@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&family=DM+Mono:wght@400;500&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Tokens ── */
:root {
  --bg:          oklch(0.97 0.008 225);
  --surface:     oklch(1 0 0);
  --surface2:    oklch(0.94 0.008 225);
  --border:      oklch(0.88 0.01 225);
  --text:        oklch(0.16 0.015 225);
  --text-muted:  oklch(0.48 0.015 225);
  --accent:      oklch(0.52 0.18 190);
  --accent-dim:  oklch(0.52 0.18 190 / 0.12);
  --accent-glow: oklch(0.52 0.18 190 / 0.25);
  --online:      oklch(0.60 0.18 145);
  --shadow:      oklch(0.16 0.015 225 / 0.08);
  --radius:      13px;
  --nav-h:       64px;
  --max-w:       1100px;
}

[data-theme="dark"] {
  --bg:          oklch(0.11 0.015 230);
  --surface:     oklch(0.16 0.015 230);
  --surface2:    oklch(0.20 0.015 230);
  --border:      oklch(0.26 0.015 230);
  --text:        oklch(0.93 0.008 230);
  --text-muted:  oklch(0.60 0.01 230);
  --accent:      oklch(0.65 0.18 190);
  --accent-dim:  oklch(0.65 0.18 190 / 0.15);
  --accent-glow: oklch(0.65 0.18 190 / 0.3);
  --online:      oklch(0.70 0.18 145);
  --shadow:      oklch(0 0 0 / 0.3);
}

/* ── Base ── */
html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.25s, color 0.25s;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus { outline: 2px solid var(--accent); outline-offset: 3px; }

code {
  font-family: 'DM Mono', monospace;
  font-size: 0.875em;
  background: var(--surface2);
  padding: 0.15em 0.45em;
  border-radius: 4px;
  color: var(--text);
}

/* ── Layout ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

main { flex: 1; }

/* ── Nav ── */
.site-nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background 0.25s, border-color 0.25s;
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-logo {
  display: flex; align-items: center; gap: 0.6rem;
  text-decoration: none; color: var(--text);
  font-weight: 600; font-size: 1rem; flex-shrink: 0;
}
.nav-logo:hover { text-decoration: none; }
.nav-logo img { height: 32px; width: auto; }
[data-theme="dark"] .nav-logo img { filter: brightness(0) invert(1); }

.nav-links {
  display: flex; align-items: center; gap: 0.25rem; margin-left: 0.5rem;
}

.nav-link {
  padding: 0.4rem 0.85rem; border-radius: 6px;
  font-size: 0.925rem; text-decoration: none;
  color: var(--text-muted);
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: var(--text); background: var(--surface2); text-decoration: none; }
.nav-link[aria-current="page"],
.nav-link.active {
  color: var(--accent); background: var(--accent-dim); font-weight: 500;
}

.nav-spacer { flex: 1; }

.nav-icon-btn {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px;
  border: 1px solid var(--border);
  background: none; color: var(--text-muted); cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.nav-icon-btn:hover { background: var(--surface2); color: var(--text); }
.nav-icon-btn svg { width: 18px; height: 18px; }

.nav-hamburger { display: none; margin-left: 0.5rem; }

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  border-top: 1px solid var(--border);
  padding: 0.5rem 1.25rem 1rem;
  background: var(--surface);
}
.nav-mobile-menu.open { display: flex; }

.nav-mobile-link {
  padding: 0.75rem; border-radius: 8px;
  font-size: 1rem; color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
  display: block;
}
.nav-mobile-link:hover { color: var(--text); background: var(--surface2); text-decoration: none; }
.nav-mobile-link[aria-current="page"] {
  color: var(--accent); background: var(--accent-dim); font-weight: 500;
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: auto;
}
.site-footer a { color: var(--accent); }

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 1px 4px var(--shadow);
  transition: background 0.25s, border-color 0.25s;
}
.card-accent-top { border-top: 3px solid var(--accent); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.65rem 1.4rem; border-radius: 8px;
  font-size: 0.9rem; font-weight: 500;
  text-decoration: none; cursor: pointer; border: none;
  transition: opacity 0.15s, transform 0.1s;
}
.btn:hover { opacity: 0.88; transform: translateY(-1px); text-decoration: none; }
.btn-primary { background: var(--accent); color: white; }

