/* South Africa Demographics - shared styles (Palette 1 "Midnight & Gold"). */
:root{
  --pal-0:#020613;--pal-1:#0A1022;--pal-2:#1A1F2D;--pal-3:#343944;--pal-4:#585D67;--pal-5:#D5D6D8;--pal-6:#D9A238;--pal-7:#F0B53A;
  --white:#FFFFFF;
  --ok:#3FB97F;--err:#E5625C;--warn:#F0B53A;
  --bg:var(--pal-0);
  --surface:rgba(10,16,34,.84);
  --surface-2:rgba(26,31,45,.9);
  --line:rgba(213,214,216,.13);
  --line-2:rgba(213,214,216,.24);
  --text:var(--white);
  --text-2:rgba(255,255,255,.74);
  --text-3:rgba(213,214,216,.6);
  --gold:var(--pal-6);--gold-2:var(--pal-7);--silver:var(--pal-5);
  --radius:16px;
  --gutter:clamp(16px,4vw,48px);
  --font:"Segoe UI",system-ui,Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  min-height:100vh;color:var(--text);font-family:var(--font);line-height:1.5;
  background:
    radial-gradient(circle at 80% 0%,rgba(217,162,56,.13),transparent 40%),
    radial-gradient(circle at 0% 60%,rgba(213,214,216,.05),transparent 40%),
    linear-gradient(160deg,var(--pal-1),var(--pal-0) 60%);
  background-color:var(--pal-0);background-attachment:fixed;
  overflow-x:hidden;
}
body::before{
  position:fixed;inset:0;content:"";pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:48px 48px;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid var(--gold-2);outline-offset:3px;border-radius:6px}
svg text{font-family:var(--font)}

/* ---------- top bar & navigation ---------- */
.topbar{
  position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:16px;
  padding:12px var(--gutter);background:rgba(2,6,19,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{font-weight:800;letter-spacing:.03em;white-space:nowrap}
.topbar .brand span{color:var(--gold)}
.crumbs{color:var(--text-3);font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumbs a:hover{color:var(--gold-2)}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap;justify-content:flex-end}
.nav a{padding:7px 12px;border-radius:999px;font-size:.88rem;font-weight:600;color:var(--text-2);transition:background .2s,color .2s}
.nav a:hover{background:rgba(255,255,255,.08);color:var(--white)}
.nav a[aria-current="page"]{background:var(--gold);color:var(--pal-0)}
.nav-toggle{display:none;margin-left:auto;padding:8px 12px;border:1px solid var(--line-2);border-radius:999px;font-weight:700}
.di-user{margin-left:8px}
@media (max-width:1100px){
  .nav-toggle{display:inline-flex}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;padding:12px var(--gutter);
       background:rgba(2,6,19,.97);border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a{padding:10px 14px}
  .crumbs{display:none}
}

/* ---------- layout ---------- */
main{position:relative;z-index:1;width:min(1320px,100%);margin:0 auto;padding:0 var(--gutter) 64px}
.hero{padding:clamp(36px,6vw,72px) 0 28px}
.eyebrow{color:var(--gold);font-size:.78rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase}
h1{margin:10px 0 14px;font-size:clamp(2.2rem,6vw,4.4rem);line-height:1;letter-spacing:-.035em}
h1 em{font-style:normal;background:linear-gradient(100deg,var(--gold-2),var(--gold) 40%,var(--silver) 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{max-width:760px;font-size:clamp(1rem,1.6vw,1.18rem);color:var(--text-2)}
section.block{margin-top:44px}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.block-head h2{font-size:clamp(1.35rem,2.6vw,1.9rem);letter-spacing:-.02em}
.block-head p{color:var(--text-2);max-width:720px;margin-top:4px}
.chapter-no{display:inline-block;margin-right:10px;color:var(--gold);font-variant-numeric:tabular-nums}

.grid{display:grid;gap:18px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g-kpi{grid-template-columns:repeat(auto-fill,minmax(210px,1fr))}
.span-2{grid-column:span 2}
@media (max-width:980px){.g-3,.g-4{grid-template-columns:repeat(2,minmax(0,1fr))}.g-2{grid-template-columns:1fr}.span-2{grid-column:auto}}
@media (max-width:620px){.g-3,.g-4{grid-template-columns:1fr}}

