/* =========================================================
   LABOSCHOOL NIGER — Système de design
   Direction artistique : "Le Carnet de Laboratoire"
   ========================================================= */

/* ---------- Fonts ---------- */
@font-face {
  font-family: 'Space Grotesk';
  src: local('Space Grotesk');
  font-display: swap;
}

/* ---------- Tokens ---------- */
:root{
  --navy: #0B2464;
  --navy-deep: #071A4D;
  --gold: #F9A801;
  --gold-soft: #FBC04D;
  /* Variante assombrie de l'or de marque, réservée au texte sur fond clair :
     l'or de marque (#F9A801) tombe à 1.98:1 de contraste sur blanc (WCAG AA
     exige 4.5:1) ; cette teinte atteint 5.34:1 tout en restant dans la
     même famille chromatique. */
  --gold-on-light: #946000;
  --gray-text: #4A5568;
  --gray-line: #D9DEEA;
  --bg-light: #F4F6FB;
  --white: #FFFFFF;

  --font-display: 'Space Grotesk', 'Poppins', 'Arial Black', sans-serif;
  --font-body: 'Inter', 'Calibri', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Consolas', monospace;

  --radius-s: 6px;
  --radius-m: 14px;
  --radius-l: 28px;

  --container: 1180px;
  --gutter: clamp(20px, 5vw, 64px);

  --shadow-card: 0 18px 40px -22px rgba(7, 26, 77, 0.35);
  --transition: 220ms cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; overflow-x: hidden; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--gray-text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4{ font-family: var(--font-display); color: var(--navy); margin: 0; line-height: 1.15; letter-spacing: -0.02em; }
p{ margin: 0; overflow-wrap: break-word; }
/* Défense contre les textes très longs (ex. un nom d'organisation démesuré
   collé dans le formulaire, ou un futur ajout de contenu) : les conteneurs
   flex/grid ne doivent jamais forcer un débordement horizontal. */
.grid > *, .ledger-row > *, .footer-grid > *{ min-width: 0; }
h1, h2, h3{ overflow-wrap: break-word; }

/* ---------- Surfaces du navigateur (les parties non dessinées portent
   aussi la marque : sélection de texte, curseur, chiffres tabulaires) ---------- */
::selection{ background: var(--gold); color: var(--navy-deep); }
input, textarea, select{ caret-color: var(--gold-on-light); accent-color: var(--gold-on-light); }
.section-navy input, .section-navy textarea{ caret-color: var(--gold); }
.num, .stat-num, .timeline-year, .field input, .field textarea{ font-variant-numeric: tabular-nums; }
button{ font-family: inherit; cursor: pointer; }

:focus-visible{
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* (aucun kicker de page : le H1 porte seul sa hiérarchie, cf. règle ci-dessus) */

.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 28px;
  min-height: 48px;
  border-radius: var(--radius-s);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  border: 2px solid transparent;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
}
.btn-primary{
  background: var(--gold);
  color: var(--navy-deep);
}
.btn-primary:hover{ transform: translateY(-2px); background: var(--gold-soft); }
.btn-primary:active{ transform: translateY(0); background: var(--gold); }
.btn-primary:disabled{ opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-primary.is-loading{
  position: relative;
  color: transparent;
  pointer-events: none;
  opacity: 1;
}
.btn-primary.is-loading::after{
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border: 2px solid var(--navy-deep);
  border-top-color: transparent;
  border-radius: 50%;
  animation: btn-spin 700ms linear infinite;
}
@keyframes btn-spin{ to{ transform: rotate(360deg); } }
.btn-outline{
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
}
.btn-outline:hover{ border-color: var(--gold); color: var(--gold); }
.btn-outline:active{ border-color: var(--gold-soft); color: var(--gold-soft); }
.btn-outline-navy{
  border-color: var(--navy);
  color: var(--navy);
}
.btn-outline-navy:hover{ background: var(--navy); color: var(--white); }
.btn-outline-navy:active{ background: var(--navy-deep); border-color: var(--navy-deep); }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-line);
}
.site-header .container{
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brand{ display: flex; align-items: center; gap: 10px; }
.brand svg{ width: 34px; height: 34px; }
.brand-word{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  letter-spacing: 0.01em;
}
.brand-word span{ color: var(--gold); }

.main-nav{ display: flex; align-items: center; gap: 2px; }
.main-nav a{
  padding: 8px 10px;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--navy);
  border-radius: var(--radius-s);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.main-nav a:hover, .main-nav a[aria-current="page"]{ background: var(--bg-light); color: var(--navy); }
.main-nav a[aria-current="page"]{ font-weight: 700; }

.header-actions{ display: flex; align-items: center; gap: 14px; }
.header-actions .btn{ padding: 11px 20px; min-height: 44px; font-size: 0.88rem; }