/* ── Grids ── */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; }

/* ── Section ── */
.section { padding: 3rem 2rem; }
.section > .container { }
.section-title {
  font-size: 1.4rem; font-weight: 600;
  letter-spacing: -0.02em; margin-bottom: 1.25rem;
}
.section-note { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 1.25rem; }

/* ── Page header ── */
.page-wrap { padding: 3rem 2rem; max-width: var(--max-w); margin: 0 auto; }
.page-header { margin-bottom: 2.5rem; }
.page-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600; letter-spacing: -0.02em; margin-bottom: 0.5rem;
}
.page-subtitle {
  font-size: 1.1rem; color: var(--text-muted);
  max-width: 60ch; text-wrap: pretty;
}

/* ── Article content (rendered markdown) ── */
.article-content > * + * { margin-top: 1em; }
.article-content h2 {
  font-size: 1.1rem; font-weight: 600; margin-top: 2em; margin-bottom: 0.875rem;
}
.article-content h3 {
  font-size: 0.975rem; font-weight: 600; margin-top: 1.5em; margin-bottom: 0.5rem;
}
.article-content code {
  color: var(--accent);
  background: var(--accent-dim);
}

.article-content ul { padding-left: 1.25rem; color: var(--text-muted); font-size: 0.9rem; }
.article-content ul li + li { margin-top: 0.35rem; }
.article-content blockquote {
  border-left: 3px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.75rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ── Home: Hero ── */
.hero {
  position: relative; min-height: 520px;
  display: flex; align-items: flex-end; overflow: hidden;
}
.hero-img-wrap { position: absolute; inset: 0; }
.hero-img { width: 100%; height: 100%; object-fit: cover; object-position: center 60%; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, oklch(0.1 0.02 225 / 0.25) 0%, oklch(0.1 0.02 225 / 0.82) 100%);
}
.hero-content {
  position: relative; z-index: 1;
  max-width: var(--max-w); width: 100%; margin: 0 auto;
  padding: 4rem 2rem 3.5rem; color: white;
}
.hero-logo { height: 60px; width: auto; margin-bottom: 1.25rem; filter: brightness(0) invert(1) drop-shadow(0 2px 8px oklch(0 0 0 / 0.4)); }
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 600; letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  text-shadow: 0 2px 12px oklch(0 0 0 / 0.3);
}
.hero-desc {
  font-size: 1.15rem; max-width: 55ch;
  opacity: 0.88; margin-bottom: 1.5rem; text-wrap: pretty;
}
.hero-freq {
  display: inline-flex; flex-wrap: wrap; align-items: center;
  gap: 0.5rem 0.75rem;
  background: oklch(1 0 0 / 0.12); backdrop-filter: blur(8px);
  border: 1px solid oklch(1 0 0 / 0.2); border-radius: 10px;
  padding: 0.65rem 1rem; font-size: 0.875rem;
}
.hero-freq code {
  background: oklch(1 0 0 / 0.15); color: white;
  font-family: 'DM Mono', monospace; font-size: 0.82em;
}
.hero-freq-sep { opacity: 0.4; }
.hero-freq svg { opacity: 0.8; width: 20px; height: 20px; }

/* ── Home: feature cards ── */
.home-section { padding: 3rem 2rem; }
.card-icon { color: var(--accent); margin-bottom: 0.75rem; }
.card-icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; }
.card p { color: var(--text-muted); font-size: 0.9375rem; }

/* ── Home network status card ──*/
#network-status-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  .status-dot {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 50%;
    background: #9ca3af;
    flex-shrink: 0;
  }
  .mesh-summary {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #6b7280;
  }
  #network-status-card[data-status="ok"]       .status-dot { background: #10b981; }
  #network-status-card[data-status="degraded"] .status-dot { background: #f59e0b; }
  #network-status-card[data-status="down"]     .status-dot { background: #ef4444; }
  #network-status-card[data-status="error"]    .status-dot { background: #6b7280; }

/* ── Home: freq callout ── */
.freq-card-label {
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent); margin-bottom: 0.5rem;
}
.freq-card-title {
  font-size: 1.5rem; font-weight: 600;
  letter-spacing: -0.02em; margin-bottom: 0.75rem;
}
.freq-card-body { color: var(--text-muted); margin-bottom: 1.5rem; }
.freq-params {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem; margin-bottom: 1.75rem;
}
.freq-param { display: flex; flex-direction: column; gap: 0.3rem; }
.freq-param-label {
  font-size: 0.75rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-muted); font-weight: 500;
}
.freq-param code {
  font-family: 'DM Mono', monospace; font-size: 1rem;
  color: var(--text); background: var(--surface2);
  padding: 0.3em 0.6em; border-radius: 6px;
}

