/* Colors mirror constants/appTheme.ts from the mobile app. */
:root {
  --background: #f5f5f5;
  --card: #ffffff;
  --text: #333333;
  --muted: #666666;
  --border: #dddddd;
  --input-bg: #f7f7f7;
  --primary: #00838f;
  --secondary: #1976d2;
  --gold: #ffd54f;
  --hero: #ff7043;
  --green: #2e7d32;
  --orange: #b85600;
  --red: #c62828;
  --purple: #8e24aa;
  /* Solid fills behind white text: >= 4.5:1 contrast in both themes. */
  --fill-blue: #1976d2;
  --fill-teal: #00838f;
  --fill-green: #2e7d32;
  --fill-orange: #b85600;
  --fill-red: #c62828;
  --fill-purple: #8e24aa;
  --ok-bg: #e8f5e9;
  --bad-bg: #ffebee;
  --shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  --shadow-strong: 0 3px 10px rgba(0, 0, 0, 0.16);
  color-scheme: light;
}

:root[data-theme="dark"] {
  --background: #101820;
  --card: #1e2a36;
  --text: #f5f7fa;
  --muted: #b8c2cc;
  --border: #34495e;
  --input-bg: #263544;
  --primary: #00bcd4;
  --secondary: #64b5f6;
  --gold: #fbc02d;
  --hero: #d95f33;
  --green: #66bb6a;
  --orange: #ffb74d;
  --red: #ef5350;
  --ok-bg: #1a3a1a;
  --bad-bg: #3a1a1a;
  --shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
  --shadow-strong: 0 3px 10px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--primary); }

[hidden] { display: none !important; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
}
.topbar-title {
  flex: 1;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-title.home { font-weight: 400; color: var(--muted); }
.pill-btn {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
}
.pill-btn.primary { background: var(--fill-teal); color: #fff; }
.pill-btn.plain { background: var(--border); color: var(--text); }
.topbar-link {
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
  padding: 5px 8px;
  border-radius: 6px;
}
.topbar-link:hover { background: var(--input-bg); }

/* ---------- Layout ---------- */
main {
  flex: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}
main.flush { padding: 0 0 48px; }
.pad { padding: 20px; }

.site-footer {
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  padding: 16px;
}
.site-footer a { color: var(--muted); }

h1.title {
  font-size: 30px;
  font-weight: 800;
  margin: 0 0 6px;
  text-align: center;
}
h1.title.left { text-align: left; }
.subtitle {
  font-size: 15px;
  color: var(--muted);
  text-align: center;
  margin: 0 0 20px;
}
.subtitle.left { text-align: left; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }

.page-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0 0 8px;
}
.section-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--secondary);
  margin: 0 0 10px;
}
.section-label {
  font-size: 16px;
  color: var(--muted);
  margin: 8px 0 12px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  display: block;
  color: inherit;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
a.card:hover { transform: translateY(-1px); box-shadow: var(--shadow-strong); }
.card.completed { border-color: var(--green); }
.card.locked { opacity: 0.55; cursor: default; }
a.card.locked:hover { transform: none; box-shadow: var(--shadow); }
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.card-number { color: var(--muted); font-size: 13px; font-weight: 600; }
.card-title { font-size: 18px; font-weight: 700; margin: 0 0 4px; }
.card-category { font-size: 13px; color: var(--secondary); font-weight: 600; margin-bottom: 6px; }
.card-desc { font-size: 13px; color: var(--muted); margin: 0 0 10px; }
.status { font-size: 12px; font-weight: 600; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

/* ---------- Home ---------- */
.welcome {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
  text-align: center;
  margin: 0 0 18px;
}
.option-btn {
  display: flex;
  align-items: center;
  width: 100%;
  border-radius: 16px;
  padding: 18px 16px;
  margin-bottom: 14px;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.option-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2); }
.option-icon { width: 48px; font-size: 32px; text-align: center; margin-right: 14px; flex-shrink: 0; }
.option-text { display: block; flex: 1; min-width: 0; }
.option-title { display: block; font-size: 18px; font-weight: 700; margin-bottom: 2px; }
.option-sub { display: block; font-size: 13px; color: rgba(255, 255, 255, 0.92); line-height: 1.4; }
.option-progress { display: flex; align-items: center; gap: 8px; margin-top: 8px; font-size: 12px; font-weight: 600; }
.option-progress:empty { display: none; }
.mini-bar { flex: 0 0 70px; height: 5px; border-radius: 3px; background: rgba(255, 255, 255, 0.3); overflow: hidden; }
.mini-bar span { display: block; height: 100%; background: #fff; border-radius: 3px; }

