/* ==========================================================================
   SIGNAUX — veille IA bolini.io
   Système : papier + encre + un seul accent. Filets de 1px, annotations mono,
   display en capitales, aucun arrondi, aucune ombre, aucun emoji.
   Un seul axe gauche : tout le contenu s'aligne sur la marge du conteneur.
   ========================================================================== */

:root {
  --ink: #12151C;
  --paper: #F8FAFC;
  --gray: #4A4F5C;
  --gray-light: #7D8695;
  --accent: #3A5C9E;
  --accent-clair: #A8C0EC;
  --rule: rgba(18, 21, 28, 0.16);
  --rule-strong: rgba(18, 21, 28, 0.58);
  --ink-soft: rgba(18, 21, 28, 0.78);

  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --marge: clamp(20px, 5vw, 64px);
  --large: 1120px;
}

*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
html { -webkit-text-size-adjust: 100%; background: var(--paper); }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
}

::selection { background: var(--ink); color: var(--paper); }

a { color: inherit; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.saut {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: 10px 16px; z-index: 99; text-decoration: none;
}
.saut:focus { left: 8px; top: 8px; }

/* --- Bandeau ------------------------------------------------------------- */

.bandeau { border-bottom: 1px solid var(--rule-strong); }
.bandeau-inner {
  max-width: var(--large);
  margin: 0 auto;
  padding: 14px var(--marge);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.marque {
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.bandeau-sep { color: var(--gray-light); }
.rubrique { text-decoration: none; letter-spacing: 0.2em; }
.rubrique:hover { color: var(--accent); }
.bandeau-droite { margin-left: auto; display: flex; gap: 20px; color: var(--gray); }
.bandeau-droite .numero { color: var(--ink); }

/* --- Masthead ------------------------------------------------------------ */

.masthead {
  max-width: var(--large);
  margin: 0 auto;
  padding: clamp(26px, 4vw, 44px) var(--marge) 16px;
  border-bottom: 2px solid var(--ink);
}
.masthead-ligne {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}
.titre-marque {
  margin: 0;
  font-size: clamp(3rem, 12vw, 8.6rem);
  line-height: 0.78;
  font-weight: 800;
  letter-spacing: -0.055em;
  text-transform: uppercase;
}
.masthead-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  color: var(--gray);
  padding-bottom: 8px;
  white-space: nowrap;
}
.masthead-meta span:first-child { color: var(--ink); }
.sous-titre { margin: 16px 0 0; color: var(--gray); letter-spacing: 0.18em; }

/* --- Ouverture ----------------------------------------------------------- */

.ouverture {
  max-width: var(--large);
  margin: 0 auto;
  padding: clamp(26px, 3.6vw, 38px) var(--marge);
  border-bottom: 1px solid var(--rule);
  display: block;
}
.etiquette-ouverture { margin: 0 0 10px; color: var(--accent); }
.chapeau {
  margin: 0;
  max-width: 66ch;
  font-size: 1.04rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* --- À la une (section en négatif) --------------------------------------- */

.une { background: var(--ink); color: var(--paper); }
.une-inner {
  max-width: var(--large);
  margin: 0 auto;
  padding: clamp(30px, 4.6vw, 52px) var(--marge) clamp(18px, 2.4vw, 24px);
}
.une .etiquette {
  color: var(--accent-clair);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.une .etiquette::before {
  content: "";
  width: 28px; height: 1px;
  background: currentColor;
}
.une-titre {
  margin: 0 0 14px;
  font-size: clamp(1.7rem, 4vw, 2.85rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 720;
  max-width: 22ch;
  text-wrap: balance;
}
.une-resume {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 1.02rem;
  color: rgba(248, 250, 252, 0.84);
}
.une .pourquoi {
  margin: 0;
  color: rgba(248, 250, 252, 0.78);
  border-left: 2px solid rgba(248, 250, 252, 0.42);
  max-width: 58ch;
}
.une .etiquette-pourquoi { color: var(--accent-clair); }
.une-pied {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(248, 250, 252, 0.24);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  color: rgba(248, 250, 252, 0.62);
}
.une-pied span { padding-right: 16px; margin-right: 16px; border-right: 1px solid rgba(248, 250, 252, 0.18); }
.une-pied span:last-child { border-right: 0; margin-right: 0; padding-right: 0; }
.une-pied .une-source { color: var(--paper); }
.une-pied .une-lien { margin-left: auto; }
.une-pied a { color: var(--paper); text-decoration-color: rgba(248, 250, 252, 0.5); }
.une-pied a:hover { color: var(--accent-clair); }

/* --- Corps --------------------------------------------------------------- */

main { display: block; }

main > .grille,
main > .sources {
  max-width: var(--large);
  margin: 0 auto;
  padding: 0 var(--marge);
}

.grille {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 236px;
  gap: clamp(24px, 4vw, 56px);
  padding-top: clamp(24px, 3.6vw, 36px);
  padding-bottom: clamp(22px, 3.4vw, 34px);
  align-items: start;
}

.item { padding: 24px 0 28px; border-top: 1px solid var(--rule); }
.item:first-child { border-top: 1px solid var(--rule-strong); }

.item-sur {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  color: var(--gray-light);
}
.item-num { color: var(--gray-light); letter-spacing: 0.06em; }
.item-sur .etiquette { margin: 0; color: var(--accent); }

