/* India Acronyms — shared page styles. Tokens follow the PAN/Aadhaar guides (aadhaar.css). */
:root{
  --ink:#17202b; --muted:#566170; --line:#dde2e8; --panel:#f4f6f8; --bg:#ffffff;
  --you:#1f56c2; --you-soft:#e7eefc; --green:#1d7a52; --green-soft:#e6f4ec;
  --amber:#b26a00; --amber-soft:#fdf3e1; --red:#b42318; --red-soft:#fdecea;
  --focus:#ffdd00; --radius:10px; --measure:68ch;
  --serif:"Noto Serif",Georgia,serif; --sans:"Noto Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--sans)}
a{color:var(--you);text-underline-offset:.18em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
img,svg,canvas{max-width:100%}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--focus);color:#000;padding:8px 12px;z-index:100}
.skip:focus{left:8px}

/* Language bar (black, top of every page) */
.langbar{background:#000;color:#fff;font-size:14px}
.langbar ul{list-style:none;margin:0 auto;padding:6px 16px;max-width:1280px;display:flex;gap:4px 14px;flex-wrap:wrap;align-items:center}
.langbar li{white-space:nowrap}
.langbar .lb-label{color:#b9c0c8;margin-right:2px}
.langbar a{color:#fff;text-decoration:none;padding:2px 4px;border-radius:4px}
.langbar a:hover{text-decoration:underline}
.langbar [aria-current="page"]{background:#fff;color:#000;font-weight:600;padding:2px 8px}

/* Site header: logo top-left, share links */
.sitehead{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}
.sitehead .in{max-width:1280px;margin:0 auto;padding:8px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 18px/1.2 var(--serif)}
.brand svg{flex:none}
.brand small{display:block;font:500 12px/1.2 var(--sans);color:var(--muted)}
.share{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.share .lbl{font-size:13px;color:var(--muted);margin-right:2px}
.share a,.share button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;padding:0}
.share a:hover,.share button:hover{background:var(--panel)}
.share svg{width:17px;height:17px;fill:currentColor}
.share .copied{position:absolute;margin-top:56px;background:var(--ink);color:#fff;font-size:12px;padding:3px 8px;border-radius:6px}
@media (max-width:640px){
  .share{flex-wrap:nowrap;gap:4px}
  .share .lbl,.share .opt{display:none}
  .share a,.share button{width:32px;height:32px}
  .brand{font-size:16px;white-space:nowrap}.brand small{display:none}
}
@media (max-width:380px){.share [data-share=facebook]{display:none}}

/* Layout: article + left TOC sidebar on wide screens */
.layout{max-width:1280px;margin:0 auto;padding:0 16px;display:block}
.toc-side{display:none}
@media (min-width:1100px){
  .layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px}
  .toc-side{display:block;position:sticky;top:72px;align-self:start;max-height:calc(100vh - 88px);overflow:auto;padding:24px 0}
}
.article{max-width:calc(var(--measure) + 32px);margin:0 auto;padding:16px 0 40px}
@media (min-width:1100px){.article{margin:0;max-width:860px}}
.crumbs{font-size:14px;color:var(--muted);margin:8px 0 4px}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:4px}
.crumbs li+li::before{content:"›";margin-right:4px;color:#9aa3ad}
h1{font:700 clamp(28px,4.6vw,40px)/1.18 var(--serif);margin:12px 0 10px;letter-spacing:-.01em}
h2{font:700 clamp(22px,3vw,27px)/1.25 var(--serif);margin:44px 0 12px;padding-top:4px}
h3{font:700 19px/1.35 var(--sans);margin:28px 0 8px}
p,ul,ol{margin:0 0 14px}
li{margin:4px 0}
.byline{font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:4px 16px;margin:0 0 18px;padding:0 0 14px;border-bottom:1px solid var(--line)}
.byline b{color:var(--ink);font-weight:600}
.indep{font-size:13px;color:var(--muted);background:var(--panel);border-radius:8px;padding:6px 10px;margin:0 0 16px}

