:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-100: #f6f6f6;
  --gray-200: #ebebeb;
  --gray-300: #d6d6d6;
  --gray-500: #8f8f8f;
  --gray-700: #444444;
  --red: #c8102e;
  --border: #111111;
  --radius: 8px;
  --content-max: 900px;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--gray-100);
  color: var(--black);
  line-height: 1.55;
}

a { color: var(--black); }

/* ---------- Site header ---------- */

header.site-header {
  background: var(--white);
  color: var(--black);
  border-bottom: 1px solid var(--gray-300);
  position: sticky;
  top: 0;
  z-index: 100;
}

header.site-header .header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 22px 20px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--black);
  text-align: left;
}

.school-logo {
  display: inline-block;
  height: 76px;
  width: 76px;
  flex-shrink: 0;
  object-fit: contain;
}

.brand-eyebrow {
  margin: 0;
  font-family: "Special Elite", "Consolas", "Courier New", monospace;
  font-size: 1.25rem;
  color: var(--black);
  line-height: 1.3;
}

.brand-title {
  margin: 2px 0 0;
  font-family: "Special Elite", "Consolas", "Courier New", monospace;
  font-size: 1.55rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--red);
  line-height: 1.3;
}

/* ---------- Main nav bar with course dropdowns ---------- */

nav.main-nav {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 10px 20px 12px;
  flex-wrap: wrap;
}

nav.main-nav > .nav-item {
  position: relative;
}

nav.main-nav > .nav-item > a.nav-link,
nav.main-nav > .nav-item > button.nav-link {
  display: inline-block;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--black);
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1.5px solid transparent;
  background: none;
  cursor: pointer;
}

nav.main-nav > .nav-item > a.nav-link:hover,
nav.main-nav > .nav-item > button.nav-link:hover,
nav.main-nav > .nav-item.open > button.nav-link {
  border-color: var(--black);
  background: var(--gray-100);
}

nav.main-nav .nav-item.current > a.nav-link {
  background: var(--black);
  color: var(--white);
}

.dropdown-panel {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--white);
  border: 1.5px solid var(--black);
  border-radius: var(--radius);
  min-width: 260px;
  padding: 8px;
  /* The search bar sits directly below the header and would otherwise
     paint over a long dropdown at equal (auto) z-index -- keep dropdowns
     on top of it. */
  z-index: 250;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

nav.main-nav .nav-item.open .dropdown-panel { display: block; }

.dropdown-panel a {
  display: block;
  padding: 9px 12px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--black);
  font-size: 0.9rem;
}

.dropdown-panel a:hover { background: var(--gray-100); }

.dropdown-panel .dropdown-heading {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  padding: 8px 12px 4px;
  font-weight: 700;
}

.dropdown-panel hr {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 6px 4px;
}

.dropdown-panel a.external::after {
  content: " \2197";
  color: var(--gray-500);
}

@media (max-width: 720px) {
  header.site-header .header-inner { padding-top: 16px; }
  .brand-title { font-size: 1.25rem; }
  .brand-eyebrow { font-size: 1rem; }
  nav.main-nav { gap: 2px; }
  nav.main-nav > .nav-item > a.nav-link,
  nav.main-nav > .nav-item > button.nav-link { padding: 9px 10px; font-size: 0.85rem; }
  .dropdown-panel { left: 0; transform: none; min-width: 220px; }
}

/* ---------- Layout ---------- */

main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 32px 20px 70px;
}

main.wide { max-width: 1200px; }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--gray-700);
  margin-bottom: 18px;
}

.breadcrumb a { color: var(--gray-700); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { margin: 0 6px; color: var(--gray-500); }

/* ---------- Hero ---------- */

.hero {
  text-align: center;
  padding: 8px 20px 8px;
}

.hero h2 {
  font-size: 1.7rem;
  margin: 0 0 8px;
}

.hero p {
  color: var(--gray-700);
  margin: 0 auto 18px;
  max-width: 680px;
}

.course-hero {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1.5px solid var(--border);
  margin-bottom: 24px;
  background: var(--white);
}

.course-hero img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
}

.course-hero-caption {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: space-between;
}

.course-hero-caption h1 {
  margin: 0;
  font-size: 1.5rem;
}

.course-hero-caption p {
  margin: 4px 0 0;
  color: var(--gray-700);
  font-size: 0.95rem;
}

/* ---------- Cards / grids ---------- */

.card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 20px;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.course-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--black);
  display: flex;
  flex-direction: column;
  transition: transform 0.12s, box-shadow 0.12s;
}

.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.14);
}

.course-card .thumb {
  height: 140px;
  background-size: cover;
  background-position: center;
  border-bottom: 1.5px solid var(--border);
}

.course-card .body { padding: 16px 18px 20px; flex: 1; display: flex; flex-direction: column; }

.course-card .eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--gray-500);
  font-weight: 700;
  margin: 0 0 6px;
}

.course-card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.course-card p { margin: 0; color: var(--gray-700); font-size: 0.9rem; flex: 1; }

