/* =========================================================
   UofL Meteorology — design system
   Visual language: surface analysis / synoptic chart paper.
   Contour isobars, station-model markers, forecast-discussion
   typography (AFD-style monospace headers).
   ========================================================= */

:root {
  --paper: #f4efe2;
  --paper-dim: #ebe4d2;
  --ink: #1a2330;
  --ink-soft: #3a4456;
  --muted: #6b7280;
  --isobar: #2b4570;
  --warm: #c64b3c;
  --cold: #2e6e9e;
  --high: #3c7a5c;
  --rule: rgba(26, 35, 48, 0.16);
  --max-w: 1120px;

  --display: "Archivo", "Arial Narrow", sans-serif;
  --body: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--isobar); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--warm);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- isobar background texture ---------- */
.isobars {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.52;
  pointer-events: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

/* ---------- header / nav ---------- */
.site-header {
  position: relative;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand .mark {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--warm);
  border: 1px solid var(--warm);
  padding: 2px 6px;
  border-radius: 2px;
}

.brand .name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.brand .name small {
  display: block;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

nav.primary {
  display: flex;
  gap: 26px;
}

nav.primary a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}

nav.primary a:hover,
nav.primary a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--warm);
}

.nav-toggle {
  display: none;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.hero .wrap {
  position: relative;
  z-index: 2;
  padding-top: 84px;
  padding-bottom: 84px;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warm);
  display: inline-block;
}

.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.4rem, 5vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  max-width: 14ch;
}

.hero .lede {
  font-size: 1.2rem;
  max-width: 56ch;
  color: var(--ink-soft);
  margin: 0 0 34px;
}

.hero .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 22px;
  border-radius: 2px;
  display: inline-block;
  border: 1px solid var(--ink);
}

.btn.primary {
  background: var(--ink);
  color: var(--paper);
}

.btn.primary:hover { background: var(--isobar); border-color: var(--isobar); }

.btn.ghost {
  background: transparent;
  color: var(--ink);
}

.btn.ghost:hover { border-color: var(--warm); color: var(--warm); }

/* ---------- section scaffolding ---------- */
section { position: relative; }

.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--rule);
}

.section:last-of-type { border-bottom: none; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.section-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

.section-head h2 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.01em;
  margin: 0;
}

.section-intro {
  max-width: 62ch;
  color: var(--ink-soft);
}

/* ---------- track grid (home) ---------- */
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.track-card {
  background: var(--paper);
  padding: 26px 22px;
  position: relative;
}

.track-card.is-active {
  background: var(--ink);
  color: var(--paper);
}

.track-card .track-code {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.track-card.is-active .track-code { color: #d9cba6; }

.track-card h3 {
  font-family: var(--display);
  font-size: 1.05rem;
  margin: 8px 0 10px;
}

.track-card p {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin: 0;
}

.track-card.is-active p { color: #cfd6e0; }

.track-card .pin {
  position: absolute;
  top: 20px;
  right: 20px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--warm);
}

/* ---------- station block (quick facts) ---------- */
.station-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 28px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 34px 0;
}

.station-item .num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 2.1rem;
  color: var(--isobar);
  line-height: 1;
}

.station-item .lab {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 8px;
}

/* ---------- AFD-style discussion block ---------- */
.discussion {
  background: var(--ink);
  color: var(--paper-dim);
  padding: 40px;
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.8;
  overflow-x: auto;
}

.discussion .head-line {
  color: var(--warm);
  letter-spacing: 0.08em;
}

.discussion p { margin: 0 0 1.2em; }
.discussion p:last-child { margin-bottom: 0; }

/* ---------- degree requirement tables ---------- */
.req-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 0 0 8px;
}

.req-table caption {
  text-align: left;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.req-table th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--ink);
  padding: 8px 10px;
}

.req-table td {
  padding: 10px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.req-table td.code {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--isobar);
  white-space: nowrap;
}

