/* ============================================================
   ZOMBIE SURVIVAL INDEX — landing page
   Everything is in this one file. Nothing to install.
   ============================================================ */

:root{
  --paper:#d9ddd3;
  --paper-deep:#c6cbbe;
  --placard:#eef0e9;
  --ink:#191d19;
  --ink-soft:#565e56;
  --line:#a9b0a3;
  --amber:#d9962a;
  --alert:#a83224;
  --stamp:#2c4c6b;
  --olive:#4c7a3f;
  --exceptional:#2f6b3b;
  --strong:#6f8738;
  --moderate:#d2a72c;
  --vulnerable:#c96a2b;
  --critical:#a83224;

  --display:"Big Shoulders Display",Impact,sans-serif;
  --body:"IBM Plex Sans",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --pad:clamp(1.1rem,4vw,3rem);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:34px 34px;
  background-position:-1px -1px;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(ellipse at 50% 0%,rgba(238,240,233,.85),rgba(217,221,211,0) 70%);
}
.wrap{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 var(--pad)}

/* ---------- masthead ---------- */
.masthead{border-bottom:2px solid var(--ink);background:var(--placard)}
.masthead .wrap{display:flex;align-items:center;gap:.85rem;padding-top:.85rem;padding-bottom:.85rem;flex-wrap:wrap}
.seal{width:34px;height:34px;flex:none}
.wordmark{font-family:var(--display);font-weight:900;font-size:1.32rem;letter-spacing:.055em;line-height:1;text-transform:uppercase}
.wordmark span{display:block;font-family:var(--mono);font-size:.55rem;font-weight:500;letter-spacing:.22em;color:var(--ink-soft);margin-top:.22rem}
.masthead nav{margin-left:auto;display:flex;gap:1.15rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.13em;text-transform:uppercase}
.masthead nav a{color:var(--ink-soft);text-decoration:none;padding-bottom:2px;border-bottom:1px solid transparent}
.masthead nav a:hover,.masthead nav a:focus-visible{color:var(--ink);border-bottom-color:var(--amber)}

.ticker{background:var(--ink);color:var(--paper);font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;padding:.5rem 0}
.ticker .wrap{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap}
.dot{width:7px;height:7px;border-radius:50%;background:var(--amber);flex:none;animation:blink 2.4s infinite}
@keyframes blink{0%,45%{opacity:1}55%,100%{opacity:.25}}

/* ---------- hero ---------- */
.hero{padding:clamp(2.4rem,6vw,4.2rem) 0 clamp(1.6rem,4vw,2.4rem)}
.eyebrow{font-family:var(--mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--alert);margin-bottom:.9rem}
h1{
  font-family:var(--display);font-weight:900;
  font-size:clamp(3rem,12vw,7.5rem);line-height:.86;
  letter-spacing:-.01em;text-transform:uppercase;max-width:14ch;
}
h1 em{font-style:normal;color:var(--alert)}
.lede{margin-top:1.4rem;max-width:52ch;font-size:clamp(1rem,2.2vw,1.16rem);color:var(--ink-soft)}
.lede strong{color:var(--ink);font-weight:600}

/* ---------- survey board ---------- */
.board-section{padding-bottom:clamp(2.5rem,6vw,4rem)}
.board-shell{display:grid;grid-template-columns:1fr;gap:1.15rem}
@media(min-width:900px){.board-shell{grid-template-columns:1fr 300px;align-items:start}}

.panel{background:var(--placard);border:2px solid var(--ink);box-shadow:5px 5px 0 rgba(25,29,25,.16)}
.panel-hd{
  display:flex;justify-content:space-between;align-items:center;gap:.6rem;flex-wrap:wrap;
  padding:.6rem .85rem;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-soft);
}
.panel-bd{padding:.85rem}

.board{position:relative;display:flex;flex-direction:column;gap:5px;overflow:hidden;padding:3px}
.board::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,transparent 42%,rgba(217,150,42,.5) 50%,transparent 58%);
  transform:translateX(-110%);animation:sweep 2.6s ease-out .3s 1 forwards;
}
@keyframes sweep{to{transform:translateX(110%)}}
.board-row{display:grid;grid-template-columns:repeat(11,1fr);gap:5px}

.tile{
  aspect-ratio:1/1;border:0;padding:0;background:var(--paper-deep);
  color:var(--ink-soft);font-family:var(--mono);font-size:clamp(.44rem,1.35vw,.68rem);
  font-weight:600;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  cursor:default;opacity:0;animation:pop .4s ease-out forwards;
}
.tile.empty{background:transparent;animation:none;opacity:1}
.tile.scored{background:var(--olive);color:var(--placard);cursor:pointer;text-decoration:none}
.tile.scored:hover,.tile.scored:focus-visible,.tile.on{outline:2px solid var(--ink);outline-offset:1px;transform:scale(1.12);z-index:2}
.tile.scored{transition:transform .12s ease}
@keyframes pop{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@media(max-width:560px){
  .tile{font-size:clamp(.35rem,2.9vw,.55rem);letter-spacing:-.03em}
  .tile.scored{font-weight:700}
}

/* ---------- readout ---------- */
.readout{position:sticky;top:1rem}
.ro-state{font-family:var(--display);font-weight:900;font-size:2.1rem;line-height:1;text-transform:uppercase}
.ro-score{font-family:var(--display);font-weight:900;font-size:4.6rem;line-height:.85;letter-spacing:-.02em}
.ro-score small{font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.12em;color:var(--ink-soft);display:block;margin-top:.35rem}
.ro-rows{margin:.95rem 0 0;border-top:1px solid var(--line)}
.ro-row{display:flex;justify-content:space-between;gap:.6rem;padding:.42rem 0;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:.72rem}
.ro-row span:first-child{color:var(--ink-soft);letter-spacing:.06em}
.ro-row b{font-weight:600}
.ro-empty{font-family:var(--mono);font-size:.78rem;color:var(--ink-soft);line-height:1.7}

