:root {
  --canvas: #fdfcfc;
  --ink: #201d1d;
  --ink-deep: #0f0000;
  --surface-soft: #f8f7f7;
  --hairline: rgba(15, 0, 0, 0.12);
  --hairline-strong: #646262;
  --body: #424245;
  --mute: #646262;
  --surface-dark: #201d1d;
  --on-dark: #fdfcfc;
  --success: #30d158;
  --warning: #ff9f0a;
  --danger: #ff3b30;
  --font: "Berkeley Mono", "JetBrains Mono", "IBM Plex Mono", "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  background: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.wordmark {
  font-size: 11px;
  line-height: 1.2;
  margin: 0 0 8px;
  white-space: pre;
}

.subtitle {
  font-size: 14px;
  color: var(--mute);
  margin: 0 0 8px;
}

.nav {
  font-size: 14px;
  color: var(--body);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
  margin: 0 0 48px;
}

.warning-banner {
  border: 1px solid var(--hairline);
  background: var(--surface-soft);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--body);
  margin-bottom: 48px;
  border-radius: 4px;
}

.hero-headline {
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 16px;
}

.hero-body {
  color: var(--body);
  margin: 0 0 32px;
}

textarea {
  width: 100%;
  background: var(--surface-soft);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: 12px;
  font-family: var(--font);
  font-size: 16px;
  color: var(--ink);
  resize: vertical;
  min-height: 80px;
}

textarea:focus {
  outline: none;
  background: var(--canvas);
  border-color: var(--ink);
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font);
  font-size: 16px;
  font-weight: 500;
  line-height: 2;
  padding: 4px 20px;
  border-radius: 4px;
  cursor: pointer;
  border: none;
  box-shadow: none;
}

.btn-primary {
  background: var(--ink);
  color: var(--canvas);
}

.btn-primary:hover {
  background: var(--ink-deep);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--canvas);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
}

.btn-secondary:hover {
  background: var(--surface-soft);
}

.section-header {
  font-size: 16px;
  font-weight: 700;
  padding: 16px 0 8px;
  border-bottom: 1px solid var(--hairline);
  margin: 48px 0 16px;
}

.list-row {
  color: var(--body);
  margin: 8px 0;
}

.meta {
  font-size: 14px;
  color: var(--mute);
}

.terminal {
  background: var(--surface-dark);
  color: var(--on-dark);
  padding: 16px;
  border-radius: 4px;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.status-ok { color: var(--success); }
.status-warn { color: var(--warning); }
.status-err { color: var(--danger); }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--hairline);
  margin: 16px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--hairline);
}

th {
  font-weight: 700;
  background: var(--surface-soft);
}

.demo-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.demo-list button {
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 14px;
  color: var(--ink);
  text-decoration: underline;
  cursor: pointer;
  padding: 4px 0;
}

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

#download-btn {
  margin-top: 12px;
}

#results-chart {
  max-width: 100%;
}