@font-face { font-family: Vazirmatn; src: url(fonts/Vazirmatn-Variable.woff2) format('woff2'); font-weight: 100 900; font-display: swap; }
:root {
  --bg: #f5f6fa; --card: #fff; --ink: #1c2233; --muted: #5b6377; --line: #e3e6ef;
  --brand: #2a5bd7; --brand-ink: #fff; --ok: #12805c; --warn: #b26a00; --err: #c0332b;
  --lv-beginner: #1f6f9f; --lv-intermediate: #7447c0; --lv-advanced: #9a5f00; --lv-fail: #666e84;
  --radius: 12px; --shadow: 0 1px 2px rgba(20,30,60,.06), 0 6px 20px rgba(20,30,60,.05);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #12151d; --card: #1b2030; --ink: #e8ebf5; --muted: #9aa3ba; --line: #2b3247; --brand: #6e95ff; --brand-ink: #0d1220; --shadow: none; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 15px/1.9 Vazirmatn, Tahoma, sans-serif; background: var(--bg); color: var(--ink); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.6rem; line-height: 1.5; margin: .4em 0 .6em; }
h2 { font-size: 1.2rem; } .h3 { font-size: 1.05rem; margin: 1em 0 .5em; }
.wrap { max-width: 1080px; margin-inline: auto; padding-inline: 16px; }
.muted { color: var(--muted); } .center { text-align: center; } .narrow { max-width: 560px; margin-inline: auto; }
.strong { font-weight: 700; } .sub { padding-inline-start: 22px; } code { font-size: .9em; background: var(--line); padding: 0 .35em; border-radius: 4px; }
.top { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 58px; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 1.1rem; color: var(--ink); }
.nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--ink); } .nav a.btn { color: var(--brand-ink); }
main.wrap { padding-block: 20px 40px; min-height: 70vh; }
.foot { padding-block: 20px; color: var(--muted); font-size: .85rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin-block: 14px; box-shadow: var(--shadow); }
.btn { display: inline-block; background: var(--brand); color: var(--brand-ink); border: 0; border-radius: 10px; padding: 8px 18px; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(1.08); text-decoration: none; } .btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.btn-ghost { background: transparent; color: var(--brand); border: 1px solid var(--line); } .btn-sm { padding: 3px 12px; font-size: .9rem; } .btn-lg { padding: 12px 28px; font-size: 1.05rem; }
.link { background: none; border: 0; color: var(--brand); cursor: pointer; font: inherit; padding: 0; } .link.danger, .danger { color: var(--err); }
form.inline { display: inline; } .inline-gap { margin-top: 8px; }
.alert { padding: 10px 14px; border-radius: 10px; margin-block: 10px; border: 1px solid var(--line); background: var(--card); }
.alert-ok { border-color: var(--ok); color: var(--ok); } .alert-error { border-color: var(--err); color: var(--err); } .alert-warn { border-color: var(--warn); color: var(--warn); }
.hero { text-align: center; padding-block: 18px 6px; } .hero p { color: var(--muted); }
.search { display: flex; gap: 8px; max-width: 480px; margin: 14px auto 0; } .search input { flex: 1; }
input, select, textarea { font: inherit; color: inherit; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 7px 10px; max-width: 100%; }
textarea { width: 100%; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-block: 10px; justify-content: center; }
.chip { padding: 3px 14px; border: 1px solid var(--line); border-radius: 99px; color: var(--ink); background: var(--card); } .chip.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); } .chip:hover { text-decoration: none; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.grid .card { margin: 0; } a.exam { color: inherit; display: block; transition: transform .12s; } a.exam:hover { transform: translateY(-2px); text-decoration: none; }
a.exam h2 { margin: .3em 0; font-size: 1.1rem; }
.clamp { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin: 0 0 .5em; }
.meta { list-style: none; display: flex; gap: 14px; flex-wrap: wrap; padding: 0; margin: .4em 0; color: var(--muted); font-size: .88rem; }
.tag { display: inline-block; font-size: .78rem; padding: 0 10px; border-radius: 99px; background: var(--line); color: var(--muted); } .tag.ok { background: color-mix(in srgb, var(--ok) 18%, transparent); color: var(--ok); } .tag.warn { background: color-mix(in srgb, var(--warn) 18%, transparent); color: var(--warn); }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }
.lvl { display: inline-block; padding: 0 12px; border-radius: 99px; font-size: .85rem; font-weight: 700; color: #fff; background: var(--lv-fail); }
.lvl-beginner { background: var(--lv-beginner); } .lvl-intermediate { background: var(--lv-intermediate); } .lvl-advanced { background: var(--lv-advanced); }
.mine { margin-top: 8px; font-size: .9rem; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 16px 0; } .facts div { background: var(--bg); border-radius: 10px; padding: 8px 14px; } .facts dt { color: var(--muted); font-size: .82rem; } .facts dd { margin: 0; font-weight: 700; }
.levels { list-style: none; padding: 0; display: flex; gap: 18px; flex-wrap: wrap; } .cta { margin-top: 18px; } .prose { max-width: 70ch; }
.table-wrap { overflow-x: auto; } table { width: 100%; border-collapse: collapse; } th, td { text-align: start; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; } th { color: var(--muted); font-weight: 600; font-size: .85rem; white-space: nowrap; }
