/* =====================================================================
   Unifour - shared design system (website + portal tokens)
   Loaded last on every page. Defines colour tokens (light/dark), fonts,
   header/footer, buttons, home/portal/pricing/contact blocks, and remaps
   the older --u-* variables so Knowledge Hub / tool pages follow the theme.
   Fonts: Inter (English) + Noto Sans Devanagari (Nepali).
   ===================================================================== */
:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --text: #14202b;
  --muted: #4a5b6b;
  --line: #dde4ec;
  --brand: #0274b3;
  --brand-d: #015a8c;
  --on-brand: #ffffff;
  --soft: #eaf3fa;
  --ok: #14703d;
  --warn: #8a5a00;
  --shadow: 0 1px 2px rgba(15,35,60,.06), 0 8px 24px rgba(15,35,60,.07);
  --font: "Inter", "Noto Sans Devanagari", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1720; --surface: #17212c; --text: #e6edf3; --muted: #9fb0c0; --line: #2a3745;
    --brand: #4aa8e0; --brand-d: #7bc0ec; --on-brand: #0f1720; --soft: #14283a;
    --ok: #56c987; --warn: #e3b04b; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1720; --surface: #17212c; --text: #e6edf3; --muted: #9fb0c0; --line: #2a3745;
  --brand: #4aa8e0; --brand-d: #7bc0ec; --on-brand: #0f1720; --soft: #14283a;
  --ok: #56c987; --warn: #e3b04b; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  color-scheme: dark;
}

/* ---- remap older Knowledge Hub / tool variables onto the tokens ---- */
:root, :root[data-theme="dark"] {
  --u-blue: var(--brand); --u-blue-d: var(--brand-d); --u-navy: var(--text); --u-ink: var(--text);
  --u-muted: var(--muted); --u-line: var(--line); --u-bg: var(--bg); --u-card: var(--surface);
  --u-soft: var(--soft); --u-green: var(--ok); --u-shadow: var(--shadow);
  --u-head: var(--font); --u-body: var(--font);
}

html { scroll-behavior: smooth; }
body, body.u-page, body.ux { background: var(--bg); color: var(--text); font-family: var(--font); }
html[lang="ne"] body { line-height: 1.7; }
body.ux { margin: 0; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
body.ux *, body.ux *::before, body.ux *::after { box-sizing: border-box; }
body.ux h1, body.ux h2, body.ux h3, body.ux h4 { font-family: var(--font); color: var(--text); line-height: 1.25; margin: 0; }
body.ux a { color: var(--brand); }
body.ux img { max-width: 100%; height: auto; }
body.ux p { margin: 0 0 1em; }
.ux-wrap, .ux-header .ux-wrap { width: min(1180px, 100%); margin: 0 auto; padding: 0 16px; }
.ux-skip { position: absolute; left: -999px; top: 0; background: var(--brand); color: var(--on-brand) !important; padding: 10px 16px; z-index: 2000; border-radius: 0 0 8px 0; }
.ux-skip:focus { left: 0; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }

/* legacy pages: keep article text and cards in the dark theme */
body.u-page .u-card, body.u-page .u-filters button, body.u-page .u-search input { background: var(--surface); color: var(--text); }
body.u-page .u-hero { background: radial-gradient(1200px 300px at 85% -10%, color-mix(in srgb, var(--brand) 16%, transparent), transparent 60%), linear-gradient(180deg, var(--surface) 0%, var(--soft) 100%); }
body.u-page .u-hero .u-lead, body.u-page .u-tile p, body.u-page .u-toc a { color: var(--muted); }
body.u-page .kb-article h2 { color: var(--text) !important; }
body.u-page .kb-article code { color: var(--brand); }
body.u-page .kb-article pre, body.u-page .kb-article pre code { background: #0b1118 !important; color: #e2e8f0; }
body.u-page .kb-article table { display: block; max-width: 100%; overflow-x: auto; }
body.u-page .kb-article, body.u-page .kb-tool { overflow-wrap: anywhere; }
body.u-page .kb-article pre { max-width: 100%; }
body.u-page .kb-article img, body.u-page .kb-article iframe, body.u-page .kb-article video { max-width: 100%; }
body.u-page .kb-article * { max-width: 100%; }
body.u-page .kb-article table * { max-width: none; }
body.u-page .u-chip { color: var(--brand); background: color-mix(in srgb, var(--brand) 12%, transparent); }
body.u-page .u-chip.green { color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, transparent); }
body.u-page .u-tile .u-more, body.u-page a { color: var(--brand); }
body.u-page .u-tile h3 { color: var(--text); }

