/* SA7KZA — amateur radio engineering site
   --bg #15181a  --panel #1b1f22  --line #2c3236
   --text #e8e4d9  --muted #8b9296
   --amber #d98e3f (primary accent)  --teal #5fa8a0 (secondary accent)
   Type: 'JetBrains Mono' for display/labels, 'Inter' for body
*/

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

:root {
  --bg: #15181a;
  --panel: #1b1f22;
  --line: #2c3236;
  --text: #e8e4d9;
  --muted: #8b9296;
  --amber: #d98e3f;
  --teal: #5fa8a0;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--amber); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
img { max-width: 100%; display: block; }
.mono { font-family: 'JetBrains Mono', monospace; }

.wrap-full {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Top bar: only Home + Contact ---------- */
.site-header {
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
}
.site-header .wrap-full {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.callsign {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
  color: var(--text);
}
.callsign span { color: var(--amber); }
.site-header nav { display: flex; gap: 24px; }
.site-header nav a {
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.site-header nav a:hover, .site-header nav a.active { color: var(--teal); text-decoration: none; }

/* ---------- Layout: sidebar + content ---------- */
.layout {
  display: flex;
  gap: 44px;
  align-items: flex-start;
  padding-top: 36px;
}
.sidebar {
  width: 200px;
  flex-shrink: 0;
  position: sticky;
  top: 28px;
}
.sidebar-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  padding-left: 14px;
}
.sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sidebar-nav a {
  display: block;
  padding: 10px 14px;
  border-left: 2px solid transparent;
  border-radius: 0 3px 3px 0;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
}
.sidebar-nav a:hover {
  color: var(--text);
  border-left-color: var(--line);
  background: var(--panel);
  text-decoration: none;
}
.sidebar-nav a.active {
  color: var(--amber);
  border-left-color: var(--amber);
  background: var(--panel);
}
.content { flex: 1; min-width: 0; padding-bottom: 60px; }

/* ---------- Hero / page intro ---------- */
.hero { padding-bottom: 28px; }
.hero .eyebrow {
  font-family: 'JetBrains Mono', monospace;
  color: var(--teal);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.hero h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(34px, 6vw, 52px);
  line-height: 1.08;
  margin: 0 0 16px;
}
.hero h1 span { color: var(--amber); }
.hero p.lead { max-width: 600px; color: var(--muted); font-size: 17px; }

.trace {
  width: 100%;
  height: 16px;
  margin: 36px 0;
  display: block;
}

section { padding: 4px 0 36px; }
h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 18px;
}
h2::before { content: "// "; color: var(--line); }
p { color: var(--text); }
p.muted { color: var(--muted); }

/* ---------- Photo gallery (home QTH photos, project galleries) ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 8px;
}
.gallery .photo-placeholder { margin: 0; }

.photo-placeholder {
  border: 1px dashed var(--line);
  border-radius: 4px;
  background: var(--panel);
  padding: 30px 16px;
  text-align: center;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  margin: 8px 0 24px;
}
.photo-placeholder .ratio { aspect-ratio: 16/10; display: flex; align-items: center; justify-content: center; }

/* ---------- Project page ---------- */
.project-hero { padding: 0 0 16px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.project-hero .tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
  border: 1px solid var(--amber);
  border-radius: 2px;
  padding: 3px 10px;
  margin-bottom: 14px;
}
.project-hero h1 { font-family: 'JetBrains Mono', monospace; font-size: clamp(28px, 4.5vw, 40px); margin: 0 0 12px; }
.project-hero p.lead { color: var(--muted); font-size: 16px; max-width: 600px; }

.specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin: 24px 0;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.specs div .k { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.specs div .v { font-size: 14px; color: var(--text); }

.downloads { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--bg);
  background: var(--amber);
  border: none;
  border-radius: 3px;
  padding: 11px 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn:hover { background: var(--teal); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--teal); border: 1px solid var(--teal); }
.btn.ghost:hover { background: var(--teal); color: var(--bg); }

ul.changelog { list-style: none; padding: 0; margin: 0; }
ul.changelog li { display: flex; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
ul.changelog li:last-child { border-bottom: none; }
ul.changelog .ver { font-family: 'JetBrains Mono', monospace; color: var(--amber); min-width: 70px; }
ul.changelog .desc { color: var(--muted); }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--line); padding: 24px 0 40px; margin-top: 20px; }
footer p { color: var(--muted); font-size: 13px; font-family: 'JetBrains Mono', monospace; }

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  .layout { flex-direction: column; gap: 24px; padding-top: 24px; }
  .sidebar { width: 100%; position: static; }
  .sidebar-nav { flex-direction: row; overflow-x: auto; gap: 8px; padding-bottom: 4px; }
  .sidebar-nav a { border-left: none; border-bottom: 2px solid transparent; white-space: nowrap; border-radius: 3px 3px 0 0; }
  .sidebar-nav a.active, .sidebar-nav a:hover { border-left: none; border-bottom-color: var(--amber); }
  .site-header nav { gap: 16px; }
}