/* A course programme rather than a landing page: visible controls, dated rows,
   compact resource lists. */
:root {
  --bg: #ebe9e2;
  --card: #fbfaf6;
  --card-inner-hover: #f1eee7;
  --text: #242a27;
  --muted: #535d58;
  --subtle: #65716a;
  --border: #b7bcb4;
  --border-subtle: #d7d9d0;
  --accent: #68473f;
  --link: #3b514a;
  --link-hover: #263c34;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Avenir Next", "Trebuchet MS", sans-serif;
  font-size: 15px;
  line-height: 1.55;
}

.container {
  max-width: 1120px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 0 46px 56px;
  background: var(--card);
  border-right: 1px solid var(--border-subtle);
  border-left: 1px solid var(--border-subtle);
}

.site-header {
  margin-bottom: 0;
  padding: 0;
  border-bottom: 0;
}

.header-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  align-items: end;
  padding: 32px 0 27px;
  border-bottom: 1px solid var(--text);
}

.brand-title {
  margin: 0 0 4px;
  color: var(--text);
  font-family: "Iowan Old Style", Baskerville, Georgia, serif;
  font-size: clamp(2.1rem, 4.3vw, 3.1rem);
  font-weight: 500;
  letter-spacing: -.045em;
  line-height: 1.06;
}

.brand-subtitle {
  margin: 0;
  max-width: 65ch;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.5;
}

.header-top > .wiki-btn {
  flex: none;
  padding: 9px 13px;
  border: 1px solid var(--border);
  background: transparent;
  white-space: nowrap;
}

.wiki-btn {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  gap: 10px;
  padding: 3px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  border-radius: 0;
  background: transparent;
  color: var(--link);
  font-size: .78rem;
  font-weight: 600;
}

.wiki-btn:hover,
.header-top > .wiki-btn:hover {
  background: var(--card-inner-hover);
  border-color: var(--text);
  color: var(--link-hover);
  transform: none;
}

.wiki-btn-absent,
.wiki-btn-absent:hover {
  padding: 3px 0;
  border: 0;
  background: transparent;
  color: var(--subtle);
  font-weight: 400;
  cursor: default;
}

/* All six destinations stay in view at every width. */
.tabs-nav {
  display: grid;
  grid-template-columns: 1.5fr repeat(5, 1fr);
  gap: 0;
  margin: 0;
  border-bottom: 1px solid var(--text);
}

.tab-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  width: 100%;
  min-width: 0;
  min-height: 52px;
  padding: 12px 7px;
  border: 0;
  border-top: 3px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: .83rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: none;
  transition: background-color 140ms ease;
}

.tab-button + .tab-button { border-left: 1px solid var(--border-subtle); }
.tab-button:hover { background: var(--card-inner-hover); color: var(--text); }
.tab-button.active,
.tab-button.active:hover {
  border-top-color: var(--accent);
  background: #f0ece4;
  color: var(--text);
  box-shadow: none;
  font-weight: 700;
}

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* The group selector wraps instead of hiding the remaining buttons offscreen. */
.group-filter {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin: 24px 0 25px;
  padding: 0;
  border: 0;
  background: transparent;
}

.group-filter-label {
  flex: none;
  padding-top: 10px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.group-filter-options {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  min-width: 0;
  gap: 5px;
  overflow: visible;
}

.group-filter-button {
  display: inline-flex;
  flex: none;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  line-height: 1.3;
  white-space: nowrap;
  cursor: pointer;
  min-height: 39px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
  color: var(--text);
  font-size: .79rem;
  font-weight: 600;
  transition: background-color 140ms ease;
}

.group-filter-button:hover { background: var(--card-inner-hover); }
.group-filter-button[aria-pressed="true"],
.group-filter-button[aria-pressed="true"]:hover {
  border-color: var(--text);
  background: var(--text);
  color: #fff;
}
.group-filter-count,
.group-filter-button[aria-pressed="true"] .group-filter-count {
  color: inherit;
  font-size: .73rem;
  font-variant-numeric: tabular-nums;
  opacity: .75;
}