/* ---------------- header ---------------- */
.ux-header { position: sticky; top: 0; z-index: 1000; background: var(--surface); border-bottom: 1px solid var(--line); font-family: var(--font); }
.ux-header .ux-wrap { display: flex; align-items: center; gap: 18px; min-height: 68px; }
.ux-logo { display: flex; align-items: center; gap: 10px; text-decoration: none !important; color: var(--text) !important; font-weight: 800; font-size: 19px; white-space: nowrap; }
.ux-logo img { height: 40px; width: auto; border-radius: 6px; }
.ux-nav { display: flex; align-items: center; gap: 2px; margin-left: 12px; flex: 1; }
.ux-nav > a, .ux-nav .ux-dd > button { font: inherit; font-weight: 600; font-size: 15px; color: var(--text); background: none; border: 0; padding: 12px 12px; border-radius: 8px; cursor: pointer; text-decoration: none; min-height: 44px; display: inline-flex; align-items: center; gap: 6px; }
.ux-nav > a:hover, .ux-nav .ux-dd > button:hover, .ux-nav a.on, .ux-nav .ux-dd.on > button { color: var(--brand); background: var(--soft); }
.ux-dd { position: relative; }
.ux-dd .ux-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 220px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; }
.ux-dd.open .ux-menu, .ux-dd:hover .ux-menu, .ux-dd:focus-within .ux-menu { display: block; }
.ux-menu a { display: block; padding: 10px 12px; border-radius: 8px; color: var(--text); text-decoration: none; font-size: 15px; font-weight: 500; }
.ux-menu a:hover, .ux-menu a.on { background: var(--soft); color: var(--brand); }
.ux-tools { display: flex; align-items: center; gap: 8px; }
.ux-iconbtn, .ux-lang { min-height: 44px; min-width: 44px; border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 10px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0 10px; text-decoration: none; }
.ux-iconbtn:hover, .ux-lang:hover { border-color: var(--brand); color: var(--brand); }
.ux-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 20px; border-radius: 10px; font: inherit; font-weight: 700; font-size: 15px; text-decoration: none !important; cursor: pointer; border: 2px solid var(--brand); }
body.ux .ux-btn.fill, .ux-btn.fill { background: var(--brand); color: var(--on-brand) !important; }
.ux-btn.fill:hover { background: var(--brand-d); border-color: var(--brand-d); }
body.ux .ux-btn.ghost, .ux-btn.ghost { background: transparent; color: var(--brand) !important; }
.ux-btn.ghost:hover { background: var(--soft); }
.ux-btn.text { border-color: transparent; background: none; color: var(--text) !important; padding: 0 12px; }
.ux-btn.text:hover { color: var(--brand) !important; }
.ux-btn.lg { min-height: 52px; padding: 0 28px; font-size: 16px; }
.ux-burger { display: none; }
.ux-mobile-only { display: none; }
@media (max-width: 1060px) {
  .ux-header .ux-wrap { gap: 10px; }
  .ux-burger { display: inline-flex; margin-left: auto; }
  .ux-header .ux-tools .ux-btn.text, .ux-header .ux-tools .ux-lang, .ux-header .ux-tools .ux-themebtn { display: none; }
  .ux-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--line); box-shadow: var(--shadow); flex-direction: column; align-items: stretch; margin: 0; padding: 8px 16px 16px; max-height: calc(100vh - 68px); overflow-y: auto; }
  .ux-header.open .ux-nav { display: flex; }
  .ux-nav > a, .ux-nav .ux-dd > button { width: 100%; justify-content: space-between; padding: 12px 8px; border-radius: 0; border-bottom: 1px solid var(--line); }
  .ux-dd .ux-menu { position: static; display: block; box-shadow: none; border: 0; padding: 0 0 0 12px; min-width: 0; }
  .ux-mobile-only { display: flex; gap: 8px; padding: 10px 0; flex-wrap: wrap; }
  .ux-mobile-only .ux-btn { flex: 1; }
}
@media (max-width: 420px) { .ux-logo span { display: none; } }

