/* SensorPulse user manual – screen + print */
:root {
  --manual-bg: #0f1117;
  --manual-surface: #181b24;
  --manual-border: #343b4d;
  --manual-accent: #5b9aff;
  --manual-text: #eceff4;
  --manual-muted: #9ca6b8;
  --manual-tip: #1e3a5f;
  --manual-warn: #4a3520;
}

html[data-theme="grey"] {
  --manual-bg: #c5cad3;
  --manual-surface: #d2d7e0;
  --manual-border: #9ea6b4;
  --manual-accent: #1540a0;
  --manual-text: #2a3344;
  --manual-muted: #4a5568;
  --manual-tip: #dbeafe;
  --manual-warn: #fef3c7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--manual-text);
  background: var(--manual-bg);
}

.manual-toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--manual-surface);
  border-bottom: 1px solid var(--manual-border);
}

.manual-toolbar a, .manual-toolbar button {
  font: inherit;
  color: var(--manual-accent);
  background: transparent;
  border: 1px solid var(--manual-border);
  border-radius: 8px;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  text-decoration: none;
}

.manual-toolbar a:hover, .manual-toolbar button:hover {
  border-color: var(--manual-accent);
}

.manual-wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.manual-cover {
  background: var(--manual-surface);
  border: 1px solid var(--manual-border);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

.manual-cover h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
}

.manual-cover .subtitle {
  color: var(--manual-muted);
  font-size: 1.1rem;
  margin: 0 0 1rem;
}

.manual-cover .version {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: rgba(91, 154, 255, 0.15);
  color: var(--manual-accent);
  font-size: 0.9rem;
}

nav.manual-toc {
  background: var(--manual-surface);
  border: 1px solid var(--manual-border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

nav.manual-toc h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
}

nav.manual-toc ol {
  margin: 0;
  padding-left: 1.25rem;
  columns: 2;
  column-gap: 2rem;
}

nav.manual-toc a {
  color: var(--manual-accent);
  text-decoration: none;
}

nav.manual-toc a:hover { text-decoration: underline; }

section.manual-chapter {
  background: var(--manual-surface);
  border: 1px solid var(--manual-border);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
}

section.manual-chapter h2 {
  margin: 0 0 1rem;
  font-size: 1.45rem;
  border-bottom: 1px solid var(--manual-border);
  padding-bottom: 0.5rem;
}

section.manual-chapter h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.05rem;
  color: var(--manual-accent);
}

section.manual-chapter ol, section.manual-chapter ul {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.35rem;
}

section.manual-chapter li { margin: 0.35rem 0; }

.tip, .warn {
  border-radius: 8px;
  padding: 0.85rem 1rem;
  margin: 1rem 0;
  border-left: 4px solid var(--manual-accent);
}

.tip { background: var(--manual-tip); }
.warn { background: var(--manual-warn); border-left-color: #fbbf24; }

code, kbd {
  background: rgba(0,0,0,0.25);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-family: Consolas, monospace;
  font-size: 0.9em;
}

html[data-theme="grey"] code,
html[data-theme="grey"] kbd {
  background: rgba(255,255,255,0.5);
}

figure.manual-fig {
  margin: 1rem 0;
  text-align: center;
}

figure.manual-fig img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--manual-border);
}

figure.manual-fig figcaption {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--manual-muted);
}

@media (max-width: 640px) {
  nav.manual-toc ol { columns: 1; }
}

@media print {
  .manual-toolbar { display: none; }
  body { background: #fff; color: #111; font-size: 11pt; }
  .manual-wrap { max-width: none; padding: 0; }
  .manual-cover, section.manual-chapter, nav.manual-toc {
    background: #fff;
    border-color: #ccc;
    break-inside: avoid;
    page-break-inside: avoid;
  }
  section.manual-chapter { break-before: page; page-break-before: always; }
  section.manual-chapter:first-of-type { break-before: auto; page-break-before: auto; }
  nav.manual-toc { break-after: page; page-break-after: always; }
  a { color: #111; text-decoration: none; }
  .tip, .warn { border: 1px solid #ccc; background: #f5f5f5; }
}