.course-card .go {
  margin-top: 14px;
  font-weight: 700;
  font-size: 0.85rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 16px 0 32px;
}

.tool-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--black);
  transition: transform 0.12s, box-shadow 0.12s;
}

.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.tool-card h3 { margin: 0 0 6px; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; }
.tool-card p { margin: 0; color: var(--gray-700); font-size: 0.88rem; }

.tool-card.locked { opacity: 0.55; cursor: default; }
.tool-card.locked:hover { transform: none; box-shadow: none; }

.tool-card-courses { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tool-card-course-link {
  font-size: 0.82rem; font-weight: 600; text-decoration: none; color: var(--black);
  background: var(--gray-100); border: 1.5px solid var(--border); border-radius: 999px;
  padding: 5px 12px;
}
.tool-card-course-link:hover { background: var(--gray-200, var(--gray-100)); }

.dropdown-disabled {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  font-size: 0.9rem;
  color: var(--gray-500);
}

.unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 20px 0 8px;
}

.unit-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  text-decoration: none;
  color: var(--black);
  display: block;
}

.unit-card:hover { background: var(--gray-100); }

.unit-card.locked {
  opacity: 0.55;
  cursor: default;
}
.unit-card.locked:hover { background: var(--white); }

.unit-card .unit-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.unit-card h3 { margin: 6px 0 0; font-size: 1.05rem; }

.badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
  background: var(--gray-100);
}

.badge.on-site {
  border-color: var(--black);
  color: var(--white);
  background: var(--black);
}

.badge-open { background: var(--black); color: var(--white); }
.badge-closed { background: var(--white); color: var(--gray-700); border-color: var(--gray-300); }

/* ---------- Lesson layout ---------- */

.lesson-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 70px;
}

.lesson-sidebar {
  position: sticky;
  top: 96px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.lesson-sidebar h4 {
  margin: 0 0 10px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
}

.lesson-sidebar ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: lesson;
}

.lesson-sidebar li { margin-bottom: 2px; }

.lesson-sidebar a {
  display: flex;
  gap: 8px;
  text-decoration: none;
  color: var(--black);
  font-size: 0.88rem;
  padding: 7px 8px;
  border-radius: 6px;
  counter-increment: lesson;
}

.lesson-sidebar a::before {
  content: counter(lesson) ".";
  color: var(--gray-500);
  flex-shrink: 0;
}

.lesson-sidebar a:hover { background: var(--gray-100); }

.lesson-sidebar a.current {
  background: var(--black);
  color: var(--white);
  font-weight: 600;
}
.lesson-sidebar a.current::before { color: var(--gray-300); }

.lesson-content {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  min-width: 0;
}

.lesson-content h1 {
  margin-top: 0;
  font-size: 1.6rem;
}

.lesson-content h2 {
  font-size: 1.2rem;
  margin-top: 28px;
  padding-top: 10px;
  border-top: 1px solid var(--gray-200);
}

.lesson-content h2:first-of-type { border-top: none; padding-top: 0; }

.lesson-content h3 { font-size: 1.02rem; margin-top: 20px; }

.lesson-content p { margin: 0 0 14px; }

.lesson-content ul, .lesson-content ol {
  margin: 0 0 14px;
  padding-left: 22px;
}
.lesson-content li { margin-bottom: 6px; }

.lesson-content a { color: var(--red); }

.lesson-content .resource-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1.5px solid var(--black);
  border-radius: 8px;
  padding: 8px 14px;
  text-decoration: none;
  color: var(--black);
  font-size: 0.88rem;
  font-weight: 600;
  margin: 4px 8px 4px 0;
}
.lesson-content .resource-link:hover { background: var(--gray-100); }

.lesson-content .video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  border: 1.5px solid var(--border);
  margin: 8px 0 20px;
}
.lesson-content .video-embed iframe {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0;
}

.lesson-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 20px;
  font-size: 0.92rem;
}
.lesson-content th, .lesson-content td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}
.lesson-content th {
  background: var(--gray-100);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1.5px solid var(--black);
}
.lesson-content tr:last-child td { border-bottom: none; }

.lesson-content dl { margin: 0 0 20px; }
.lesson-content dt {
  font-weight: 700;
  margin-top: 12px;
}
.lesson-content dd {
  margin: 2px 0 0;
  color: var(--gray-700);
}

.lesson-content .note {
  background: var(--gray-100);
  border-left: 4px solid var(--black);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  margin: 0 0 16px;
  font-size: 0.93rem;
}

.prev-next-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-200);
}

.prev-next-nav a {
  text-decoration: none;
  color: var(--black);
  border: 1.5px solid var(--black);
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  max-width: 46%;
}
.prev-next-nav a:hover { background: var(--gray-100); }
.prev-next-nav a.next { text-align: right; margin-left: auto; }
.prev-next-nav .spacer { flex: 1; }

@media (max-width: 860px) {
  .lesson-layout { grid-template-columns: 1fr; }
  .lesson-sidebar { position: static; max-height: none; }
  .lesson-content { padding: 22px; }
}