/* ---------------- sections ---------------- */
.ux-sec { padding: 64px 0; }
.ux-sec.alt { background: var(--surface); border-block: 1px solid var(--line); }
.ux-eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--brand); margin-bottom: 10px; }
.ux-h2 { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; margin-bottom: 12px; }
.ux-lede { font-size: 18px; color: var(--muted); max-width: 760px; margin-bottom: 28px; }
.ux-grid { display: grid; gap: 20px; }
.ux-grid.c2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.ux-grid.c3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.ux-grid.c4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 900px) { .ux-grid.c3, .ux-grid.c4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 620px) { .ux-grid.c2, .ux-grid.c3, .ux-grid.c4 { grid-template-columns: minmax(0,1fr); } .ux-sec { padding: 44px 0; } }
.ux-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; min-width: 0; }
.ux-card h3 { font-size: 19px; margin-bottom: 8px; }
.ux-card p { color: var(--muted); margin-bottom: 0; }

/* hero */
.ux-hero { padding: 56px 0 48px; background: radial-gradient(900px 340px at 90% -10%, color-mix(in srgb, var(--brand) 18%, transparent), transparent 65%), var(--bg); }
.ux-hero .ux-wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
@media (max-width: 900px) { .ux-hero .ux-wrap { grid-template-columns: minmax(0,1fr); } }
.ux-hero h1 { font-size: clamp(30px, 4.6vw, 48px); font-weight: 800; letter-spacing: -.01em; margin-bottom: 16px; }
.ux-hero .ux-lede { margin-bottom: 24px; }
.ux-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.ux-tagline { margin-top: 22px; color: var(--muted); font-weight: 600; font-size: 15px; }
.ux-shot { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
.ux-shot .bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--soft); }
.ux-shot .bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); display: block; }
.ux-shot .body { padding: 18px; display: grid; gap: 12px; }
.ux-shot .row { display: flex; justify-content: space-between; gap: 12px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; }
.ux-shot .row b { color: var(--text); } .ux-shot .row span { color: var(--muted); }
.ux-pill { display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--ok); }
.ux-pill.soon { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }

/* tabs */
.ux-tabs { display: inline-flex; background: var(--soft); border-radius: 12px; padding: 4px; margin-bottom: 24px; flex-wrap: wrap; }
.ux-tabs button { border: 0; background: none; font: inherit; font-weight: 700; color: var(--muted); padding: 10px 20px; border-radius: 9px; cursor: pointer; min-height: 44px; }
.ux-tabs button[aria-selected="true"] { background: var(--surface); color: var(--brand); box-shadow: var(--shadow); }
.ux-panel[hidden] { display: none; }
.ux-feat { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.ux-feat li { display: grid; grid-template-columns: 26px 1fr; gap: 10px; }
.ux-feat li::before { content: "✓"; color: var(--ok); font-weight: 800; }
.ux-feat b { color: var(--text); }
.ux-feat span.d { color: var(--muted); }
.ux-feat .ux-pill { margin-left: 6px; vertical-align: 1px; }

/* four Us */
.ux-us .ux-card .lab { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.ux-us .ux-card h3 { font-size: 24px; margin: 6px 0 8px; }
.ux-us .ux-card h3 b { color: var(--brand); font-size: 1.25em; }

