/* Exam EU: one small, dependency-free stylesheet for three study sites.
   Light theme, mobile first, logical properties for RTL. */

:root {
  --paper: #fbfaf7;
  --surface: #ffffff;
  --ink: #1b1b18;
  --muted: #5c5b54;
  --line: #e2ddd2;
  --line-strong: #c9c2b3;
  --accent: #125e4c;
  --accent-ink: #0b4438;
  --accent-soft: #e9f2ee;
  --accent-line: #b9d6cb;
  --warm: #f6efe1;
  --warm-line: #e6d8bf;
  --danger: #9b2c1f;
  --danger-soft: #fbeceb;
  --ok: #1d6b46;
  --ok-soft: #e8f4ec;
  --focus: #1f5fbf;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 0 rgba(27, 27, 24, 0.04);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --measure: 44rem;
  --wrap: 70rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

[dir="rtl"] body { font-family: "Noto Naskh Arabic", "Geeza Pro", "Segoe UI", Tahoma, sans-serif; }
[lang="ur"] body { font-family: "Noto Nastaliq Urdu", "Geeza Pro", "Segoe UI", Tahoma, sans-serif; }

img { max-width: 100%; height: auto; }

a { color: var(--accent-ink); text-underline-offset: 0.16em; }
a:hover { color: var(--accent); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.skip {
  position: absolute;
  inset-inline-start: 0.5rem;
  top: -4rem;
  z-index: 50;
  background: var(--ink);
  color: #fff;
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
}
.skip:focus { top: 0.5rem; color: #fff; }

.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;
}

/* ---------------------------------------------------------------- header */

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  min-height: 4.25rem;
  padding-block: 0.65rem;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  margin-inline-end: auto;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
}
.brand small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.site-nav { display: flex; flex-wrap: wrap; gap: 0.2rem 1rem; align-items: center; }
.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 550;
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

.langmenu { position: relative; }
.langmenu summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.38rem 0.8rem;
  font-size: 0.88rem;
  font-weight: 600;
}
.langmenu summary::-webkit-details-marker { display: none; }
.langmenu summary::after { content: "▾"; font-size: 0.7rem; color: var(--muted); }
.langmenu[open] summary { border-color: var(--accent); }
.langmenu ul {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 0.4rem);
  z-index: 30;
  margin: 0;
  padding: 0.35rem;
  list-style: none;
  min-width: 11rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(27, 27, 24, 0.12);
}
.langmenu li a {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 7px;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
}
.langmenu li a:hover { background: var(--accent-soft); }
.langmenu li a[aria-current="true"] { background: var(--accent-soft); font-weight: 700; }

/* --------------------------------------------------------------- banners */

.notice-strip {
  background: var(--warm);
  border-bottom: 1px solid var(--warm-line);
  font-size: 0.84rem;
  color: #4d4433;
}
.notice-strip .wrap { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; padding-block: 0.45rem; }
.notice-strip strong { color: #3d3423; }

main { display: block; }
.page { padding-block: clamp(1.6rem, 4vw, 3.2rem) 3.5rem; }

/* ------------------------------------------------------------------ hero */

.hero { padding-block: clamp(1.2rem, 5vw, 3.4rem) 2rem; }
.eyebrow {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.7rem;
}
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin: 0 0 0.6rem;
  text-wrap: balance;
}
h1 { font-size: clamp(2.1rem, 5.2vw, 3.55rem); font-weight: 700; }
h2 { font-size: clamp(1.45rem, 2.8vw, 2.05rem); margin-top: 2.4rem; }
h3 { font-size: 1.28rem; }
h4 { font-size: 1.05rem; }
.lede { font-size: clamp(1.05rem, 2.2vw, 1.24rem); color: var(--muted); max-width: 42rem; margin: 0 0 1.4rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-block: 1.3rem 0.8rem; }
.hero-meta { font-size: 0.87rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 0.35rem 1.1rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font: inherit;
  font-weight: 650;
  font-size: 0.98rem;
  padding: 0.72rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.btn:hover { background: var(--accent-ink); color: #fff; }
.btn.secondary { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn.secondary:hover { background: var(--accent-soft); color: var(--accent-ink); border-color: var(--accent-line); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.btn.small { padding: 0.45rem 0.75rem; font-size: 0.88rem; }

/* ----------------------------------------------------------------- cards */

.grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 44rem) { .grid.two { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 60rem) { .grid.three { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 0.35rem; }
.card p { margin: 0.25rem 0 0; color: var(--muted); font-size: 0.95rem; }
a.card { display: block; color: inherit; text-decoration: none; }
a.card:hover { border-color: var(--accent-line); background: #fff; }
.card .meta { margin-top: 0.7rem; font-size: 0.8rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 0.4rem 0.9rem; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.badge.warm { background: var(--warm); color: #6a4b16; }
.badge.plain { background: #f0eee8; color: var(--muted); }

.stats { display: flex; flex-wrap: wrap; gap: 1.4rem 2.4rem; margin-block: 1.6rem 0.4rem; }
.stat strong { display: block; font-family: var(--font-serif); font-size: 1.9rem; line-height: 1.1; }
.stat span { font-size: 0.85rem; color: var(--muted); }

