:root {
  color-scheme: light;
  --bg: #eef2ff;
  --surface: rgba(255, 255, 255, 0.9);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: rgba(15, 23, 42, 0.08);
  --brand: #7c3aed;
  --brand-soft: rgba(124, 58, 237, 0.12);
  --shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.08), rgba(124, 58, 237, 0.16));
  color: var(--text);
  font: 15px/1.6 ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  transition: background 180ms ease;
}

a {
  color: inherit;
  text-decoration: none;
}

code,
pre {
  font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

#app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 18px 72px;
}

.layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
}

.sidebar,
.panel,
.playground,
.hero {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.sidebar {
  position: sticky;
  top: 20px;
  align-self: start;
  padding: 20px;
  border-radius: 24px;
}

.brand {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.brand h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.brand p,
.page__head p,
.hero p,
.playground__header p {
  margin: 0;
  color: var(--muted);
}

.nav {
  display: grid;
  gap: 8px;
}

.nav a {
  padding: 10px 12px;
  border-radius: 14px;
  color: var(--muted);
}

.nav a:hover,
.nav a:focus-visible {
  background: var(--brand-soft);
  color: var(--brand);
  outline: none;
}

.content {
  display: grid;
  gap: 24px;
}

.hero,
.panel,
.playground {
  border-radius: 28px;
  padding: 24px;
}

.hero {
  display: grid;
  gap: 14px;
  background:
    radial-gradient(circle at top right, rgba(124, 58, 237, 0.16), transparent 34%),
    var(--surface);
}

.hero h2 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero__meta span {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  color: var(--muted);
}

.panel {
  display: grid;
  gap: 14px;
}

.page__head {
  display: grid;
  gap: 6px;
}

.page__head h3,
.snippet h3 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.03em;
}

.panel p,
.panel li {
  color: var(--muted);
}

.panel ul {
  margin: 0;
  padding-left: 18px;
}

pre {
  margin: 0;
  padding: 16px;
  overflow: auto;
  border-radius: 18px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  background: #0f172a;
  color: #e2e8f0;
}

.playground {
  display: grid;
  gap: 18px;
}

.playground__grid {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.playground__panel,
.playground__preview {
  display: grid;
  gap: 14px;
  align-content: start;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--muted);
}

.field input[type="text"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--text);
}

.field--inline {
  display: flex;
  align-items: center;
  gap: 10px;
}

.button {
  border: 0;
  border-radius: 14px;
  background: var(--brand);
  color: #ffffff;
  padding: 12px 16px;
  font-weight: 700;
  cursor: pointer;
}

.preview-card,
.preview-meta,
.snippet {
  padding: 16px;
  border-radius: 20px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
}

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

.preview-meta {
  display: grid;
  gap: 12px;
}

.preview-swatch {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  border: 1px solid var(--line);
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

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