.deadline-view-tabs {
  display: flex;
  width: 100%;
  max-width: none;
  gap: 25px;
  margin: 0;
  border-bottom: 1px solid var(--text);
}
.deadline-view-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: -1px;
  border: 0;
  background: transparent;
  font-family: inherit;
  cursor: pointer;
  min-height: 46px;
  padding: 8px 2px 12px;
  color: var(--muted);
  font-size: .87rem;
  font-weight: 600;
}
.deadline-view-tab:hover,
.deadline-view-tab[aria-selected="true"] { color: var(--text); }
.deadline-view-tab::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}
.deadline-view-tab[aria-selected="true"]::after { transform: scaleX(1); }
[hidden] { display: none !important; }

/* Dates sit in a stable gutter; descriptions and file links remain in view. */
.events-container { display: flex; flex-direction: column; gap: 0; margin: 0; border: 0; }
.event-card {
  padding: 19px 0 21px;
  border: 0;
  border-bottom: 1px solid var(--border-subtle);
  border-radius: 0;
  background: transparent;
}
.event-header {
  display: grid;
  grid-template-columns: 155px minmax(0, 1fr);
  gap: 20px;
  align-items: baseline;
}
.event-date {
  grid-column: 1;
  grid-row: 1;
  color: var(--accent);
  font-family: Menlo, Consolas, monospace;
  font-size: .76rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.event-name {
  margin: 0;
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
  color: var(--text);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.event-course,
.event-desc,
.event-meta,
.event-files { margin-left: 175px; }
.event-course { margin: 5px 0 0 175px; color: var(--muted); font-size: .8rem; }
.event-desc { max-width: 74ch; margin-top: 8px; margin-bottom: 0; color: var(--text); font-size: .88rem; overflow-wrap: anywhere; }
.event-meta, .event-files { display: flex; flex-wrap: wrap; gap: 10px 17px; margin-top: 10px; color: var(--muted); font-size: .82rem; }
.event-meta a, .event-file {
  border: 0;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}
.event-meta a:hover, .event-file:hover { color: var(--link-hover); }
.group-filter-empty, .empty-events {
  padding: 36px 0;
  border: 0;
  border-bottom: 1px solid var(--border-subtle);
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  text-align: left;
}

/* Each course is a record; its resources stay in two parallel lists. */
.subject-list { display: flex; flex-direction: column; gap: 0; margin: 24px 0 0; }
.subject-area {
  scroll-margin-top: 24px;
  padding: 23px 0 31px;
  border: 0;
  border-top: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.subject-area:first-child { border-top-color: var(--text); }
.subject-switcher { display: none; }

@media (min-width: 1440px) {
  .tab-pane.active .subject-switcher {
    position: fixed;
    top: 180px;
    left: calc(50% + 572px);
    z-index: 2;
    display: block;
    width: min(240px, calc((100vw - 1120px) / 2 - 24px));
    max-height: calc(100vh - 204px);
    overflow-y: auto;
    padding: 17px 12px 16px;
    border: 1px solid var(--border-subtle);
    background: var(--card);
    box-shadow: 0 8px 24px rgb(36 42 39 / 7%);
  }
  .subject-switcher-title {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin: 0 2px 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text);
    font-family: "Iowan Old Style", Baskerville, Georgia, serif;
    font-size: 1.12rem;
    font-weight: 500;
    letter-spacing: -.02em;
  }
  .subject-switcher-title span {
    align-self: center;
    color: var(--subtle);
    font-family: "Avenir Next", "Trebuchet MS", sans-serif;
    font-size: .72rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
  }
  .subject-switcher-list {
    margin-left: 6px;
    border-left: 1px solid var(--border);
  }
  .subject-switcher-link {
    position: relative;
    display: flex;
    gap: 9px;
    padding: 9px 5px 9px 13px;
    border-right: 2px solid transparent;
    color: var(--muted);
    font-size: .78rem;
    line-height: 1.4;
    text-decoration: none;
  }
  .subject-switcher-link::before {
    position: absolute;
    top: 16px;
    left: -5px;
    width: 9px;
    height: 9px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--card);
    content: "";
  }
  .subject-switcher-index {
    flex: none;
    color: var(--subtle);
    font-size: .7rem;
    font-variant-numeric: tabular-nums;
  }
  .subject-switcher-name { min-width: 0; overflow-wrap: anywhere; }
  .subject-switcher-link:hover {
    background: var(--card-inner-hover);
    color: var(--text);
  }
  .subject-switcher-link[aria-current="location"] {
    border-right-color: var(--accent);
    background: var(--card-inner-hover);
    color: var(--text);
    font-weight: 700;
  }
  .subject-switcher-link[aria-current="location"]::before {
    left: -6px;
    width: 11px;
    height: 11px;
    border-color: var(--accent);
    background: var(--accent);
    box-shadow: 0 0 0 3px var(--card);
  }
}