/* Answer box, facts */
.answer{background:var(--you-soft);border-left:5px solid var(--you);border-radius:var(--radius);padding:16px 18px;margin:0 0 18px;font-size:18px}
.answer strong{font-weight:700}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin:0 0 18px;padding:0}
.facts div{border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;background:#fff}
.facts dt{font-size:13px;color:var(--muted);margin:0}
.facts dd{margin:2px 0 0;font-weight:600;font-size:16px}
.takeaways{border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px 4px 16px;margin:0 0 18px}
.takeaways h2{font:700 16px/1.3 var(--sans);margin:2px 0 6px;padding:0;text-transform:none}

/* Glossary terms (dotted underline, hover card) */
.term{text-decoration:underline dotted;text-decoration-thickness:1.5px;text-underline-offset:.24em;cursor:help;border-radius:3px}
.js .term:hover,.term[aria-expanded="true"]{background:var(--you-soft);text-decoration-color:var(--you)}
a.term{color:inherit}
.tipcard{position:absolute;z-index:60;width:min(340px,calc(100vw - 24px));background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 40px rgba(16,24,40,.18);padding:14px 16px 12px;font-size:15px;line-height:1.5;opacity:0;transform:translateY(6px) scale(.97);transition:opacity .16s ease,transform .16s ease;pointer-events:none}
.tipcard.on{opacity:1;transform:none;pointer-events:auto}
.tipcard h3{margin:0 28px 2px 0;font:700 16px/1.3 var(--sans)}
.tipcard .full{color:var(--muted);font-size:13px;margin:0 0 6px}
.tipcard p{margin:0 0 6px}
.tipcard .go{font-size:14px;font-weight:600}
.tipcard .x{position:absolute;right:8px;top:6px;border:0;background:none;font-size:22px;line-height:1;cursor:pointer;color:var(--muted);padding:2px 6px}
@media (max-width:560px){.tipcard{position:fixed;left:8px!important;right:8px;bottom:8px;top:auto!important;width:auto;border-radius:14px}}

/* Figures and animations */
.fig{border:1px solid var(--line);border-radius:14px;background:#fbfcfd;padding:12px;margin:8px 0 18px}
.fig canvas{display:block;width:100%;height:auto;border-radius:10px;background:#fff}
.fig figcaption{font-size:14px;color:var(--muted);margin-top:8px}
.ctrls{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;align-items:center}
.btn{font:600 15px/1 var(--sans);border:1px solid var(--you);background:var(--you);color:#fff;border-radius:8px;padding:9px 14px;cursor:pointer}
.btn.ghost{background:#fff;color:var(--you)}
.btn:disabled{opacity:.45;cursor:default}
.stepinfo{font-size:15px;margin:10px 0 0;min-height:3.2em}
.stepinfo b{color:var(--you)}

/* Tabs */
.tabs{margin:8px 0 18px}
.tablist{display:flex;gap:4px;border-bottom:2px solid var(--line);overflow-x:auto;scrollbar-width:thin}
.tablist [role=tab]{font:600 15px/1.2 var(--sans);border:0;background:none;padding:10px 14px;cursor:pointer;color:var(--muted);border-bottom:3px solid transparent;margin-bottom:-2px;white-space:nowrap}
.tablist [role=tab][aria-selected=true]{color:var(--you);border-bottom-color:var(--you)}
.tabpanel{padding:14px 2px 0}
.tabpanel[hidden]{display:none}
.nojs-tabs .tablist{display:none}
.nojs-tabs .tabpanel[hidden]{display:block}

