/* UPDigital — core theme */
:root{
  --bg:#070b14; --bg2:#0d1424; --panel:#111a2e; --line:#1e2a44;
  --ink:#e9eefc; --muted:#9fb0d0; --brand:#ff7a18; --brand2:#ffa04d; --accent:#3aa0ff;
  --ok:#2fbf71; --warn:#ffb020; --radius:14px; --wrap:1160px;
  --sans:"Segoe UI",system-ui,-apple-system,Roboto,"Noto Sans Devanagari",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 var(--sans);-webkit-text-size-adjust:100%}
img{max-width:100%;height:auto}
a{color:var(--brand2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(1.7rem,4.2vw,2.6rem)}
h2{font-size:clamp(1.3rem,2.6vw,1.75rem);margin-top:1.6em}
h3{font-size:1.08rem}
p{margin:0 0 1em}
.wrap{width:min(var(--wrap),100% - 2rem);margin-inline:auto}
.narrow{max-width:820px}
.section{padding:2.6rem 0}
.muted{color:var(--muted)}
.small{font-size:.88rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:1rem;z-index:99;background:var(--brand);color:#0b0f18;padding:.6rem 1rem;border-radius:8px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,11,20,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:1rem;padding:.65rem 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.55rem;color:var(--ink);font-weight:800;text-decoration:none}
.brand img{border-radius:8px}
.brand-dot{color:var(--brand)}
.nav-toggle{margin-left:auto;background:transparent;border:1px solid var(--line);color:var(--ink);font-size:1.15rem;border-radius:10px;padding:.35rem .6rem;cursor:pointer}
.primary-nav{display:none;width:100%}
.primary-nav.open{display:block}
.primary-nav ul{list-style:none;margin:.6rem 0 0;padding:0;display:flex;flex-direction:column;gap:.15rem}
.primary-nav a{display:block;padding:.55rem .2rem;color:var(--ink);font-weight:600}
.primary-nav a[aria-current]{color:var(--brand)}
.nav-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin:.6rem 0}
.nav-search{display:flex;gap:.35rem;flex:1 1 220px}
.nav-search input,.hero-search input{flex:1;min-width:0;background:var(--bg2);border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:.55rem .8rem}
.nav-search button,.hero-search button,.lang-toggle{background:var(--brand);color:#160c02;border:0;font-weight:700;border-radius:10px;padding:.55rem .9rem;cursor:pointer}
.lang-toggle{background:transparent;border:1px solid var(--line);color:var(--ink)}
@media(min-width:960px){
  .nav-toggle{display:none}
  .primary-nav{display:flex!important;align-items:center;gap:1rem;width:auto;margin-left:auto}
  .primary-nav ul{flex-direction:row;margin:0;gap:.2rem}
  .primary-nav a{padding:.45rem .7rem;border-radius:9px}
  .nav-actions{margin:0}
  .nav-search{flex:0 0 210px}
}

/* Breadcrumbs */
.breadcrumbs{padding:.75rem 0 0}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;padding:0;margin:0;font-size:.85rem;color:var(--muted)}
.breadcrumbs li+li::before{content:"/";margin-right:.35rem;color:var(--line)}

/* Hero */
.hero{background:radial-gradient(1000px 400px at 15% -10%,rgba(255,122,24,.22),transparent 60%),radial-gradient(800px 380px at 90% 0,rgba(58,160,255,.18),transparent 60%),var(--bg2);border-bottom:1px solid var(--line)}
.hero-inner{padding:2.8rem 0 2.4rem}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.75rem;color:var(--brand);font-weight:800;margin:0 0 .6rem}
.tagline{font-weight:700;color:var(--brand2);margin:-.2rem 0 .7rem}
.lede{color:var(--muted);font-size:1.05rem;max-width:70ch}
.hero-search{display:flex;gap:.5rem;margin:1.2rem 0 .8rem;max-width:640px}
.chips{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;font-size:.85rem}
.chips-label{color:var(--muted)}
.chip{border:1px solid var(--line);background:var(--panel);padding:.3rem .7rem;border-radius:999px;color:var(--ink)}
.hero-cta{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.3rem}
.btn{display:inline-block;background:var(--brand);color:#160c02;font-weight:700;padding:.7rem 1.1rem;border-radius:11px;border:0;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--brand2);text-decoration:none}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}

/* Sections & cards */
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.more{font-weight:700;font-size:.9rem}
.grid{display:grid;gap:1rem}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:640px){.grid-2,.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(min-width:980px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem}
.card{display:block;color:var(--ink);text-decoration:none;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--brand);transform:translateY(-2px);text-decoration:none}
.card p{color:var(--muted);margin:.35rem 0 .6rem;font-size:.94rem}
.card-h{font-size:1.05rem;margin:.3rem 0}
.card-meta{font-size:.78rem;color:var(--muted)}
.tag{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--brand);border:1px solid var(--line);border-radius:999px;padding:.1rem .55rem}
.notice{background:rgba(58,160,255,.09);border:1px solid rgba(58,160,255,.35);border-radius:12px;padding:.85rem 1rem;color:var(--ink);font-size:.93rem}
.notice.ok{background:rgba(47,191,113,.1);border-color:rgba(47,191,113,.4)}
.notice.warn{background:rgba(255,176,32,.1);border-color:rgba(255,176,32,.4)}
.link-list,.portal-list{list-style:none;padding:0;margin:.5rem 0;display:grid;gap:.45rem}
@media(min-width:700px){.link-list,.portal-list{grid-template-columns:repeat(2,1fr)}}
.link-list li,.portal-list li{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:.6rem .8rem;font-size:.94rem}