/* ------------------------------------------------------------ breadcrumbs */

.breadcrumbs { font-size: 0.84rem; color: var(--muted); margin-bottom: 1rem; display: flex; flex-wrap: wrap; gap: 0.35rem; }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--ink); text-decoration: underline; }
.breadcrumbs span[aria-hidden] { color: var(--line-strong); }

/* ------------------------------------------------------------------ study */

.study-grid { display: grid; gap: 1.2rem; margin-top: 1.6rem; }
@media (max-width: 61.99rem) {
  /* On a phone, read the explanation in your language before the long source text. */
  .study-grid .explain { order: -1; }
}
@media (min-width: 62rem) { .study-grid { grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr); align-items: start; } }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1rem, 2.5vw, 1.5rem);
}
.panel-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.8rem;
}
.official { border-inline-start: 4px solid var(--line-strong); }
.explain { background: var(--accent-soft); border-color: var(--accent-line); }
.explain .panel-label { color: var(--accent-ink); }

.prose { max-width: var(--measure); }
.prose p { margin: 0 0 0.9rem; }
.prose h4 { margin: 1.4rem 0 0.45rem; font-size: 1.02rem; }
.prose ul, .prose ol { margin: 0 0 1rem; padding-inline-start: 1.3rem; }
.prose li { margin-bottom: 0.3rem; }
.prose blockquote {
  margin: 1rem 0;
  padding-inline-start: 1rem;
  border-inline-start: 3px solid var(--warm-line);
  color: #433c2c;
  font-family: var(--font-serif);
  white-space: pre-line;
}
.prose table { width: 100%; border-collapse: collapse; margin: 0.8rem 0 1.2rem; font-size: 0.93rem; }
.prose td, .prose th { border: 1px solid var(--line); padding: 0.45rem 0.55rem; text-align: start; vertical-align: top; }
.prose .checklist { list-style: none; padding-inline-start: 0; }
.prose .checklist li { padding-inline-start: 1.6rem; position: relative; }
.prose .checklist li::before { content: "✓"; position: absolute; inset-inline-start: 0; color: var(--accent); font-weight: 800; }
.prose .aside { background: var(--warm); border: 1px solid var(--warm-line); border-radius: var(--radius-sm); padding: 0.9rem 1rem; margin: 1rem 0; }
.prose .aside p:last-child { margin-bottom: 0; }

.fallback-note, .ai-note, .picture-note {
  margin-top: 0.8rem;
  font-size: 0.85rem;
  color: #6a4b16;
  background: var(--warm);
  border: 1px solid var(--warm-line);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
}

.copyright-note { margin-top: 1.2rem; font-size: 0.8rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 0.8rem; }

/* ------------------------------------------------------------------ quiz */

.quiz { margin-top: 1.2rem; }
.quiz-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem; margin-bottom: 0.8rem; }
.quiz-head h3 { margin: 0; font-size: 1.12rem; }
.quiz-progress { font-size: 0.82rem; color: var(--muted); }
.question { border-top: 1px solid var(--line); padding-top: 1rem; margin-top: 1rem; }
.question:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.question legend, .question .qtext { font-weight: 650; margin-bottom: 0.7rem; }
.question fieldset { border: 0; margin: 0; padding: 0; }
.option {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  width: 100%;
  text-align: start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.62rem 0.7rem;
  margin-bottom: 0.45rem;
  font: inherit;
  font-size: 0.96rem;
  cursor: pointer;
}
.option:hover { border-color: var(--line-strong); background: #fffdf9; }
.option input { margin-top: 0.28rem; accent-color: var(--accent); }
.option.is-selected { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.option.is-correct { border-color: var(--ok); background: var(--ok-soft); }
.option.is-wrong { border-color: var(--danger); background: var(--danger-soft); }
.option[disabled] { cursor: default; }
.quiz-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.7rem; margin-top: 0.7rem; }
.feedback { margin-top: 0.6rem; font-size: 0.93rem; border-radius: var(--radius-sm); padding: 0.6rem 0.75rem; display: none; }
.feedback.show { display: block; }
.feedback.good { background: var(--ok-soft); border: 1px solid #b9dcc6; color: #174a31; }
.feedback.bad { background: var(--danger-soft); border: 1px solid #ecc4bf; color: #6f2117; }
.feedback p { margin: 0.2rem 0 0; }
.feedback .feedback-answer { font-weight: 600; }