.card{
  position:relative;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:0 18px 50px rgba(0,0,0,.28);backdrop-filter:blur(10px);
}
.card h3{font-size:1.02rem;margin-bottom:2px}
.card .sub{color:var(--text-3);font-size:.84rem;margin-bottom:10px}
.card.metal{background:
  linear-gradient(145deg,rgba(213,214,216,.08),rgba(10,16,34,.9) 35%,rgba(2,6,19,.95)),var(--surface)}
.card-actions{position:absolute;top:14px;right:14px;display:flex;gap:6px}
.chart{width:100%;min-height:120px;position:relative}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.note{color:var(--text-3);font-size:.82rem;margin-top:8px}
.note b{color:var(--text-2)}

/* ---------- KPI tiles ---------- */
.kpi{cursor:pointer;transition:transform .2s,border-color .2s;display:flex;flex-direction:column;gap:4px;text-align:left}
.kpi:hover,.kpi:focus-visible{transform:translateY(-3px);border-color:var(--gold)}
.kpi .k-title{color:var(--text-2);font-size:.85rem;font-weight:600;min-height:2.5em}
.kpi .k-value{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  background:linear-gradient(180deg,var(--white),var(--silver));-webkit-background-clip:text;background-clip:text;color:transparent}
.kpi .k-meta{display:flex;gap:8px;align-items:center;font-size:.8rem;color:var(--text-3)}
.delta{font-weight:700;font-variant-numeric:tabular-nums}
.delta.good{color:var(--ok)}.delta.bad{color:var(--err)}.delta.flat{color:var(--text-2)}
.kpi .spark{height:36px;margin-top:4px}

/* ---------- chips / buttons ---------- */
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{padding:6px 12px;border-radius:999px;border:1px solid var(--line-2);font-size:.82rem;font-weight:600;color:var(--text-2);transition:all .2s}
.chip:hover{border-color:var(--gold);color:var(--white)}
.chip[aria-pressed="true"]{background:var(--gold);border-color:var(--gold);color:var(--pal-0)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;font-weight:700;
  background:var(--gold);color:var(--pal-0);transition:background .2s,transform .2s}
.btn:hover{background:var(--gold-2);transform:translateY(-2px)}
.btn.ghost{background:transparent;color:var(--white);border:1px solid var(--line-2)}
.btn.ghost:hover{border-color:var(--gold);background:rgba(217,162,56,.1)}
select,input[type=text],input[type=search]{
  font:inherit;color:var(--white);background:var(--pal-2);border:1px solid var(--line-2);border-radius:10px;padding:8px 10px;max-width:100%}
label.inline{display:inline-flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-2)}

/* ---------- chapter / nav tiles ---------- */
.tile{display:flex;flex-direction:column;gap:8px;min-height:180px;cursor:pointer;transition:transform .2s,border-color .2s}
.tile:hover,.tile:focus-visible{transform:translateY(-4px);border-color:var(--gold)}
.tile .t-no{color:var(--gold);font-weight:800;font-size:.8rem;letter-spacing:.16em}
.tile h3{font-size:1.25rem}
.tile p{color:var(--text-2);font-size:.92rem;flex:1}
.tile .t-stat{font-size:1.6rem;font-weight:800;color:var(--gold-2)}
.tile .go{color:var(--gold-2);font-weight:700;font-size:.9rem}

/* ---------- 3D stage ---------- */
.stage{position:relative;height:clamp(340px,52vw,560px);border-radius:var(--radius);overflow:hidden;
  background:radial-gradient(circle at 50% 30%,rgba(217,162,56,.12),transparent 55%),linear-gradient(180deg,#0b1226,#020613)}
.stage canvas{display:block;width:100%!important;height:100%!important;touch-action:none}
.stage .hint{position:absolute;left:14px;bottom:12px;font-size:.78rem;color:var(--text-3);pointer-events:none}
.stage .legend3d{position:absolute;right:14px;bottom:12px;font-size:.78rem;color:var(--text-2);text-align:right;pointer-events:none}
.stage .fallback{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;color:var(--text-2)}

