/* ============================================================
   KoolekNetwork — design tokens
   Palette: cool paper + deep signal-teal ink, not warm-cream/terracotta,
   not near-black/neon, not broadsheet-hairline. Technical/network subject.
   Type: Space Grotesk (display) + IBM Plex Sans (body) + IBM Plex Mono (data/labels)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg: #F2F5F4;
  --surface: #FFFFFF;
  --ink: #101A19;
  --muted: #56676A;
  --accent: #256B57;
  --accent-strong: #123F33;
  --accent-soft: #DCEBE5;
  --line: #D6DEDB;
  --signal: #3FA98A;
  --radius: 3px;
  --maxw: 1080px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3{
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em 0;
  color: var(--accent-strong);
}

h1{ font-size: clamp(2rem, 4.5vw, 3.1rem); line-height:1.05; }
h2{ font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
h3{ font-size: 1.15rem; }

p{ margin: 0 0 1em 0; color: var(--ink); }
a{ color: var(--accent); text-decoration: none; }
a:hover{ text-decoration: underline; }
a:focus-visible, button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.mono{
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 0.02em;
}

.wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- header ---------- */
.site-header{
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top:0; z-index: 50;
}
.site-header .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 64px;
}
.logo{
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent-strong);
  display:flex; align-items:center; gap:8px;
}
.logo .dot{
  width:8px; height:8px; border-radius:50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--accent-soft);
  flex-shrink:0;
}
nav.primary{ display:flex; gap: 28px; align-items:center; }
nav.primary a{
  color: var(--muted);
  font-size: 0.92rem;
  font-weight:500;
}
nav.primary a:hover, nav.primary a.active{ color: var(--accent-strong); text-decoration:none; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-weight:600;
  font-size:0.92rem;
  border: 1px solid var(--accent-strong);
}
.btn-primary{ background: var(--accent-strong); color:#fff; }
.btn-primary:hover{ background: var(--accent); text-decoration:none; }
.btn-ghost{ background: transparent; color: var(--accent-strong); }
.btn-ghost:hover{ background: var(--accent-soft); text-decoration:none; }

/* ---------- hero / signal strip ---------- */
.hero{ padding: 72px 0 48px; }
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.78rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display:flex; align-items:center; gap:8px;
  margin-bottom: 18px;
}
.eyebrow::before{
  content:''; width:18px; height:1px; background: var(--accent);
}
.hero p.lead{
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 620px;
}
.hero-actions{ display:flex; gap:14px; margin-top: 28px; flex-wrap: wrap; }

.status-panel{
  margin-top: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow:hidden;
}
.status-panel .row{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
}
.status-panel .cell{
  padding: 18px 22px;
  border-right: 1px solid var(--line);
}
.status-panel .cell:last-child{ border-right:none; }
.status-panel .cell .k{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.72rem;
  color: var(--muted);
  text-transform:uppercase;
  letter-spacing:0.08em;
  display:block; margin-bottom:6px;
}
.status-panel .cell .v{
  font-family:'IBM Plex Mono', monospace;
  font-size:1.05rem;
  color: var(--accent-strong);
  display:flex; align-items:center; gap:7px;
}
.status-panel .cell .v .pulse{
  width:7px; height:7px; border-radius:50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---------- sections ---------- */
section{ padding: 56px 0; }
section.alt{ background: var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section-head{ max-width: 640px; margin-bottom: 36px; }
.section-head p{ color: var(--muted); }

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-2{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.card{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}
.card .idx{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.75rem;
  color: var(--accent);
  margin-bottom:10px;
  display:block;
}

/* ---------- blog list ---------- */
.post-list{ display:flex; flex-direction:column; }
.post-row{
  display:flex; justify-content:space-between; align-items:baseline;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.post-row:first-child{ border-top: 1px solid var(--line); }
.post-row .date{
  font-family:'IBM Plex Mono', monospace;
  font-size: 0.82rem;
  color: var(--muted);
  white-space:nowrap;
}
.post-row h3{ margin:0; font-size:1.05rem; }
.post-row .excerpt{ color: var(--muted); font-size:0.92rem; margin: 4px 0 0 0; }

article.post-body{ max-width: 680px; }
article.post-body .date{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.82rem;
  color: var(--muted);
  margin-bottom: 6px;
  display:block;
}
article.post-body ol, article.post-body ul{ color: var(--ink); padding-left: 1.2em; }
article.post-body li{ margin-bottom: 0.4em; }

/* ---------- faq ---------- */
.faq-item{ border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq-item h3{ margin-bottom: 8px; }
.faq-item p{ color: var(--muted); margin:0; }

/* ---------- footer ---------- */
footer{
  border-top: 1px solid var(--line);
  padding: 40px 0;
  background: var(--surface);
}
footer .wrap{
  display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:24px;
}
footer .cols{ display:flex; gap:56px; flex-wrap:wrap; }
footer h4{
  font-family:'IBM Plex Mono', monospace;
  font-size:0.75rem;
  text-transform:uppercase; letter-spacing:0.08em;
  color: var(--muted);
  margin: 0 0 12px 0;
}
footer a{ display:block; color: var(--ink); font-size:0.92rem; margin-bottom:8px; }
footer .legal{ font-size:0.82rem; color: var(--muted); margin-top: 24px; }

/* ---------- responsive ---------- */
@media (max-width: 760px){
  nav.primary{ display:none; }
  .grid-3, .grid-2{ grid-template-columns: 1fr; }
  .status-panel .row{ grid-template-columns: repeat(2, 1fr); }
  .status-panel .cell:nth-child(2n){ border-right:none; }
  .status-panel .cell{ border-bottom: 1px solid var(--line); }
  footer .wrap{ flex-direction:column; }
}

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