/* === CSS Custom Properties === */
:root {
  --color-primary: #0000C8;
  --color-accent: #BB0000;
  --color-bg: #FDFBF7;
  --color-bg-alt: #F5F3EF;
  --color-text: #2C2C2C;
  --color-text-light: #5A5A5A;
  --color-border: #D4D0C8;
  --color-white: #FFFFFF;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --max-width: 1100px;
  --prose-width: 680px;
  --sidebar-width: 220px;
  --nav-height: 60px;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-serif);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.3;
  margin-bottom: 0.5em;
}
h1 { font-size: 1.8rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }

p { margin-bottom: 1em; }

/* === Header / Nav === */
.site-header {
  background-color: var(--color-white);
  border-bottom: 3px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.5rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.header-logo img {
  width: 45px;
  height: auto;
  margin-right: 0.75rem;
}

.header-logo span {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--color-primary);
  white-space: nowrap;
}

.main-nav { display: flex; align-items: center; }

.main-nav > ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.main-nav > ul > li {
  margin-left: 0.25rem;
}

.main-nav ul {
  list-style: none;
}

.main-nav a {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text);
  padding: 0.4rem 0.6rem;
  border-radius: 3px;
  transition: background-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

/* === Nav Dropdown === */
.nav-dropdown {
  position: relative;
}

.dropdown-trigger {
  cursor: pointer;
}

.dropdown-trigger::after {
  content: " \25BE";
  font-size: 0.65em;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 0.4rem 0;
  min-width: 160px;
  z-index: 200;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu {
  display: block;
}

.dropdown-menu li {
  width: 100%;
}

.dropdown-menu a {
  display: block;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  border-radius: 0;
}

.dropdown-menu a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform 0.2s, opacity 0.2s;
  margin-bottom: 5px;
}

.hamburger span:last-child {
  margin-bottom: 0;
}

/* === Main Content === */
.site-main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* Prose content (essays, teacher bios) */
.prose {
  max-width: var(--prose-width);
  margin: 0 auto;
}

.prose p { margin-bottom: 1.2em; }
.prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: 1.2em;
  margin: 1.5em 0;
  color: var(--color-text-light);
  font-style: italic;
}

/* === Section Header Image === */
.section-header {
  text-align: center;
  margin-bottom: 2rem;
}

.section-header img {
  display: inline-block;
  margin-bottom: 1rem;
}

/* === Sidebar + Content Layout === */
.sidebar-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-gap: 2rem;
  align-items: start;
}

.sidebar {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 1.25rem;
  position: sticky;
  top: calc(var(--nav-height) + 1.5rem);
  max-height: calc(100vh - var(--nav-height) - 3rem);
  overflow-y: auto;
}

.sidebar h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.sidebar ul { list-style: none; }
.sidebar li { margin-bottom: 0.3rem; }

.sidebar a {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  display: block;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
}

.sidebar a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
}

.sidebar .plain-name {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-text-light);
  padding: 0.2rem 0.4rem;
}

.content-area {
  min-width: 0;
}

/* === Photo Gallery Grid === */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  grid-gap: 0.75rem;
}

.name-list li .gallery-grid {
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
}

.gallery-grid.large {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.gallery-item {
  cursor: pointer;
  overflow: hidden;
  border-radius: 4px;
  border: 2px solid transparent;
  transition: border-color 0.15s, transform 0.15s;
  position: relative;
  padding-bottom: 100%; /* 1:1 aspect ratio fallback */
}

@supports (aspect-ratio: 1) {
  .gallery-item {
    aspect-ratio: 1;
    padding-bottom: 0;
  }
}

.gallery-item:hover {
  border-color: var(--color-primary);
  transform: scale(1.03);
}

.gallery-item img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@supports (aspect-ratio: 1) {
  .gallery-item img {
    position: static;
  }
}

.gallery-caption {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-align: center;
  margin-top: 0.25rem;
}

/* === Student Class Pages === */
.class-header {
  text-align: center;
  margin-bottom: 2rem;
}

.class-header img {
  display: inline-block;
}

.student-section {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.student-section h3 {
  margin-bottom: 1rem;
}

.student-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  grid-gap: 0.5rem;
}

/* === Year List === */
.year-list {
  columns: 3;
  column-gap: 2rem;
  list-style: none;
  font-family: var(--font-sans);
  font-size: 1rem;
}

.year-list li {
  margin-bottom: 0.4rem;
  break-inside: avoid;
}

.year-list .no-link {
  color: var(--color-text-light);
}

/* === Class Year Dropdown === */
.class-year-wrapper {
  text-align: center;
  margin: 2rem 0;
}

.class-year-label {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-weight: 600;
  margin-right: 0.5rem;
}

