/* =========================================================================
   Global Youth Literacy Tracker — style.css
   Dark, immersive theme. Colors follow the dataviz reference palette
   (blue sequential ramp = literacy magnitude).
   ========================================================================= */
:root{
  --page:#0d0d0d; --plane:#111318; --surface:rgba(22,23,28,0.74); --surface-solid:#16171c;
  --ink:#ffffff; --ink-2:#c3c2b7; --muted:#898781;
  --border:rgba(255,255,255,0.10); --hairline:rgba(255,255,255,0.14);
  --seq-100:#cde2fb; --seq-250:#86b6ef; --seq-400:#3987e5;
  --seq-500:#256abf; --seq-600:#184f95; --seq-700:#0d366b;
  --critical:#d03b3b; --good:#0ca30c; --warning:#fab219;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --nav-h:64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--page);color:var(--ink);font-family:var(--font);
  -webkit-font-smoothing:antialiased;line-height:1.6}
a{color:var(--seq-250);text-decoration:none}
h1,h2,h3{margin:0;font-weight:700;line-height:1.15}
.container{width:100%;max-width:1080px;margin:0 auto;padding:0 24px}

/* ---- Navigation ---------------------------------------------------------- */
.nav{position:sticky;top:0;z-index:100;height:var(--nav-h);display:flex;align-items:center;
  justify-content:space-between;padding:0 24px;
  background:rgba(13,13,13,0.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border)}
.nav-logo{display:flex;align-items:center;gap:11px}
.nav-logo-text{display:flex;flex-direction:column;line-height:1.05}
.nav-logo-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.nav-logo-sub{font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--seq-250);font-weight:600}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0}
.nav-links a{padding:8px 14px;border-radius:9px;font-size:13.5px;color:var(--ink-2);transition:.15s}
.nav-links a:hover{color:var(--ink);background:rgba(255,255,255,0.06)}
.nav-links a.active{color:var(--ink)}
.nav-links a.nav-cta{background:var(--seq-400);color:#fff;font-weight:600}
.nav-links a.nav-cta:hover{background:var(--seq-500)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.2s}

/* ---- Glass panels (shared) ---------------------------------------------- */
.panel{background:var(--surface);
  backdrop-filter:blur(14px) saturate(1.2);-webkit-backdrop-filter:blur(14px) saturate(1.2);
  border:1px solid var(--border);border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,0.45)}

/* ---- Globe hero section -------------------------------------------------- */
.globe-section{position:relative;height:calc(100vh - var(--nav-h));min-height:520px;overflow:hidden;background:var(--page)}
/* touch-action:none lets finger drags rotate / pinch-zoom the globe instead of
   scrolling the page (use the nav links to jump to the table / about on mobile) */
#globe{position:absolute;inset:0;z-index:0;touch-action:none}
.globe-section .panel{position:absolute;z-index:10}

#intro{top:18px;left:18px;padding:16px 20px;max-width:330px}
#intro .kicker{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--seq-250);font-weight:700;margin-bottom:6px}
#intro h1{font-size:20px}
#intro .sub{margin-top:8px;font-size:12.5px;color:var(--ink-2);line-height:1.45}
#intro .src{margin-top:10px;font-size:11px;color:var(--muted);line-height:1.4}
#intro .src b{color:var(--ink-2);font-weight:600}

#controls{top:18px;right:18px;padding:14px;width:248px}
#search{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--hairline);
  background:rgba(0,0,0,0.35);color:var(--ink);font-family:var(--font);font-size:13.5px;outline:none}
#search::placeholder{color:var(--muted)}
#search:focus{border-color:var(--seq-400)}
.ctl-row{display:flex;align-items:center;gap:9px;margin-top:12px;font-size:12.5px;color:var(--ink-2)}
.switch{position:relative;width:38px;height:22px;flex:0 0 auto;cursor:pointer}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:rgba(255,255,255,0.16);border-radius:22px;transition:.2s}
.slider:before{content:"";position:absolute;height:16px;width:16px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked+.slider{background:var(--seq-400)}
.switch input:checked+.slider:before{transform:translateX(16px)}
.btn{margin-top:12px;width:100%;padding:9px;border-radius:10px;border:1px solid var(--hairline);
  background:rgba(255,255,255,0.05);color:var(--ink-2);font-family:var(--font);font-size:12.5px;cursor:pointer;transition:.15s}
.btn:hover{background:rgba(255,255,255,0.10);color:var(--ink)}

