/* Manualul Semnera — stil comun. Fără resurse externe: se poate deschide direct de pe disc. */
:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --text: #1b1d21;
  --muted: #5b6270;
  --line: #e2e5ea;
  --accent: #0067c0;
  --accent-soft: #e6f1fb;
  --ok: #0f7b3a;
  --ok-soft: #e3f5e8;
  --warn: #9a5b00;
  --warn-soft: #fff4d6;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 8px 24px rgba(16, 24, 40, .08);
  --radius: 12px;
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", Consolas, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --surface: #1f2228;
    --text: #eceef2;
    --muted: #a3aab8;
    --line: #30343c;
    --accent: #5aaef5;
    --accent-soft: #17324b;
    --ok: #63d28b;
    --ok-soft: #173224;
    --warn: #f1c05b;
    --warn-soft: #3a2e12;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.62 var(--font); -webkit-text-size-adjust: 100%; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
img { max-width: 100%; height: auto; display: block; }

.layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); max-width: 1240px; margin: 0 auto; }
nav.toc { position: sticky; top: 0; align-self: start; height: 100vh; overflow-y: auto; padding: 28px 18px 28px 24px; }
nav.toc .brand { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; text-decoration: none; color: var(--text); }
nav.toc .brand .mark { width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, #0b7bdc, #0052a3); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 15px; }
nav.toc .brand b { display: block; line-height: 1.15; }
nav.toc .brand span { color: var(--muted); font-size: 12.5px; }
nav.toc h4 { margin: 18px 0 6px; font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
nav.toc ol, nav.toc ul { list-style: none; margin: 0; padding: 0; }
nav.toc li a { display: block; padding: 5px 10px; border-radius: 7px; color: var(--text); text-decoration: none; font-size: 14.5px; }
nav.toc li a:hover { background: var(--accent-soft); color: var(--accent); }
nav.toc .switch { margin-top: 22px; font-size: 13.5px; color: var(--muted); }

main { padding: 28px 28px 80px 12px; min-width: 0; }
.hero { background: linear-gradient(135deg, #0b6fcc 0%, #0a4f98 100%); color: #fff; border-radius: 18px; padding: 40px 40px 36px; box-shadow: var(--shadow); }
.hero .eyebrow { font-size: 13px; letter-spacing: .1em; text-transform: uppercase; opacity: .85; }
.hero h1 { margin: 6px 0 10px; font-size: clamp(30px, 4.2vw, 42px); line-height: 1.12; letter-spacing: -.01em; text-wrap: balance; }
.hero p { margin: 0; max-width: 62ch; font-size: 17.5px; opacity: .95; }
.hero .facts { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero .facts span { background: rgba(255, 255, 255, .16); border: 1px solid rgba(255, 255, 255, .22); padding: 5px 12px; border-radius: 999px; font-size: 13.5px; }

section { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 34px; margin-top: 22px; }
section > h2 { margin: 0 0 6px; font-size: 25px; line-height: 1.2; letter-spacing: -.005em; display: flex; align-items: center; gap: 12px; text-wrap: balance; }
section > h2 .step { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-size: 16px; font-weight: 700; }
@media (prefers-color-scheme: dark) { section > h2 .step { color: #0b1420; } }
section > .lead { color: var(--muted); margin: 0 0 14px; font-size: 16.5px; max-width: 70ch; }
h3 { margin: 26px 0 6px; font-size: 18.5px; }
p, li { max-width: 74ch; }
ol.steps { counter-reset: s; list-style: none; padding: 0; margin: 14px 0; }
ol.steps > li { counter-increment: s; position: relative; padding: 2px 0 10px 40px; }
ol.steps > li::before { content: counter(s); position: absolute; left: 0; top: 2px; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--accent); color: var(--accent); display: grid; place-items: center; font-size: 13.5px; font-weight: 700; }
kbd, .ui { font: inherit; font-weight: 600; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 1px 7px; white-space: nowrap; }
code { font: 14px var(--mono); background: var(--bg); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; overflow-wrap: anywhere; }

figure { margin: 20px 0 8px; }
figure a { display: block; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow); background: #fff; }
figure.narrow { max-width: 620px; }
figcaption { color: var(--muted); font-size: 14px; margin-top: 9px; max-width: 80ch; }
figcaption b { color: var(--text); }

.note { border-radius: 10px; padding: 12px 16px; margin: 16px 0; border: 1px solid transparent; max-width: 80ch; }
.note b:first-child { display: block; margin-bottom: 2px; }
.note.info { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 25%, transparent); }
.note.ok { background: var(--ok-soft); border-color: color-mix(in srgb, var(--ok) 25%, transparent); }
.note.warn { background: var(--warn-soft); border-color: color-mix(in srgb, var(--warn) 30%, transparent); }

.table-wrap { overflow-x: auto; margin: 14px 0; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12.5px; letter-spacing: .05em; text-transform: uppercase; color: var(--muted); font-weight: 600; background: var(--bg); }
tr:last-child td { border-bottom: 0; }
.badge { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 7px; color: #fff; font-weight: 700; font-size: 12.5px; margin-right: 10px; vertical-align: middle; }
td.tok { white-space: nowrap; font-weight: 600; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 16px 0; }
.grid figure { margin: 0; }
.grid figure a { box-shadow: none; }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; background: var(--bg); }
.card b { display: block; margin-bottom: 3px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

.diagram { margin: 18px 0 4px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); padding: 10px; overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 620px; height: auto; }
.diagram .box { fill: var(--surface); stroke: var(--line); }
.diagram .hl { fill: var(--accent-soft); stroke: var(--accent); }
.diagram text { fill: var(--text); font: 14px var(--font); }
.diagram .small { fill: var(--muted); font-size: 12px; }
.diagram .wire { stroke: var(--accent); stroke-width: 2; fill: none; }
.diagram .arrow { fill: var(--accent); }

details { border: 1px solid var(--line); border-radius: 10px; padding: 0 16px; margin: 10px 0; background: var(--bg); }
details summary { cursor: pointer; padding: 12px 0; font-weight: 600; }
details[open] summary { border-bottom: 1px solid var(--line); margin-bottom: 10px; }
footer { color: var(--muted); font-size: 13.5px; margin-top: 26px; padding: 0 6px; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  nav.toc { position: static; height: auto; padding: 18px 16px 0; }
  nav.toc ol, nav.toc ul { display: flex; flex-wrap: wrap; gap: 2px 4px; }
  main { padding: 16px 16px 60px; }
  .hero { padding: 28px 22px; }
  section { padding: 22px 18px; }
}
@media print {
  body { background: #fff; }
  .layout { display: block; }
  nav.toc { display: none; }
  main { padding: 0; }
  section, .hero { box-shadow: none; break-inside: auto; }
  figure { break-inside: avoid; }
  .hero { background: #0a5cab !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}