/* Button visuals live in zsi.css; the home cards just need tighter spacing. */
.btn{margin-top:1rem}
.legend{display:flex;gap:.9rem;flex-wrap:wrap;font-family:var(--mono);font-size:.6rem;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-soft)}
.swatch{display:inline-block;width:9px;height:9px;margin-right:.32rem;vertical-align:-1px}

/* ---------- paper sheets (text sits on solid paper, grid shows around it) ---------- */
.sheet{
  background:var(--placard);
  border:2px solid var(--ink);
  box-shadow:6px 6px 0 rgba(25,29,25,.14);
  padding:clamp(1.4rem,4vw,2.4rem);
}
.wrap.sheet{width:calc(100% - (2 * var(--pad)))}

/* ---------- generic section ---------- */
.section{padding:clamp(1rem,3vw,1.7rem) 0}
.sec-label{font-family:var(--mono);font-size:.68rem;letter-spacing:.22em;text-transform:uppercase;color:var(--alert);margin-bottom:.7rem}
h2{font-family:var(--display);font-weight:900;font-size:clamp(2rem,6vw,3.4rem);line-height:.92;text-transform:uppercase;max-width:20ch}
.sec-intro{margin-top:.9rem;max-width:56ch;color:var(--ink-soft)}

/* ---------- scenarios ---------- */
.cards{display:grid;gap:1rem;margin-top:2rem;grid-template-columns:1fr}
@media(min-width:720px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--placard);border:2px solid var(--ink);padding:1.2rem;display:flex;flex-direction:column;gap:.55rem}
.card-tag{font-family:var(--mono);font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--placard);background:var(--ink);align-self:flex-start;padding:.2rem .5rem}
.card h3{font-family:var(--display);font-weight:700;font-size:1.65rem;line-height:1;text-transform:uppercase}
.card p{font-size:.92rem;color:var(--ink-soft)}
.card .src{margin-top:auto;padding-top:.7rem;font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);border-top:1px solid var(--line)}
.model-title{color:var(--stamp);font-size:.76rem;font-weight:700;letter-spacing:.12em}
.model-note{display:block;margin-top:.45rem;font-size:.62rem;font-style:italic;letter-spacing:.08em;line-height:1.55;text-transform:none}

/* ---------- factors ---------- */
.factors:not(:has(.frow)){margin-top:2rem;display:grid;gap:0 1.6rem;grid-template-columns:1fr}
@media(min-width:640px){.factors:not(:has(.frow)){grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.factors:not(:has(.frow)){grid-template-columns:repeat(3,1fr)}}
.factor{display:flex;gap:.7rem;padding:.5rem 0;border-bottom:1px solid var(--line);font-size:.88rem}
.factor i{font-style:normal;font-family:var(--mono);font-size:.7rem;color:var(--amber);padding-top:.2rem;min-width:1.6rem}

/* ---------- featured report ---------- */
.feature{display:grid;gap:1.4rem;margin-top:2rem;grid-template-columns:1fr;align-items:center}
@media(min-width:820px){.feature{grid-template-columns:250px 1fr}}
.big-score{background:var(--ink);color:var(--paper);border:2px solid var(--ink);padding:1.4rem;text-align:center}
.big-score .n{font-family:var(--display);font-weight:900;font-size:6rem;line-height:.82;color:var(--amber)}
.big-score .g{font-family:var(--mono);font-size:.75rem;letter-spacing:.2em;text-transform:uppercase;margin-top:.5rem}
.feature h3{font-family:var(--display);font-weight:900;font-size:clamp(1.8rem,5vw,2.6rem);line-height:.95;text-transform:uppercase}
.feature p{margin-top:.7rem;color:var(--ink-soft);max-width:56ch}
.pull{margin-top:1rem;padding-left:.9rem;border-left:3px solid var(--alert);font-family:var(--display);font-weight:700;font-size:1.3rem;text-transform:uppercase;line-height:1.05}
.btn-inline{width:auto;margin-top:1.1rem}

/* ---------- follow ---------- */
.follow-links{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.6rem;align-items:center}

/* ---------- footer ---------- */
footer{border-top:2px solid var(--ink);background:var(--ink);color:var(--paper);padding:2.2rem 0;margin-top:0}
footer .wrap{display:flex;gap:1.2rem;justify-content:space-between;flex-wrap:wrap;font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;line-height:1.9}
footer p{max-width:46ch;color:#a9b0a3}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .tile{opacity:1}
  .board::after{display:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive pass ---------- */
html,body{max-width:100%;overflow-x:hidden}
img,svg,video{max-width:100%;height:auto}
@media(max-width:720px){
  .masthead .wrap{gap:.6rem}
  .masthead nav{margin-left:0;width:100%;gap:.85rem;flex-wrap:wrap;font-size:.62rem;letter-spacing:.1em}
  .wordmark{font-size:1.1rem}
  .ticker{font-size:.58rem;letter-spacing:.14em}
}
.ro-state{font-size:clamp(1.55rem,6vw,2.1rem)}
.ro-score{font-size:clamp(3.1rem,12vw,4.6rem)}
@media(max-width:560px){
  .board-row{gap:3px}
  .board{padding:2px}
  .board-section .wrap{padding-left:.55rem;padding-right:.55rem}
}
@media(max-width:899px){
  .readout{position:static}
}
.tile.scored{touch-action:manipulation}