#legend{bottom:18px;left:18px;padding:14px 16px;width:270px}
#legend .lg-title{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:10px}
#legend .bar{height:12px;border-radius:6px;
  background:linear-gradient(90deg,var(--seq-700),var(--seq-600),var(--seq-500),var(--seq-400),var(--seq-250),var(--seq-100))}
#legend .ticks{display:flex;justify-content:space-between;margin-top:6px;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
#legend .lg-note{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:11.5px;color:var(--ink-2)}
#legend .ring-dot{width:11px;height:11px;border-radius:50%;flex:0 0 auto;background:var(--critical);box-shadow:0 0 0 3px rgba(208,59,59,0.35)}
#legend .est-note{margin-top:7px;font-size:11px;color:var(--muted);line-height:1.4}

#stats{bottom:18px;left:50%;transform:translateX(-50%);display:flex;overflow:hidden}
#stats .stat{padding:12px 22px;text-align:center;border-right:1px solid var(--border)}
#stats .stat:last-child{border-right:none}
#stats .val{font-size:22px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
#stats .lbl{font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:6px}

#detail{top:50%;right:18px;transform:translate(120%,-50%);width:320px;padding:22px;
  transition:transform .32s cubic-bezier(.2,.8,.2,1);opacity:0}
#detail.open{transform:translate(0,-50%);opacity:1}
#detail .close{position:absolute;top:12px;right:14px;font-size:20px;color:var(--muted);cursor:pointer;line-height:1;background:none;border:none}
#detail .close:hover{color:var(--ink)}
#detail .d-name{font-size:20px;margin:0 24px 2px 0}
#detail .d-region{font-size:12px;color:var(--muted);margin-bottom:16px}
#detail .d-rate{font-size:52px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums}
#detail .d-rate span{font-size:24px;color:var(--ink-2);font-weight:600}
#detail .d-year{font-size:12.5px;color:var(--ink-2);margin-top:6px}
#detail .meter{margin-top:18px;height:10px;border-radius:5px;background:rgba(255,255,255,0.10);overflow:hidden}
#detail .meter>i{display:block;height:100%;border-radius:5px}
#detail .d-cmp{margin-top:12px;font-size:12.5px;color:var(--ink-2);line-height:1.5}
#detail .d-cmp b{color:var(--ink)}
#detail .badge{display:inline-block;margin-top:14px;padding:4px 10px;border-radius:999px;font-size:11px;font-weight:600;
  background:rgba(250,178,25,0.16);color:var(--warning);border:1px solid rgba(250,178,25,0.35)}

#loading{position:absolute;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;
  background:var(--page);color:var(--muted);font-size:14px;letter-spacing:.03em;transition:opacity .4s}
#loading.hide{opacity:0;pointer-events:none}

/* globe.gl hover tooltip */
.tip{background:var(--surface-solid);border:1px solid var(--border);border-radius:10px;padding:9px 12px;
  box-shadow:0 8px 24px rgba(0,0,0,.5);pointer-events:none}
.tip .t-name{font-size:13px;font-weight:700;color:var(--ink)}
.tip .t-rate{font-size:12px;color:var(--ink-2);margin-top:2px;font-variant-numeric:tabular-nums}
.tip .t-hint{font-size:10.5px;color:var(--muted);margin-top:4px}

/* ---- Fun-facts toast (fixed, bottom-right) ------------------------------- */
.factbox{position:fixed;bottom:22px;right:22px;z-index:200;width:412px;max-width:calc(100vw - 40px);
  padding:22px 26px 22px 24px;border-radius:16px;background:var(--surface-solid);
  border:1px solid var(--border);border-left:4px solid var(--muted);
  box-shadow:0 18px 52px rgba(0,0,0,.55);
  transform:translateX(130%);opacity:0;
  transition:transform .5s cubic-bezier(.2,.8,.2,1),opacity .4s}
.factbox.show{transform:translateX(0);opacity:1}
.fb-close{position:absolute;top:10px;right:13px;background:none;border:none;color:var(--muted);
  font-size:20px;line-height:1;cursor:pointer;padding:2px}
.fb-close:hover{color:var(--ink)}
.fb-title{font-size:12.5px;font-weight:700;letter-spacing:.02em;color:#f0906f;margin-bottom:9px}
.fb-text{font-size:16.5px;color:var(--ink-2);line-height:1.6;margin-right:8px}
.fb-text b{color:var(--ink);font-weight:600}
.fb-fine{margin-top:12px;font-size:10.5px;font-style:italic;color:var(--muted);opacity:.85}
.factbox.fb-real{border-left-color:var(--good)}
.factbox.fb-prop{border-left-color:var(--warning)}
.factbox.fb-demo{border-left-color:#9085e9}
.factbox.fb-dog{border-left-color:#e8663d}
.factbox.fb-pickle{border-left-color:#7cb342}

