:root {
  color-scheme: light;
  --text: #111318;
  --muted: #5a646e;
  --background: #f6f7f9;
  --border: #cfd5db;
  --button-bg: #0f1114;
  --button-text: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.5;
}

h1,
h2,
p {
  margin: 0 0 0.75rem;
}

dl,
dd,
ul {
  margin: 0;
}

.container {
  width: min(740px, 90vw);
  margin: 0 auto;
}

.site-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  max-width: 28rem;
}

.subheadline {
  color: var(--muted);
  max-width: 30rem;
  font-size: 0.95rem;
  font-weight: 400;
}

.primary-button {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--button-bg);
  border-radius: 1px;
  background: var(--button-bg);
  color: var(--button-text);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  text-decoration: none;
}

.primary-button:focus-visible {
  outline: 2px solid var(--muted);
  outline-offset: 2px;
}

.dimensions {
  padding: 2rem 0 2.5rem;
}

.dimensions h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 1rem;
}

.dimensions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.dimensions-grid div {
  padding: 0.75rem 0.9rem;
  border: 2px solid var(--border);
  background: #ffffff;
}

.dimensions-grid dt {
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 0.25rem;
}

.dimensions-grid dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 400;
}

.site-footer {
  padding: 1rem 0 1.75rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

.form-section {
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
}

.form-section h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 1rem;
}

.quality-form {
  display: grid;
  gap: 0.75rem;
}

.quality-form label {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.form-row {
  display: grid;
  gap: 0.75rem;
}

.quality-form input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 1px;
  background: #ffffff;
  font-size: 0.95rem;
  color: var(--text);
}

.quality-form input:focus-visible {
  outline: 2px solid var(--muted);
  outline-offset: 2px;
}

.results {
  padding: 1.5rem 0 2.5rem;
}

.results h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.results-placeholder,
.results-error,
.results-meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.results-meta {
  margin-bottom: 1.5rem;
}

.results-grid {
  display: grid;
  gap: 1rem;
}

.result-group {
  border: 1px solid var(--border);
  background: #ffffff;
  padding: 0.9rem;
}

.result-group h3 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.result-group ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (min-width: 720px) {
  .form-row {
    grid-template-columns: 2fr 1fr;
    align-items: end;
  }

  .results-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .dimensions-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}