/* ===== Custom properties ===== */
:root {
  --color-text: #1a1a2e;
  --color-bg: #ffffff;
  --color-accent: #0055cc;
  --color-accent-hover: #003d99;
  --color-hero-bg: #1a1a2e;
  --color-hero-text: #ffffff;
  --color-muted: #555;
  --color-border: #ddd;
  --color-code-bg: #f5f5f5;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --max-width: 64rem;
  --radius: 0.5rem;
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ===== Base ===== */
html {
  scroll-behavior: smooth;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== Focus ===== */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== Skip link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--color-accent);
  color: var(--color-hero-text);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  z-index: 100;
}

.skip-link:focus {
  top: var(--space-xs);
}

/* ===== Nav ===== */
header {
  padding: 0 var(--space-md);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) 0;
}

.site-nav .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: inherit;
  text-decoration: none;
}

.site-nav .logo img {
  border-radius: 5px;
  width: 40px;
  height: 40px;
  border: 1px solid #333;
}

.site-nav ul {
  display: flex;
  gap: var(--space-sm);
  list-style: none;
}

.site-nav a {
  color: inherit;
  text-decoration: none;
  padding: var(--space-xs);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-nav a:hover {
  text-decoration: underline;
}

.site-nav a[aria-current="page"] {
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.nav-short {
  display: none;
}

@media (max-width: 32rem) {
  header {
    padding: 0 var(--space-sm);
  }

  .site-nav {
    padding: var(--space-xs) 0;
    font-size: 0.875rem;
  }

  .site-nav ul {
    gap: 0;
  }

  .site-nav a {
    padding: var(--space-xs) 0.375rem;
  }

  .nav-full {
    display: none;
  }

  .nav-short {
    display: inline;
  }
}

/* ===== Hero ===== */
.hero {
  background: var(--color-hero-bg);
  color: var(--color-hero-text);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.hero p {
  font-size: 1.25rem;
  max-width: 40rem;
  margin: 0 auto var(--space-md);
  opacity: 0.9;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  justify-content: center;
  gap: 0 var(--space-md);
  margin-bottom: var(--space-md);
}

.hero-stats dt {
  grid-row: 1;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
}

.hero-stats dd {
  grid-row: 2;
  font-size: 0.875rem;
  opacity: 0.8;
}

.hero-screenshot {
  margin-top: var(--space-md);
}

.hero-screenshot img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

@media (min-width: 48rem) {
  .hero {
    text-align: left;
  }

  .hero-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--space-lg);
  }

  .hero p {
    margin-left: 0;
    margin-right: 0;
  }

  .hero-stats {
    justify-content: start;
  }

  .hero-screenshot {
    margin-top: 0;
  }

  .hero-screenshot img {
    max-height: 500px;
    width: auto;
  }
}

.cta {
  display: flex;
  width: fit-content;
  margin-inline: auto;
  align-items: center;
  gap: var(--space-xs);
  background: var(--color-accent);
  color: var(--color-hero-text);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  min-height: 44px;
}

@media (min-width: 48rem) {
  .cta {
    margin-inline: 0;
  }
}

.cta:hover {
  background: var(--color-accent-hover);
}

/* ===== Section ===== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
}

.section h2 {
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

/* ===== Feature cards ===== */
.features {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

@media (min-width: 48rem) {
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--color-muted);
}

/* ===== Quick start ===== */
.quickstart-steps {
  margin-top: var(--space-sm);
  padding-left: 1.5rem;
  font-size: 1.125rem;
  line-height: 1.8;
}

.quickstart-steps a {
  color: var(--color-accent);
}

/* ===== Code block ===== */
.code-block {
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  overflow-x: auto;
  margin-top: var(--space-sm);
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ===== Embed ===== */
.embed-container {
  margin-top: var(--space-sm);
}

.embed-container iframe {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-md);
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* ===== Benchmark stats ===== */
.bench-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  margin: var(--space-md) 0;
  padding: 0;
  list-style: none;
}

.bench-stats div {
  text-align: center;
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-code-bg);
}

.bench-stats dt {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-accent);
}

.bench-stats dd {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-top: 0.25rem;
}

@media (max-width: 36rem) {
  .bench-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Benchmark speed bars ===== */
.bench-bars {
  margin: var(--space-sm) 0 var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.bench-bar {
  display: grid;
  grid-template-columns: 10rem 1fr auto;
  align-items: center;
  gap: var(--space-xs);
}

.bench-bar-label {
  font-weight: 600;
  font-size: 0.875rem;
  text-align: right;
}

.bench-bar-label code {
  font-family: var(--font-mono);
  font-weight: 600;
}

.bench-bar-track {
  height: 2rem;
  background: var(--color-code-bg);
  border-radius: var(--radius);
  overflow: hidden;
}

.bench-bar-fill {
  height: 100%;
  border-radius: var(--radius);
}

.bench-bar-fill--axe {
  background: var(--color-muted);
}

.bench-bar-fill--al {
  background: var(--color-accent);
}

.bench-bar-value {
  font-size: 0.875rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  min-width: 4rem;
}

@media (max-width: 36rem) {
  .bench-bar {
    grid-template-columns: 7rem 1fr auto;
  }

  .bench-bar-label {
    font-size: 0.75rem;
  }
}

/* ===== Benchmark concordance table ===== */
.bench-table-wrap {
  overflow-x: auto;
  margin: var(--space-sm) 0 var(--space-md);
  -webkit-overflow-scrolling: touch;
}

.bench-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.bench-table th,
.bench-table td {
  padding: 0.625rem var(--space-sm);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.bench-table th {
  font-weight: 600;
  background: var(--color-code-bg);
  position: sticky;
  top: 0;
}

.bench-table th:not(:first-child),
.bench-table td:not(:first-child) {
  text-align: right;
}

.bench-table tbody tr:nth-child(even) {
  background: var(--color-code-bg);
}


/* ===== Benchmark takeaways ===== */
.bench-takeaways {
  margin: var(--space-sm) 0 var(--space-md);
  padding-left: 1.5rem;
  line-height: 1.8;
}

.bench-takeaways li + li {
  margin-top: var(--space-xs);
}

.bench-methodology {
  margin: var(--space-sm) 0 var(--space-md);
  padding-left: 1.5rem;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-muted);
}

.bench-methodology strong {
  color: var(--color-text);
}

.bench-methodology a {
  color: var(--color-accent);
}

.bench-methodology li + li {
  margin-top: 0.25rem;
}

.bench-notebook-link {
  margin-top: var(--space-md);
}

.bench-notebook-link a {
  color: var(--color-accent);
  font-weight: 600;
}

/* ===== Prose (long-form content) ===== */
.prose h2 {
  margin-top: var(--space-md);
}

.prose p,
.prose ul,
.prose ol,
.prose table,
.prose pre {
  margin-top: var(--space-sm);
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
}

.prose li + li {
  margin-top: var(--space-xs);
}

.prose a {
  color: var(--color-accent);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-code-bg);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

.prose pre code {
  background: none;
  padding: 0;
}

/* ===== Not found ===== */
.not-found {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
}

.not-found h1 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.not-found a {
  color: var(--color-accent);
}