/* Raspberry Pi MQTT Monitor — docs site
   Plain CSS, auto light/dark via prefers-color-scheme. No external dependencies. */

:root {
  --accent: #c51a4a;          /* Raspberry Pi red */
  --accent-2: #6cc04a;        /* Raspberry Pi green */
  --bg: #ffffff;
  --bg-soft: #f5f6f8;
  --bg-code: #f3f4f6;
  --sidebar-bg: #fbfbfc;
  --text: #1f2328;
  --text-soft: #59636e;
  --border: #e2e5e9;
  --link: #c51a4a;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #ff5277;
    --accent-2: #7bd354;
    --bg: #0d1117;
    --bg-soft: #161b22;
    --bg-code: #161b22;
    --sidebar-bg: #0f141b;
    --text: #e6edf3;
    --text-soft: #9198a1;
    --border: #2a313a;
    --link: #ff7596;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ── Header ─────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 56px;
  padding: 0 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.site-header .brand {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  font-size: 1.02rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-header .brand .brand-logo { height: 28px; width: auto; display: block; }
h1 .h1-logo { height: 1.4em; width: auto; vertical-align: -0.3em; margin-right: 0.35em; }
.site-header .spacer { flex: 1; }
.site-header a.gh {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.site-header a.gh:hover { color: var(--text); border-color: var(--accent); }

.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  width: 38px;
  height: 34px;
  font-size: 1.1rem;
  cursor: pointer;
}

/* ── Layout ─────────────────────────────────────────── */
.layout { display: flex; align-items: flex-start; }

.sidebar {
  flex: 0 0 240px;
  position: sticky;
  top: 56px;
  align-self: flex-start;
  height: calc(100vh - 56px);
  overflow-y: auto;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 20px 12px;
}
.sidebar nav a {
  display: block;
  padding: 8px 12px;
  margin: 2px 0;
  border-radius: 6px;
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.94rem;
}
.sidebar nav a:hover { background: var(--bg-soft); color: var(--text); }
.sidebar nav a.active {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-weight: 600;
  border-left: 3px solid var(--accent);
  padding-left: 9px;
}
.sidebar .nav-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  padding: 14px 12px 4px;
}

.content {
  flex: 1 1 auto;
  min-width: 0;
  padding: 36px clamp(20px, 5vw, 64px) 80px;
  max-width: 960px;
}

/* ── Typography & elements ──────────────────────────── */
h1 { font-size: 2rem; margin: 0 0 0.4em; line-height: 1.2; }
h2 {
  font-size: 1.4rem;
  margin: 1.8em 0 0.6em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--border);
}
h3 { font-size: 1.12rem; margin: 1.5em 0 0.5em; }
p { margin: 0.7em 0; }
a { color: var(--link); }

.lead { font-size: 1.15rem; color: var(--text-soft); }

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.12em 0.4em;
}
pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  line-height: 1.5;
}
pre code { background: none; border: none; padding: 0; font-size: 0.86rem; }

/* Code block with GitHub-style copy button */
.codeblock { position: relative; margin: 1.2em 0; }
.codeblock pre { margin: 0; padding-right: 52px; }
.codeblock.wrap pre {
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: visible;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-soft);
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s, background 0.15s;
}
.codeblock:hover .copy-btn,
.copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { color: var(--accent); border-color: var(--accent); }
.copy-btn.copied { color: var(--accent-2); border-color: var(--accent-2); opacity: 1; }
.copy-btn svg { width: 16px; height: 16px; fill: currentColor; }

blockquote {
  margin: 1.2em 0;
  padding: 12px 16px;
  background: var(--bg-soft);
  border-left: 4px solid var(--accent-2);
  border-radius: 0 6px 6px 0;
  color: var(--text-soft);
}
blockquote p { margin: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: 0.94rem;
}
th, td {
  text-align: left;
  padding: 9px 14px;
  border: 1px solid var(--border);
}
thead th { background: var(--bg-soft); }
tbody tr:nth-child(even) { background: var(--bg-soft); }

img { max-width: 100%; height: auto; border-radius: 8px; }
figure { margin: 1.5em 0; text-align: center; }

hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }

/* ── Hero / home ────────────────────────────────────── */
.hero { text-align: center; margin-bottom: 2em; }
.hero img { box-shadow: var(--shadow); }
.badges { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin: 1em 0; }
.badges img { border-radius: 3px; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  border: 1px solid var(--accent);
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary { background: transparent; color: var(--accent); }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.4em 0; }

/* feature + link cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 1.5em 0; }
.card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  background: var(--bg);
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
}
a.card:hover { border-color: var(--accent); transform: translateY(-2px); transition: 0.15s; }
.card h3 { margin: 0 0 6px; color: var(--accent); }
.card p { margin: 0; color: var(--text-soft); font-size: 0.92rem; }

.feature-list { list-style: none; padding: 0; }
.feature-list li { padding: 8px 0 8px 28px; position: relative; }
.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent-2);
  font-weight: 700;
}

/* ── Footer ─────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px clamp(20px, 5vw, 64px);
  color: var(--text-soft);
  font-size: 0.88rem;
}
.site-footer a { color: var(--text-soft); }

/* backdrop for mobile drawer */
.backdrop {
  display: none;
  position: fixed;
  inset: 56px 0 0 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 19;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .hamburger { display: inline-block; }
  .sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    z-index: 20;
    width: 260px;
    height: calc(100vh - 56px);
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow); }
  .backdrop.show { display: block; }
  .content { padding-top: 24px; }
}