.continue-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 2px 12px;
  background: var(--card);
  border: 2px solid var(--primary);
  border-radius: 16px;
  padding: 14px 18px;
  margin-bottom: 16px;
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 0.12s ease;
}
.continue-card:hover { transform: translateY(-1px); }
.continue-kicker { grid-column: 1; font-size: 12px; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: 0.8px; }
.continue-title { grid-column: 1; font-size: 16px; font-weight: 700; }
.continue-arrow { grid-column: 2; grid-row: 1 / span 2; font-size: 22px; color: var(--primary); }

.save-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  margin-top: 6px;
}
.save-card .btn { flex-shrink: 0; padding: 9px 16px; }

.hero-badge {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}
.divider-text { display: flex; align-items: center; gap: 10px; margin: 22px 0 14px; color: var(--muted); font-size: 13px; }
.divider-text::before, .divider-text::after { content: ""; flex: 1; height: 1px; background: var(--border); }

/* ---------- Login ---------- */
.login-card { max-width: 460px; margin: 0 auto; }
.provider-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.provider-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: border-color 0.12s, transform 0.08s;
}
.provider-btn:hover { border-color: var(--primary); }
.provider-btn:active { transform: scale(0.99); }
.provider-icon { display: inline-flex; width: 22px; height: 22px; }
.provider-icon svg { width: 100%; height: 100%; }
.login-benefits { list-style: none; padding: 0; margin: 18px 0; display: grid; gap: 8px; font-size: 14px; }
.login-benefits li { background: var(--card); border-radius: 10px; padding: 10px 12px; }

.wotd {
  background: var(--card);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 20px;
  border-left: 4px solid var(--gold);
  box-shadow: var(--shadow);
}
.wotd-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.wotd-label { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.wotd-word { font-size: 22px; font-weight: 700; color: var(--primary); margin-bottom: 2px; }
.wotd-pron { font-size: 14px; font-style: italic; color: var(--muted); margin-bottom: 6px; }
.wotd-trans { font-size: 16px; }
.icon-btn {
  background: none;
  border: 0;
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  border-radius: 6px;
}
.icon-btn:hover { background: var(--input-bg); }

.onboarding {
  max-width: 460px;
  margin: 12vh auto 0;
  text-align: center;
}

/* ---------- Forms & buttons ---------- */
.input, textarea.input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 15px;
  font-size: 17px;
  color: var(--text);
  font-family: inherit;
  margin-bottom: 14px;
}
.input:focus { outline: 2px solid var(--primary); outline-offset: 1px; }
textarea.input { min-height: 150px; resize: vertical; font-size: 15px; }
.input.correct { border-color: var(--green); background: var(--ok-bg); }
.input.wrong { border-color: var(--red); background: var(--bad-bg); }
label.field-label { display: block; font-weight: 700; margin-bottom: 6px; }
label.field-label.left { text-align: left; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
.inline-input {
  flex: 1;
  min-width: 0;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 16px;
  color: var(--text);
  font-family: inherit;
}
.btn-sm { padding: 8px 14px; font-size: 14px; border-radius: 8px; }

.btn {
  display: inline-block;
  border: 0;
  border-radius: 12px;
  padding: 13px 22px;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: filter 0.12s ease, transform 0.08s ease;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.35; cursor: default; filter: none; transform: none; }
.btn.block { display: block; width: 100%; }
.btn-primary { background: var(--fill-blue); color: #fff; }
.btn-teal { background: var(--fill-teal); color: #fff; }
.btn-green { background: var(--fill-green); color: #fff; }
.btn-secondary {
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 600;
}
.btn-link {
  background: none;
  border: 0;
  color: var(--primary);
  text-decoration: underline;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
  padding: 8px;
}