.etiquette { margin: 0 0 8px; color: var(--accent); }

.item-titre {
  margin: 0 0 10px;
  font-size: clamp(1.24rem, 2.1vw, 1.52rem);
  line-height: 1.16;
  letter-spacing: -0.022em;
  font-weight: 660;
  max-width: 32ch;
  text-wrap: balance;
}
.item-resume { margin: 0 0 12px; color: var(--ink-soft); max-width: 64ch; }

.pourquoi {
  margin: 0 0 12px;
  padding-left: 14px;
  border-left: 2px solid var(--ink);
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: 60ch;
}
.etiquette-pourquoi {
  display: block;
  margin-bottom: 4px;
  color: var(--accent);
  font-size: 9.5px;
  letter-spacing: 0.18em;
}

.item-meta { margin: 0; color: var(--gray); letter-spacing: 0.1em; font-size: 10.5px; }
.item-meta a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--rule-strong); }
.item-meta a:hover { color: var(--accent); border-color: var(--accent); }
.sep { color: var(--gray-light); padding: 0 3px; }

/* --- Marge : sommaire + encadrés ---------------------------------------- */

.marge {
  position: sticky;
  top: 24px;
  display: grid;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--rule-strong);
}
.sommaire .etiquette { color: var(--gray); }
.sommaire ol { list-style: none; margin: 12px 0 0; padding: 0; }
.sommaire li { border-top: 1px solid var(--rule); }
.sommaire li:last-child { border-bottom: 1px solid var(--rule); }
.sommaire a {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 8px;
  padding: 10px 0;
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.38;
  color: var(--ink-soft);
  text-wrap: pretty;
}
.sommaire a:hover { color: var(--accent); }
.sommaire .num { color: var(--gray-light); letter-spacing: 0.06em; font-size: 10px; }

.encadre { border: 1px solid var(--rule); padding: 14px 16px; }
.encadre .etiquette { color: var(--gray); margin-bottom: 6px; }
.encadre .petit { margin: 0; }
.petit { font-size: 0.85rem; color: var(--gray); line-height: 1.55; margin: 10px 0 0; }

/* --- Sources ------------------------------------------------------------- */

.sources {
  border-top: 1px solid var(--rule-strong);
  padding-top: 20px;
  padding-bottom: clamp(30px, 5vw, 52px);
}
.sources .etiquette { color: var(--gray); }
.sources-liste {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
}
.sources-liste li {
  color: var(--gray);
  letter-spacing: 0.07em;
  font-size: 10.5px;
  padding-right: 14px;
  margin-right: 14px;
  border-right: 1px solid var(--rule);
}
.sources-liste li:last-child { border-right: 0; margin-right: 0; padding-right: 0; }

/* --- Archives ------------------------------------------------------------ */

.archives { list-style: none; margin: 0; padding: 0 var(--marge) 60px; max-width: var(--large); }
.archive-ligne { border-top: 1px solid var(--rule); }
.archive-ligne:first-child { border-top: 1px solid var(--rule-strong); }
.archive-ligne a {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 96px;
  gap: 16px;
  align-items: baseline;
  padding: 16px 0;
  text-decoration: none;
}
.archive-ligne a:hover .archive-titre { color: var(--accent); }
.archive-date { color: var(--gray); letter-spacing: 0.08em; }
.archive-titre { font-size: 1.04rem; line-height: 1.35; }
.archive-n { color: var(--gray-light); text-align: right; letter-spacing: 0.08em; }

/* --- Pied ---------------------------------------------------------------- */

.pied { border-top: 2px solid var(--ink); background: var(--paper); }
.pied-inner {
  max-width: var(--large);
  margin: 0 auto;
  padding: 26px var(--marge) 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}
.pied p { margin: 0; }
.pied .petit { max-width: 46ch; }
.pied-nav { display: flex; flex-wrap: wrap; gap: 18px; }
.pied-nav a { text-decoration: none; border-bottom: 1px solid var(--rule-strong); }
.pied-nav a:hover { color: var(--accent); border-color: var(--accent); }
.pied-bas {
  max-width: var(--large);
  margin: 0 auto;
  padding: 14px var(--marge) 30px;
  border-top: 1px solid var(--rule);
  color: var(--gray-light);
  letter-spacing: 0.1em;
}

/* --- Responsive ---------------------------------------------------------- */

@media (max-width: 900px) {
  .grille { grid-template-columns: minmax(0, 1fr); }
  .marge { position: static; order: 1; border-top: 1px solid var(--rule-strong); padding-top: 20px; margin-top: 8px; }
  .sommaire { display: none; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .bandeau-droite span:not(.numero) { display: none; }
  .masthead-ligne { flex-direction: column; align-items: flex-start; gap: 14px; }
  .masthead-meta { flex-direction: row; gap: 16px; padding-bottom: 0; }

  .archive-ligne a { grid-template-columns: 84px minmax(0, 1fr); }
  .archive-n { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

@media print {
  .bandeau, .marge, .pied-nav { display: none; }
  body { background: #fff; }
  .une { background: #fff; color: #000; border-bottom: 2px solid #000; }
  .une-titre, .une-resume, .une .pourquoi, .une-pied { color: #000; }
  .une-pied a { color: #000; }
  .item { break-inside: avoid; }
}