font-size: .62rem; color: var(--ink-faint); margin-top: .35rem; letter-spacing: .05em; }
.stat--ember .stat__value { color: var(--ember); }
.stat--water .stat__value { color: var(--water); }
.stat--ochre .stat__value { color: var(--ochre); }
.stat--moss .stat__value { color: var(--moss); }

/* ---------- prose ---------- */
.prose-grid {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, 4.2rem); align-items: start;
}
.prose-grid--swap .prose-grid__aside { order: -1; }

.prose { font-size: 1.03rem; }
.prose > p:first-of-type::first-letter,
.dropcap::first-letter {
  font-family: var(--serif); font-size: 3.35em; font-weight: 560; line-height: .82;
  float: left; padding: .06em .12em 0 0; color: var(--ember);
}
.lead { font-family: var(--serif); font-size: 1.22rem; line-height: 1.5; color: var(--ink); }

.aside-note {
  border-left: 3px solid var(--ochre); background: var(--paper-2);
  padding: 1.1rem 1.25rem; font-size: .9rem; color: var(--ink-soft);
  margin: .2rem 0 1.4rem;
}
.aside-note strong { color: var(--ink); font-family: var(--serif); font-size: 1rem; display: block; margin-bottom: .3rem; }
.aside-note--ember { border-left-color: var(--ember); }
.aside-note--water { border-left-color: var(--water); }
.aside-note--moss { border-left-color: var(--moss); }

/* ---------- chart frames ---------- */
.figure {
  background: #fffdf9; border: 1px solid var(--hairline);
  box-shadow: var(--shadow-card), var(--shadow-chart);
  padding: 1.5rem 1.5rem 1.2rem; margin: 2.4rem 0;
  border-radius: 6px;
}
.figure__head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.figure__title { font-family: var(--serif); font-size: 1.18rem; font-weight: 580; }
.figure__no { font-family: var(--mono); font-size: .68rem; letter-spacing: .14em; color: var(--ink-faint); text-transform: uppercase; }
.figure__canvas { position: relative; height: clamp(300px, 38vw, 430px); }
.figure__caption { font-size: .8rem; color: var(--ink-faint); border-top: 1px solid var(--hairline); padding-top: .7rem; margin-top: .9rem; line-height: 1.55; }
.figure__caption b { color: var(--ink-soft); font-weight: 600; }
.figure__legend-note { font-family: var(--mono); font-size: .66rem; color: var(--ink-faint); letter-spacing: .06em; margin-left: auto; }

/* ---------- insight grid ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.insight {
  background: #fffdf9; border: 1px solid var(--hairline); border-top: 3px solid var(--ink);
  padding: 1.35rem 1.4rem; border-radius: 6px; box-shadow: var(--shadow-card);
}
.insight--ember { border-top-color: var(--ember); }
.insight--water { border-top-color: var(--water); }
.insight--ochre { border-top-color: var(--ochre); }
.insight--moss { border-top-color: var(--moss); }
.insight__k { font-family: var(--mono); font-size: .64rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: .55rem; }
.insight h3 { font-size: 1.12rem; }
.insight p { font-size: .9rem; color: var(--ink-soft); margin-bottom: 0; }
.insight .big {
  font-family: var(--serif); font-size: 1.9rem; font-weight: 580; display: block; margin-bottom: .3rem; line-height: 1.1;
}

/* ---------- takeaway ---------- */
.takeaway {
  border: 1px solid var(--hairline-dark); border-left: 6px solid var(--ember);
  background: var(--paper-2); padding: 1.5rem 1.7rem; border-radius: 6px;
  margin: 2.4rem 0;
}
.takeaway__k { font-family: var(--mono); font-size: .66rem; letter-spacing: .2em; text-transform: uppercase; color: var(--ember-deep); margin-bottom: .4rem; }
.takeaway p { margin: 0; font-size: 1.02rem; }
.takeaway--moss { border-left-color: var(--moss); }
.takeaway--moss .takeaway__k { color: var(--moss-deep); }
.takeaway--water { border-left-color: var(--water); }
.takeaway--water .takeaway__k { color: var(--water-deep); }

/* ---------- tables ---------- */
.table-scroll { overflow-x: auto; margin: 1.8rem 0; border: 1px solid var(--hairline); border-radius: 6px; background: #fffdf9; box-shadow: var(--shadow-card); }
table.data { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 640px; }
table.data th, table.data td { padding: .72rem .95rem; text-align: left; border-bottom: 1px solid var(--hairline); vertical-align: top; }
table.data thead th {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-faint); background: var(--paper-2); border-bottom: 2px solid var(--hairline-dark);
}
table.data tbody tr:last-child td { border-bottom: 0; }
table.data tbody tr:hover { background: #fbf8f1; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
.badge { font-family: var(--mono); font-size: .66rem; letter-spacing: .08em; padding: .14rem .5rem; border-radius: 999px; white-space: nowrap; }
.badge--ember { background: #f7e3dc; color: var(--ember-deep); }
.badge--water { background: #ddebf0; color: var(--water-deep); }
.badge--ochre { background: #f0e5cd; color: var(--ochre-deep); }
.badge--moss { background: #dfe9e0; color: var(--moss-deep); }

