:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #14213d;
  --muted: #667085;
  --border: #dfe5ef;
  --accent: #5b5bd6;
  --accent-strong: #4747be;
  --accent-soft: #ececff;
  --correct: #15966f;
  --correct-soft: #e8f8f1;
  --wrong: #d94f5c;
  --wrong-soft: #fff0f1;
  --shadow: 0 12px 40px rgba(28, 40, 74, 0.08);
  --radius: 20px;
}

:root[data-theme="dark"] {
  --bg: #0d1117;
  --surface: #151b24;
  --surface-2: #10151d;
  --text: #eff3f8;
  --muted: #9aa7b5;
  --border: #2a3442;
  --accent: #8b8bf4;
  --accent-strong: #7777eb;
  --accent-soft: #272747;
  --correct: #3cc79a;
  --correct-soft: #14362d;
  --wrong: #ff7781;
  --wrong-soft: #3a1e22;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(91, 91, 214, 0.08), transparent 28rem),
    var(--bg);
  color: var(--text);
}

button {
  font: inherit;
}

.app-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 42px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent);
  color: white;
  font-weight: 800;
  letter-spacing: -0.03em;
  box-shadow: 0 8px 20px rgba(91, 91, 214, 0.24);
}

.brand h1 {
  font-size: 1rem;
  line-height: 1.1;
  margin: 0 0 3px;
}

.brand p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.icon-button,
.ghost-button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: 0.18s ease;
}

.icon-button {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}

.icon-button:hover,
.ghost-button:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.hero {
  max-width: 780px;
  margin-bottom: 30px;
}

.eyebrow {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h2 {
  margin: 14px 0 10px;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
  max-width: 760px;
}

.hero p {
  margin: 0;
  max-width: 720px;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--muted);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.category-card {
  padding: 21px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-align: left;
  color: var(--text);
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: 0.2s ease;
}

.category-card:hover {
  transform: translateY(-3px);
  border-color: rgba(91, 91, 214, 0.55);
}

.category-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  margin-bottom: 18px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 800;
}

.category-card h3 {
  margin: 0 0 7px;
  font-size: 1.05rem;
}

.category-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.9rem;
}

.info-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
}

.info-panel p {
  margin: 5px 0 0;
  color: var(--muted);
  line-height: 1.5;
  max-width: 760px;
  font-size: 0.9rem;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  border-radius: 50%;
  margin-right: 5px;
}

.dot.correct {
  background: var(--correct);
}

.dot.wrong {
  background: var(--wrong);
}

.quiz-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 13px;
}

.ghost-button {
  padding: 10px 13px;
  border-radius: 10px;
}

.quiz-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.quiz-meta span:first-child {
  color: var(--text);
}

.progress-track {
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  width: 0;
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
  transition: width 0.25s ease;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 18px 0;
}

.stat {
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  margin-bottom: 4px;
}

.stat strong {
  font-size: 1.05rem;
}

.flashcard {
  max-width: 800px;
  margin: 0 auto;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.flashcard-type {
  color: var(--accent-strong);
  font-weight: 800;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.flashcard-term {
  margin-top: 10px;
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.95;
  overflow-wrap: anywhere;
}

.flashcard-prompt {
  margin: 14px 0 20px;
  color: var(--muted);
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.answer-button {
  min-height: 64px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  line-height: 1.35;
  transition: 0.16s ease;
}

.answer-button:hover:not(:disabled) {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.answer-button.correct,
.answer-button.wrong {
  cursor: default;
}

.answer-button.correct {
  border-color: var(--correct);
  background: var(--correct-soft);
}

.answer-button.wrong {
  border-color: var(--wrong);
  background: var(--wrong-soft);
}

.result-panel {
  margin-top: 22px;
  padding: 18px;
  border-radius: 18px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.result-heading {
  display: flex;
  gap: 12px;
}

.result-icon {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 900;
}

.result-heading strong {
  display: block;
  margin-bottom: 4px;
}

.result-heading p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.examples {
  margin: 16px 0;
}

.examples-label {
  display: block;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 0.77rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.example-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.example-word {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  font-weight: 700;
}

.primary-button {
  border: 0;
  width: 100%;
  padding: 13px 16px;
  border-radius: 12px;
  background: var(--accent);
  color: white;
  font-weight: 800;
  cursor: pointer;
  transition: 0.18s ease;
}

.primary-button:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

@media (max-width: 860px) {
  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .info-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .legend {
    white-space: normal;
  }
}


@media (max-width: 700px) {
  .answer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .app-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 13px;
  }

  .topbar {
    margin-bottom: 26px;
  }

  .hero h2 {
    font-size: 2rem;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .stats-row {
    gap: 8px;
  }

  .stat {
    padding: 11px 12px;
  }

  .flashcard {
    border-radius: 22px;
  }

  .answer-grid {
    grid-template-columns: 1fr;
  }
}


/* Slutresultat */
.summary {
  width: 100%;
}

.summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.summary-header strong {
  display: block;
  font-size: 1rem;
}

.summary-header p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.summary-count {
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}

.summary-list {
  display: grid;
  gap: 8px;
}

.summary-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 11px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface);
}

.summary-status {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  font-weight: 900;
}

.summary-item.is-correct .summary-status {
  background: var(--correct-soft);
  color: var(--correct);
}

.summary-item.is-wrong .summary-status {
  background: var(--wrong-soft);
  color: var(--wrong);
}

.summary-term-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.summary-result {
  font-size: 0.74rem;
  font-weight: 800;
}

.summary-item.is-correct .summary-result {
  color: var(--correct);
}

.summary-item.is-wrong .summary-result {
  color: var(--wrong);
}

.summary-meaning {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.86rem;
}

.summary-examples {
  margin-top: 5px;
  color: var(--muted);
  font-size: 0.78rem;
}

 .summary-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}

.summary-actions .answer-button {
  text-align: center;
}

@media (max-width: 560px) {
  .summary-actions {
    grid-template-columns: 1fr;
  }

  .summary-header {
    align-items: flex-start;
    flex-direction: column;
  }
}

 .summary-actions button {
  width: auto;
  min-width: 130px;
  min-height: 42px;
  padding: 10px 18px;
}