@media (min-width: 1440px) and (max-width: 1579px) {
  .subject-switcher-index { display: none; }
}
.subject-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; align-items: baseline; margin-bottom: 19px; padding: 0; border: 0; }
.subject-title {
  color: var(--text);
  font-family: "Iowan Old Style", Baskerville, Georgia, serif;
  font-size: clamp(1.45rem, 2.4vw, 1.85rem);
  font-weight: 500;
  letter-spacing: -.02em;
  line-height: 1.2;
  overflow-wrap: anywhere;
}
.sheets-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; }
.sheets-box {
  min-width: 0;
  padding: 0 27px 0 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
.sheets-box + .sheets-box {
  padding: 0 0 0 27px;
  border-left: 1px solid var(--border-subtle);
}
.sheets-box-title {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 24px;
  margin: 0 0 7px;
  color: var(--muted);
  font-size: .71rem;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: none;
}
.sheets-box-title svg { flex: none; }
.sheets-count {
  margin-left: auto;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
  font-size: .71rem;
  font-variant-numeric: tabular-nums;
}
.sheets-items { display: flex; flex-direction: column; gap: 0; }
.sheet-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-decoration: none;
  min-width: 0;
  min-height: 43px;
  padding: 9px 0;
  border: 0;
  border-top: 1px solid var(--border-subtle);
  border-radius: 0;
  background: transparent;
  color: var(--link);
  font-size: .83rem;
  line-height: 1.45;
}
.sheet-link:hover {
  padding-left: 0;
  border-color: var(--border);
  background: transparent;
  color: var(--link-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
  transform: none;
}
.sheet-link-name { flex: 1; min-width: 0; overflow-wrap: anywhere; font-weight: 500; }
.sheet-link-icon, .sheet-link:hover .sheet-link-icon { flex: none; color: var(--accent); }
.sheets-empty { margin: 0; padding: 10px 0; color: var(--muted); font-size: .86rem; font-style: normal; }
.sheets-note { margin: 0 0 16px; padding: 0 0 0 11px; border-left: 2px solid var(--accent); border-radius: 0; background: transparent; color: var(--muted); font-size: .82rem; }
.site-footer {
  margin-top: 54px;
  padding-top: 17px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .76rem;
  text-align: left;
}
.site-footer p { margin: 0; }
.group-filter-empty { font-size: .88rem; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 760px) {
  .container { padding: 0 24px 48px; }
  .brand-title { font-size: 2.4rem; }
  .sheets-box { padding-right: 17px; }
  .sheets-box + .sheets-box { padding-left: 17px; }
}

@media (max-width: 620px) {
  .container { padding: 0 16px 40px; border: 0; }
  .header-top { align-items: flex-start; padding: 24px 0 19px; }
  .brand-title { font-size: 2.25rem; }
  .brand-subtitle { font-size: .78rem; }
  .header-top > .wiki-btn { margin-top: 2px; }
  .tabs-nav { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .tab-button { min-height: 45px; padding: 10px 2px; font-size: .78rem; }
  .tab-button:first-child {
    grid-column: 1 / -1;
    border-bottom: 1px solid var(--border-subtle);
  }
  .tab-button:nth-child(2) { border-left: 0; }
  .group-filter { display: block; margin: 18px 0 21px; }
  .group-filter-label { display: block; margin-bottom: 8px; padding: 0; }
  .group-filter-options { width: 100%; gap: 5px; }
  .deadline-view-tabs { gap: 24px; }
  .deadline-view-tab { flex: none; }
  .event-card { padding: 16px 0 18px; }
  .event-header { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .event-date { grid-column: 1; grid-row: 1; }
  .event-name { grid-column: 1; grid-row: 2; font-size: 1.04rem; }
  .event-course, .event-desc, .event-meta, .event-files { margin-left: 0; }
  .subject-list { margin-top: 18px; }
  .subject-head { align-items: flex-start; }
  .sheets-grid { grid-template-columns: minmax(0, 1fr); gap: 19px; }
  .sheets-box, .sheets-box + .sheets-box { padding: 0; border: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .tab-button, .group-filter-button { transition: none; }
}