:root {
  color-scheme: light;
  --accent: #eb2027;
  --accent-strong: #c8151b;
  --bg: #f6f4f1;
  --card: rgba(255, 255, 255, 0.9);
  --text: #151515;
  --muted: #66605b;
  --border: rgba(21, 21, 21, 0.12);
  --shadow: 0 20px 60px rgba(21, 21, 21, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(235, 32, 39, 0.16), transparent 34%),
    radial-gradient(circle at top right, rgba(235, 32, 39, 0.08), transparent 28%),
    linear-gradient(180deg, #f8f7f4 0%, #efe9e2 100%);
}

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

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 64px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero {
  padding: 44px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -80px -110px auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(235, 32, 39, 0.18), rgba(235, 32, 39, 0));
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font: 700 0.75rem/1.2 Arial, Helvetica, sans-serif;
  color: var(--accent);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.lede {
  max-width: 58ch;
  margin-top: 18px;
  font: 400 1.08rem/1.65 Arial, Helvetica, sans-serif;
  color: var(--muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font: 700 0.95rem/1 Arial, Helvetica, sans-serif;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.button:hover,
.button:focus-visible,
.version-card:hover,
.version-card:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid var(--border);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.version-card {
  padding: 28px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.version-tag {
  align-self: flex-start;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(235, 32, 39, 0.12);
  color: var(--accent);
  font: 700 0.75rem/1 Arial, Helvetica, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.version-card h2 {
  margin-top: 18px;
  font-size: 1.7rem;
  line-height: 1.05;
}

.version-card p {
  margin-top: 10px;
  color: var(--muted);
  font: 400 1rem/1.6 Arial, Helvetica, sans-serif;
}

.viewer-shell {
  display: grid;
  gap: 20px;
}

.viewer-header {
  padding: 30px 32px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
}

.viewer-header h1 {
  max-width: none;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
}

.viewer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.viewer-card {
  padding: 24px;
}

.viewer-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.viewer-badge,
.viewer-status {
  font: 700 0.8rem/1 Arial, Helvetica, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.viewer-badge {
  color: var(--accent);
}

.viewer-status[data-state="error"] {
  color: #a13224;
}

.json-output {
  margin: 0;
  padding: 20px;
  border-radius: 20px;
  background: #111;
  color: #f5f5f5;
  overflow: auto;
  min-height: 56vh;
  font: 500 0.95rem/1.65 "Courier New", Courier, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 760px) {
  .shell {
    width: min(100% - 20px, 1120px);
    padding-top: 20px;
  }

  .hero,
  .viewer-header {
    padding: 24px;
  }

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

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