.class-year-select {
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-white);
  color: var(--color-text);
  cursor: pointer;
  min-width: 200px;
}

.class-year-select option:disabled {
  color: var(--color-text-light);
}

/* === People Landing Page === */
.people-sections {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-gap: 2rem;
  max-width: var(--prose-width);
  margin: 0 auto;
}

.people-card {
  display: block;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s;
}

.people-card:hover {
  border-color: var(--color-primary);
}

.people-card h2 {
  margin-bottom: 0.75rem;
}

.people-card p {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

/* === Yearbooks === */
.yearbooks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  grid-gap: 1.5rem;
  max-width: var(--prose-width);
  margin: 0 auto;
}

.yearbook-item {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
  transition: border-color 0.15s;
  display: block;
  text-decoration: none;
  color: inherit;
}

.yearbook-item:hover {
  border-color: var(--color-primary);
}

.yearbook-year {
  display: block;
  font-family: var(--font-sans);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.yearbook-meta {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

.muted-note {
  color: #5A5A5A;
  font-style: italic;
}

/* === Teacher Page === */
.teacher-content {
  max-width: var(--prose-width);
}

.teacher-content img {
  float: left;
  margin: 0 1.5rem 1rem 0;
  max-width: 240px;
  border-radius: 4px;
}

.teacher-photo-only {
  text-align: center;
}

.teacher-photo-only img {
  float: none;
  margin: 0 auto;
  max-width: 100%;
  border-radius: 4px;
}

/* === Links Page === */
.links-section {
  margin-bottom: 2rem;
}

.links-section h3 {
  margin-bottom: 0.5rem;
}

.dead-link-notice {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-accent);
  font-style: italic;
  display: inline;
}

/* === Directory === */
.privacy-gate {
  max-width: var(--prose-width);
  margin: 2rem auto;
  text-align: center;
}

.privacy-gate p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  text-align: left;
}

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 2rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s;
}

.btn:hover {
  background-color: #0000A0;
  text-decoration: none;
  color: var(--color-white);
}

.directory-content { display: none; }
.directory-content.visible { display: block; }

.directory-search {
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  width: 100%;
  max-width: 400px;
  margin-bottom: 1.5rem;
}

.directory-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

.directory-table th {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0.6rem 0.75rem;
  text-align: left;
  font-weight: 600;
  position: sticky;
  top: 0;
}

.directory-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.directory-table tr:hover td {
  background-color: var(--color-bg-alt);
}

/* === Footer === */
.site-footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem;
  text-align: center;
  margin-top: auto;
}

.site-footer p {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.site-footer a { color: var(--color-primary); }

/* === Homepage === */
.home-hero {
  text-align: center;
  padding: 3rem 1rem;
}

.home-hero .logo-img {
  max-width: 150px;
  margin: 0 auto 1.5rem;
  border-radius: 8px;
}

.home-hero .logotype {
  max-width: 500px;
  margin: 0 auto 2rem;
}

.home-mission {
  max-width: var(--prose-width);
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.9;
}

/* === Back Link === */
.back-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  display: inline-block;
}

/* === Image with caption (class photos) === */
.class-photo-main {
  text-align: center;
  margin-bottom: 2rem;
}

.class-photo-main img {
  max-width: 100%;
  margin: 0 auto;
  border-radius: 4px;
}

.class-photo-main .caption {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.75rem;
}

/* === Responsive === */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 3px solid var(--color-primary);
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }

  .main-nav.open { display: block; }

  .main-nav > ul {
    flex-direction: column;
  }

  .main-nav > ul > li {
    margin-left: 0;
  }

  .main-nav a {
    display: block;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding: 0;
    min-width: 0;
  }

  .nav-dropdown .dropdown-menu {
    display: none;
  }

  .nav-dropdown.open .dropdown-menu {
    display: block;
  }

  .dropdown-menu a {
    padding-left: 2rem;
    font-size: 0.85rem;
  }

  .sidebar-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    max-height: none;
  }

  .teacher-content img {
    float: none;
    max-width: 100%;
    margin: 0 0 1rem 0;
  }

  .year-list { columns: 2; }

  h1 { font-size: 1.5rem; }

  .home-hero { padding: 2rem 0.5rem; }
  .home-hero .logotype { max-width: 100%; }

  /* Directory card layout on mobile */
  .directory-table thead { display: none; }
  .directory-table tr {
    display: block;
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.75rem;
  }
  .directory-table td {
    display: block;
    border: none;
    padding: 0.25rem 0;
  }
  .directory-table td::before {
    content: attr(data-label) ": ";
    font-weight: 600;
  }
}

@media (max-width: 480px) {
  .header-logo span { display: none; }
  .year-list { columns: 1; }
  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
}