/* Shared styles for the SMART LAB circuit and code pages (matches the dashboard). */

:root {
  --bg: #0a0f1c;
  --card: #121a2b;
  --card-2: #182238;
  --line: #233150;
  --text: #eef3ff;
  --muted: #8d9bb8;
  --accent: #4f8cff;
  --ok: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
  --temp: #ff8a4c;
  --hum: #38bdf8;
  --gas: #a78bfa;
  --people: #34d399;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 20px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f2f5fb;
    --card: #ffffff;
    --card-2: #f4f7fc;
    --line: #e1e7f2;
    --text: #0f172a;
    --muted: #64748b;
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  }
}

/* Light colours on demand: used when exporting the diagram and when printing. */
html.force-light {
  --bg: #ffffff;
  --card: #ffffff;
  --card-2: #f4f7fc;
  --line: #e1e7f2;
  --text: #0f172a;
  --muted: #64748b;
  --shadow: none;
}

* { box-sizing: border-box; }

/* Elements marked hidden stay hidden, whatever their display style. */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a { color: var(--accent); }

.wrap {
  max-width: 1100px;
  margin: auto;
  padding: 16px 16px 40px;
}

/* Top bar + navigation */

.topbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}

.logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #4f8cff, #7c5cff);
  color: #fff;
  flex: 0 0 auto;
}

.brand { flex: 1; min-width: 160px; }
.brand h1 { margin: 0; font-size: 20px; font-weight: 800; }
.brand p { margin: 2px 0 0; font-size: 13px; color: var(--muted); }

.nav {
  display: inline-flex;
  padding: 4px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--line);
}

.nav a {
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
}

.nav a.on { background: var(--accent); color: #fff; }
.nav a:not(.on):hover { color: var(--text); }

/* Cards */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

.card h2 { margin: 0 0 6px; font-size: 18px; }
.card > p { margin: 0 0 14px; color: var(--muted); font-size: 14px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.grid .card { margin-bottom: 0; }

.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.pin {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--card-2);
  border: 1px solid var(--line);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

/* Tables */

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 9px 8px; border-top: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; border-top: 0; }

.table-scroll { overflow-x: auto; }

/* Callouts */

.note {
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 14px;
  margin-top: 12px;
  background: rgba(79, 140, 255, 0.1);
  border: 1px solid rgba(79, 140, 255, 0.3);
}

.note.warn { background: rgba(245, 158, 11, 0.1); border-color: rgba(245, 158, 11, 0.35); }
.note.bad { background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.35); }

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 12px;
  border: 0;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

.btn.ghost { background: var(--card-2); color: var(--text); border: 1px solid var(--line); }
.btn:hover { filter: brightness(1.08); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; }

pre.ascii {
  margin: 10px 0 0;
  padding: 14px;
  border-radius: 12px;
  background: var(--card-2);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.5;
  overflow-x: auto;
}

ol.steps { margin: 0; padding-left: 20px; }
ol.steps li { margin: 6px 0; }

.foot { text-align: center; color: var(--muted); font-size: 12px; margin-top: 24px; }

@media (max-width: 520px) {
  .brand p { display: none; }
  .nav { width: 100%; }
  .nav a { flex: 1; text-align: center; padding: 8px 6px; }
  .card { padding: 16px; }
}

/* Install button */

.install {
  border: 0;
  border-radius: 12px;
  padding: 9px 14px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.install[hidden] { display: none; }

/* Bottom tab bar (phones), same as the dashboard */

.tabbar {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  background: rgba(10, 15, 28, 0.78);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}

@media (prefers-color-scheme: light) {
  .tabbar { background: rgba(242, 245, 251, 0.82); }
}

.tabbar-in { display: flex; height: 64px; }

.tabbar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
}

.tabbar a.on { color: var(--accent); }

@media (max-width: 760px) {
  .tabbar { display: block; }
  .nav { display: none; }
  body { padding-bottom: calc(64px + env(safe-area-inset-bottom)); }
  .wrap { padding-top: calc(16px + env(safe-area-inset-top)); }
}

/* Download buttons */

.dl-bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 14px; }

.dl-bar button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--card-2);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.dl-bar button:first-child { background: var(--accent); border-color: var(--accent); color: #fff; }
.dl-bar button:hover { filter: brightness(1.06); }

/* Print / Save as PDF: light colours, no app chrome, nothing cut off. */

@media print {
  :root, html.force-light {
    --bg: #ffffff;
    --card: #ffffff;
    --card-2: #f4f7fc;
    --line: #d5dce8;
    --text: #0f172a;
    --muted: #475569;
    --shadow: none;
  }

  @page { size: A4 landscape; margin: 10mm; }

  body { background: #fff; padding: 0 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .wrap { max-width: none; padding: 0 !important; }
  .nav, .tabbar, .install, .dl-bar, .swipe-hint, .foot, .topbar .logo { display: none !important; }
  .topbar { margin-bottom: 8px; }
  .brand p { display: block !important; }
  .card { box-shadow: none; break-inside: avoid; page-break-inside: avoid; }
  .grid { display: block; columns: 3; column-gap: 10px; }
  .grid .card { display: block; margin: 0 0 10px; break-inside: avoid; page-break-inside: avoid; }
  .grid + .card { margin-top: 0 !important; padding: 10px 14px; }
  .grid + .card > p { display: none; }
  .grid + .card th, .grid + .card td { padding: 3px 6px; }
  .grid + .card .pin { padding: 0 6px; }
  .card { padding: 14px; margin-bottom: 10px; }
  body { font-size: 12px; }
  table { font-size: 12px; }
  th, td { padding: 5px 6px; }
  .note { font-size: 11.5px; padding: 8px 10px; margin-top: 8px; }
  pre.ascii { font-size: 11px; padding: 8px; }
  .card h2 { font-size: 15px; }
  .diagram-scroll { overflow: visible; margin: 0; }
  .diagram { min-width: 0 !important; }
  .note { break-inside: avoid; }
  a { color: inherit; text-decoration: none; }
}