/* OVRO SAL static site - minimal layout and typography */

:root {
  --color-bg: #fff;
  --color-text: #1a1a1a;
  --color-muted: #555;
  --color-link: #0066aa;
  --color-link-visited: #551a8b;
  --color-border: #ddd;
  --color-card-bg: #f8f9fa;
  --font-sans: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --space: 1rem;
  --max-width: 56rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
}

.site-header {
  padding: var(--space) 0;
  border-bottom: 1px solid var(--color-border);
}

.site-header .wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space);
}

.site-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.site-title a {
  color: var(--color-text);
  text-decoration: none;
}

.site-title a:hover {
  color: var(--color-link);
}

nav {
  margin-top: 0.5rem;
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

nav a {
  color: var(--color-link);
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

nav a[aria-current="page"] {
  font-weight: 600;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--space) * 2) var(--space);
}

main .wrap {
  max-width: var(--max-width);
  margin: 0 auto;
}

h1, h2, h3 {
  margin-top: 1.5em;
  margin-bottom: 0.5em;
  line-height: 1.2;
}

h1 { font-size: 1.75rem; margin-top: 0; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:visited {
  color: var(--color-link-visited);
}

/* Landing hero + cards */
.hero {
  margin-bottom: 2rem;
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-muted);
}

.telescope-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space);
  margin-top: 2rem;
}

.telescope-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}

.telescope-card a {
  display: block;
  color: inherit;
}

.telescope-card a:hover {
  text-decoration: none;
}

.telescope-card a:hover .telescope-card-title {
  color: var(--color-link);
}

.telescope-card img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.telescope-card-body {
  padding: var(--space);
}

.telescope-card-title {
  margin: 0 0 0.25em;
  font-size: 1.1rem;
}

.telescope-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* Detail pages */
.page-title {
  margin-bottom: 1rem;
}

.detail-image {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 1rem 0;
}

ul.links {
  list-style: none;
  padding: 0;
  margin: 1em 0;
}

ul.links li {
  margin: 0.5em 0;
}

/* 404 */
.not-found main {
  text-align: center;
  padding-top: 3rem;
}

.not-found h1 {
  margin-bottom: 0.5rem;
}

.not-found p {
  color: var(--color-muted);
}

.site-footer {
  margin-top: 3rem;
  padding-top: var(--space);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-muted);
}

.site-footer .wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space);
}