/* ---------- Buttons / misc ---------- */

.btn {
  display: inline-block;
  border: 1.5px solid var(--black);
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  background: var(--white);
  color: var(--black);
  transition: background 0.15s, color 0.15s;
}
.btn-primary { background: var(--black); color: var(--white); }
.btn-primary:hover { background: var(--gray-700); border-color: var(--gray-700); }
.btn-ghost { border-color: var(--gray-300); color: var(--gray-700); }
.btn-ghost:hover { background: var(--gray-200); }

.hint { font-size: 0.8rem; color: var(--gray-500); }

/* ---------- Forms / alerts / PIN gate ---------- */

form.stack { display: flex; flex-direction: column; gap: 14px; }

.field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 5px;
}

.field input, .field textarea, .field select {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--gray-300);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--white);
  color: var(--black);
}

.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--black);
}

.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: 16px;
  border: 1.5px solid var(--black);
  background: var(--white);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.alert::before { font-weight: 700; flex-shrink: 0; }
.alert-error { background: var(--gray-100); }
.alert-error::before { content: "\2715"; }
.alert-success { background: var(--gray-100); }
.alert-success::before { content: "\2713"; }
.alert-warning { background: var(--gray-200); border-style: dashed; }
.alert-warning::before { content: "!"; }
.alert-info { background: var(--white); }
.alert-info::before { content: "i"; font-style: italic; }

.pin-gate { max-width: 360px; margin: 60px auto; text-align: center; }
.pin-gate .card { text-align: left; }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 160px; }

.btn-sm { padding: 6px 10px; font-size: 0.76rem; }
.btn-danger { border-color: var(--black); color: var(--black); }
.btn-danger:hover { background: var(--black); color: var(--white); }

.empty-state { text-align: center; color: var(--gray-500); padding: 40px 20px; }

.period-section { margin-bottom: 28px; }
.period-section h2 {
  font-size: 1.15rem;
  margin: 0 0 12px;
  color: var(--black);
  display: flex;
  align-items: center;
  gap: 8px;
}
.period-section h2 .count {
  font-weight: 500;
  color: var(--gray-500);
  font-size: 0.8rem;
  font-family: inherit;
}

table.roster {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
table.roster th, table.roster td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-300);
  font-size: 0.92rem;
}
table.roster th {
  background: var(--gray-100);
  color: var(--black);
  font-weight: 700;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1.5px solid var(--black);
}
table.roster tbody tr:nth-child(even) { background: var(--gray-100); }
table.roster tr:last-child td { border-bottom: none; }

@media (max-width: 560px) {
  table.roster { font-size: 0.85rem; }
  table.roster th, table.roster td { padding: 8px 6px; }
}

/* ---------- Lesson banner (homepage) ---------- */

.lesson-banner {
  background: var(--black);
  color: var(--white);
  padding: 10px 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 28px;
  font-size: 0.88rem;
}
.lesson-banner-item b { color: var(--red); font-weight: 700; }

/* ---------- Announcements ---------- */

.announcement-card { margin-bottom: 16px; }
.announcement-date {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  font-weight: 700;
  margin: 0 0 8px;
}
.announcement-text { margin: 0; white-space: pre-wrap; color: var(--black); }

.announcement-list-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-200);
}
.announcement-list-item:last-child { border-bottom: none; }
.announcement-list-item .a-date { font-weight: 700; font-size: 0.85rem; color: var(--gray-700); flex-shrink: 0; }
.announcement-list-item .a-text { flex: 1; min-width: 200px; white-space: pre-wrap; }

/* ---------- Site search ---------- */

.site-search-bar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-300);
  display: flex;
  justify-content: center;
  padding: 12px 20px;
}

.search-box {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.search-box input {
  width: 100%;
  padding: 9px 14px;
  border: 1.5px solid var(--gray-300);
  border-radius: 999px;
  font-size: 0.88rem;
  font-family: inherit;
  background: var(--gray-100);
  color: var(--black);
}
.search-box input:focus {
  outline: none;
  border-color: var(--black);
  background: var(--white);
}

.search-results {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--white);
  border: 1.5px solid var(--black);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  max-height: 360px;
  overflow-y: auto;
  z-index: 200;
}
.search-results.open { display: block; }

.search-results a {
  display: block;
  padding: 10px 14px;
  text-decoration: none;
  color: var(--black);
  border-bottom: 1px solid var(--gray-200);
}
.search-results a:last-child { border-bottom: none; }
.search-results a:hover { background: var(--gray-100); }
.search-results .r-title { font-size: 0.9rem; font-weight: 600; }
.search-results .r-cat {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  margin-left: 6px;
  font-weight: 700;
}
.search-results .r-empty { padding: 14px; font-size: 0.86rem; color: var(--gray-500); }

@media (max-width: 720px) {
  .search-box { max-width: none; }
}

footer.site-footer {
  text-align: center;
  color: var(--gray-500);
  font-size: 0.8rem;
  padding: 24px 20px;
}

@media (max-width: 560px) {
  main { padding: 22px 16px 50px; }
  .lesson-content { padding: 18px; }
}