/* Guide article */
.guide{max-width:860px}
.guide-head{border-bottom:1px solid var(--line);padding-bottom:1rem;margin-bottom:1.2rem}
.byline{display:flex;flex-wrap:wrap;gap:.4rem 1rem;font-size:.83rem;color:var(--muted)}
.answer{background:linear-gradient(180deg,rgba(255,122,24,.12),transparent);border-left:4px solid var(--brand);border-radius:0 12px 12px 0;padding:.9rem 1rem;font-size:1.03rem}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:.9rem 1.1rem;margin:1.4rem 0}
.toc h2{margin:0 0 .4rem;font-size:1rem}
.toc ol{margin:0;padding-left:1.1rem;columns:2;column-gap:1.4rem;font-size:.92rem}
@media(max-width:560px){.toc ol{columns:1}}
.guide ul,.guide ol{padding-left:1.2rem}
.guide li{margin:.35rem 0}
.checklist{list-style:none;padding:0}
.checklist li{position:relative;padding-left:1.6rem}
.checklist li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
.warn-list li::marker{color:var(--warn)}
.steps li{padding-left:.2rem}
.table{width:100%;border-collapse:collapse;margin:.6rem 0;font-size:.95rem}
.table th,.table td{border:1px solid var(--line);padding:.6rem .75rem;text-align:left;vertical-align:top}
.table th{background:var(--panel);width:36%}
.portal-cta{display:flex;flex-wrap:wrap;gap:.5rem}
.faq{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:.75rem 1rem;margin:.5rem 0}
.faq summary{cursor:pointer;font-weight:700}
.faq p{margin:.6rem 0 0;color:var(--muted)}
.related{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:1rem;margin:1.6rem 0}
.disclaimer{font-size:.86rem;color:var(--muted);border-top:1px solid var(--line);padding-top:1rem}
.prose h2{border-bottom:1px solid var(--line);padding-bottom:.3rem}

/* Search results */
.result-list{list-style:none;padding:0;display:grid;gap:.8rem}
.result-list li{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:.9rem 1rem}
.result-list a{font-weight:700;font-size:1.05rem}
.result-list p{color:var(--muted);margin:.3rem 0 0;font-size:.92rem}

/* Forms */
.form{max-width:620px}
.form label{display:block;font-weight:600;margin-bottom:.3rem;font-size:.92rem}
.form input,.form textarea,.form select{width:100%;background:var(--bg2);border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:.6rem .8rem;font:inherit}
.hp{position:absolute;left:-9999px}

/* Footer */
.site-footer{background:var(--bg2);border-top:1px solid var(--line);margin-top:2rem;padding:2rem 0 1.4rem}
.footer-grid{display:grid;gap:1.4rem}
@media(min-width:800px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
.footer-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:.35rem;font-size:.93rem}
.foot-h{font-size:.95rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:.5rem}
.footer-note{border-top:1px solid var(--line);margin-top:1.4rem;padding-top:1rem;font-size:.85rem;color:var(--muted)}

/* --- Phase 2: tools & calculators --- */
.tool{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;margin:1.4rem 0}
.tool-h{margin:0 0 .9rem;font-size:1.1rem}
.tool-form .field{margin:0 0 .85rem}
.tool-form label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.3rem}
.tool-form input,.tool-form select,.tool-form textarea{width:100%;background:var(--bg2);border:1px solid var(--line);color:var(--ink);border-radius:10px;padding:.6rem .8rem;font:inherit}
.tool-form input:focus,.tool-form select:focus,.tool-form textarea:focus{outline:2px solid var(--brand);outline-offset:1px}
.tool-form textarea{min-height:96px;resize:vertical}
.tool-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin:.4rem 0 0}
.tool-out{margin-top:1rem}
.tool-empty{color:var(--muted);font-size:.92rem;margin:0}
.result-table tr.hi th,.result-table tr.hi td{background:rgba(255,153,0,.10);font-size:1.05rem;font-weight:800}
.tool-pre{white-space:pre-wrap;word-wrap:break-word;background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:1rem;font:400 .93rem/1.6 ui-monospace,Menlo,Consolas,monospace;max-height:520px;overflow:auto}
.formula{background:var(--bg2);border-left:3px solid var(--brand);border-radius:0 10px 10px 0;padding:.75rem 1rem;font-size:.95rem}
@media (min-width:720px){.tool-form{display:grid;grid-template-columns:1fr 1fr;gap:0 1rem}
 .tool-form .field:has(textarea),.tool-actions{grid-column:1/-1}}
@media print{.site-header,.site-footer,.tool-form,.toc,.related,.byline,.skip{display:none!important}
 .tool-pre{border:0;max-height:none;background:#fff;color:#000}
 body{background:#fff;color:#000}}