/* Full-width acronym banner: giant letters, each part labelled with its word */
.hero{background:#0f1720;color:#fff}
.hero .in{max-width:1280px;margin:0 auto;padding:22px 16px 18px}
.hero svg{display:block;width:100%;height:auto}
.hero text{font-family:var(--serif);font-weight:700}
.hero .parts{display:grid;gap:8px;margin-top:6px}
.hero .parts div{border-top:3px solid currentColor;padding-top:6px;font:700 clamp(14px,2.2vw,24px)/1.2 var(--sans)}
.hero .parts small{display:block;font:400 clamp(11px,1.3vw,15px)/1.3 var(--sans);color:#b9c3cf;margin-top:2px}
.hero .c1{color:#8fb4ff}.hero .c2{color:#6fd3a4}.hero .c3{color:#ffc46b}.hero .c4{color:#f59ab8}
/* The banner is visible by default; it animates only when the page is in view (see acr.js), and
   .hero-done removes any half-finished state so a paused background tab never shows a blank banner. */
.hero-go .hero svg{animation:heroWipe 1s ease-out both}
.hero-go .hero .parts div{animation:heroUp .5s ease-out both}
.hero-go .hero .parts div:nth-child(1){animation-delay:.7s}
.hero-go .hero .parts div:nth-child(2){animation-delay:.9s}
.hero-go .hero .parts div:nth-child(3){animation-delay:1.1s}
.hero-go .hero .parts div:nth-child(4){animation-delay:1.3s}
.hero-done .hero svg,.hero-done .hero .parts div{animation:none!important;clip-path:none;opacity:1;transform:none}
@keyframes heroWipe{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
@keyframes heroUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* History timeline */
.timeline{list-style:none;margin:8px 0 18px;padding:0 0 0 22px;position:relative}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--line)}
.timeline li{position:relative;margin:0 0 14px}
.timeline li::before{content:"";position:absolute;left:-22px;top:6px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--you)}
.timeline li:last-child::before{background:var(--you)}
.timeline time{font-weight:700;color:var(--you);font-size:15px}
.timeline p{margin:2px 0 0}
.js .timeline li{opacity:0;transform:translateX(-8px);transition:opacity .4s ease,transform .4s ease}
.js .timeline li.seen{opacity:1;transform:none}

/* Reference number reader */
code{font:15px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--panel);padding:1px 6px;border-radius:5px}
.rrn{border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;margin:8px 0 12px;background:#fbfcfd}
.rrn label{font-weight:700;display:block;margin-bottom:6px}
.rrn .row{display:flex;gap:8px;flex-wrap:wrap}
.rrn input{flex:1 1 200px;font:17px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;padding:9px 10px;border:1px solid #b8c0ca;border-radius:8px;letter-spacing:.04em}
.rrn .formmsg{margin-top:8px}

/* Uses grid */
.uses{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin:8px 0 18px}
.use{border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;background:#fff}
.use h3{margin:0 0 4px;font-size:17px;display:flex;gap:8px;align-items:center}
.use h3 span{font-size:22px}
.use p{margin:0 0 6px;font-size:15.5px}
.use .eg{font-size:14.5px;color:var(--muted);margin:0}
.use .eg b{color:var(--ink)}

/* Tables */
.tablewrap{overflow-x:auto;margin:8px 0 18px;border:1px solid var(--line);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:560px}
th,td{padding:9px 12px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
thead th{background:var(--panel);font-weight:700}
tbody tr:last-child td{border-bottom:0}
th[scope=row]{font-weight:600;background:#fbfcfd}
.hl{background:var(--you-soft)}

/* Callouts */
.note,.warn,.ok{border-radius:var(--radius);padding:12px 16px;margin:8px 0 18px}
.note{background:var(--panel)}
.warn{background:var(--amber-soft);border-left:5px solid var(--amber)}
.ok{background:var(--green-soft);border-left:5px solid var(--green)}
.warn p:last-child,.ok p:last-child,.note p:last-child{margin-bottom:0}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:var(--radius);margin:0 0 8px;background:#fff}
.faq summary{cursor:pointer;padding:12px 16px;font-weight:600;list-style:none;position:relative;padding-right:40px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:16px;top:9px;font-size:22px;color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq details>div{padding:0 16px 12px}

