/* =====================================================================
   Ebola & the World — design system
   Editorial base + light-dashboard components. No build step.
   ===================================================================== */

:root {
  /* palette */
  --paper:      #f7f4ee;   /* warm off-white background */
  --paper-2:    #fffdf8;   /* card surface */
  --ink:        #16202c;   /* primary text */
  --ink-soft:   #44505e;   /* secondary text */
  --line:       #e2dccf;   /* hairlines / borders */
  --line-2:     #d2cab8;
  --teal:       #11776b;   /* primary accent (health) */
  --teal-dark:  #0b5048;
  --teal-tint:  #e3efed;
  --coral:      #c43d4b;   /* alert / outbreak accent */
  --coral-tint: #f7e4e6;
  --gold:       #c79023;   /* badges / progress */
  --gold-tint:  #f6ecd2;
  --navy:       #21476e;   /* "for" perspective */
  --navy-tint:  #e5edf5;
  --plum:       #7a3a6b;   /* "against" perspective */
  --plum-tint:  #f1e6ef;

  /* type */
  --serif: "Iowan Old Style", "Palatino Linotype", "Palatino", "Georgia", "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* layout */
  --measure: 46rem;        /* reading column */
  --wide:    72rem;        /* wide / dashboard column */
  --radius:  14px;
  --radius-sm: 9px;
  --shadow:  0 1px 2px rgba(22,32,44,.06), 0 8px 24px rgba(22,32,44,.07);
  --shadow-sm: 0 1px 2px rgba(22,32,44,.07), 0 3px 10px rgba(22,32,44,.06);
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.06rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-dark); text-underline-offset: 2px; }
a:hover { color: var(--teal); }

/* ---------- typography ---------- */
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.18; color: var(--ink); font-weight: 600; }
h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); letter-spacing: -.01em; margin: 0 0 .4em; }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.3vw, 2.05rem); margin: 2.2em 0 .5em; }
h3 { font-size: 1.28rem; margin: 1.8em 0 .4em; }
h4 { font-size: 1.06rem; margin: 1.4em 0 .3em; font-family: var(--sans); font-weight: 700; letter-spacing: .01em; }
p { margin: 0 0 1.05em; }
.lead { font-size: 1.22rem; line-height: 1.55; color: var(--ink-soft); }
.eyebrow {
  font-family: var(--sans); font-weight: 700; font-size: .76rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--teal);
  margin: 0 0 .6em;
}
strong { font-weight: 700; }
mark { background: var(--gold-tint); padding: 0 .15em; border-radius: 3px; }

/* ---------- layout ---------- */
main { display: block; }
.wrap   { width: 100%; max-width: var(--measure); margin: 0 auto; padding: 0 1.25rem; }
.wrap-wide { width: 100%; max-width: var(--wide); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 2.4rem 0; }
.divider { border: 0; border-top: 1px solid var(--line); margin: 2.6rem 0; }
.muted { color: var(--ink-soft); }
.center { text-align: center; }

/* =====================================================================
   Header / nav  (injected by main.js)
   ===================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247,244,238,.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: var(--wide); margin: 0 auto; padding: .6rem 1.25rem;
  display: flex; align-items: center; gap: 1rem;
}
.brand {
  display: flex; align-items: center; gap: .55rem;
  font-family: var(--serif); font-weight: 600; font-size: 1.16rem;
  color: var(--ink); text-decoration: none; white-space: nowrap;
}
.brand .dot { width: .7rem; height: .7rem; border-radius: 50%; background: var(--coral); box-shadow: 0 0 0 4px var(--coral-tint); }
.nav-links { display: flex; flex-wrap: wrap; gap: .15rem; margin-left: auto; align-items: center; }
.nav-links a {
  font-family: var(--sans); font-size: .9rem; text-decoration: none;
  color: var(--ink-soft); padding: .35rem .6rem; border-radius: 7px; white-space: nowrap;
}
.nav-links a:hover { background: var(--teal-tint); color: var(--teal-dark); }
.nav-links a.active { color: var(--teal-dark); background: var(--teal-tint); font-weight: 600; }
.nav-toggle {
  display: none; margin-left: auto; background: none; border: 1px solid var(--line-2);
  border-radius: 8px; padding: .35rem .6rem; font-size: 1.1rem; cursor: pointer; color: var(--ink);
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    flex-basis: 100%; flex-direction: column; align-items: stretch;
    gap: .1rem; margin: .4rem 0 .2rem; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .55rem .6rem; }
}