/* ---------- Progress dots / step tabs ---------- */
.dots-bar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 10px 0 8px;
  position: sticky;
  top: 47px;
  z-index: 5;
}
.dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
}
.dots-label { text-align: center; font-size: 12px; color: var(--muted); margin-top: 6px; font-weight: 600; }
.dot { width: 8px; height: 8px; border-radius: 4px; background: var(--border); transition: all 0.2s; }
.dot.active { width: 22px; background: var(--secondary); }
.dot.done { background: var(--fill-green); }

.steps-bar {
  display: flex;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 47px;
  z-index: 5;
}
.step-tab {
  flex: 1;
  padding: 12px 4px 9px;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}
.step-tab:disabled { cursor: default; opacity: 0.6; }
.step-tab.active { border-bottom-color: var(--secondary); color: var(--secondary); }
.step-tab.done { border-bottom-color: var(--green); color: var(--green); }
.step-tab.done.active { border-bottom-color: var(--secondary); }

.nav-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--card);
  border-top: 1px solid var(--border);
  position: sticky;
  bottom: 0;
}
.nav-prev {
  min-width: 90px;
  background: none;
  border: 0;
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}

/* ---------- Content blocks ---------- */
.rich { font-size: 15px; line-height: 1.65; }
.rich p { margin: 0 0 12px; }
.rich ul { margin: 0 0 14px; padding-left: 20px; }
.rich li { margin-bottom: 5px; }
.rich-h {
  font-size: 13px;
  font-weight: 700;
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin: 22px 0 8px;
}
.rich-num { display: flex; gap: 10px; align-items: baseline; }
.rich-num .num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--fill-teal);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transform: translateY(-1px);
}
.body-text { font-size: 15px; line-height: 1.6; margin: 0 0 8px; }
.pre-wrap { white-space: pre-line; }
.intro { font-size: 16px; font-style: italic; line-height: 1.55; margin: 0 0 18px; }
.scenario-title, .les-title { font-size: 26px; font-weight: 800; margin: 0 0 12px; }

.word-row { padding: 10px 0; border-bottom: 1px solid var(--border); }
.word-pap { font-size: 16px; font-weight: 700; }
.word-pron { font-size: 12px; color: var(--muted); font-style: italic; }
.word-nl { font-size: 14px; color: var(--secondary); }
.word-ex { font-size: 12px; color: var(--muted); font-style: italic; margin-top: 2px; }

.callout {
  background: var(--input-bg);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 10px;
  border-left: 3px solid var(--primary);
}
.callout.warn { border-left-color: var(--orange); }
.callout-title { font-size: 15px; font-weight: 700; color: var(--orange); margin-bottom: 4px; }
.callout-remember { font-size: 13px; color: var(--secondary); font-weight: 600; margin-top: 4px; }
.callout-italic { font-style: italic; }
.bullets { padding-left: 20px; margin: 8px 0; }
.bullets li { margin-bottom: 4px; }

.examples {
  background: var(--input-bg);
  border-radius: 12px;
  padding: 14px;
  margin-top: 18px;
}
.example-row { margin-bottom: 10px; border-left: 3px solid var(--primary); padding-left: 10px; }
.example-pap { font-weight: 700; }
.example-nl { font-size: 13px; color: var(--muted); }

.completed-banner {
  display: inline-block;
  background: var(--fill-green);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  border-radius: 10px;
  padding: 5px 14px;
  margin-bottom: 12px;
}

/* ---------- Quiz ---------- */
.quiz-progress {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}
.quiz-question { font-size: 19px; font-weight: 700; line-height: 1.4; margin: 0 0 20px; }
.option {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 10px;
  font-size: 15px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.option:hover:not(:disabled) { border-color: var(--secondary); }
.option:disabled { cursor: default; }
.option.correct { background: var(--fill-green); border-color: var(--fill-green); color: #fff; }
.option.wrong { background: var(--fill-red); border-color: var(--fill-red); color: #fff; }
.option.alt { background: var(--input-bg); }
.explanation {
  font-size: 14px;
  color: var(--secondary);
  font-style: italic;
  background: var(--input-bg);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 4px 0 12px;
}
.score { font-size: 56px; font-weight: 800; margin: 16px 0; text-align: center; }
.score.pass { color: var(--green); }
.score.fail { color: var(--red); }
.result { max-width: 460px; margin: 40px auto; text-align: center; }

