:root {
  color-scheme: light;
  --ink: #1d1738;
  --muted: #655e76;
  --line: #e1ddea;
  --surface: #ffffff;
  --surface-soft: #f7f8fc;
  --purple: #6d35db;
  --purple-dark: #4e24ac;
  --purple-soft: #f4f0ff;
  --green: #087663;
  --green-soft: #edf8f5;
  --coral: #c84b3a;
  --coral-soft: #fff1ee;
  --yellow-soft: #fff9e5;
  --shadow: 0 12px 30px rgba(29, 23, 56, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-width: 0;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  background: var(--surface-soft);
  color: var(--ink);
  font-family: Nunito, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}
button,
input,
select { font: inherit; letter-spacing: 0; }
button,
a { -webkit-tap-highlight-color: transparent; }
a { color: var(--purple-dark); }
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 11000;
  padding: 10px 14px;
  transform: translateY(-150%);
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
}
.skip-link:focus { transform: none; }

.learning-site-header {
  display: flex;
  min-height: 72px;
  padding: 9px clamp(16px, 4vw, 58px);
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.learning-brand { flex: 0 0 206px; height: 52px; }
.learning-brand-viewport {
  position: relative;
  display: block;
  width: 206px;
  height: 52px;
  overflow: visible;
}
.learning-brand .verbygo-brand-image {
  position: absolute;
  top: calc(50% + 4px);
  left: -35px;
  width: 245px;
  max-width: none;
  height: auto;
  transform: translateY(-50%);
}
.learning-site-nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 7px 22px;
}
.learning-site-nav a {
  color: #463b62;
  font-size: .86rem;
  font-weight: 850;
  text-decoration: none;
}
.learning-site-nav a:hover,
.learning-site-nav a:focus-visible { color: var(--purple); text-decoration: underline; text-underline-offset: 4px; }

.learning-container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.learning-breadcrumbs { width: min(1160px, calc(100% - 40px)); margin: 0 auto; padding-top: 20px; }
.learning-breadcrumbs ol {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  color: var(--muted);
  font-size: .76rem;
  font-weight: 800;
}
.learning-breadcrumbs li { min-width: 0; }
.learning-breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 7px; color: #aaa3b8; }
.learning-breadcrumbs a { color: inherit; text-decoration: none; }
.learning-breadcrumbs a:hover,
.learning-breadcrumbs a:focus-visible { color: var(--purple-dark); text-decoration: underline; }

.learning-hero {
  position: relative;
  padding: clamp(38px, 7vw, 72px) 0 clamp(32px, 6vw, 60px) clamp(22px, 4vw, 46px);
  border-left: 4px solid var(--purple);
}
.learning-hero[data-surface="learn"] { border-left-color: var(--green); }
.learning-hero[data-surface="conjugator"] { border-left-color: #1678a1; }
.learning-hero[data-surface="meaning"] { border-left-color: #b56b00; }
.learning-hero[data-surface="fill-sentence"] { border-left-color: var(--coral); }
.learning-kicker,
.learning-eyebrow {
  margin: 0 0 8px;
  color: var(--green);
  font-size: .76rem;
  font-weight: 950;
  text-transform: uppercase;
}
.learning-hero h1 {
  max-width: 850px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(2.1rem, 6vw, 4.35rem);
  line-height: 1.02;
  letter-spacing: 0;
}
.learning-hero > p:not(.learning-kicker) {
  max-width: 760px;
  margin: 20px 0 0;
  color: #544c69;
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-weight: 700;
  line-height: 1.65;
}
.hero-context {
  display: flex;
  margin-top: 24px;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  color: #4c4267;
  font-size: .83rem;
  font-weight: 850;
}
.hero-context strong { color: var(--purple-dark); }

.learning-cluster-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.learning-cluster-nav a {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 56px;
  padding: 10px 8px;
  place-items: center;
  color: #554c6b;
  font-size: .83rem;
  font-weight: 850;
  text-align: center;
  text-decoration: none;
}
.learning-cluster-nav a + a { border-left: 1px solid var(--line); }
.learning-cluster-nav a[aria-current="page"] { color: var(--purple-dark); background: var(--purple-soft); }
.learning-cluster-nav a[aria-current="page"]::after {
  position: absolute;
  right: 12px;
  bottom: -1px;
  left: 12px;
  height: 3px;
  background: var(--purple);
  content: "";
}
.learning-cluster-nav a:hover,
.learning-cluster-nav a:focus-visible { background: #faf9fd; color: var(--purple-dark); }