tr.off td { opacity: .55; } .acts { white-space: nowrap; }
.badges { display: flex; gap: 10px; flex-wrap: wrap; } .badge-card { display: flex; gap: 10px; align-items: center; border: 1px solid var(--line); border-radius: 10px; padding: 6px 14px; color: var(--ink); }
.result .big { font-size: 1.6rem; margin: 10px 0; } .result .big .lvl { font-size: 1.3rem; padding: 4px 28px; } .score { font-size: 2rem; font-weight: 800; margin: 4px 0; }
/* exam taking */
.take-bar { position: sticky; top: 58px; z-index: 4; display: flex; justify-content: space-between; align-items: center; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 16px; flex-wrap: wrap; }
.timer { font-size: 1.4rem; font-weight: 800; font-variant-numeric: tabular-nums; direction: ltr; } .timer.low { color: var(--err); }
.save-state { min-height: 1.6em; font-size: .85rem; color: var(--muted); padding-inline: 6px; }
fieldset.q { border: 1px solid var(--line); } fieldset { min-width: 0; margin: 0; padding: 0; border: 0; } fieldset.card { padding: 18px 20px; } .qn { display: inline-block; min-width: 1.8em; text-align: center; background: var(--brand); color: var(--brand-ink); border-radius: 8px; margin-inline-end: 6px; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; margin-block: 6px; cursor: pointer; } .opt:hover { border-color: var(--brand); } .opt:has(input:checked) { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 9%, transparent); }
.opt input { margin-top: .55em; } .submit-row { text-align: center; margin-block: 24px; }
/* admin */
body.admin { display: grid; grid-template-columns: 230px 1fr; min-height: 100vh; }
.side { background: var(--card); border-inline-end: 1px solid var(--line); padding: 16px; display: flex; flex-direction: column; gap: 8px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.side nav { display: flex; flex-direction: column; gap: 2px; margin-block: 10px; } .side nav a { color: var(--ink); padding: 6px 12px; border-radius: 8px; } .side nav a:hover { background: var(--bg); text-decoration: none; } .side nav a.on { background: var(--brand); color: var(--brand-ink); }
.side-foot { margin-top: auto; display: flex; flex-direction: column; gap: 4px; font-size: .85rem; }
.adm-main { padding: 20px 24px 50px; min-width: 0; } .adm-title { margin-top: 0; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 8px; } .stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 16px; } .stat span { display: block; color: var(--muted); font-size: .8rem; } .stat strong { font-size: 1.25rem; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 14px; align-items: start; } .cols .card { margin: 14px 0; }
.chart { width: 100%; height: 150px; } .chart rect { fill: var(--brand); }
.bar-row { display: grid; grid-template-columns: 100px 1fr 50px; gap: 8px; align-items: center; margin-block: 6px; } .meter { background: var(--bg); border-radius: 99px; height: 10px; overflow: hidden; } .meter i { display: block; height: 100%; background: var(--lv-fail); } .lvl-bg-beginner { background: var(--lv-beginner) !important; } .lvl-bg-intermediate { background: var(--lv-intermediate) !important; } .lvl-bg-advanced { background: var(--lv-advanced) !important; }
.form { display: flex; flex-direction: column; gap: 12px; } .form label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: .9rem; } .form label.check { flex-direction: row; align-items: center; font-weight: 400; gap: 8px; }
.form fieldset { display: flex; flex-direction: column; gap: 12px; } .row3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; } .bp { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; } .bp[hidden] { display: none; }
.optrow { display: flex; gap: 8px; align-items: center; margin-block: 6px; } .optrow input:not(.oc) { flex: 1; } .actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.picklist { list-style: none; padding: 0; margin: 8px 0; max-height: 360px; overflow-y: auto; border: 1px solid var(--line); border-radius: 10px; } .picklist li { padding: 4px 10px; border-bottom: 1px solid var(--line); } .picklist li.off { opacity: .55; } .picklist label { display: block; cursor: pointer; }
.diff { display: inline-block; padding: 0 8px; border-radius: 6px; font-size: .78rem; background: var(--line); } .d1 { background: #d6f1e3; color: #0b6b43; } .d2 { background: #e2f1d3; color: #3d6b0b; } .d3 { background: #fbf0c9; color: #7a5b00; } .d4 { background: #fadfc4; color: #8a4300; } .d5 { background: #f8d2d0; color: #9a1f19; }
.plain { list-style: none; padding: 0; } .plain li { padding: 5px 0; border-bottom: 1px solid var(--line); }
.pager { display: flex; gap: 6px; margin-top: 12px; } .pager a, .pager .cur { padding: 2px 11px; border: 1px solid var(--line); border-radius: 8px; } .pager .cur { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
@media (max-width: 800px) {
  body.admin { display: block; } .side { position: static; height: auto; } .side nav { flex-direction: row; flex-wrap: wrap; } .side-foot { margin-top: 8px; }
  .adm-main { padding: 14px 12px 40px; } .take-bar { top: 0; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