/* ---------- Flashcards ---------- */
.flashcard {
  background: var(--card);
  border-radius: 16px;
  padding: 36px 24px;
  text-align: center;
  box-shadow: var(--shadow-strong);
  margin-bottom: 24px;
}
.flashcard .fc-pap { font-size: 30px; font-weight: 800; margin-bottom: 8px; }
.flashcard .fc-pron { font-size: 14px; color: var(--muted); font-style: italic; margin-bottom: 16px; }
.flashcard .fc-divider { width: 60%; height: 1px; background: var(--border); margin: 0 auto 16px; }
.flashcard .fc-nl { font-size: 22px; color: var(--secondary); }
.two-col { display: flex; gap: 12px; }
.two-col > * { flex: 1; }

.overview-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.overview-row .right { color: var(--secondary); text-align: right; }

/* ---------- Lessons list ---------- */
.blok-heading {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 22px 0 10px;
}
.step-pills { display: flex; flex-wrap: wrap; gap: 6px; }
.step-pill {
  border-radius: 999px;
  padding: 3px 10px;
  background: var(--border);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}
.step-pill.done { background: var(--fill-green); color: #fff; }
.step-pill.active { background: var(--fill-blue); color: #fff; }
.locked-hint { font-size: 12px; color: var(--muted); font-style: italic; }

/* ---------- Word practice ---------- */
.header-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 6px; }
.header-row h1 { font-size: 24px; margin: 0; }
.header-right { display: flex; align-items: center; gap: 12px; }
.xp-badge { background: var(--fill-orange); color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 12px; font-weight: 700; }
.mode-tabs {
  display: flex;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  margin: 12px 0 16px;
}
.mode-tab {
  flex: 1;
  padding: 8px;
  border: 0;
  background: none;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
}
.mode-tab.active { background: var(--fill-blue); color: #fff; }
.unlock-banner {
  background: var(--fill-green);
  color: #fff;
  font-weight: 700;
  text-align: center;
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 16px;
}
.practice-card { background: var(--card); border-radius: 16px; padding: 22px; box-shadow: var(--shadow); }
.prompt-label { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.prompt-word { font-size: 28px; font-weight: 800; margin-bottom: 14px; }
.hint-btn {
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  margin-bottom: 12px;
  font-family: inherit;
}
.hint-text { font-size: 14px; color: var(--secondary); font-style: italic; margin-bottom: 12px; }
.feedback { border-radius: 10px; padding: 14px; margin-bottom: 14px; border-left: 4px solid; font-weight: 600; }
.feedback.ok { background: var(--ok-bg); border-left-color: var(--green); }
.feedback.bad { background: var(--bad-bg); border-left-color: var(--red); }
.feedback .fb-progress { font-size: 13px; color: var(--green); margin-top: 4px; font-weight: 500; }
.accent-keys { display: flex; flex-wrap: wrap; gap: 6px; margin: -6px 0 14px; }
.accent-key {
  min-width: 34px;
  padding: 5px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  cursor: pointer;
  font-size: 15px;
  font-family: inherit;
}

.list-card { background: var(--card); border-radius: 12px; padding: 14px; margin-bottom: 14px; box-shadow: var(--shadow); }
.list-card.locked { opacity: 0.45; }
.list-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-weight: 700; }
.list-header .score-txt { color: var(--secondary); }
.progress-bar { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-bottom: 10px; }
.progress-fill { height: 100%; background: var(--fill-green); border-radius: 3px; transition: width 0.3s; }
.wl-row {
  display: grid;
  grid-template-columns: 1fr 1fr 44px;
  gap: 8px;
  align-items: center;
  font-size: 14px;
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.wl-row .nl { font-size: 12px; color: var(--muted); }
.wl-row .cnt { font-size: 12px; color: var(--muted); text-align: right; }
.wl-row .mastered { color: var(--green); font-weight: 600; }