/* ---------- infographics ---------- */
.big-number{font-size:clamp(2.6rem,7vw,4.6rem);font-weight:900;line-height:1;letter-spacing:-.04em;
  background:linear-gradient(180deg,var(--gold-2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.insights{display:grid;gap:10px;list-style:none}
.insights li{padding:12px 14px;border-left:3px solid var(--gold);background:rgba(255,255,255,.03);border-radius:0 10px 10px 0;color:var(--text-2)}
.insights li b{color:var(--white)}
.pair{cursor:pointer;display:flex;width:100%;text-align:left;justify-content:space-between;gap:12px;align-items:center;padding:10px 12px;border-radius:10px;
  border:1px solid var(--line);margin-bottom:8px;transition:border-color .2s,background .2s}
.pair:hover,.pair:focus-visible{border-color:var(--gold);background:rgba(217,162,56,.06)}
.pair .r{font-weight:800;font-variant-numeric:tabular-nums;min-width:56px;text-align:right}
.r.pos{color:var(--gold-2)}.r.neg{color:var(--silver)}
.pair small{display:block;color:var(--text-3)}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;font-size:.88rem}
th,td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--text-3);font-weight:700;font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;background:rgba(255,255,255,.03);cursor:pointer}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
tbody tr{cursor:pointer;transition:background .15s}
tbody tr:hover{background:rgba(217,162,56,.07)}
.bar-cell{position:relative}
.bar-cell i{position:absolute;left:0;top:20%;bottom:20%;background:rgba(217,162,56,.22);border-radius:3px;z-index:-1}

/* ---------- tooltip & drill panel ---------- */
.tip{position:fixed;z-index:80;pointer-events:none;max-width:280px;padding:9px 12px;border-radius:10px;font-size:.82rem;
  background:rgba(2,6,19,.96);border:1px solid var(--gold);box-shadow:0 10px 30px rgba(0,0,0,.5);opacity:0;transition:opacity .12s}
.tip.show{opacity:1}
.tip b{color:var(--gold-2)}
.drill-back{position:fixed;inset:0;z-index:60;background:rgba(2,6,19,.6);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .2s}
.drill-back.open{opacity:1;pointer-events:auto}
.drill{position:fixed;top:0;right:0;bottom:0;z-index:70;width:min(620px,100%);overflow-y:auto;
  background:linear-gradient(180deg,#0d1530,var(--pal-0));border-left:1px solid var(--gold);
  transform:translateX(102%);transition:transform .28s ease;padding:22px clamp(16px,3vw,28px) 40px}
.drill.open{transform:none}
.drill .close{position:sticky;top:0;float:right;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-2);
  background:rgba(2,6,19,.9);font-size:1.3rem;line-height:1;z-index:2}
.drill .close:hover{border-color:var(--gold)}
.drill h2{font-size:1.5rem;margin:6px 48px 4px 0;letter-spacing:-.02em}
.drill .facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:16px 0}
.drill .fact{padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--line)}
.drill .fact span{display:block;font-size:.74rem;color:var(--text-3);text-transform:uppercase;letter-spacing:.06em}
.drill .fact b{font-size:1.25rem}
.drill h4{margin:22px 0 8px;color:var(--gold-2);font-size:.82rem;text-transform:uppercase;letter-spacing:.12em}
.drill .formula{font-family:Consolas,monospace;font-size:.82rem;color:var(--text-2);background:rgba(255,255,255,.04);padding:10px;border-radius:8px}

/* ---------- misc ---------- */
.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.72rem;font-weight:700;border:1px solid var(--line-2);color:var(--text-2)}
.badge.gold{border-color:var(--gold);color:var(--gold-2)}
.badge.warn{border-color:var(--warn);color:var(--warn)}
.badge.err{border-color:var(--err);color:var(--err)}
.loading{padding:80px 0;text-align:center;color:var(--text-3)}
.loading::before{content:"";display:block;width:42px;height:42px;margin:0 auto 14px;border-radius:50%;border:3px solid var(--line-2);border-top-color:var(--gold);animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.error-box{padding:24px;border:1px solid var(--err);border-radius:12px;color:var(--text-2)}
footer.foot{position:relative;z-index:1;width:min(1320px,100%);margin:0 auto;padding:28px var(--gutter) 40px;color:var(--text-3);font-size:.82rem;border-top:1px solid var(--line)}
footer.foot a{color:var(--text-2)}footer.foot a:hover{color:var(--gold-2)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}.reveal{opacity:1;transform:none}}