:root {
  --green-900: #003c18;
  --green-800: #00531f;
  --green-700: #08702d;
  --green-600: #15903b;
  --green-100: #edf8ef;
  --gold: #ffc52f;
  --ink: #111827;
  --muted: #4b5563;
  --line: #dfe5df;
  --panel: #ffffff;
  --page: #f7faf7;
  --shadow: 0 14px 38px rgba(15, 23, 42, 0.08);
  --content-max: 1180px;
  --page-gutter: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

button {
  font: inherit;
}

.tool-ui {
  width: calc(100% - (var(--page-gutter) * 2));
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--content-max));
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 24px 0 28px;
}

.hero {
  overflow: hidden;
  border-radius: 10px;
  background: #061b14;
  box-shadow: var(--shadow);
}

.hero img {
  display: block;
  width: 100%;
  height: auto;
}

.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;
}

.feature-bar {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 26px 0 40px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-bar div {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 66px;
  padding: 12px;
  border-right: 1px solid var(--line);
  font-weight: 700;
  text-align: center;
}

.feature-bar div:last-child {
  border-right: 0;
}

.feature-bar span,
.fact-toggle span span {
  color: var(--green-700);
  font-size: 1.45rem;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 24px;
  align-items: start;
}

.main-column,
.side-column {
  display: grid;
  gap: 20px;
}

.quiz-card,
.panel,
.fact-box {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 0 26px;
  background: linear-gradient(135deg, var(--green-800), var(--green-900));
  color: #fff;
}

.card-head h2,
.score-card h2,
.panel h2 {
  margin: 0;
  font-size: 1.25rem;
}

.question-body {
  padding: 28px 26px 26px;
}

.question-text {
  margin: 0 0 26px;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  font-weight: 800;
  line-height: 1.25;
}

.answers {
  display: grid;
  gap: 16px;
}

.answer {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  min-height: 64px;
  padding: 14px 20px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.answer:hover,
.answer:focus-visible {
  border-color: #8fcf9e;
  background: #f5fbf6;
  outline: none;
}

.answer .radio {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  border: 2px solid #b7c0b9;
  border-radius: 50%;
}

.answer.selected {
  border-color: #9ca3af;
  background: #f8fafc;
}

.answer.selected .radio {
  border-color: #4b5563;
  box-shadow: inset 0 0 0 5px #fff;
  background: #4b5563;
}

.answer.correct {
  border-color: #1f9d49;
  background: #e9f8ed;
}

.answer.correct .radio {
  border-color: var(--green-700);
  background: var(--green-700);
}

.answer.incorrect {
  border-color: #dc6262;
  background: #fff0f0;
}

.answer.incorrect .radio {
  border-color: #b42318;
  background: #b42318;
}

.answer:disabled {
  cursor: default;
}

.result-message {
  min-height: 28px;
  margin-top: 16px;
  font-weight: 800;
}

.result-message.ok {
  color: var(--green-700);
}

.result-message.no {
  color: #b42318;
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 12px;
}

.primary-button,
.secondary-button {
  min-height: 56px;
  border: 0;
  border-radius: 7px;
  padding: 0 28px;
  font-weight: 800;
  cursor: pointer;
}

.primary-button {
  background: linear-gradient(135deg, #26a447, var(--green-700));
  color: #fff;
}

.secondary-button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--green-800);
}

.primary-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.panel {
  padding: 22px 26px;
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(10, 52px);
  gap: 12px 16px;
  margin-top: 18px;
}

.nav-button {
  width: 52px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
}

.nav-button.current {
  border-color: var(--green-700);
  background: var(--green-700);
  color: #fff;
}

.nav-button.answered:not(.current) {
  border-color: #a8d8b1;
  background: #eef9f0;
}

.fact-box {
  padding: 0;
}

.fact-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 56px;
  border: 0;
  background: linear-gradient(90deg, #edf8ef, #f9fdf9);
  color: var(--green-800);
  padding: 0 24px;
  cursor: pointer;
}