/* ── About page ── */
.about-grid {
  display: grid; grid-template-columns: 1fr 340px;
  gap: 2rem; align-items: start;
}
.card-section-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.875rem; }
.card p + p { margin-top: 1rem; }

.link-list { display: flex; flex-direction: column; gap: 0.5rem; }
.link-list-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0.75rem; border-radius: 8px;
  background: var(--surface2); text-decoration: none; color: var(--text);
  font-size: 0.9rem; transition: background 0.15s;
}
.link-list-item:hover { background: var(--border); text-decoration: none; }
.link-list-item svg { color: var(--accent); flex-shrink: 0; }
.link-list-url { margin-left: auto; color: var(--text-muted); font-size: 0.8rem; }

.community-chat-list { display: flex; flex-direction: column; gap: 0.5rem; }
.community-chat-list-label {
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 0.25rem; margin-top: 1.25rem;
}
.community-chat-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.55rem 0.75rem; border-radius: 8px;
  background: var(--surface2); text-decoration: none; color: var(--text);
  font-size: 0.875rem; transition: background 0.15s;
}
.community-chat-item:hover { background: var(--border); text-decoration: none; }
.community-chat-note { font-size: 0.75rem; color: var(--text-muted); }

.contact-card .btn-primary { display: block; text-align: center; margin-bottom: 1.25rem; }

/* ── Coverage page ── */
.map-card-link { display: block; text-decoration: none; margin-bottom: 2rem; }
.map-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); height: 240px;
  display: flex; align-items: flex-end;
  background: var(--surface2); color: var(--accent);
  transition: box-shadow 0.2s, transform 0.15s;
}
.map-card-link:hover .map-card {
  box-shadow: 0 8px 32px var(--shadow); transform: translateY(-2px);
}
.map-card-bg { position: absolute; inset: 0; color: var(--accent); }
.map-card-content {
  position: relative; z-index: 1; width: 100%; padding: 1.5rem 2rem;
  background: linear-gradient(to top, var(--surface) 60%, transparent);
  color: var(--text);
}
.map-card-badge {
  font-size: 0.72rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--accent); margin-bottom: 0.35rem;
}
.map-card-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 0.35rem; letter-spacing: -0.01em; }
.map-card-desc { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 1rem; }
.map-card-btn {
  display: inline-flex; align-items: center;
  padding: 0.55rem 1.2rem; border-radius: 8px;
  background: var(--accent); color: white;
  font-size: 0.875rem; font-weight: 500;
}

.repeater-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem; margin-bottom: 2.5rem;
}
.repeater-card { }
.repeater-header { margin-bottom: 1rem; }
.repeater-name {
  display: flex; align-items: center; gap: 0.5rem;
  font-weight: 600; font-size: 0.975rem; margin-bottom: 0.3rem;
}
.repeater-location {
  display: flex; align-items: center; gap: 0.3rem;
  font-size: 0.82rem; color: var(--text-muted);
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.status-dot.online { background: var(--online); }
.status-dot.pending { background: oklch(0.75 0.12 60); }
.badge-soon {
  display: inline-block; font-size: 0.7rem; font-weight: 600;
  padding: 0.15em 0.5em; border-radius: 4px;
  background: oklch(0.75 0.12 60 / 0.2); color: oklch(0.55 0.12 60);
}
.repeater-specs {
  display: flex; flex-direction: column; gap: 0.35rem;
  border-top: 1px solid var(--border); padding-top: 0.875rem;
}
.spec-row {
  display: flex; justify-content: space-between;
  font-size: 0.82rem; gap: 1rem;
}
.spec-row span:first-child { color: var(--text-muted); flex-shrink: 0; }
.spec-row span:last-child { text-align: right; }

/* ── How-To index ── */
.howto-section { margin-bottom: 2.5rem; }
.howto-card {
  display: flex; align-items: flex-start; gap: 1rem;
}
.howto-card svg { color: var(--accent); flex-shrink: 0; margin-top: 0.1rem; }
.howto-card h4 { font-size: 0.975rem; font-weight: 600; margin-bottom: 0.3rem; }
.howto-card p { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.howto-card .ext-link { font-size: 0.875rem; }

a.howto-card-link {
  display: flex; align-items: flex-start; gap: 1rem;
  text-decoration: none; color: var(--text);
  cursor: pointer;
}
a.howto-card-link:hover { text-decoration: none; }
a.howto-card-link:hover .card { box-shadow: 0 4px 16px var(--shadow); }
a.howto-card-link .card { width: 100%; }
.howto-link { font-size: 0.85rem; color: var(--accent); font-weight: 500; margin-top: 0.4rem; display: inline-block; }