/* ------------------------------------------------------------------ exam */

.exam-shell { max-width: 52rem; margin-inline: auto; }
.exam-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 250, 247, 0.96);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.65rem 0.85rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 1rem;
}
.timer { font-variant-numeric: tabular-nums; font-weight: 750; font-size: 1.05rem; }
.timer.low { color: var(--danger); }
.exam-progress { font-size: 0.84rem; color: var(--muted); }
.exam-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1rem, 3vw, 1.6rem);
}
.exam-q { font-family: var(--font-sans); font-weight: 650; font-size: 1.08rem; line-height: 1.5; max-width: 46rem; }
.exam-options { display: grid; gap: 0.45rem; margin-top: 0.9rem; }
.qgrid { display: flex; flex-wrap: wrap; gap: 0.3rem; margin-top: 1rem; }
.qgrid button {
  width: 2.1rem; height: 2.1rem;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}
.qgrid button.answered { background: var(--accent-soft); border-color: var(--accent-line); }
.qgrid button.current { outline: 2px solid var(--accent); outline-offset: 1px; }
.exam-nav { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.6rem; margin-top: 1rem; }
.result { border-inline-start: 5px solid var(--accent); }
.result.fail { border-inline-start-color: var(--danger); }
.review-list { list-style: none; padding: 0; margin: 1rem 0 0; }
.review-list li { border-top: 1px solid var(--line); padding: 0.8rem 0; }
.review-list .ok { color: var(--ok); font-weight: 700; }
.review-list .no { color: var(--danger); font-weight: 700; }

/* ----------------------------------------------------------------- lists */

.list { list-style: none; padding: 0; margin: 0; }
.list li { border-top: 1px solid var(--line); }
.list li:first-child { border-top: 0; }
.list a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.3rem 1rem;
  padding: 0.72rem 0.1rem;
  text-decoration: none;
  color: var(--ink);
}
.list a:hover { color: var(--accent-ink); }
.list .meta { font-size: 0.8rem; color: var(--muted); }
.section-list { counter-reset: sec; }
.section-list a::before { counter-increment: sec; content: counter(sec) "."; color: var(--muted); font-variant-numeric: tabular-nums; margin-inline-end: 0.5rem; }

.pager { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.6rem; margin-top: 1.4rem; }
.pager a { font-size: 0.9rem; }

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 1rem 0 1.2rem; }
.filters select, .filters input {
  font: inherit;
  font-size: 0.92rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.6rem; }
.tag-row .badge { font-weight: 600; }

/* ----------------------------------------------------------------- about */

.about-grid { display: grid; gap: 1.2rem; }
@media (min-width: 56rem) { .about-grid { grid-template-columns: 1.4fr 1fr; align-items: start; } }
.source-list { list-style: none; padding: 0; margin: 0.6rem 0 0; }
.source-list li { padding: 0.55rem 0; border-top: 1px solid var(--line); }
.source-list li:first-child { border-top: 0; }
.source-list a { font-weight: 600; }
.source-list small { display: block; color: var(--muted); }

/* ------------------------------------------------------------- ad slot */

/* Reserved space so a later ad insertion does not shift the layout.
   Disabled by default; the build only renders a slot when ads.enabled=true. */
.ad-slot {
  min-height: 280px;
  margin-block: 1.6rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: #f6f4ee;
}
@media (min-width: 60rem) { .ad-slot { min-height: 250px; } }

/* ---------------------------------------------------------------- footer */

.site-footer { border-top: 1px solid var(--line); background: #f4f1ea; margin-top: 2rem; }
.disclaimer {
  grid-column: 1 / -1;
  padding: 1rem 1.1rem;
  background: var(--warm);
  border: 1px solid var(--warm-line);
  border-inline-start: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  color: #3d3423;
}
.disclaimer h4 {
  margin: 0 0 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
}
.disclaimer p { margin: 0 0 0.45rem; font-size: 0.92rem; line-height: 1.75; max-width: 48rem; }
.disclaimer .disclaimer-answer { font-weight: 600; color: #3d3423; }
.disclaimer-links { list-style: none; display: flex; flex-wrap: wrap; gap: 0.3rem 1.2rem; margin: 0.2rem 0 0; padding: 0; font-size: 0.92rem; line-height: 1.8; }
[lang="ur"] .disclaimer p, [lang="ur"] .disclaimer-links, [lang="ur"] .disclaimer h4 { line-height: 2.1; }
.disclaimer-links a { color: var(--accent-ink); font-weight: 600; }
.analytics-note { margin: 0.6rem 0 0; font-size: 0.78rem; color: var(--muted); }
.footer-inner { padding-block: 2rem 2.4rem; display: grid; gap: 1.4rem; }
@media (min-width: 52rem) { .footer-inner { grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem; } }
.site-footer h4 { font-family: var(--font-sans); font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem; }
.site-footer p, .site-footer li { font-size: 0.86rem; color: var(--muted); margin: 0 0 0.35rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer a { color: var(--ink); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-bottom { border-top: 1px solid var(--line); padding-block: 0.9rem 1.4rem; font-size: 0.78rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; justify-content: space-between; }

/* -------------------------------------------------------------- utilities */

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.6rem; }
.mt-2 { margin-top: 1.2rem; }
.mt-3 { margin-top: 2rem; }
.muted { color: var(--muted); }
.small { font-size: 0.86rem; }
.center { text-align: center; }
.divider { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }

@media (prefers-reduced-motion: no-preference) {
  .card, .option, .btn, .site-nav a { transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease; }
}

@media print {
  .site-header, .site-footer, .hero-actions, .langmenu, .ad-slot, .quiz-actions { display: none !important; }
  .study-grid { display: block; }
  .panel { break-inside: avoid; }
}