/* LABeCO₂ — Shared stylesheet
   Scientific documentation aesthetic — sober, typographic, institutional.
*/

:root {
  --green: #2DAB47;
  --green-deep: #16752f;
  --green-soft: #d8efdd;
  --ink: #1f1d1b;
  --ink-2: #5b5851;
  --ink-3: #8a857c;
  --paper: #fdfcf8;
  --surface: #f6f3eb;
  --border: #e6e1d8;
  --border-strong: #d4cdbf;
  --warn: #d97757;
  --warn-soft: #f6e6d8;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --sidebar-w: 260px;
  --content-max: 960px;

  --shadow-drawn: 0 2px 0 0 var(--green-deep);
  --shadow-drawn-ink: 0 2px 0 0 var(--ink);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}
a:hover {
  color: var(--green-deep);
  border-bottom-color: var(--green-deep);
}
a.ext::after {
  content: " ↗";
  color: var(--ink-3);
  font-size: 0.85em;
}

body[data-page="methodologie"] .content article p a,
body[data-page="methodologie"] .content article li a,
body[data-page="methodologie"] .content .lede a {
  color: var(--green-deep);
  font-weight: 700;
  border-bottom-color: rgba(22, 117, 47, 0.35);
}
body[data-page="methodologie"] .content article p a:hover,
body[data-page="methodologie"] .content article li a:hover,
body[data-page="methodologie"] .content .lede a:hover {
  color: #0f5f24;
  border-bottom-color: #0f5f24;
}

p { margin: 0 0 1em 0; color: var(--ink-2); }
strong { color: var(--ink); font-weight: 600; }

h1, h2, h3, h4 {
  color: var(--ink);
  margin: 0 0 0.4em 0;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1 { font-size: 40px; font-weight: 700; line-height: 1.1; letter-spacing: -0.022em; }
h2 { font-size: 24px; font-weight: 700; line-height: 1.25; letter-spacing: -0.015em; }
h3 { font-size: 17px; font-weight: 600; line-height: 1.3; }

code, .mono { font-family: var(--font-mono); font-size: 0.92em; }

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  max-width: 1500px;
  margin-inline: auto;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 18px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sb-brand {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 2px 4px 14px 4px;
  border-bottom: 1px solid var(--border);
}
.sb-mark {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: transparent;
  display: grid; place-items: center;
  box-shadow: none;
  flex-shrink: 0;
  overflow: hidden;
}
.sb-mark img { display: block; width: 100%; height: 100%; object-fit: contain; }
.sb-brand-text { display: flex; flex-direction: column; gap: 2px; padding-top: 2px; }
.sb-wordmark {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1;
}
.sb-wordmark .e {
  font-weight: 500;
  font-style: italic;
  color: var(--green);
  text-transform: lowercase;
}
.sb-wordmark sub {
  font-size: 0.7em;
  font-weight: 700;
  vertical-align: baseline;
  position: relative;
  top: 2px;
}
.sb-tagline {
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}

.sb-nav { display: flex; flex-direction: column; gap: 16px; flex: 1; }
.sb-group { display: flex; flex-direction: column; gap: 1px; }
.sb-group-h {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 10px 6px 10px;
}
.sb-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-left: 2px solid transparent;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 500;
  border-radius: 0 4px 4px 0;
  margin-left: -2px;
  border-bottom: none;
  line-height: 1.3;
}
.sb-link:hover {
  color: var(--ink);
  background: rgba(0,0,0,0.025);
}
.sb-link.active {
  border-left-color: var(--green);
  background: var(--green-soft);
  color: var(--green-deep);
  font-weight: 600;
}

.sb-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  overflow: hidden;
  font-size: 12px;
  width: fit-content;
  background: var(--paper);
}
.lang-switch button {
  background: none;
  border: none;
  padding: 4px 10px;
  font-family: inherit;
  font-weight: 500;
  font-size: 12px;
  color: var(--ink-2);
  cursor: pointer;
}
.lang-switch button.on {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 6px;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid transparent;
  background: none;
  color: var(--ink);
  transition: transform 80ms ease, box-shadow 120ms ease;
  border-bottom: none;
}
.btn:hover { color: var(--ink); border-bottom-color: transparent; }
.btn-primary {
  background: var(--green);
  color: white;
  border-color: var(--green-deep);
  box-shadow: var(--shadow-drawn);
}
.btn-primary:hover {
  background: var(--green-deep);
  color: white;
  transform: translateY(1px);
  box-shadow: 0 1px 0 0 var(--green-deep);
}
.btn-ghost {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--ink-3);
}
.btn-sm { font-size: 12px; padding: 5px 10px; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Content ---------- */
.content {
  padding: 56px 64px 96px 64px;
  max-width: calc(var(--content-max) + 128px);
  margin-inline: auto;
  min-width: 0;
}
/* Prevent wide content (large screenshots) from forcing horizontal overflow */
.two-col > *, .doc-layout > *, figure { min-width: 0; }
img { max-width: 100%; }

