/* Atelier 103 — feuille de style partagée
   Palette et typographie : voir docs/atelier103-site-brief.md, section 2. */

:root {
  --navy: #0B1626;
  --navy-border: #1C2E47;
  --bg: #F4F6FA;
  --bg-alt: #ECEFF6;
  --surface: #FFFFFF;
  --border: #DEE3ED;
  --heading: #10192B;
  --body-text: #4B5670;
  --muted: #7C879C;
  --accent: #C17D3F;
  --text-on-navy: #F3EEE4;
  --accent-on-navy: #D99B6C;

  --font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--body-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  font-family: var(--font-mono);
  color: var(--heading);
  line-height: 1.25;
  margin: 0 0 0.6em;
}

h1 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 600;
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 600;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

p {
  margin: 0 0 1em;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Labels mono, numérotation, séparateurs --- */

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9em;
}

.eyebrow--on-navy {
  color: var(--accent-on-navy);
}

.rule-under {
  border-top: 1px solid var(--navy-border);
  padding-top: 1.1em;
}

.step-index {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 600;
  margin-right: 0.4em;
}

.sequence {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.01em;
  margin: 1em 0 0;
}

/* La flèche est attachée à l'étape précédente : elle ne peut pas se retrouver
   seule en début ou en fin de ligne quand la séquence passe à la ligne. */
.sequence .step:not(:last-child)::after {
  content: " \2192";
  color: var(--accent);
}

.mt-md {
  margin-top: 1.6em;
}

.mt-lg {
  margin-top: 2em;
}

/* --- Coins en L (à utiliser avec parcimonie) --- */

.corner-accent {
  position: relative;
}

.corner-accent::before,
.corner-accent::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border-color: var(--accent-on-navy);
  pointer-events: none;
}

.corner-accent::before {
  top: 0;
  right: 0;
  border-top: 2px solid var(--accent-on-navy);
  border-right: 2px solid var(--accent-on-navy);
}

.corner-accent::after {
  bottom: 0;
  left: 0;
  border-bottom: 2px solid var(--accent-on-navy);
  border-left: 2px solid var(--accent-on-navy);
}

.corner-accent--light::before,
.corner-accent--light::after {
  border-color: var(--accent);
}

/* --- Header / nav (bandeau sombre, sur toutes les pages) --- */

.site-header {
  background: var(--navy);
  color: var(--text-on-navy);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 24px;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-on-navy);
  letter-spacing: 0.02em;
}

.logo span {
  color: var(--accent-on-navy);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.nav-links a:not(.btn) {
  color: var(--text-on-navy);
  opacity: 0.85;
}

.nav-links a:not(.btn):hover {
  opacity: 1;
  color: var(--accent-on-navy);
  text-decoration: none;
}

/* Exclut le bouton Contact : accent sur accent le rendrait illisible. */
.nav-links a.is-active:not(.btn) {
  color: var(--accent-on-navy);
  opacity: 1;
}

/* --- Boutons --- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75em 1.3em;
  border-radius: 4px;
  border: 1.5px solid transparent;
  text-decoration: none !important;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-on-navy);
  color: var(--navy);
}

.btn-primary:hover {
  background: #e6b28a;
}

.btn-secondary {
  border-color: var(--accent-on-navy);
  color: var(--text-on-navy);
}

.btn-secondary:hover {
  border-color: #e6b28a;
  color: var(--accent-on-navy);
}

/* Variantes pour boutons sur fond clair */

.btn-primary--light {
  background: var(--accent);
  color: #fff;
}

.btn-primary--light:hover {
  background: #a8692f;
}

.btn-secondary--light {
  border-color: var(--accent);
  color: var(--heading);
}

.btn-secondary--light:hover {
  border-color: #a8692f;
  color: var(--accent);
}

/* --- Hero (accueil uniquement) --- */

.hero {
  padding: 56px 24px 72px;
}

.hero .wrap {
  position: relative;
  padding-bottom: 34px;
}

.hero h1 {
  color: var(--text-on-navy);
  max-width: 720px;
}

.hero-kicker {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-on-navy);
  border-top: 1px solid var(--navy-border);
  padding-top: 1.1em;
  margin-bottom: 0.9em;
  max-width: 640px;
}

