/* =========================================================
   DISTANT SIGNALS — shared stylesheet
   Two channels, one system. Travel = ochre. Signal = slate.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,400&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --paper: #faf8f4;
  --ink: #1c1a17;
  --ink-soft: #5c574e;
  --line: #e4ddd0;
  --ochre: #b8752f;
  --ochre-soft: #f1e2cc;
  --slate: #35545c;
  --slate-soft: #dde8e8;
  --radius: 2px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
}

h1, h2, h3, h4 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 500;
  margin: 0;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a { color: inherit; text-decoration: none; }

.fmono {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}

/* ---------- masthead ---------- */

.masthead {
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
}

.masthead .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: 'Fraunces', serif;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand .dot { color: var(--ochre); }

nav.primary {
  display: flex;
  gap: 28px;
  font-size: 14.5px;
}

nav.primary a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .15s ease, color .15s ease;
}

nav.primary a:hover,
nav.primary a.active {
  color: var(--ink);
  border-color: var(--ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- waveform divider (signature motif) ---------- */

.waveform {
  display: block;
  width: 100%;
  height: 28px;
  margin: 0;
}

.waveform path {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.5;
}

.waveform.accent-travel path { stroke: var(--ochre); opacity: 0.55; }
.waveform.accent-security path { stroke: var(--slate); opacity: 0.55; }

/* ---------- hero ---------- */

.hero {
  padding: 72px 0 56px;
}

.hero .eyebrow {
  display: block;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  max-width: 14ch;
}

.hero p.lede {
  margin-top: 20px;
  max-width: 52ch;
  font-size: 17px;
  color: var(--ink-soft);
}

/* ---------- channel cards ---------- */

.channels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 8px 0 64px;
}

.channel-card {
  background: var(--paper);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: background .15s ease;
}

.channel-card:hover { background: #fff; }

.channel-card .num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  color: var(--ink-soft);
}

.channel-card.travel .num { color: var(--ochre); }
.channel-card.security .num { color: var(--slate); }

.channel-card h2 { font-size: 26px; }

.channel-card p { color: var(--ink-soft); font-size: 15px; max-width: 34ch; }

.channel-card .enter {
  margin-top: auto;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.channel-card.travel .enter { color: var(--ochre); }
.channel-card.security .enter { color: var(--slate); }

/* ---------- feed ---------- */

.feed h3.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.feed-row {
  display: grid;
  grid-template-columns: 100px 1fr 120px;
  align-items: baseline;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.feed-row .fmono { white-space: nowrap; }

.feed-row h4 { font-size: 16.5px; font-weight: 500; }

.feed-row .tag {
  justify-self: end;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  padding: 3px 9px;
  border-radius: var(--radius);
  white-space: nowrap;
}

.tag.travel { background: var(--ochre-soft); color: var(--ochre); }
.tag.security { background: var(--slate-soft); color: var(--slate); }

/* ---------- channel index pages ---------- */

.channel-header {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
}

.channel-header .eyebrow { display: block; margin-bottom: 14px; }
.channel-header h1 { font-size: clamp(30px, 4.5vw, 44px); }
.channel-header p { margin-top: 14px; color: var(--ink-soft); max-width: 50ch; }

body.travel .channel-header .eyebrow,
body.travel .channel-header h1 { color: var(--ochre); }
body.security .channel-header .eyebrow,
body.security .channel-header h1 { color: var(--slate); }

.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3px;
  margin: 40px 0 60px;
}

.frame {
  aspect-ratio: 4/5;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 14px;
  background: linear-gradient(155deg, var(--ochre-soft), var(--ochre) 140%);
  overflow: hidden;
}

.frame .coords {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: rgba(28,26,23,0.75);
  background: rgba(250,248,244,0.85);
  padding: 3px 7px;
  border-radius: var(--radius);
}

.article-list { margin: 40px 0 60px; }

.article-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.article-row .when { font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--ink-soft); }
.article-row .when .rt { display: block; margin-top: 4px; }

.article-row h4 { font-size: 20px; margin-bottom: 8px; }
.article-row p { color: var(--ink-soft); font-size: 15px; max-width: 62ch; }

.article-row .tags { margin-top: 12px; display: flex; gap: 8px; }
.article-row .tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  padding: 3px 9px;
  border-radius: var(--radius);
  background: var(--slate-soft);
  color: var(--slate);
}

body.travel .article-row .tag { background: var(--ochre-soft); color: var(--ochre); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 44px;
}

footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

footer nav { display: flex; gap: 22px; font-size: 13.5px; }
footer nav a { color: var(--ink-soft); }
footer nav a:hover { color: var(--ink); }

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .channels { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .article-row { grid-template-columns: 1fr; gap: 8px; }
  .article-row .when .rt { display: inline; margin-left: 8px; }
}

@media (max-width: 600px) {
  .wrap { padding: 0 20px; }
  nav.primary { display: none; }
  nav.primary.open {
    display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
    position: absolute; top: 100%; left: 0; right: 0; background: var(--paper);
    border-bottom: 1px solid var(--line); padding: 18px 20px 22px; z-index: 10;
  }
  .nav-toggle { display: inline-block; }
  .masthead .wrap { position: relative; }
  .photo-grid { grid-template-columns: 1fr 1fr; }
  .feed-row { grid-template-columns: 1fr; gap: 4px; }
  .feed-row .tag { justify-self: start; }
}