.learning-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 300px);
  gap: clamp(36px, 6vw, 72px);
  padding-top: clamp(42px, 7vw, 76px);
  padding-bottom: 56px;
}
.learning-content,
.learning-aside { min-width: 0; }
.learning-section {
  padding: 0 0 42px;
  border-bottom: 1px solid var(--line);
}
.learning-section + .learning-section,
.learning-tool + .learning-section,
.learning-section + .learning-tool { margin-top: 42px; }
.learning-section h2,
.learning-tool h2,
.learning-aside h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  line-height: 1.22;
  letter-spacing: 0;
}
.learning-section p,
.learning-tool p,
.learning-section li {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.68;
}
.learning-section p { max-width: 72ch; }
.learning-section ol { padding-left: 22px; }
.learning-section li + li { margin-top: 8px; }
.compact-intro { padding-bottom: 30px; }

.pattern-equation {
  display: grid;
  width: min(480px, 100%);
  margin-top: 28px;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  color: var(--purple-dark);
  text-align: center;
}
.pattern-equation span {
  padding: 15px;
  border: 1px solid #d9d0ef;
  border-radius: 7px;
  background: #fff;
  font-size: 1.65rem;
  font-weight: 950;
}
.pattern-equation b { color: var(--green); font-size: 1.25rem; }
.pattern-equation small { grid-column: 1 / -1; color: var(--muted); font-weight: 800; }
.learning-table-wrap { max-width: 740px; margin-top: 24px; overflow-x: auto; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.learning-table-wrap table { width: 100%; border-collapse: collapse; min-width: 560px; }
.learning-table-wrap th,
.learning-table-wrap td { padding: 13px 15px; border-bottom: 1px solid var(--line); text-align: left; }
.learning-table-wrap thead th { background: var(--green-soft); color: #315a52; font-size: .78rem; text-transform: uppercase; }
.learning-table-wrap tbody th { color: #4b4263; font-size: .9rem; }
.learning-table-wrap tbody tr:last-child th,
.learning-table-wrap tbody tr:last-child td { border-bottom: 0; }

.learning-tool {
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid #d9d0ef;
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}
.tool-heading { max-width: 720px; }
.tool-heading > p:last-child { margin: 9px 0 0; }
.pronoun-picker {
  display: grid;
  margin-top: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.pronoun-picker button,
.binary-actions button,
.meaning-options button {
  min-width: 0;
  min-height: 50px;
  padding: 9px 12px;
  border: 1px solid #cfc7df;
  border-radius: 7px;
  background: #fff;
  color: #332b49;
  font-weight: 850;
  cursor: pointer;
}
.pronoun-picker button[aria-pressed="true"],
.pronoun-picker button:hover,
.pronoun-picker button:focus-visible,
.binary-actions button:hover,
.binary-actions button:focus-visible,
.meaning-options button:hover,
.meaning-options button:focus-visible { border-color: var(--purple); background: var(--purple-soft); color: var(--purple-dark); }
.pattern-result {
  display: grid;
  margin-top: 18px;
  padding: 20px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 5px 20px;
  border-left: 3px solid var(--green);
  background: var(--green-soft);
}
.pattern-result span { color: #4a635e; font-weight: 800; }
.pattern-result strong { color: #075e50; font-size: 1.8rem; }
.pattern-result p { grid-column: 1 / -1; margin: 0; color: #41635c; }

.verb-link-grid {
  display: grid;
  margin-top: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px 28px;
}
.verb-link-grid a {
  display: flex;
  min-width: 0;
  padding: 13px 0;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}
.verb-link-grid a:hover strong,
.verb-link-grid a:focus-visible strong { color: var(--purple); text-decoration: underline; }
.verb-link-grid span { min-width: 0; color: var(--muted); font-size: .86rem; text-align: right; }
.mistake-list { margin: 24px 0 0; padding: 0; list-style: none; }
.mistake-list li { display: grid; grid-template-columns: minmax(190px, .8fr) minmax(0, 1fr); gap: 20px; padding: 16px 0; border-top: 1px solid var(--line); }
.mistake-list li span { display: flex; flex-direction: column; gap: 4px; }
.mistake-list s { color: var(--coral); }
.mistake-list strong { color: var(--green); }
.mistake-list p { margin: 0; }

