/* ============================================================
   Ooba public pages — "Deep Artesian"
   Shared by /privacy and /support in en / fa / ps.

   Deliberately self-contained: no webfonts, no CDN, no analytics,
   no cookies. The landing page pulls Inter from Google Fonts, which
   would send every reader's IP address to Google — not acceptable on
   a privacy policy. System fonts render Dari and Pashto correctly.

   Palette is the canonical "Deep Artesian" system from
   docs/DESIGN_SYSTEM.md, not the landing page's cyan.
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#F5FAFD; --surface:#FFFFFF; --surface-2:#E8F2F9;
  --primary:#0B5CAB; --accent:#17B6D9;
  --ink:#0A2540; --muted:#5B7A99; --line:#D3E3EF;
  --success:#12A594; --warning:#E8A33D; --error:#E5484D;
  --shadow-card:0 2px 12px rgba(10,37,64,.07);
  --r-sm:10px; --r-md:14px; --r-card:20px; --r-xl:24px;
  --maxw:1140px; --measure:74ch;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --arabic:"Segoe UI","Noto Naskh Arabic","Noto Sans Arabic","Iranian Sans",Tahoma,Arial,sans-serif;
}

@media (prefers-color-scheme:dark){
  :root{
    --bg:#071A2F; --surface:#0E2A47; --surface-2:#12355A;
    --primary:#3DA5E8; --accent:#2FD0EF;
    --ink:#E6F1FA; --muted:#8FB0CC; --line:#1E4165;
    --success:#25C9A8; --warning:#F0B458; --error:#FF6169;
    --shadow-card:0 2px 12px rgba(0,0,0,.35);
  }
}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}

body{
  font-family:var(--sans);
  background:var(--bg); color:var(--ink);
  font-size:1rem; line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
html[dir="rtl"] body{font-family:var(--arabic);line-height:1.95;font-size:1.05rem}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:20px}

/* ---------- top bar ---------- */
.bar{position:sticky;top:0;z-index:50;background:var(--bg);
  border-bottom:1px solid var(--line)}
@supports (backdrop-filter:blur(12px)){
  .bar{background:color-mix(in srgb,var(--bg) 86%,transparent);
    backdrop-filter:saturate(180%) blur(12px)}
}
.bar-in{display:flex;align-items:center;gap:14px;height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.02em;
  font-size:1.05rem;color:var(--ink);text-decoration:none}
html[dir="rtl"] .brand{letter-spacing:0}
.brand svg{width:20px;height:25px;flex:none;color:var(--primary)}
.bar-nav{margin-inline-start:auto;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.bar-nav > a{font-size:.875rem;font-weight:600;color:var(--muted);text-decoration:none}
.bar-nav > a:hover,.bar-nav > a[aria-current="page"]{color:var(--primary)}

.langs{display:flex;gap:2px;background:var(--surface-2);border-radius:999px;padding:3px}
.langs a{font-size:.8125rem;font-weight:600;color:var(--muted);text-decoration:none;
  padding:5px 12px;border-radius:999px;line-height:1.3;white-space:nowrap}
.langs a[aria-current="page"]{background:var(--surface);color:var(--primary);
  box-shadow:var(--shadow-card)}

/* ---------- hero: the one signature ---------- */
.hero{background:linear-gradient(180deg,var(--accent) 0%,var(--primary) 100%);color:#fff}
@media (prefers-color-scheme:dark){
  .hero{background:linear-gradient(180deg,rgba(47,208,239,.8) 0%,rgba(61,165,232,.7) 100%)}
}
.hero-in{padding:52px 0 56px;max-width:var(--measure)}
.eyebrow{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;opacity:.85;margin-bottom:14px}
html[dir="rtl"] .eyebrow{letter-spacing:0;text-transform:none}
.hero h1{font-size:clamp(1.95rem,1.2rem + 2.6vw,2.6rem);font-weight:700;
  letter-spacing:-.025em;line-height:1.15;margin-bottom:14px}
html[dir="rtl"] .hero h1{letter-spacing:0;line-height:1.45}
.hero p{font-size:1.0625rem;opacity:.94}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 10px;margin-top:22px}
.hero-meta span{font-size:.8125rem;font-weight:600;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.26);padding:5px 12px;border-radius:999px}

/* ---------- layout ---------- */
.cols{display:grid;grid-template-columns:1fr;gap:32px;padding:34px 0 70px;align-items:start}
@media (min-width:1000px){.cols{grid-template-columns:240px minmax(0,1fr);gap:52px}}

.toc h2{font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);
  font-weight:700;margin-bottom:12px}
html[dir="rtl"] .toc h2{letter-spacing:0;text-transform:none}
.toc ol{list-style:none;counter-reset:s}
.toc li{counter-increment:s}
.toc a{display:flex;gap:10px;text-decoration:none;color:var(--muted);padding:6px 10px;
  border-radius:var(--r-sm);line-height:1.45;font-size:.875rem;
  border-inline-start:2px solid transparent}
.toc a::before{content:counter(s,decimal-leading-zero);font-variant-numeric:tabular-nums;
  font-size:.75rem;font-weight:700;opacity:.5;padding-top:3px}
html[dir="rtl"] .toc a::before{content:counter(s)}
.toc a:hover{color:var(--ink);background:var(--surface-2)}
@media (min-width:1000px){.toc{position:sticky;top:76px}}