.req-table td.hrs {
  text-align: right;
  font-family: var(--mono);
  color: var(--muted);
  width: 60px;
}

.req-table tr.total td {
  border-top: 2px solid var(--ink);
  border-bottom: none;
  font-weight: 700;
  padding-top: 12px;
}

.table-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 6px 0 30px;
}

/* ---------- course cards ---------- */
.course-list {
  display: grid;
  gap: 18px;
}

.course-card {
  border: 1px solid var(--rule);
  border-left: 4px solid var(--isobar);
  background: var(--paper-dim);
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 20px;
}

.course-card .code {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
}

.course-card .units {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
}

.course-card h4 {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.05rem;
}

.course-card .desc {
  color: var(--ink-soft);
  font-size: 0.94rem;
  margin: 0 0 8px;
}

.course-card .meta {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- flight plan tabs ---------- */
.flight-plan {
  border: 1px solid var(--rule);
}

.fp-tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--rule);
  background: var(--paper-dim);
}

.fp-tabs button {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: transparent;
  border: none;
  border-right: 1px solid var(--rule);
  padding: 14px 20px;
  cursor: pointer;
  color: var(--ink-soft);
}

.fp-tabs button[aria-selected="true"] {
  background: var(--ink);
  color: var(--paper);
}

.fp-panels { padding: 28px; }

.fp-panel { display: none; }
.fp-panel.is-active { display: block; }

.fp-term {
  margin-bottom: 26px;
}

.fp-term h4 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--warm);
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--rule);
}

.fp-term ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.fp-term li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.92rem;
  padding: 6px 0;
  border-bottom: 1px dotted var(--rule);
}

.fp-term li .c {
  font-family: var(--mono);
  color: var(--isobar);
  min-width: 84px;
}

.fp-term li .t { flex: 1; color: var(--ink-soft); }
.fp-term li .h { font-family: var(--mono); color: var(--muted); }

.fp-term .term-total {
  text-align: right;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

/* ---------- faculty ---------- */
.faculty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.faculty-card {
  border: 1px solid var(--rule);
  background: var(--paper-dim);
}

.faculty-card .fc-head {
  padding: 26px 26px 20px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.faculty-card .station-id {
  position: absolute;
  top: 26px;
  right: 26px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  text-align: right;
}

.faculty-card h3 {
  font-family: var(--display);
  font-size: 1.4rem;
  margin: 0 0 4px;
}

.faculty-card .role {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--isobar);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.faculty-card .fc-body {
  padding: 22px 26px 26px;
}

.faculty-card .fc-body p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 18px;
}

.tag {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: 1px solid var(--rule);
  padding: 5px 9px;
  color: var(--ink-soft);
}

.fc-field {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px;
  font-size: 0.88rem;
  padding: 6px 0;
  border-top: 1px dotted var(--rule);
}

.fc-field .k {
  font-family: var(--mono);
  color: var(--muted);
  text-transform: uppercase;
  font-size: 11px;
  padding-top: 2px;
}

.fc-field .v { color: var(--ink-soft); }

.fc-links {
  margin-top: 18px;
  display: flex;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12px;
}

/* ---------- callout ---------- */
.callout {
  border: 1px solid var(--warm);
  background: #f8ede9;
  padding: 22px 24px;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.callout strong { color: var(--ink); }

/* ---------- footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0 50px;
  background: var(--paper-dim);
}

footer.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px;
}

footer.site-footer p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

footer.site-footer .foot-mono {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  nav.primary {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    flex-direction: column;
    gap: 0;
    padding: 6px 0;
    display: none;
  }
  nav.primary.is-open { display: flex; }
  nav.primary a {
    padding: 12px 28px;
    border-bottom: 1px solid var(--rule);
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--ink);
    background: transparent;
    font-family: var(--mono);
    cursor: pointer;
  }
  .course-card {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .fc-field { grid-template-columns: 90px 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}