.contrast-strip,
.example-columns {
  display: grid;
  margin-top: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}
.contrast-strip span,
.example-columns > div { min-width: 0; padding: 15px; border: 1px solid var(--line); border-radius: 7px; background: #fff; color: #43385e; font-weight: 850; text-align: center; }
.contrast-strip b { color: var(--purple-dark); }
.example-columns strong,
.example-columns span { display: block; }
.example-columns span { margin-top: 4px; color: var(--muted); font-size: .84rem; }
.example-list { margin: 22px 0 0; padding: 0; list-style: none; }
.example-list li { display: flex; padding: 12px 0; align-items: baseline; justify-content: space-between; gap: 18px; border-bottom: 1px solid var(--line); }
.example-list span { color: var(--muted); font-size: .88rem; text-align: right; }
.rule-prompt,
.meaning-prompt { margin: 26px 0 18px; color: var(--ink) !important; font-size: 1.2rem !important; font-weight: 900; }
.binary-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }

.tool-control-grid { display: grid; margin-top: 25px; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.tool-control-grid label,
.answer-label { display: grid; gap: 7px; color: #4a4260; font-size: .8rem; font-weight: 900; }
select,
.answer-row input,
.sentence-row input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid #bcb4cf;
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  outline: none;
}
select:focus,
.answer-row input:focus,
.sentence-row input:focus { border-color: var(--purple); box-shadow: 0 0 0 3px rgba(109, 53, 219, .15); }
.conjugation-prompt {
  display: flex;
  min-height: 80px;
  margin: 18px 0;
  padding: 17px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid #c8ded9;
  border-radius: 7px;
  background: var(--green-soft);
  color: #315a52;
  font-size: 1.1rem;
  font-weight: 850;
}
.conjugation-prompt strong { color: #075e50; font-size: 1.45rem; }
.answer-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; margin-top: 8px; }
.tool-primary,
.tool-secondary {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 7px;
  font-weight: 900;
  cursor: pointer;
}
.tool-primary { border: 1px solid var(--purple); background: var(--purple); color: #fff; }
.tool-secondary { border: 1px solid #bdb4d2; background: #fff; color: var(--purple-dark); }
.tool-primary:hover,
.tool-primary:focus-visible { background: var(--purple-dark); }
.tool-secondary:hover,
.tool-secondary:focus-visible { border-color: var(--purple); background: var(--purple-soft); }
.accent-toolbar { display: flex; margin-top: 10px; flex-wrap: wrap; gap: 6px; }
.accent-toolbar button {
  width: 38px;
  height: 36px;
  padding: 0;
  border: 1px solid #d4cce5;
  border-radius: 6px;
  background: #fff;
  color: var(--purple-dark);
  font-weight: 900;
  cursor: pointer;
}
.accent-toolbar button:hover,
.accent-toolbar button:focus-visible { border-color: var(--purple); background: var(--purple-soft); }
.tool-feedback { min-height: 27px; margin: 14px 0 0; font-weight: 850; }
.tool-feedback.is-correct { color: var(--green); }
.tool-feedback.is-incorrect { color: var(--coral); }
.tool-actions { display: flex; margin-top: 12px; align-items: center; flex-wrap: wrap; gap: 9px; }
.tool-actions strong { margin-left: auto; color: #554c6b; font-size: .85rem; }
.inline-verb-list { display: flex; margin-top: 18px; flex-wrap: wrap; gap: 8px 18px; }
.inline-verb-list a { color: var(--purple-dark); font-weight: 850; text-underline-offset: 3px; }

.meaning-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.meaning-options button { min-height: 58px; }
.meaning-options button.is-correct { border-color: var(--green); background: var(--green-soft); color: var(--green); }
.meaning-options button.is-incorrect { border-color: var(--coral); background: var(--coral-soft); color: var(--coral); }
.meaning-options button:disabled { cursor: default; opacity: 1; }

.sentence-list { display: grid; margin-top: 24px; gap: 14px; }
.sentence-item { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 10px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.sentence-number { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 50%; background: var(--purple-soft); color: var(--purple-dark); font-size: .78rem; font-weight: 950; }
.sentence-item p { margin: 0 0 8px; color: #4d4561; font-size: .88rem; line-height: 1.45; }
.sentence-row { display: flex; min-width: 0; align-items: center; flex-wrap: wrap; gap: 5px; color: var(--ink); font-weight: 800; }
.sentence-row input { width: min(180px, 100%); min-height: 42px; }
.sentence-cue { color: var(--muted); font-size: .78rem; font-style: italic; }
.sentence-feedback { grid-column: 2; margin: 0; padding: 0 0 0 2px; color: var(--muted); font-size: .85rem; line-height: 1.5; }
.sentence-item.is-correct .sentence-number { background: var(--green-soft); color: var(--green); }
.sentence-item.is-incorrect .sentence-number { background: var(--coral-soft); color: var(--coral); }
.sentence-item.is-correct input { border-color: var(--green); }
.sentence-item.is-incorrect input { border-color: var(--coral); }