/* =====================================================================
   Hero
   ===================================================================== */
.hero { padding: 3rem 0 1.4rem; }
.hero .kicker {
  display: inline-block; font-family: var(--sans); font-weight: 700; font-size: .8rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--coral);
  background: var(--coral-tint); padding: .3rem .7rem; border-radius: 999px; margin-bottom: 1rem;
}
.hero h1 { max-width: 16ch; }
.hero .lead { max-width: 40ch; }

/* =====================================================================
   Section header band (top of each content page)
   ===================================================================== */
.section-head { padding: 2.6rem 0 1.2rem; border-bottom: 1px solid var(--line); margin-bottom: 1.6rem; }
.section-head .num {
  font-family: var(--serif); font-size: .95rem; color: var(--teal);
  letter-spacing: .04em;
}
.section-head h1 { margin-top: .2rem; }

/* =====================================================================
   Cards / section grid (home)
   ===================================================================== */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr)); gap: 1.1rem; }
.card {
  display: flex; flex-direction: column; gap: .5rem;
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.25rem 1.25rem 1.35rem;
  text-decoration: none; color: inherit; box-shadow: var(--shadow-sm);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  position: relative;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--line-2); }
.card .badge-n {
  width: 2.3rem; height: 2.3rem; flex: none; display: grid; place-items: center;
  border-radius: 50%; background: var(--teal-tint); color: var(--teal-dark);
  font-family: var(--serif); font-weight: 600; font-size: 1.05rem;
}
.card h3 { margin: .35rem 0 0; font-size: 1.18rem; }
.card .blurb { color: var(--ink-soft); font-size: .96rem; margin: 0; }
.card .card-foot { margin-top: auto; padding-top: .7rem; display: flex; align-items: center; gap: .5rem; font-size: .85rem; }
.card .go { color: var(--teal); font-weight: 600; }

/* "coming soon" guide cards on the splash — non-interactive, faded */
.card.soon { opacity: .55; cursor: default; }
.card.soon:hover { transform: none; box-shadow: var(--shadow-sm); border-color: var(--line); }

/* status pill on a card */
.pill {
  font-family: var(--sans); font-size: .72rem; font-weight: 700; letter-spacing: .03em;
  padding: .2rem .55rem; border-radius: 999px; text-transform: uppercase;
}
.pill.todo { background: var(--line); color: var(--ink-soft); }
.pill.done { background: var(--teal-tint); color: var(--teal-dark); }
.pill.score { background: var(--gold-tint); color: #8a6510; }

/* =====================================================================
   Stat strip (dashboard)
   ===================================================================== */
.stat-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr)); gap: .9rem; margin: 1.4rem 0; }
.stat {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 1rem 1.1rem; box-shadow: var(--shadow-sm);
}
.stat .num { font-family: var(--serif); font-size: 2rem; line-height: 1; font-weight: 600; }
.stat .num.alert { color: var(--coral); }
.stat .num.ok { color: var(--teal); }
.stat .label { font-size: .82rem; color: var(--ink-soft); margin-top: .35rem; }
.stat .sub { font-size: .74rem; color: var(--ink-soft); opacity: .8; }