/* ---- Content sections ---------------------------------------------------- */
.content{padding:72px 0;border-top:1px solid var(--border)}
.content.alt{background:var(--plane)}
.section-eyebrow{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--seq-250);font-weight:700;margin-bottom:10px}
.content h2{font-size:28px;margin-bottom:14px}
.content .lead{font-size:15px;color:var(--ink-2);max-width:70ch}
.about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}
.about-card{padding:22px;border-radius:14px;background:var(--surface-solid);border:1px solid var(--border)}
.about-card h3{font-size:15px;margin-bottom:8px;color:var(--ink)}
.about-card p{font-size:13px;color:var(--ink-2);margin:0}
.about-card .big{font-size:30px;font-weight:700;color:var(--seq-250);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:6px}

/* ---- Data table ---------------------------------------------------------- */
.table-tools{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:26px 0 16px}
.table-tools input{flex:1;min-width:200px;padding:10px 14px;border-radius:10px;border:1px solid var(--hairline);
  background:var(--surface-solid);color:var(--ink);font-family:var(--font);font-size:14px;outline:none}
.table-tools input:focus{border-color:var(--seq-400)}
.table-tools .count{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:14px}
table.data{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}
table.data th,table.data td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--border)}
table.data thead th{position:sticky;top:0;background:var(--surface-solid);color:var(--ink-2);
  font-weight:600;font-size:11.5px;letter-spacing:.04em;text-transform:uppercase;cursor:pointer;user-select:none;white-space:nowrap}
table.data thead th:hover{color:var(--ink)}
table.data thead th .arrow{color:var(--seq-250);font-size:10px}
table.data td.num,table.data th.num{text-align:right;font-variant-numeric:tabular-nums}
table.data tbody tr{cursor:pointer;transition:background .12s}
table.data tbody tr:hover{background:rgba(57,135,229,0.10)}
.rate-cell{display:inline-flex;align-items:center;gap:8px;justify-content:flex-end}
.rate-swatch{width:10px;height:10px;border-radius:50%;flex:0 0 auto}
.tag-est{display:inline-block;padding:2px 7px;border-radius:999px;font-size:10.5px;font-weight:600;
  background:rgba(250,178,25,0.14);color:var(--warning);border:1px solid rgba(250,178,25,0.3)}

/* ---- Footer -------------------------------------------------------------- */
.footer{background:#0a0a0a;border-top:1px solid var(--border);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:32px}
.footer-logo{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.footer-about p{font-size:13.5px;color:var(--ink-2);max-width:36ch}
.footer-heading{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:700;margin-bottom:14px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:9px;font-size:13.5px}
.footer-links a{color:var(--ink-2)}
.footer-links a:hover{color:var(--ink)}
.footer-bottom{margin-top:38px;padding-top:20px;border-top:1px solid var(--border);
  font-size:12px;color:var(--muted);text-align:center}

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width:820px){
  .nav-toggle{display:flex}
  .nav-links{position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(13,13,13,0.97);border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .25s ease}
  .nav-links.open{max-height:320px}
  .nav-links a{padding:14px 24px;border-radius:0;border-bottom:1px solid var(--border)}
  .about-grid,.footer-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  /* declutter so the globe gets most of the screen and is easy to touch */
  #intro{top:10px;left:10px;right:10px;max-width:none;padding:12px 15px}
  #intro h1{font-size:17px}
  #intro .kicker{margin-bottom:4px}
  #intro .sub{font-size:11.5px;margin-top:6px}
  #intro .src{display:none}
  #controls{top:auto;bottom:12px;left:10px;right:10px;width:auto;padding:12px}
  #legend,#stats{display:none}
  #detail{top:auto;bottom:12px;right:10px;left:10px;width:auto;transform:translateY(180%)}
  #detail.open{transform:translateY(0)}
  /* pop-up sits above the bottom controls, clear of the intro at the top */
  .factbox{top:auto;bottom:160px;left:10px;right:auto;width:calc(100vw - 20px);padding:16px 18px}
  .fb-text{font-size:15px}
}