/* pricing */
.ux-plan { display: flex; flex-direction: column; gap: 10px; }
.ux-plan.pop { border: 2px solid var(--brand); }
.ux-plan .price { font-size: 30px; font-weight: 800; color: var(--text); }
.ux-plan .price small { font-size: 14px; font-weight: 500; color: var(--muted); }
.ux-plan ul { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 8px; color: var(--muted); font-size: 15px; }
.ux-plan ul li::before { content: "✓ "; color: var(--ok); font-weight: 800; }
.ux-plan .ux-btn { margin-top: auto; }
.ux-tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.ux-tablewrap table { width: 100%; border-collapse: collapse; min-width: 640px; font-size: 15px; }
.ux-tablewrap th, .ux-tablewrap td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.ux-tablewrap th { background: var(--soft); color: var(--text); }
.ux-tablewrap td { color: var(--muted); }

/* doc studio thumbs */
.ux-doc { aspect-ratio: 3 / 4; background: #fff; color: #14202b; border: 1px solid var(--line); border-radius: 10px; padding: 16px 14px; font-size: 11px; line-height: 1.5; box-shadow: var(--shadow); overflow: hidden; }
.ux-doc b { display: block; text-align: center; font-size: 12px; margin-bottom: 8px; }
.ux-doc i { display: block; height: 6px; background: #d6dde5; border-radius: 3px; margin: 7px 0; }
.ux-doc i.s { width: 70%; }
.ux-doccap { text-align: center; margin-top: 8px; font-weight: 600; font-size: 14px; }

/* forms */
.ux-form { display: grid; gap: 16px; }
.ux-form label { display: grid; gap: 6px; font-weight: 600; font-size: 14px; }
.ux-form input, .ux-form select, .ux-form textarea { font: inherit; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--text); min-height: 44px; width: 100%; }
.ux-form textarea { min-height: 130px; resize: vertical; }
.ux-form .hp { position: absolute; left: -9999px; }
.ux-msg { padding: 14px 16px; border-radius: 10px; font-weight: 600; display: none; }
.ux-msg.ok { display: block; background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--ok); }
.ux-msg.err { display: block; background: color-mix(in srgb, #c0392b 14%, transparent); color: #c0392b; }
:root[data-theme="dark"] .ux-msg.err { color: #ff8f84; }

/* page head (inner) */
.ux-pagehead { padding: 48px 0 28px; background: linear-gradient(180deg, var(--surface), var(--bg)); border-bottom: 1px solid var(--line); }
.ux-pagehead h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; margin-bottom: 10px; }
.ux-pagehead p { color: var(--muted); font-size: 18px; max-width: 780px; margin: 0; }
.ux-crumbs { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.ux-crumbs a { color: var(--muted) !important; text-decoration: none; }
.ux-list { display: grid; gap: 10px; padding-left: 1.2em; margin: 0 0 1em; color: var(--muted); }
.ux-list b { color: var(--text); }
.ux-note { border-left: 4px solid var(--brand); background: var(--soft); padding: 14px 18px; border-radius: 0 12px 12px 0; color: var(--text); }

/* footer */
.ux-footer { background: var(--surface); border-top: 1px solid var(--line); padding: 44px 0 20px; font-family: var(--font); color: var(--muted); }
.ux-footer .ux-wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
@media (max-width: 800px) { .ux-footer .ux-wrap { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 480px) { .ux-footer .ux-wrap { grid-template-columns: minmax(0,1fr); } }
.ux-footer h4 { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; color: var(--text); margin: 0 0 12px; font-family: var(--font); }
.ux-footer a { display: block; color: var(--muted); text-decoration: none; padding: 6px 0; min-height: 32px; }
.ux-footer a:hover { color: var(--brand); }
.ux-footer .copy { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 18px; font-size: 14px; }

/* ---- guides: wide helper layouts must never force sideways page scroll ---- */
body.u-page .kb-article nav[aria-label="Tabs"] { overflow-x: auto; max-width: 100%; -webkit-overflow-scrolling: touch; }
body.u-page .kb-article .min-w-max { min-width: 0 !important; flex-wrap: wrap; justify-content: center; }
body.u-page .kb-article .whitespace-nowrap { white-space: normal; }
body.u-page .kb-article nav[aria-label="Tabs"] .whitespace-nowrap { white-space: nowrap; }

/* logo size must beat the generic `body.ux img` rule */
.ux-header .ux-logo img, .ux-footer .ux-logo img { height: 40px; width: 40px; max-width: none; object-fit: contain; }