/* =====================================================================
   Callout boxes
   ===================================================================== */
.callout {
  border: 1px solid var(--line); border-left-width: 4px; border-radius: var(--radius-sm);
  background: var(--paper-2); padding: 1.05rem 1.2rem; margin: 1.5rem 0;
}
.callout .c-tag {
  font-family: var(--sans); font-weight: 700; font-size: .73rem; letter-spacing: .1em;
  text-transform: uppercase; display: block; margin-bottom: .35rem;
}
.callout p:last-child { margin-bottom: 0; }
.callout.keyterm { border-left-color: var(--teal); background: var(--teal-tint); }
.callout.keyterm .c-tag { color: var(--teal-dark); }
.callout.why { border-left-color: var(--gold); background: var(--gold-tint); }
.callout.why .c-tag { color: #8a6510; }
.callout.alert { border-left-color: var(--coral); background: var(--coral-tint); }
.callout.alert .c-tag { color: var(--coral); }

/* pull quote */
.pullquote {
  font-family: var(--serif); font-size: 1.4rem; line-height: 1.4; color: var(--teal-dark);
  border-left: 3px solid var(--teal); padding: .3rem 0 .3rem 1.1rem; margin: 1.8rem 0;
}

/* =====================================================================
   Perspectives (debate) — two columns
   ===================================================================== */
.perspectives { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.6rem 0; }
.persp { border: 1px solid var(--line); border-top-width: 4px; border-radius: var(--radius-sm); padding: 1.1rem 1.2rem; background: var(--paper-2); }
.persp h4 { margin-top: 0; display: flex; align-items: center; gap: .45rem; }
.persp ul { margin: .4rem 0 0; padding-left: 1.1rem; }
.persp li { margin-bottom: .5rem; }
.persp.for      { border-top-color: var(--navy); background: var(--navy-tint); }
.persp.for h4   { color: var(--navy); }
.persp.against  { border-top-color: var(--plum); background: var(--plum-tint); }
.persp.against h4 { color: var(--plum); }
@media (max-width: 680px) { .perspectives { grid-template-columns: 1fr; } }

/* "You decide" prompt */
.decide {
  border: 2px dashed var(--gold); border-radius: var(--radius); background: var(--gold-tint);
  padding: 1.1rem 1.3rem; margin: 1.6rem 0;
}
.decide .c-tag { color: #8a6510; font-weight: 700; font-size: .73rem; letter-spacing: .1em; text-transform: uppercase; }

/* =====================================================================
   Comparison table
   ===================================================================== */
.table-wrap { overflow-x: auto; margin: 1.5rem 0; }
table.compare { border-collapse: collapse; width: 100%; background: var(--paper-2); border: 1px solid var(--line-2); border-radius: var(--radius-sm); overflow: hidden; }
table.compare caption { caption-side: top; text-align: left; font-size: .85rem; color: var(--ink-soft); margin-bottom: .5rem; }
table.compare th, table.compare td { text-align: left; padding: .7rem .85rem; border-bottom: 1px solid var(--line); vertical-align: top; font-size: .96rem; }
table.compare thead th { background: var(--ink); color: #fff; font-family: var(--sans); font-weight: 600; }
table.compare tbody tr:nth-child(even) { background: rgba(0,0,0,.018); }
table.compare th[scope=row] { font-weight: 700; color: var(--ink); width: 30%; }

/* =====================================================================
   Timeline (horizontal scroll on small screens)
   ===================================================================== */
.timeline { position: relative; margin: 1.8rem 0; padding-left: 1.4rem; border-left: 2px solid var(--line-2); }
.tl-item { position: relative; padding: 0 0 1.3rem .3rem; }
.tl-item::before {
  content: ""; position: absolute; left: calc(-1.4rem - 1px); top: .35rem;
  width: .7rem; height: .7rem; border-radius: 50%; background: var(--teal);
  box-shadow: 0 0 0 4px var(--teal-tint); transform: translateX(-50%);
}
.tl-item.alert::before { background: var(--coral); box-shadow: 0 0 0 4px var(--coral-tint); }
.tl-date { font-family: var(--sans); font-weight: 700; font-size: .82rem; color: var(--teal-dark); letter-spacing: .02em; }
.tl-item.alert .tl-date { color: var(--coral); }
.tl-body { margin-top: .15rem; }
.tl-body p { margin: .1rem 0 0; font-size: .98rem; }