.page-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  padding: 4px 11px;
  border: 1.5px solid var(--border-strong);
  border-radius: 999px;
  background: var(--paper);
}
.page-tag .dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--green);
}

.lede {
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 640px;
  margin: 16px 0 28px 0;
}

.section {
  padding: 40px 0;
  border-top: 1px dashed var(--border-strong);
}
.section:first-of-type { border-top: none; padding-top: 24px; }
.section-h {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 14px 0;
}

/* ---------- Cards / tables ---------- */
.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--paper);
  padding: 20px 22px;
}
.card.soft {
  background: var(--surface);
}
.card.green {
  background: var(--green-soft);
  border-color: #b4dfbe;
}

table.kit {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
table.kit th, table.kit td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.kit thead th {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  background: var(--surface);
  border-bottom: 1px solid var(--border-strong);
}
table.kit tbody tr:last-child td { border-bottom: none; }
table.kit td.mono, table.kit td .mono { color: var(--ink); }

/* ---------- Placeholder image (screenshots) ---------- */
.shot {
  background:
    repeating-linear-gradient(135deg,
      var(--surface) 0px, var(--surface) 8px,
      #efeadc 8px, #efeadc 16px);
  border: 1px solid var(--border);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.shot-cap {
  position: absolute;
  inset: auto 0 0 0;
  background: var(--paper);
  border-top: 1px solid var(--border);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-2);
}
.shot-tag {
  position: absolute;
  top: 10px; left: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 3px;
  color: var(--ink-2);
}
.fig {
  margin: 14px 0 8px;
}
.fig .shot { aspect-ratio: 16/10; }
.fig-cap {
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: 8px;
  font-family: var(--font-mono);
}
.fig-cap b { color: var(--ink-2); font-weight: 600; }

/* Real screenshots (framed) */
.shot-img {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
}
.shot-img img { display: block; width: 100%; height: auto; }
.fig-img {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--surface);
  aspect-ratio: 4 / 3;
}
.fig-img img { width: 100%; height: 100%; object-fit: contain; display: block; }

/* Responsive figure grid (collapses to fewer columns as width shrinks) */
.fig-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 12px;
}

/* Wide tables scroll horizontally on small phones rather than overflowing */
@media (max-width: 640px) {
  table.kit { display: block; overflow-x: auto; white-space: nowrap; }
}

/* ---------- Inline elements ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 500;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1.5px solid var(--border-strong);
  color: var(--ink-2);
  background: var(--paper);
}
.pill.green {
  border-color: #9fd4ac;
  background: var(--green-soft);
  color: var(--green-deep);
}
.pill.warn {
  border-color: #e8b89a;
  background: var(--warn-soft);
  color: #9a4a2a;
}
.pill.blue {
  border-color: #a9c7f0;
  background: #e7f0fc;
  color: #1d4ed8;
}
.pill.violet {
  border-color: #cdbdf0;
  background: #f1ebfb;
  color: #6d28d9;
}

.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--ink);
}

.formula {
  font-family: var(--font-mono);
  font-size: 13.5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 2px solid var(--green);
  padding: 14px 16px;
  border-radius: 4px;
  color: var(--ink);
  margin: 12px 0;
  overflow-x: auto;
  white-space: nowrap;
}
.formula .var { color: var(--green-deep); }
.formula .unit { color: var(--ink-3); }

.callout {
  border: 1px solid var(--border);
  background: var(--paper);
  padding: 14px 16px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--ink-2);
  display: flex;
  gap: 12px;
}
.callout.warn {
  background: var(--warn-soft);
  border-color: #e8b89a;
  color: #6b3a20;
}
.callout-icon {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ink);
  flex-shrink: 0;
  width: 18px;
  text-align: center;
}
.callout.warn .callout-icon { color: var(--warn); }

/* ---------- Lists ---------- */
ul.tight, ol.tight {
  padding-left: 18px;
  margin: 8px 0 16px;
  color: var(--ink-2);
}
ul.tight li, ol.tight li { margin-bottom: 4px; }

dl.def {
  display: grid;
  grid-template-columns: 140px 1fr;
  row-gap: 6px;
  column-gap: 16px;
  font-size: 14px;
}
dl.def dt {
  color: var(--ink-3);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  padding-top: 2px;
}
dl.def dd { margin: 0; color: var(--ink); }