.hero p.lede {
  color: #C7CDDA;
  font-size: 1.1rem;
  max-width: 620px;
  margin-bottom: 2em;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Page header (pages hors accueil) --- */

.page-header {
  padding: 56px 24px 40px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.page-header .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.2em;
}

.page-header .breadcrumb a {
  color: var(--muted);
}

.page-header p.lede {
  font-size: 1.08rem;
  max-width: 680px;
}

/* --- Sections --- */

.section {
  padding: 64px 24px;
}

.section-alt {
  background: var(--bg-alt);
}

.section-head {
  max-width: 640px;
  margin-bottom: 2.4em;
}

/* Longueur de ligne confortable pour les paragraphes pleine largeur. */
.section > .wrap > p,
.about-grid p,
.proof p {
  max-width: 68ch;
}

.section > .wrap > p.sequence {
  max-width: none;
}

/* --- Cartes --- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.card h3 {
  font-size: 1.3rem;
}

.card ul {
  padding-left: 1.1em;
  margin: 1em 0;
}

.card li {
  margin-bottom: 0.6em;
}

.card-cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent);
}

.card .card-cta,
.blog-card .card-cta {
  margin-top: auto;
  padding-top: 1.4em;
  align-self: flex-start;
}

/* --- Bloc preuve (navy, rappel de marque ponctuel) --- */

.proof {
  background: var(--navy);
  color: var(--text-on-navy);
  padding: 56px 24px;
}

.proof p {
  color: #C7CDDA;
  max-width: 640px;
  font-size: 1.05rem;
}

.proof h2 {
  color: var(--text-on-navy);
}

/* --- Blog --- */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.blog-card time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-card h3 {
  margin-top: 0.6em;
}

.blog-card h3 a {
  color: var(--heading);
}

.blog-card h3 a:hover {
  color: var(--accent);
  text-decoration: none;
}

.blog-card p {
  flex-grow: 1;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.blog-list article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px 32px;
}

.blog-list time {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-list h2 {
  font-size: 1.35rem;
  margin: 0.5em 0 0.6em;
}

.blog-list h2 a {
  color: var(--heading);
}

.blog-list h2 a:hover {
  color: var(--accent);
  text-decoration: none;
}

/* --- Article --- */

.article-header {
  padding: 56px 24px 24px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.article-header .meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.2em;
}

.article-header .chapo {
  font-size: 1.15rem;
  font-style: italic;
  color: var(--heading);
  max-width: 680px;
}

/* Même gouttière que .wrap, pour que le corps de l'article s'aligne
   sur le titre au lieu d'être centré indépendamment. */
.article-body {
  padding: 48px 24px 72px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.article-body > * {
  max-width: 680px;
}

.article-body p {
  font-size: 1.05rem;
  margin-bottom: 1.5em;
}

.article-body a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-header h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  max-width: 820px;
}

/* --- À propos --- */

.about-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: start;
}

.about-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
}

/* --- Contact --- */

.contact-block {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin: 1.6em 0;
}

.contact-email {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--heading);
}

/* --- Footer --- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  background: var(--bg);
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
}

.geo-note {
  padding: 18px 24px 40px;
  text-align: center;
}

.geo-note p {
  font-size: 0.82rem;
  font-style: italic;
  color: var(--muted);
  max-width: 620px;
  margin: 0 auto;
}

/* --- Responsive --- */

@media (max-width: 860px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-photo {
    width: 160px;
    height: 160px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .hero {
    padding: 40px 20px 56px;
  }

  .nav {
    padding: 16px 20px;
  }

  .nav-links {
    gap: 18px;
    font-size: 0.82rem;
  }

  .section {
    padding: 48px 20px;
  }

  .card {
    padding: 24px;
  }

  .site-footer .wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}