/* =====================================================================
   Map figure
   ===================================================================== */
figure.map { margin: 1.6rem 0; }
figure.map .map-frame { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow-sm); }
figure figcaption { font-size: .85rem; color: var(--ink-soft); margin-top: .6rem; }
.map-legend { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: .7rem; font-size: .82rem; color: var(--ink-soft); }
.map-legend span { display: inline-flex; align-items: center; gap: .35rem; }
.map-legend i { width: .8rem; height: .8rem; border-radius: 50%; display: inline-block; }

/* two-column media layout (text beside figure) */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 1.6rem; align-items: start; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; } }

/* small inline source citation */
.cite { font-size: .8em; vertical-align: super; line-height: 0; }
.cite a { color: var(--coral); text-decoration: none; font-weight: 700; }
.source-note { font-size: .82rem; color: var(--ink-soft); margin-top: 1.5rem; padding-top: .8rem; border-top: 1px solid var(--line); }

/* =====================================================================
   Quiz engine UI
   ===================================================================== */
.quiz {
  background: var(--paper-2); border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.7rem; margin: 2.2rem 0; box-shadow: var(--shadow);
}
.quiz-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: .3rem; }
.quiz-head .eyebrow { margin: 0; }
.quiz-progress { font-size: .85rem; color: var(--ink-soft); font-family: var(--sans); }
.quiz h3 { margin: .2rem 0 1rem; }
.q-prompt { font-size: 1.18rem; font-family: var(--serif); margin: .2rem 0 1.1rem; }
.q-options { display: flex; flex-direction: column; gap: .6rem; }
.q-option {
  text-align: left; width: 100%; font: inherit; cursor: pointer;
  background: var(--paper); border: 1.5px solid var(--line-2); border-radius: 10px;
  padding: .8rem 1rem; display: flex; align-items: center; gap: .7rem;
  transition: border-color .12s ease, background .12s ease, transform .06s ease;
}
.q-option:hover:not(:disabled) { border-color: var(--teal); background: var(--teal-tint); }
.q-option:active:not(:disabled) { transform: scale(.995); }
.q-option .key {
  flex: none; width: 1.7rem; height: 1.7rem; border-radius: 50%; display: grid; place-items: center;
  background: var(--paper-2); border: 1.5px solid var(--line-2); font-weight: 700; font-size: .9rem; color: var(--ink-soft);
}
.q-option.correct { border-color: var(--teal); background: var(--teal-tint); }
.q-option.correct .key { background: var(--teal); color: #fff; border-color: var(--teal); }
.q-option.wrong { border-color: var(--coral); background: var(--coral-tint); }
.q-option.wrong .key { background: var(--coral); color: #fff; border-color: var(--coral); }
.q-option:disabled { cursor: default; }
.q-option.dim { opacity: .55; }

.q-feedback {
  margin-top: 1.1rem; padding: .9rem 1.1rem; border-radius: 10px; font-size: .98rem;
  border-left: 4px solid var(--line-2); background: var(--paper); display: none;
}
.q-feedback.show { display: block; }
.q-feedback.right { border-left-color: var(--teal); background: var(--teal-tint); }
.q-feedback.wrong-fb { border-left-color: var(--coral); background: var(--coral-tint); }
.q-feedback .verdict { font-weight: 700; display: block; margin-bottom: .2rem; }

.quiz-actions { margin-top: 1.2rem; display: flex; gap: .7rem; flex-wrap: wrap; }

/* buttons */
.btn {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 10px;
  padding: .6rem 1.2rem; border: 1.5px solid var(--teal); background: var(--teal); color: #fff;
  text-decoration: none; display: inline-flex; align-items: center; gap: .5rem;
  transition: background .12s ease, transform .06s ease;
}
.btn:hover { background: var(--teal-dark); color: #fff; }
.btn:active { transform: scale(.98); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.btn.ghost { background: transparent; color: var(--teal-dark); }
.btn.ghost:hover { background: var(--teal-tint); }
.btn.big { padding: .8rem 1.6rem; font-size: 1.05rem; }

