/* Basic reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
p,
figure,
figcaption,
ul,
ol,
fieldset {
  margin: 0;
}

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

button,
input {
  font: inherit;
}

body {
  min-width: 320px;
  color: #000;
  background: #fff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

a {
  color: #000;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid #000;
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.5rem;
  color: #fff;
  background: #000;
}

.skip-link:focus {
  top: 1rem;
}

.container {
  width: min(100% - 2rem, 1000px);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid #000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.wordmark {
  font-weight: bold;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0;
  list-style: none;
}

.hero {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  padding-block: 3rem;
}

.hero-copy,
.hero-art {
  flex: 1 1 50%;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  margin-top: 0.5rem;
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.25rem;
}

.eyebrow,
.section-number,
.result-label {
  font-size: 0.85rem;
  font-weight: bold;
}

.hero-intro,
.section-heading > p:last-child,
.finder-intro > p:last-child {
  margin-top: 1rem;
}

.hero-actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-block;
  padding: 0.6rem 1rem;
  border: 1px solid #000;
  color: #000;
  background: #fff;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.button:hover {
  color: #fff;
  background: #000;
}

.hero-art {
  min-width: 0;
  padding: 1rem;
  border: 1px solid #000;
}

.hero-art figcaption {
  margin-top: 0.5rem;
  font-size: 0.8rem;
}

.section {
  padding-block: 3rem;
  border-top: 1px solid #ccc;
}

.intro-grid,
.finder-layout,
.resources,
.section-heading-wide {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
}

.intro-grid > *,
.finder-layout > *,
.resources > *,
.section-heading-wide > * {
  flex: 1 1 50%;
}

.prose p + p,
.note,
.section-heading h2,
.finder-intro h2 {
  margin-top: 1rem;
}

.note {
  padding-left: 1rem;
  border-left: 3px solid #000;
}

.section-heading {
  margin-bottom: 2rem;
}

.concept-grid,
.book-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.concept-card,
.book-card {
  flex: 1 1 280px;
  padding: 1rem;
  border: 1px solid #000;
}

.concept-mark {
  font-weight: bold;
}

.concept-card h3,
.concept-card p {
  margin-top: 0.75rem;
}

.book-grid {
  padding: 0;
  list-style-position: inside;
}

.book-card article {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.book-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.book-meta span {
  padding: 0.2rem 0.4rem;
  border: 1px solid #000;
  font-size: 0.75rem;
}

.author {
  font-weight: bold;
}

.book-card article > a {
  margin-top: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table caption {
  margin-bottom: 1rem;
  font-weight: bold;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 0.75rem;
  border: 1px solid #000;
  text-align: left;
  vertical-align: top;
}

.level {
  font-weight: bold;
}

.finder-panel {
  padding: 1rem;
  border: 1px solid #000;
}

fieldset {
  padding: 0;
  border: 0;
}

fieldset + fieldset {
  margin-top: 1.5rem;
}

legend {
  margin-bottom: 0.5rem;
  font-weight: bold;
}

.choice,
.choice-grid {
  display: flex;
}

.choice {
  align-items: flex-start;
  gap: 0.5rem;
  padding-block: 0.4rem;
}

.choice-grid {
  flex-wrap: wrap;
  gap: 0.75rem;
}

.choice-compact {
  flex: 1 1 140px;
}

.choice span,
.choice small {
  display: block;
}

.form-error {
  margin-top: 1rem;
  padding: 0.75rem;
  border: 1px solid #000;
  font-weight: bold;
}

.button-submit {
  width: 100%;
  margin-top: 1.5rem;
}

.recommendation {
  padding: 1rem;
  border: 1px solid #000;
}

.recommendation > * + * {
  margin-top: 0.75rem;
}

.resource-list a {
  display: block;
}

.resource-list a + a {
  margin-top: 1rem;
}

.resource-list small {
  display: block;
}

.site-footer {
  padding-block: 2rem;
  border-top: 1px solid #000;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
}

.footer-content p {
  flex: 1 1 50%;
}

[hidden] {
  display: none !important;
}

@media (max-width: 600px) {
  .nav,
  .hero,
  .intro-grid,
  .finder-layout,
  .resources,
  .section-heading-wide,
  .footer-content,
  .hero-actions,
  .result-actions {
    flex-direction: column;
  }

  .nav {
    align-items: flex-start;
  }

  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }

  .hero {
    padding-block: 2rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .button,
  .hero-actions,
  .result-actions {
    width: 100%;
  }

  .comparison-table,
  .comparison-table tbody,
  .comparison-table tr,
  .comparison-table th,
  .comparison-table td {
    display: block;
    width: 100%;
  }

  .comparison-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .comparison-table tr {
    margin-bottom: 1rem;
    border: 1px solid #000;
  }

  .comparison-table th,
  .comparison-table td {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border: 0;
    border-bottom: 1px solid #ccc;
    text-align: right;
  }

  .comparison-table tr > :last-child {
    border-bottom: 0;
  }

  .comparison-table th::before,
  .comparison-table td::before {
    flex: 0 0 5rem;
    content: attr(data-label);
    font-weight: bold;
    text-align: left;
  }

  .choice-grid {
    flex-direction: column;
  }

  .choice-grid .choice-compact {
    flex: 0 1 auto;
  }
}

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