/* ---------- timeline (century page) ---------- */
.timeline { display: grid; grid-template-columns: repeat(5, 1fr); gap: .8rem; margin: 2rem 0; }
.tl-era { background: #fffdf9; border: 1px solid var(--hairline); border-top: 3px solid var(--ink); padding: 1.1rem 1.1rem 1rem; border-radius: 6px; }
.tl-era__year { font-family: var(--serif); font-size: 1.45rem; font-weight: 580; }
.tl-era__k { font-family: var(--mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-faint); margin: .25rem 0 .55rem; }
.tl-era p { font-size: .82rem; color: var(--ink-soft); margin: 0; line-height: 1.5; }
.tl-era--ember { border-top-color: var(--ember); }
.tl-era--water { border-top-color: var(--water); }
.tl-era--ochre { border-top-color: var(--ochre); }
.tl-era--moss { border-top-color: var(--moss); }
.tl-era--plum { border-top-color: var(--plum); }

/* ---------- CTA ---------- */
.cta {
  background: var(--ink); color: var(--paper); border-radius: 10px;
  padding: clamp(2.2rem, 5vw, 3.4rem); margin: 3rem 0 1rem;
  display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2rem; align-items: center;
}
.cta h2 { color: var(--paper); margin-bottom: .5rem; }
.cta p { color: #cfd6dd; max-width: 46rem; margin: 0; font-size: .98rem; }
.cta__actions { display: flex; gap: .8rem; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: .7rem 1.25rem; border-radius: 6px;
  font-size: .86rem; font-weight: 600; text-decoration: none; letter-spacing: .02em;
  border: 1px solid transparent;
}
.btn--paper { background: var(--paper); color: var(--ink); }
.btn--paper:hover { background: #fff; color: var(--ink); }
.btn--ghost { border-color: rgba(247, 244, 238, .45); color: var(--paper); }
.btn--ghost:hover { border-color: var(--paper); color: var(--paper); }

/* ---------- footer ---------- */
.footer { border-top: 3px double var(--hairline-dark); padding: 2.6rem 0 2rem; margin-top: 2rem; }
.footer__grid { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(0, 1fr)); gap: 2rem; }
.footer h4 { font-family: var(--mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: .8rem; }
.footer p, .footer li { font-size: .82rem; color: var(--ink-soft); }
.footer ul { list-style: none; }
.footer li { margin-bottom: .35rem; }
.footer a { color: var(--ink-soft); text-decoration: none; }
.footer a:hover { color: var(--ember); }
.footer__bottom { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--hairline); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font-family: var(--mono); font-size: .66rem; letter-spacing: .1em; color: var(--ink-faint); text-transform: uppercase; }

/* ---------- methodology / sources ---------- */
.src-list { columns: 2; column-gap: 2.5rem; font-size: .82rem; color: var(--ink-soft); margin-top: 1.2rem; }
.src-list li { break-inside: avoid; margin-bottom: .55rem; list-style: none; padding-left: 1.1em; text-indent: -1.1em; }
.src-list li::before { content: "— "; color: var(--ember); }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__aside { border-left: 0; border-top: 1px solid var(--hairline-dark); padding: 1rem 0 0; }
  .statblock { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--hairline); }
  .prose-grid { grid-template-columns: 1fr; }
  .prose-grid--swap .prose-grid__aside { order: 0; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .cta { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .grid-3, .grid-2, .statblock, .timeline { grid-template-columns: 1fr; }
  .stat { border-left: 0; border-top: 1px solid var(--hairline); }
  .stat:first-child { border-top: 0; }
  .footer__grid { grid-template-columns: 1fr; }
  .src-list { columns: 1; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper); border-bottom: 1px solid var(--hairline); flex-direction: column; padding: .5rem 0; }
  .nav.open { display: flex; }
  .nav a { border-bottom: 0; padding: .7rem 1.2rem; }
  .nav a.is-active { border-left: 3px solid var(--ember); border-bottom: 0; }
  .nav__hint { display: none; }
  .nav-toggle {
    display: block; background: none; border: 1px solid var(--hairline-dark); border-radius: 6px;
    padding: .45rem .7rem; font-family: var(--mono); font-size: .72rem; letter-spacing: .1em;
    color: var(--ink); cursor: pointer; align-self: center;
  }
  .masthead__top { flex-wrap: wrap; }
  .brand__right { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}