/* ---------- Footer ---------- */
.footer {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--ink-3);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer a { color: var(--ink-2); }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- Grid helpers ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}
.doc-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 48px;
  align-items: start;
}
.doc-aside {
  position: sticky;
  top: 32px;
  font-size: 13.5px;
}
.doc-aside h4 {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 18px 0 8px 0;
}
.doc-aside h4:first-child { margin-top: 0; }
.doc-aside .a-link {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dotted var(--border);
  color: var(--ink-2);
  font-size: 13px;
}
.doc-aside .a-link:hover { color: var(--green-deep); border-bottom-color: var(--green-deep); }
.doc-aside .a-link.active { color: var(--green-deep); font-weight: 600; border-bottom-color: var(--green-deep); }
.doc-aside .a-link .ext { color: var(--ink-3); font-family: var(--font-mono); font-size: 11px; }

/* ---------- Scroll fade-in (disabled — keeps markup compatible) ---------- */
.fadein { opacity: 1; transform: none; }

/* ---------- Focus ---------- */
:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ========================================================================
   Single-page layout (sticky top bar + right-hand "on this page" TOC)
   Added for the consolidated one-page site. Does not affect .app/.sidebar.
   ======================================================================== */
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 32px;
  background: rgba(253, 252, 248, 0.88);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar .sb-brand { border-bottom: none; padding: 0; }
.topbar .sb-mark { width: 34px; height: 34px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }
.topbar-actions a.plain {
  font-size: 13px; font-weight: 500; color: var(--ink-2); border-bottom: none;
}
.topbar-actions a.plain:hover { color: var(--green-deep); }

/* ---------- Page grid: content + right TOC ---------- */
.layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: 56px;
  padding: 36px 48px 96px;
  align-items: start;
}
.doc { min-width: 0; }
.doc > section[id] { scroll-margin-top: 78px; }
.content > section[id] { scroll-margin-top: 24px; }
.doc-layout section[id] { scroll-margin-top: 24px; }

/* ---------- Right-hand "on this page" navigation ---------- */
.toc {
  position: sticky;
  top: 78px;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.toc-h {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 0 8px 12px;
}
.toc a {
  display: block;
  padding: 5px 12px;
  color: var(--ink-3);
  border-left: 2px solid var(--border);
  border-bottom: none;
  line-height: 1.35;
  transition: color 120ms ease, border-color 120ms ease;
}
.toc a:hover { color: var(--ink); border-left-color: var(--border-strong); border-bottom: none; }
.toc a.active {
  color: var(--green-deep);
  font-weight: 600;
  border-left-color: var(--green);
}
.toc .toc-cta { margin-top: 16px; }

/* ---------- Small responsive (graceful) ---------- */
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; gap: 0; padding: 28px 24px 64px; }
  .toc {
    position: static;
    order: -1;
    flex-flow: row wrap;
    gap: 8px;
    margin-bottom: 28px;
    padding-bottom: 18px;
    border-bottom: 1px dashed var(--border-strong);
  }
  .toc-h { display: none; }
  .toc a { border-left: none; border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; }
  .toc a.active { border-color: var(--green); }
  .toc .toc-cta { margin-top: 0; }
}
/* ---------- Mobile menu (hamburger), shown only on small screens ---------- */
.mobile-bar { display: none; }
.nav-toggle {
  display: inline-grid; place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border-strong);
  border-radius: 8px; background: var(--paper);
  color: var(--ink); cursor: pointer;
}
.nav-toggle:hover { background: var(--surface); }
.nav-toggle .icon-close { display: none; }
body.nav-open .nav-toggle .icon-menu { display: none; }
body.nav-open .nav-toggle .icon-close { display: block; }
.mobile-brand { border-bottom: none; line-height: 1; }
/* FR/EN masqué tant que la traduction anglaise n'est pas faite */
.lang-switch { display: none; }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .mobile-bar {
    display: flex; align-items: center; gap: 12px;
    position: sticky; top: 0; z-index: 30;
    padding: 10px 16px;
    background: rgba(253, 252, 248, 0.92);
    backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .sidebar {
    display: none;
    position: static; height: auto; border-right: none;
    border-bottom: 1px solid var(--border);
  }
  body.nav-open .sidebar { display: flex; }
  .content { padding: 32px 24px 64px; }
  .two-col, .doc-layout { grid-template-columns: 1fr; }
  h1 { font-size: 32px; }
  .topbar { padding: 10px 18px; }
  .topbar-actions a.plain { display: none; }
}