.equip-details summary {
  display: flex; align-items: center; gap: 0.75rem;
  cursor: pointer; font-weight: 600; font-size: 0.975rem;
  list-style: none; padding: 0;
}
.equip-details summary::-webkit-details-marker { display: none; }
.equip-icon { color: var(--accent); display: flex; }
.equip-chevron { margin-left: auto; color: var(--text-muted); font-size: 0.8rem; }
.equip-details[open] .equip-chevron-closed { display: none; }
.equip-details:not([open]) .equip-chevron-open { display: none; }
.equip-body {
  margin-top: 1rem; display: flex; flex-direction: column;
  gap: 0.5rem; border-top: 1px solid var(--border); padding-top: 1rem;
}
.equip-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 0.75rem; border-radius: 8px;
  background: var(--surface2); text-decoration: none; color: var(--text);
  font-size: 0.875rem; transition: background 0.15s;
}
.equip-item:hover { background: var(--border); text-decoration: none; }
.equip-item-name { flex: 1; font-weight: 500; }
.equip-item-note { font-size: 0.78rem; color: var(--text-muted); }

/* ── How-To article (sub-pages) ── */
.back-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  color: var(--accent); font-size: 0.875rem; font-weight: 500;
  text-decoration: none; margin-bottom: 1.75rem;
}
.back-link:hover { text-decoration: underline; }

.channel-list { display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.5rem; }
.channel-row {
  display: flex; align-items: baseline; gap: 0.75rem;
  padding: 0.45rem 0.6rem; border-radius: 6px;
  background: var(--surface2); font-size: 0.875rem;
}
.channel-tag {
  font-family: 'DM Mono', monospace; font-size: 0.85rem;
  color: var(--accent); background: var(--accent-dim);
  padding: 0.15em 0.5em; border-radius: 4px; flex-shrink: 0;
}
.channel-desc { color: var(--text-muted); }

.step-list { display: flex; flex-direction: column; gap: 0.6rem; margin-top: 0.75rem; }
.step {
  background: var(--surface2); border-radius: 8px;
  padding: 0.75rem 1rem; font-size: 0.875rem; color: var(--text-muted);
}
.step-label {
  display: block; font-weight: 600; color: var(--text); margin-bottom: 0.25rem;
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em;
}

.bom-list { display: flex; flex-direction: column; gap: 0.5rem; }
.bom-row {
  display: grid; grid-template-columns: 56px 110px 1fr;
  align-items: center; gap: 0.75rem;
  padding: 0.55rem 0.75rem; border-radius: 8px;
  background: var(--surface2); font-size: 0.875rem;
}
.bom-price { font-family: 'DM Mono', monospace; font-size: 0.8rem; color: var(--online); font-weight: 500; }
.bom-type { color: var(--text-muted); font-size: 0.8rem; }
.bom-name a { color: var(--accent); text-decoration: none; }
.bom-name a:hover { text-decoration: underline; }

.wip-notice {
  background: oklch(0.75 0.12 60 / 0.12);
  border: 1px solid oklch(0.75 0.12 60 / 0.3);
}

/* ── External link ── */
.ext-link {
  color: var(--accent); text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.25em;
}
.ext-link:hover { text-decoration: underline; }
.ext-link svg { width: 13px; height: 13px; flex-shrink: 0; }

/* ── Protected email ── */
.protected-email { cursor: pointer; }

/* ── SVG icons (inline) ── */
.icon { display: inline-block; vertical-align: middle; }

/* ── Responsive ── */
@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero { min-height: 420px; }
  .hero-content { padding: 3rem 1.25rem 2.5rem; }
  .hero-title { font-size: 2.2rem; }
  .hero-freq { font-size: 0.8rem; }
  .home-section, .section { padding: 2rem 1.25rem; }
  .page-wrap { padding: 2rem 1.25rem; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .repeater-grid { grid-template-columns: 1fr; }
  .freq-params { grid-template-columns: 1fr 1fr; }
  .bom-row { grid-template-columns: 52px 1fr; }
  .bom-type { display: none; }
}