/* ---------- Settings ---------- */
.settings-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 14px 0 8px;
}
.option-group { background: var(--card); border-radius: 12px; overflow: hidden; margin-bottom: 16px; box-shadow: var(--shadow); }
.option-row {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: none;
  color: var(--text);
  font-size: 16px;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
}
.option-row:last-child { border-bottom: 0; }
button.option-row:hover { background: var(--input-bg); }
.option-row .ico { font-size: 22px; width: 28px; text-align: center; }
.option-row .lbl { flex: 1; }
.option-row.danger .lbl { color: #ef4444; }
.segmented { display: flex; gap: 4px; background: var(--input-bg); border-radius: 8px; padding: 3px; }
.segmented button {
  border: 0;
  background: none;
  padding: 5px 10px;
  border-radius: 6px;
  color: var(--muted);
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.segmented button.active { background: var(--fill-teal); color: #fff; }

/* ---------- Contact ---------- */
.contact-card {
  background: var(--card);
  border-radius: 24px;
  padding: 24px;
  border: 3px solid var(--gold);
  box-shadow: var(--shadow-strong);
  max-width: 560px;
  margin: 0 auto;
}
.contact-icon { font-size: 42px; text-align: center; }
.flash-wrap { max-width: 560px; margin: 0 auto 8px; }
main.flush .flash-wrap { padding: 16px 20px 0; }
.flash { border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; font-weight: 600; }
.flash.success { background: var(--ok-bg); border-left: 4px solid var(--green); }
.flash.error { background: var(--bad-bg); border-left: 4px solid var(--red); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--background);
  padding: 11px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: var(--shadow-strong);
  z-index: 50;
  max-width: calc(100% - 32px);
}

@media (max-width: 480px) {
  main { padding: 18px 16px 40px; }
  h1.title { font-size: 26px; }
  .scenario-title, .les-title { font-size: 22px; }
  .topbar-link { padding: 5px 4px; }
}

/* Letter in front of quiz options (a-d; also keyboard shortcuts) */
.option { display: flex; align-items: center; gap: 12px; }
.option-key {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
}
.option.correct .option-key, .option.wrong .option-key { color: #fff; border-color: rgba(255, 255, 255, 0.6); }

/* ---------- Wide list pages (scenarios, lessons) ---------- */
main.wide { max-width: 1040px; }
.card-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.card-grid .card { margin-bottom: 0; }
@media (min-width: 760px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}
.blok-heading { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.level-count { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: none; letter-spacing: 0; }
.filter-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 8px; }
.chip {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}
.chip.active { background: var(--fill-teal); border-color: var(--fill-teal); color: #fff; }
.level-section { margin-bottom: 8px; }

/* ---------- Accessibility ---------- */
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn:focus-visible, .option:focus-visible, .provider-btn:focus-visible { outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ---------- About (home, first visit) ---------- */
.about { margin-top: 32px; text-align: left; background: var(--card); border-radius: 16px; padding: 18px 20px; box-shadow: var(--shadow); }
.about-title { font-size: 17px; margin: 0 0 6px; }
.about-list { list-style: none; padding: 0; margin: 12px 0; display: grid; gap: 8px; font-size: 14px; }
.onboarding { margin-top: 6vh; }

.rule { border: 0; border-top: 1px solid var(--border); margin: 28px 0 20px; }

/* ---------- Admin ---------- */
.admin-nav { display: flex; gap: 6px; margin: 4px 0 20px; flex-wrap: wrap; }
.admin-nav a {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}
.admin-nav a.active { background: var(--fill-teal); border-color: var(--fill-teal); color: #fff; }
.stat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 14px; }
@media (min-width: 760px) { .stat-grid { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--card); border-radius: 14px; padding: 16px; box-shadow: var(--shadow); }
.stat-num { font-size: 30px; font-weight: 800; line-height: 1.1; }
.stat-lbl { font-size: 13px; color: var(--muted); font-weight: 600; }
.stat-sub { font-size: 12px; color: var(--green); margin-top: 4px; }
.admin-card { background: var(--card); border-radius: 12px; padding: 14px 16px; margin-bottom: 10px; box-shadow: var(--shadow); }
.admin-card-head { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.admin-message { white-space: pre-wrap; margin: 8px 0 10px; font-size: 14px; }
.table-wrap { overflow-x: auto; background: var(--card); border-radius: 12px; box-shadow: var(--shadow); }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th, .admin-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.admin-table th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; white-space: nowrap; }
.admin-table tr:last-child td { border-bottom: 0; }