.fact-content {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 26px;
  border-top: 1px solid var(--line);
}

.fact-content img {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: 6px;
  background: #0a1512;
}

.fact-content p {
  margin: 0;
}

.fact-box.collapsed .fact-content {
  display: none;
}

.score-card {
  padding: 0 24px 24px;
  overflow: hidden;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--green-800), var(--green-900));
  color: #fff;
  text-align: center;
  box-shadow: var(--shadow);
}

.score-card h2 {
  margin: 0 -24px 22px;
  padding: 20px 16px;
  background: rgba(0, 0, 0, 0.12);
}

.score-number {
  font-size: 4.4rem;
  font-weight: 900;
  line-height: 1;
}

.score-card strong {
  display: block;
  margin: 10px 0 2px;
  font-size: 1.8rem;
}

.guide {
  display: grid;
  gap: 12px;
}

.guide div {
  display: grid;
  grid-template-columns: 34px 64px 1fr;
  gap: 10px;
  align-items: center;
}

.rank {
  font-size: 1.6rem;
}

.gray { color: #80858c; }
.green { color: #4fb647; }
.blue { color: #1687d9; }
.purple { color: #8a5bd7; }
.orange { color: #f08b15; }
.gold { color: var(--gold); }

.share-panel p {
  margin: 6px 0 16px;
  color: var(--muted);
}

.share,
.copy {
  display: block;
  width: 100%;
  min-height: 48px;
  margin-top: 10px;
  border: 0;
  border-radius: 6px;
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.facebook { background: #2d56a1; }
.twitter { background: #1da1f2; }
.whatsapp { background: #24c45a; }

.copy {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.all-questions {
  margin-top: 24px;
}

.all-questions ol {
  columns: 3;
  column-gap: 52px;
  padding-left: 20px;
  margin: 18px 0 0;
}

.all-questions li {
  break-inside: avoid;
  margin: 0 0 14px;
  padding-left: 8px;
}

.all-questions li.current-question {
  color: var(--green-800);
  font-weight: 800;
}

.seo-content {
  width: calc(100% - (var(--page-gutter) * 2));
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--content-max));
  max-width: var(--content-max);
  margin: 0 auto 30px;
  padding: 28px 0;
  color: #202938;
}

.seo-content h2,
.seo-content h3 {
  margin: 0 0 10px;
}

.seo-content p {
  margin: 0 0 14px;
  max-width: 900px;
}

.site-footer {
  background: linear-gradient(135deg, var(--green-800), var(--green-900));
  color: #fff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: calc(100% - (var(--page-gutter) * 2));
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--content-max));
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 20px 0;
}

.footer-inner div {
  display: grid;
  gap: 2px;
}

.footer-inner p {
  margin: 0;
}

@media (max-width: 980px) {
  .tool-ui {
    width: calc(100% - 20px);
  }

  .feature-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-bar div {
    border-bottom: 1px solid var(--line);
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .question-grid {
    grid-template-columns: repeat(5, 52px);
  }

  .all-questions ol {
    columns: 2;
  }
}

@media (max-width: 620px) {
  .tool-ui {
    width: 100%;
    padding-top: 0;
  }

  .hero {
    border-radius: 0;
  }

  .feature-bar,
  .app-shell,
  .all-questions {
    width: calc(100% - 20px);
    margin-left: auto;
    margin-right: auto;
  }

  .feature-bar {
    grid-template-columns: 1fr;
    margin-top: 16px;
    margin-bottom: 24px;
  }

  .feature-bar div {
    justify-content: flex-start;
    min-height: 54px;
  }

  .question-body,
  .panel,
  .fact-content {
    padding: 20px;
  }

  .card-head {
    padding: 0 20px;
  }

  .actions {
    flex-direction: column-reverse;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .question-grid {
    grid-template-columns: repeat(5, minmax(42px, 1fr));
    gap: 10px;
  }

  .nav-button {
    width: 100%;
  }

  .all-questions ol {
    columns: 1;
  }

  .site-footer {
    padding: 0 10px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    width: 100%;
  }
}