/* quiz results */
.quiz-result { text-align: center; padding: .5rem 0 .2rem; }
.score-ring {
  width: 8rem; height: 8rem; margin: .5rem auto 1rem; border-radius: 50%;
  display: grid; place-items: center; background: conic-gradient(var(--teal) var(--pct,0%), var(--line) 0);
}
.score-ring .inner {
  width: 6.4rem; height: 6.4rem; border-radius: 50%; background: var(--paper-2);
  display: grid; place-items: center; flex-direction: column;
}
.score-ring .pctnum { font-family: var(--serif); font-size: 1.9rem; font-weight: 600; line-height: 1; }
.score-ring .frac { font-size: .8rem; color: var(--ink-soft); }
.result-msg { font-size: 1.1rem; margin-bottom: 1rem; }

/* =====================================================================
   Progress (home) + badges
   ===================================================================== */
.progress-panel {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem 1.4rem; margin: 1.4rem 0; box-shadow: var(--shadow-sm);
  display: flex; align-items: center; gap: 1.3rem; flex-wrap: wrap;
}
.progress-bar { flex: 1 1 14rem; height: .7rem; background: var(--line); border-radius: 999px; overflow: hidden; min-width: 12rem; }
.progress-bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--teal), var(--gold)); width: 0; transition: width .5s ease; }
.progress-stars { letter-spacing: .15rem; font-size: 1.2rem; color: var(--gold); }
.reset-link { background: none; border: 0; color: var(--ink-soft); font: inherit; font-size: .82rem; cursor: pointer; text-decoration: underline; }
.reset-link:hover { color: var(--coral); }

/* badge (final certificate) */
.cert {
  border: 3px double var(--gold); border-radius: var(--radius); background: var(--gold-tint);
  padding: 2rem; text-align: center; margin: 1.6rem 0;
}
.cert .seal { font-size: 3rem; }
.cert h2 { margin: .3rem 0; }

/* =====================================================================
   Footer
   ===================================================================== */
.site-footer { border-top: 1px solid var(--line); margin-top: 3rem; background: var(--paper-2); }
.site-footer .wrap-wide { padding-top: 1.6rem; padding-bottom: 2rem; display: flex; gap: 1rem 2rem; flex-wrap: wrap; justify-content: space-between; align-items: center; }
.site-footer .f-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.site-footer a { color: var(--ink-soft); text-decoration: none; font-size: .9rem; }
.site-footer a:hover { color: var(--teal-dark); }
.site-footer .f-note { font-size: .8rem; color: var(--ink-soft); max-width: 40ch; }

/* prev/next nav at bottom of sections */
.page-nav { display: flex; justify-content: space-between; gap: 1rem; margin: 2.4rem 0 1rem; flex-wrap: wrap; }
.page-nav a { text-decoration: none; color: var(--teal-dark); font-weight: 600; font-size: .95rem; padding: .5rem .2rem; }
.page-nav a:hover { color: var(--teal); }
.page-nav .nxt { margin-left: auto; text-align: right; }

/* glossary */
.glossary dt { font-family: var(--serif); font-weight: 600; font-size: 1.08rem; color: var(--teal-dark); margin-top: 1.1rem; }
.glossary dd { margin: .15rem 0 0; color: var(--ink-soft); }

/* sources list */
ol.sources { padding-left: 1.4rem; }
ol.sources li { margin-bottom: .55rem; font-size: .94rem; }
ol.sources a { word-break: break-word; }

/* misc */
.tag-row { display: flex; flex-wrap: wrap; gap: .4rem; margin: .6rem 0 0; }
.tag { font-size: .78rem; background: var(--teal-tint); color: var(--teal-dark); padding: .2rem .6rem; border-radius: 999px; font-weight: 600; }

@media print { .site-header, .site-footer, .quiz-actions, .nav-toggle { display: none; } }