/* ---------- Reset & base ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #5c5c5c;
  --color-accent: #2563eb;
  --color-accent-dark: #1d4ed8;
  --color-border: #e5e5e5;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1100px;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

code {
  background: #f2f2f2;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  color: var(--color-muted);
  font-size: 0.95rem;
  transition: color 0.15s ease;
}

.nav a:hover {
  color: var(--color-text);
}

/* ---------- Hero ---------- */
.hero {
  padding: 96px 0;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 16px;
}

.hero p {
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto 32px;
}

.btn {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 12px 24px;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease;
}

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

.btn-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* ---------- Simple sub-pages ---------- */
.page-hero {
  padding: 96px 0;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 16px;
}

.page-hero p {
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto 32px;
}

.back-link {
  color: var(--color-accent);
  font-size: 0.95rem;
}

.back-link:hover {
  text-decoration: underline;
}

/* ---------- Sections ---------- */
.section {
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
}

.section h2 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.section p {
  color: var(--color-muted);
  max-width: 640px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .site-header .container {
    flex-direction: column;
    height: auto;
    padding: 16px 24px;
    gap: 12px;
  }

  .hero {
    padding: 64px 0;
  }
}

/* ---------- Add to css/styles.css for the MRI table ---------- */

.mri-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 32px;
  font-size: 0.95rem;
}

.mri-table th,
.mri-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
}

.mri-table th {
  color: var(--color-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.content h2 {
  font-size: 1.3rem;
  margin: 24px 0 6px;
}

.content h3 {
  font-size: 1.05rem;
  margin: 18px 0 4px;
}

.content p {
  color: var(--color-muted);
  max-width: 640px;
  margin-bottom: 8px;
}

.content ul {
  color: var(--color-muted);
  max-width: 640px;
  margin: 4px 0 10px 40px; /* increased from 20px */
}


.content ul li {
  margin-bottom: 2px;
}