@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #f5f4f0;
  --text: #171717;
  --muted: #77756f;
  --line: #d7d5cf;
  --pad: clamp(22px, 4vw, 64px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  min-height: 82px;
  padding: 23px var(--pad);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}

.brand-name,
.eyebrow,
.course-code,
.course-meta,
.archive-count,
.archive-note > span,
.header-meta,
footer {
  font-family: "DM Mono", monospace;
  letter-spacing: .04em;
}

.brand-name {
  font-size: 12px;
  font-weight: 500;
}

.brand-subtitle {
  margin-top: 3px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .06em;
}


main {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.archive-heading {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: end;
  padding: 55px 0 48px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 12px;
  font-size: 9px;
  color: var(--muted);
}

.archive-heading h1 {
  margin: 0;
  font-size: clamp(28px, 3.5vw, 52px);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -.045em;
}

.heading-note {
  max-width: 320px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.archive-controls {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 25px;
}

.filter {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 500 9px "DM Mono", monospace;
  letter-spacing: .05em;
}

.filter:hover,
.filter.is-active {
  color: var(--text);
}

.filter.is-active::before {
  content: "● ";
}

.archive-count {
  white-space: nowrap;
  color: var(--muted);
  font-size: 9px;
}

.archive {
  border-bottom: 1px solid var(--line);
}

.course {
  display: grid;
  grid-template-columns: 48px minmax(250px, 1.15fr) minmax(210px, .8fr) 165px;
  gap: 28px;
  align-items: center;
  min-height: 195px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  transition: padding .3s ease, background .3s ease;
}

.course:last-child { border-bottom: 0; }

.course:hover {
  padding-left: 10px;
  padding-right: 10px;
  background: rgba(255,255,255,.35);
}

.course-index {
  align-self: start;
  padding-top: 3px;
  font: 9px "DM Mono", monospace;
  color: var(--muted);
}

.course-code {
  font-size: 9px;
  color: var(--muted);
  margin-bottom: 8px;
}

.course h2 {
  margin: 0;
  font-size: clamp(24px, 2.5vw, 38px);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -.045em;
  text-transform: uppercase;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 19px;
  font-size: 8px;
  color: var(--muted);
}

.course-description {
  max-width: 310px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.course-link {
  justify-self: end;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 11px 0;
  border-bottom: 1px solid var(--text);
  color: var(--text);
  text-decoration: none;
  font: 500 9px "DM Mono", monospace;
  letter-spacing: .04em;
}

.course-link .arrow {
  font-size: 15px;
  transition: transform .25s ease;
}

.course-link:hover .arrow {
  transform: translate(4px, -4px);
}

.archive-note {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 30px;
  padding: 50px 0 75px;
}

.archive-note > span {
  color: var(--muted);
  font-size: 9px;
}

.archive-note p {
  margin: 0;
  max-width: 500px;
  color: var(--muted);
  font-size: 12px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 20px var(--pad);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 8px;
}

.course.is-hidden { display: none; }

@media (max-width: 900px) {
  .archive-heading {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .heading-note { max-width: 500px; }

  .course {
    grid-template-columns: 40px 1fr 150px;
    gap: 20px;
  }

  .course-description { display: none; }
}

@media (max-width: 640px) {
  .site-header { min-height: 72px; }

  

  .archive-heading {
    padding: 38px 0 35px;
  }

  .archive-heading h1 {
    font-size: 30px;
  }

  .archive-controls {
    align-items: flex-start;
    padding: 18px 0;
    flex-direction: column;
  }

  .archive-count { order: -1; }

  .filter-group { gap: 10px 18px; }

  .course {
    grid-template-columns: 28px 1fr;
    gap: 9px 14px;
    min-height: 0;
    padding: 27px 0;
  }

  .course:hover {
    padding-left: 7px;
    padding-right: 7px;
  }

  .course h2 { font-size: 27px; }

  .course-link {
    grid-column: 2;
    justify-self: stretch;
    margin-top: 12px;
  }

  .archive-note {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  footer { flex-direction: column; }
}

.main-menu-link{font:500 9px "DM Mono",monospace;letter-spacing:.05em;order:2;margin-left:auto}
.main-menu-link a{text-decoration:none;color:var(--muted)}
.main-menu-link a:hover{color:var(--text)}
.site-header .brand{order:1}
.site-header 
@media(max-width:640px){.main-menu-link{position:absolute;right:var(--pad);top:23px}.site-header{position:relative}.site-header .brand{padding-right:90px}}

/* Accent palette */
:root{--teal:#0f7774;--red:#b6403c}
.eyebrow,.course-code{color:var(--teal)}
.course-index{color:var(--red)}
.course-meta span:first-child{color:var(--teal)}
.course-link:hover{color:var(--red)}