/* ============================================
   Bromfield '76 Alumni — john.css
   School colors: Blue (#003F98) & White
   ============================================ */

:root {
  --blue-dark: #002C6A;
  --blue: #003F98;
  --blue-light: #1a5fc7;
  --blue-faint: #e8f0fc;
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #f0f1f3;
  --gray-200: #d9dce0;
  --gray-600: #5a6270;
  --gray-800: #2d3138;
  --text: var(--gray-800);
  --text-muted: var(--gray-600);
  --link: var(--blue);
  --link-hover: var(--blue-dark);
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: Georgia, "Times New Roman", serif;
  --max-width: 52rem;
}

/* --- Reset & Base --- */

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--white);
}

/* --- Layout --- */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* --- Header / Banner --- */

header {
  background: var(--blue);
  color: var(--white);
  padding: 1.5rem 1.5rem;
  text-align: center;
}

header h1,
header h2,
header h3 {
  font-family: var(--font-heading);
  margin: 0;
  color: var(--white);
}

header h1 { font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem); }
header h2 { font-size: clamp(1.25rem, 1rem + 1.2vw, 1.75rem); }

header a {
  color: var(--blue-faint);
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,0.4);
}

header a:hover {
  color: var(--white);
  text-decoration-color: var(--white);
}

/* --- Navigation --- */

nav {
  background: var(--blue-dark);
  padding: 0.5rem 1.5rem;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  justify-content: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

nav a {
  color: var(--blue-faint);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.25rem 0;
  display: inline-block;
}

nav a:hover {
  color: var(--white);
  text-decoration: underline;
}

/* --- Typography --- */

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--blue);
  line-height: 1.3;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

h1 { font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem); }
h2 { font-size: clamp(1.25rem, 1rem + 1.2vw, 1.75rem); }
h3 { font-size: clamp(1.1rem, 0.95rem + 0.75vw, 1.35rem); }

p {
  margin: 0 0 1rem;
}

/* --- Links --- */

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-color: rgba(0, 63, 152, 0.3);
  transition: color 0.15s, text-decoration-color 0.15s;
}

a:hover,
a:focus {
  color: var(--link-hover);
  text-decoration-color: var(--link-hover);
}

/* --- Lists --- */

ul, ol {
  padding-left: 1.5rem;
  margin: 0 0 1rem;
}

li {
  margin-bottom: 0.35rem;
}

/* --- Tables --- */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

th, td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

th {
  background: var(--blue-faint);
  color: var(--blue);
  font-weight: 600;
}

/* --- Images --- */

img {
  max-width: 100%;
  height: auto;
  display: inline-block;
}

/* --- Photo Grid --- */

.photo-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1rem 0;
}

.photo-grid a {
  display: block;
}

.photo-grid img {
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  transition: transform 0.15s, box-shadow 0.15s;
}

.photo-grid img:hover {
  transform: scale(1.03);
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

/* --- Gallery Thumbnails --- */

.gallery-thumb {
  margin: 0;
  text-align: center;
}

.gallery-thumb img {
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  transition: transform 0.15s, box-shadow 0.15s;
  max-height: 240px;
  width: auto;
}

.gallery-thumb a {
  text-decoration: none;
}

.gallery-thumb img:hover {
  transform: scale(1.03);
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}

.gallery-thumb figcaption {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* --- Photo Detail --- */

.photo-detail {
  text-align: center;
}

.photo-detail figure {
  margin: 0;
}

.photo-detail img {
  max-height: 80vh;
  width: auto;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.photo-detail figcaption {
  margin-top: 0.75rem;
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
}

/* --- Photo Navigation (prev/up/next) --- */

.photo-nav {
  background: var(--blue-dark);
  padding: 0.5rem 1.5rem;
}

.photo-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.photo-nav a {
  color: var(--blue-faint);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.25rem 0;
}

.photo-nav a:hover {
  color: var(--white);
  text-decoration: underline;
}

/* --- Page Navigation (Page 1 | Page 2) --- */

.page-nav {
  text-align: center;
  margin: 1rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.page-nav a {
  margin: 0 0.25rem;
}

.page-nav strong {
  margin: 0 0.25rem;
  color: var(--text);
}

/* --- Reunion Map Image --- */

.reunion-photo {
  margin: 1.5rem 0;
  overflow-x: auto;
}

.reunion-photo img {
  display: block;
}

/* --- Alumni List --- */

.alumni-list {
  list-style: none;
  padding: 0;
  columns: 2;
  column-gap: 2rem;
  margin: 1rem 0;
}

.alumni-list li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--gray-100);
  break-inside: avoid;
}

.alumni-list .note {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- Section Dividers --- */

hr {
  border: none;
  border-top: 2px solid var(--blue-faint);
  margin: 2rem 0;
}

/* --- Footer --- */

footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--gray-200);
  margin-top: 3rem;
}

/* --- Utility --- */

.pagetitle {
  color: var(--blue);
}

.text-center {
  text-align: center;
}

/* --- Responsive --- */

@media (max-width: 640px) {
  header {
    padding: 1rem;
  }

  main {
    padding: 1.25rem 1rem 3rem;
  }

  nav ul {
    gap: 0.15rem 1rem;
  }

  .alumni-list {
    columns: 1;
  }
}