/* Related terms block */
.related ol{list-style:none;padding:0;margin:8px 0 18px;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px;counter-reset:rel}
.related li{margin:0;border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;background:#fff;position:relative}
.related li:first-child{border-color:var(--you);background:var(--you-soft)}
.related a{font-weight:700;text-decoration:none}
.related a:hover{text-decoration:underline}
.related span{display:block;font-size:14px;color:var(--muted)}
.related .why{font-size:13.5px;color:var(--ink);margin-top:2px}

/* Sources */
.sources ol{font-size:15px;padding-left:22px}
.sources li{margin:6px 0}
.sources .acc{color:var(--muted);font-size:13.5px}

/* TOC */
.toc-title{font:700 14px/1.2 var(--sans);text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 8px}
.toc ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.toc li{margin:0}
.toc a{display:block;padding:5px 10px 5px 12px;margin-left:-2px;border-left:2px solid transparent;text-decoration:none;color:var(--ink);font-size:15px;line-height:1.35}
.toc a:hover{color:var(--you)}
.toc a.active{border-left-color:var(--you);color:var(--you);font-weight:600}
.toc-inline{border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;margin:0 0 18px;background:#fbfcfd}
@media (min-width:1100px){.toc-inline{display:none}}
.fab{position:fixed;right:16px;bottom:16px;z-index:40;border:0;border-radius:999px;background:var(--ink);color:#fff;font:600 15px/1 var(--sans);padding:12px 18px;box-shadow:0 8px 24px rgba(0,0,0,.25);cursor:pointer;opacity:0;transform:translateY(20px);transition:opacity .3s,transform .3s;pointer-events:none}
.fab.on{opacity:1;transform:none;pointer-events:auto}
@media (min-width:1100px){.fab{display:none}}
dialog.tocdlg{border:0;border-radius:16px;padding:16px 18px;width:min(420px,calc(100vw - 24px));max-height:80vh}
dialog.tocdlg::backdrop{background:rgba(10,15,25,.45)}
dialog.tocdlg .x{float:right;border:0;background:none;font-size:24px;cursor:pointer}

/* Report / subscribe / footer */
.help{border-top:1px solid var(--line);margin-top:36px;padding-top:18px}
.help .row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
form.stack{display:grid;gap:10px;margin-top:12px;max-width:560px}
form.stack label{font-weight:600;font-size:15px;display:grid;gap:4px}
form.stack input,form.stack textarea,form.stack select{font:16px/1.4 var(--sans);padding:9px 10px;border:1px solid #b8c0ca;border-radius:8px;width:100%}
form.stack textarea{min-height:110px}
.hp{position:absolute;left:-5000px}
.formmsg{font-size:15px;min-height:1.4em;margin:0}
.formmsg.good{color:var(--green)}
.formmsg.bad{color:var(--red)}
.subscribe{background:var(--panel);border-radius:14px;padding:16px 18px;margin:28px 0 0}
.subscribe h2{margin:0 0 6px;font-size:20px}
.subscribe form{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.subscribe input[type=email]{flex:1 1 220px;font:16px/1.4 var(--sans);padding:9px 10px;border:1px solid #b8c0ca;border-radius:8px}
.sitefoot{background:#0f1720;color:#d6dbe1;margin-top:40px;font-size:14px}
.sitefoot .in{max-width:1280px;margin:0 auto;padding:18px 16px;display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;justify-content:space-between}
.sitefoot a{color:#fff}
.sitefoot nav{display:flex;flex-wrap:wrap;gap:6px 16px}
.ad-slot{margin:22px 0;min-height:0}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{.langbar,.sitehead .share,.toc-side,.fab,.help,.subscribe,.ctrls{display:none!important}}

/* Security question (Report and Contact forms) */
.captcha{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
form.stack .captcha label{flex-basis:100%;display:block}
form.stack .captcha input{width:5.5em}
.contact-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
form.stack label span{font-weight:400;color:var(--muted,#5b6470)}