.doc{max-width:var(--measure);min-width:0}

/* ---------- sections ---------- */
.sec{margin-bottom:44px;scroll-margin-top:78px}
.sec > h2{font-size:clamp(1.3rem,1.1rem + .8vw,1.55rem);font-weight:700;
  letter-spacing:-.02em;line-height:1.25;margin-bottom:10px}
html[dir="rtl"] .sec > h2{letter-spacing:0;line-height:1.5}
.sec h3{font-size:1.0625rem;font-weight:700;margin:26px 0 8px}
.sec h4{font-size:.9375rem;font-weight:700;margin:18px 0 6px}
.sec p{margin-bottom:14px}
.sec ul,.sec ol{margin:0 0 16px;padding-inline-start:22px}
.sec li{margin-bottom:7px}
.sec a{color:var(--primary);text-underline-offset:3px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.875em;
  background:var(--surface-2);padding:1px 6px;border-radius:6px;direction:ltr;
  display:inline-block;unicode-bidi:embed}

/* second voice: plain-language gloss */
.plain{border-inline-start:3px solid var(--accent);background:var(--surface-2);
  padding:12px 16px;border-radius:0 var(--r-md) var(--r-md) 0;margin:0 0 18px;
  font-size:.9375rem;color:var(--muted)}
html[dir="rtl"] .plain{border-radius:var(--r-md) 0 0 var(--r-md)}
.plain b{color:var(--ink);font-weight:700}
.plain p:last-child{margin-bottom:0}

/* ---------- role lens (progressive enhancement) ---------- */
.lens{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);
  padding:6px;display:flex;gap:6px;margin-bottom:20px;box-shadow:var(--shadow-card)}
.lens button{flex:1;font:inherit;font-size:.9375rem;font-weight:600;border:0;
  background:transparent;color:var(--muted);padding:11px 8px;border-radius:18px;
  cursor:pointer;transition:background .18s,color .18s}
.lens button[aria-selected="true"]{background:var(--primary);color:#fff}
@media (max-width:560px){.lens{flex-direction:column}}
html:not(.has-js) .lens{display:none}
html.has-js .rolepanel[hidden]{display:none}
.rolepanel > h3:first-child{margin-top:0}

/* ---------- data cards ---------- */
.data{display:grid;gap:12px;margin-bottom:20px}
.datum{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--shadow-card)}
.datum-h{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:10px}
.datum-h b{font-size:.9375rem}
.tag{font-size:.6875rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  padding:3px 8px;border-radius:999px;line-height:1.4}
html[dir="rtl"] .tag{letter-spacing:0;text-transform:none;font-size:.75rem}
.tag.precise{background:rgba(229,72,77,.14);color:var(--error)}
.tag.sensitive{background:rgba(232,163,61,.18);color:var(--warning)}
.tag.routine{background:var(--surface-2);color:var(--muted)}
.datum dl{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:.875rem;margin:0}
.datum dt{color:var(--muted);font-weight:600;white-space:nowrap}
.datum dd{margin:0}
@media (max-width:560px){
  .datum dl{grid-template-columns:1fr;gap:0}
  .datum dt{margin-top:8px}
  .datum dd{margin-bottom:2px}
}

/* ---------- tables ---------- */
.tw{overflow-x:auto;margin-bottom:20px;border:1px solid var(--line);
  border-radius:var(--r-card);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.875rem;min-width:540px}
th,td{text-align:start;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:700;background:var(--surface-2);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}

/* ---------- callouts ---------- */
.note{border:1px solid var(--line);border-radius:var(--r-card);padding:16px 18px;
  background:var(--surface);margin-bottom:20px}
.note.warn{border-color:rgba(232,163,61,.5);background:rgba(232,163,61,.07)}
.note > :first-child{margin-top:0}
.note > :last-child{margin-bottom:0}

/* ---------- contact ---------- */
.contact{display:grid;gap:12px;grid-template-columns:1fr;margin-bottom:20px}
@media (min-width:700px){.contact{grid-template-columns:1fr 1fr}}
.ccard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--shadow-card)}
.ccard b{display:block;font-size:.9375rem;margin-bottom:6px}
.ccard a{font-weight:600;color:var(--primary);text-decoration:none;word-break:break-word}
.ccard a:hover{text-decoration:underline}
.ccard span{display:block;font-size:.8125rem;color:var(--muted);margin-top:6px}

/* ---------- accordion ---------- */
details.q{background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);margin-bottom:10px}
details.q summary{cursor:pointer;padding:15px 18px;font-weight:600;font-size:.9375rem;
  list-style:none;display:flex;align-items:center;gap:12px}
details.q summary::-webkit-details-marker{display:none}
details.q summary::after{content:"";margin-inline-start:auto;flex:none;width:9px;height:9px;
  border-inline-end:2px solid var(--muted);border-block-end:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .2s}
details.q[open] summary::after{transform:rotate(-135deg)}
details.q .a{padding:0 18px 16px;font-size:.9375rem}
details.q .a > :last-child{margin-bottom:0}
details.q .a p{margin-bottom:10px}
details.q .a ol,details.q .a ul{padding-inline-start:20px;margin-bottom:10px}
details.q .a li{margin-bottom:6px}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--line);background:var(--surface);padding:32px 0 44px;
  font-size:.875rem}
.foot-in{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between}
.foot a{color:var(--muted);text-decoration:none;margin-inline-end:18px}
.foot a:hover{color:var(--primary)}
.foot p{color:var(--muted)}

/* ---------- a11y floor ---------- */
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px}
.skip{position:absolute;inset-inline-start:-9999px;top:0;background:var(--primary);
  color:#fff;padding:10px 16px;border-radius:0 0 var(--r-md) 0;z-index:100;
  text-decoration:none}
.skip:focus{inset-inline-start:0}

@media print{
  .bar,.toc,.lens,.skip{display:none!important}
  .hero{background:none;color:var(--ink);border-bottom:2px solid var(--ink)}
  html.has-js .rolepanel[hidden]{display:block!important}
  details.q .a{display:block!important}
  .doc,.hero-in{max-width:none}
  body{font-size:11pt;background:#fff;color:#000}
}