.learning-aside { align-self: start; }
.learning-aside section { padding: 20px 0; border-top: 1px solid var(--line); }
.learning-aside h2 { font-size: 1.12rem; }
.learning-aside p { color: var(--muted); font-size: .9rem; line-height: 1.55; }
.aside-links { display: grid; margin-top: 12px; }
.aside-links a { display: grid; padding: 10px 0; grid-template-columns: auto minmax(0, 1fr); gap: 9px; border-bottom: 1px solid var(--line); color: var(--purple-dark); font-size: .86rem; font-weight: 900; text-decoration: none; }
.aside-links a span { min-width: 0; color: var(--muted); font-weight: 700; text-align: right; }
.aside-links a:hover,
.aside-links a:focus-visible { text-decoration: underline; }
.creator-note { border-top-color: #c8ded9 !important; }
.creator-note strong { color: var(--ink); }

.learning-next {
  display: flex;
  margin-bottom: 46px;
  padding: 22px 0;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.learning-next > span { color: #514767; font-weight: 900; }
.learning-next div { display: flex; flex-wrap: wrap; gap: 8px 17px; }
.learning-next a { color: var(--purple-dark); font-size: .86rem; font-weight: 900; text-underline-offset: 3px; }

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible { outline: 3px solid rgba(109, 53, 219, .23); outline-offset: 2px; }
[hidden] { display: none !important; }

@media (max-width: 860px) {
  .learning-layout { grid-template-columns: 1fr; }
  .learning-aside { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; }
  .creator-note { grid-column: 1 / -1; }
  .learning-cluster-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .learning-cluster-nav a:nth-child(4) { border-left: 0; border-top: 1px solid var(--line); }
  .learning-cluster-nav a:nth-child(5) { border-top: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .learning-site-header { min-height: 66px; padding-inline: 13px; gap: 9px; }
  .learning-brand { flex-basis: 145px; width: 145px; height: 46px; }
  .learning-brand-viewport { width: 145px; height: 46px; }
  .learning-brand .verbygo-brand-image { left: -31px; width: 195px; }
  .learning-site-nav { gap: 5px 11px; }
  .learning-site-nav a { font-size: .72rem; }
  .learning-site-nav a:nth-child(2) { display: none; }
  .learning-container,
  .learning-breadcrumbs { width: min(100% - 28px, 1160px); }
  .learning-breadcrumbs { padding-top: 15px; }
  .learning-hero { padding: 34px 0 30px 18px; }
  .learning-hero h1 { font-size: clamp(2rem, 12vw, 3.2rem); }
  .learning-hero > p:not(.learning-kicker) { margin-top: 15px; font-size: .98rem; }
  .learning-cluster-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .learning-cluster-nav a { min-height: 52px; font-size: .78rem; }
  .learning-cluster-nav a:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .learning-cluster-nav a:nth-child(4) { border-left: 1px solid var(--line); }
  .learning-cluster-nav a:nth-child(5) { grid-column: 1 / -1; border-left: 0; }
  .learning-layout { gap: 30px; padding-top: 38px; }
  .learning-section { padding-bottom: 34px; }
  .learning-section + .learning-section,
  .learning-tool + .learning-section,
  .learning-section + .learning-tool { margin-top: 34px; }
  .learning-tool { padding: 20px 15px; }
  .pronoun-picker { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .verb-link-grid,
  .contrast-strip,
  .example-columns,
  .tool-control-grid,
  .meaning-options { grid-template-columns: 1fr; }
  .mistake-list li { grid-template-columns: 1fr; gap: 8px; }
  .example-list li { align-items: flex-start; flex-direction: column; gap: 4px; }
  .example-list span { text-align: left; }
  .answer-row { grid-template-columns: 1fr; }
  .answer-row .tool-primary { width: 100%; }
  .tool-actions { align-items: stretch; }
  .tool-actions button { flex: 1 1 130px; }
  .tool-actions strong { width: 100%; margin: 2px 0 0; text-align: left; }
  .learning-aside { grid-template-columns: 1fr; }
  .creator-note { grid-column: auto; }
  .sentence-item { grid-template-columns: 28px minmax(0, 1fr); }
  .sentence-row { align-items: stretch; flex-direction: column; }
  .sentence-row input { width: 100%; }
  .learning-next { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 360px) {
  .learning-site-nav a:nth-child(3) { display: none; }
  .learning-brand { flex-basis: 150px; }
  .pattern-result { grid-template-columns: 1fr; }
  .pattern-result p { grid-column: auto; }
  .binary-actions { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}