/* Dark mode: legacy guide pages hard-code light backgrounds (Tailwind-style classes, Bootstrap tables, inline TOC box). */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .kb-article .bg-white, :root:not([data-theme="light"]) .kb-article .table-of-contents,
  :root:not([data-theme="light"]) .kb-article .table { background: var(--surface) !important; color: var(--text) !important; }
  :root:not([data-theme="light"]) .kb-article [class*="bg-green-50"], :root:not([data-theme="light"]) .kb-article [class*="bg-yellow-50"] { background: var(--soft) !important; color: var(--text) !important; }
  :root:not([data-theme="light"]) .kb-article .table td, :root:not([data-theme="light"]) .kb-article .table th { border-color: var(--line); }
}
:root[data-theme="dark"] .kb-article .bg-white, :root[data-theme="dark"] .kb-article .table-of-contents,
:root[data-theme="dark"] .kb-article .table { background: var(--surface) !important; color: var(--text) !important; }
:root[data-theme="dark"] .kb-article [class*="bg-green-50"], :root[data-theme="dark"] .kb-article [class*="bg-yellow-50"] { background: var(--soft) !important; color: var(--text) !important; }
:root[data-theme="dark"] .kb-article .table td, :root[data-theme="dark"] .kb-article .table th { border-color: var(--line); }
:root[data-theme="dark"] .kb-article [class*="text-gray-"], :root[data-theme="dark"] .kb-article [class*="text-slate-"],
:root[data-theme="dark"] .kb-article [class*="text-green-"], :root[data-theme="dark"] .kb-article [class*="text-yellow-"],
:root[data-theme="dark"] .kb-article [class*="text-black"] { color: var(--text) !important; }
:root[data-theme="dark"] .kb-article [class*="text-blue-"], :root[data-theme="dark"] .kb-article [class*="text-indigo-"] { color: var(--brand) !important; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .kb-article [class*="text-gray-"], :root:not([data-theme="light"]) .kb-article [class*="text-slate-"],
  :root:not([data-theme="light"]) .kb-article [class*="text-green-"], :root:not([data-theme="light"]) .kb-article [class*="text-yellow-"],
  :root:not([data-theme="light"]) .kb-article [class*="text-black"] { color: var(--text) !important; }
  :root:not([data-theme="light"]) .kb-article [class*="text-blue-"], :root:not([data-theme="light"]) .kb-article [class*="text-indigo-"] { color: var(--brand) !important; }
}
:root[data-theme="dark"] .kb-article [class*="bg-gray-"], :root[data-theme="dark"] .kb-article [class*="bg-blue-"], :root[data-theme="dark"] .kb-article [class*="bg-slate-"] { background: var(--soft) !important; }
:root[data-theme="dark"] .kb-article [class*="text-brand-gray"] { color: var(--text) !important; }
:root[data-theme="dark"] .kb-article [class*="text-brand-blue"], :root[data-theme="dark"] .kb-article [class*="text-brand-"] { color: var(--brand) !important; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .kb-article [class*="bg-gray-"], :root:not([data-theme="light"]) .kb-article [class*="bg-blue-"], :root:not([data-theme="light"]) .kb-article [class*="bg-slate-"] { background: var(--soft) !important; }
  :root:not([data-theme="light"]) .kb-article [class*="text-brand-gray"] { color: var(--text) !important; }
  :root:not([data-theme="light"]) .kb-article [class*="text-brand-blue"] { color: var(--brand) !important; }
}
:root[data-theme="dark"] .kb-article [class*="bg-brand-"] { background: var(--soft) !important; }
:root[data-theme="dark"] .kb-article [class*="text-red-"], :root[data-theme="dark"] .kb-article [class*="text-orange-"] { color: #ff8f84 !important; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .kb-article [class*="bg-brand-"] { background: var(--soft) !important; }
  :root:not([data-theme="light"]) .kb-article [class*="text-red-"], :root:not([data-theme="light"]) .kb-article [class*="text-orange-"] { color: #ff8f84 !important; }
}