.skip { position: absolute; inset-inline-start: 8px; top: -60px; z-index: 20; background: var(--brand); color: var(--brand-ink); padding: 8px 14px; border-radius: 8px; }
.skip:focus { top: 8px; text-decoration: none; }
/* touch screens: comfortable tap targets */
@media (pointer: coarse), (max-width: 800px) {
  .btn, .btn-sm, input:not([type=checkbox]):not([type=radio]):not([type=hidden]), select { min-height: 44px; }
  .btn-sm { padding-block: 8px; }
  input[type=checkbox], input[type=radio] { width: 24px; height: 24px; }
  .picklist li { padding: 10px 12px; }
  .nav { gap: 0 14px; }
  .nav a, .side nav a, .acts a, .acts .link, .link { display: inline-block; padding-block: 6px; }
  .pager a, .pager .cur { padding: 8px 14px; }
  td, th { padding: 10px 8px; }
}

.take .qbody, .take .opt span { -webkit-user-select: none; user-select: none; }
.save-state.err { color: var(--err); font-weight: 600; }

.qnav { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 6px 0 10px; }
.qnav a { min-width: 34px; text-align: center; padding: 2px 8px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: var(--card); }
.qnav a.done { background: color-mix(in srgb, var(--ok) 16%, transparent); border-color: var(--ok); }
.qnav a.flag { box-shadow: inset 0 -3px 0 var(--warn); }
.qnav-key { margin-inline-start: auto; color: var(--muted); font-size: .8rem; }
.qnav-key .k { display: inline-block; width: 10px; height: 10px; border-radius: 3px; vertical-align: middle; margin-inline: 4px 2px; }
.qnav-key .k.done { background: var(--ok); } .qnav-key .k.flag { background: var(--warn); }
.qtools { display: flex; gap: 16px; flex-wrap: wrap; }
.review { border-top: 1px solid var(--line); padding-block: 10px; } .review p { margin: .3em 0; }
.progress-row { display: grid; grid-template-columns: 1fr 120px 60px; gap: 10px; align-items: center; margin-block: 6px; }

.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.qhead { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 8px; } .qhead .qn { flex: none; margin-top: 4px; }
.qbody { font-weight: 600; min-width: 0; } .qbody pre { font-weight: 400; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; overflow-x: auto; text-align: left; }
.qbody code, .review code, .muted code { background: var(--bg); padding: 0 .35em; border-radius: 4px; }
.qbody ul { margin: .3em 0; padding-inline-start: 1.4em; font-weight: 400; }
.qimg { display: block; max-width: 100%; max-height: 360px; height: auto; margin-top: 8px; border-radius: 8px; border: 1px solid var(--line); }

.coupon { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; } .coupon input { width: 180px; text-transform: uppercase; }

/* certificate */
body.bare { background: #fff; color: #1c2233; }
.cert-actions { max-width: 1000px; margin: 16px auto; padding-inline: 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.cert { max-width: 1000px; margin: 0 auto 40px; padding: 16px; }
.cert-inner { border: 6px double #9a5f00; padding: 40px 32px; text-align: center; border-radius: 6px; background: #fffdf7; color: #1c2233; }
.cert-site { color: #5b6377; margin: 0; } .cert h1 { font-size: 2.2rem; margin: .2em 0 .6em; color: #7a4a00; }
.cert-lead { color: #5b6377; margin: .6em 0 .2em; } .cert-name { font-size: 2rem; font-weight: 800; margin: .1em 0; }
.cert-exam { font-size: 1.4rem; font-weight: 700; margin: .1em 0; } .cert-exam span { font-weight: 400; color: #5b6377; font-size: 1rem; }
.cert-level .lvl { font-size: 1.3rem; padding: 4px 30px; }
.cert-foot { display: flex; justify-content: space-between; gap: 20px; margin-top: 34px; flex-wrap: wrap; font-size: .9rem; } .cert-code { word-break: break-all; }
@page { size: A4 landscape; margin: 10mm; }
@media print { .cert-actions { display: none; } .cert { margin: 0; padding: 0; } .cert-inner { border-width: 5px; } }