.nav-toggle{
  display: none;
  width: 44px; height: 44px;
  border: none; background: transparent;
  align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after{
  content: ''; display: block; width: 22px; height: 2px; background: var(--navy);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle span{ margin: 5px 0; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  background: radial-gradient(120% 140% at 85% -10%, #12306e 0%, var(--navy) 45%, var(--navy-deep) 100%);
  color: var(--white);
  overflow: hidden;
  padding: 72px 0 96px;
}
.hero::before{
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(249,168,1,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(249,168,1,0.05) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(70% 70% at 70% 20%, black, transparent);
  pointer-events: none;
}
.hero-grid{
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.hero h1{
  color: var(--white);
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.hero h1 em{ font-style: normal; color: var(--gold); }
.hero-lede{
  margin-top: 20px;
  font-size: 1.08rem;
  color: rgba(255,255,255,0.82);
  max-width: 46ch;
}
.hero-cta{ display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.hero-lede strong{ color: var(--gold); font-weight: 600; }

.hero-art{ position: relative; }
.hero-art svg{ width: 100%; height: auto; }
.flask-liquid{ transform-origin: bottom; animation: rise 6s ease-in-out infinite; }
.flask-bubble{ animation: bubble 4s ease-in infinite; }
.flask-bubble.b2{ animation-delay: 1.3s; }
.flask-bubble.b3{ animation-delay: 2.6s; }
@keyframes rise{
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(1.04); }
}
@keyframes bubble{
  0% { transform: translateY(0); opacity: 0; }
  15% { opacity: 0.9; }
  90% { opacity: 0.2; }
  100% { transform: translateY(-64px); opacity: 0; }
}

/* ---------- Page hero (pages secondaires, plus compact) ---------- */
.page-hero{
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--white);
  padding: 56px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero::after{
  content:'';
  position: absolute; right: -6%; top: -20%;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(249,168,1,0.16) 0%, transparent 70%);
}
.page-hero h1{ color: var(--white); font-size: clamp(2.1rem, 4.4vw, 3rem); position: relative; max-width: 20ch; }
.page-hero p{ color: rgba(255,255,255,0.78); max-width: 60ch; margin-top: 18px; font-size: 1.08rem; position: relative; }

/* ---------- Sections generic ---------- */
section{ padding: clamp(56px, 8vw, 108px) 0; }
.section-light{ background: var(--bg-light); }
.section-navy{ background: var(--navy); color: rgba(255,255,255,0.85); }
.section-navy h2, .section-navy h3{ color: var(--white); }
.section-head{ max-width: 62ch; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head h2{ font-size: clamp(1.7rem, 3.6vw, 2.4rem); }
.section-head p{ margin-top: 14px; font-size: 1.02rem; color: var(--gray-text); }
.section-navy .section-head p{ color: rgba(255,255,255,0.72); }

/* ---------- Cards: familles produits / valeurs / services ---------- */
.grid{ display: grid; gap: 24px; }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }

.card{
  background: var(--white);
  border: 1px solid var(--gray-line);
  border-radius: var(--radius-m);
  padding: 30px 26px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: transparent; }
.card .icon{ width: 46px; height: 46px; color: var(--gold); margin-bottom: 18px; }
.card h3{ font-size: 1.12rem; margin-bottom: 10px; }
.card p{ font-size: 0.94rem; }
.card ul{ margin-top: 14px; }
.card ul li{
  font-size: 0.9rem;
  padding: 6px 0;
  border-top: 1px dashed var(--gray-line);
}
.card ul li:first-child{ border-top: none; }

.card-navy{
  background: var(--navy-deep);
  border-color: transparent;
  color: rgba(255,255,255,0.82);
}
.card-navy h3{ color: var(--white); }
.card-navy .icon{ color: var(--gold); }

/* ---------- Ledger : liste éditoriale (catalogue, valeurs, secteurs) ----------
   Remplace la grille de cartes identiques comme structure de page : le
   contenu ici est une liste comparable à parcourir en continu (un carnet
   d'inventaire), pas des modules décoratifs équivalents. Un seul filet fin
   sépare les lignes ; aucune carte encadrée, aucune icône répétée. */
.ledger{ border-top: 1px solid var(--gray-line); }
.ledger.on-dark{ border-color: rgba(255,255,255,0.18); }
.ledger-row{
  display: grid;
  grid-template-columns: minmax(160px, 300px) 1fr;
  gap: clamp(16px, 4vw, 40px);
  padding: clamp(22px, 3.4vw, 30px) 0;
  border-bottom: 1px solid var(--gray-line);
  align-items: baseline;
}
.ledger.on-dark .ledger-row{ border-color: rgba(255,255,255,0.18); }
.ledger-label{
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.25;
}
.ledger.on-dark .ledger-label{ color: var(--white); }
.ledger-content{ font-size: 0.98rem; color: var(--gray-text); line-height: 1.65; max-width: 62ch; }
.ledger.on-dark .ledger-content{ color: rgba(255,255,255,0.72); }
.ledger-content .lead{ font-size: 1.02rem; color: var(--navy); margin-bottom: 6px; }
.ledger.on-dark .ledger-content .lead{ color: var(--white); }
.ledger.compact .ledger-row{ grid-template-columns: minmax(120px, 200px) 1fr; padding: 16px 0; }
.ledger.compact .ledger-label{ font-size: 0.95rem; }
.ledger.compact .ledger-content{ font-size: 0.94rem; }
.ledger.compact .ledger-content a{ color: var(--navy); font-weight: 600; }
.ledger.compact .ledger-content a:hover{ color: var(--gold-on-light); }
.ledger-label .icon{
  width: 26px; height: 26px;
  color: var(--gold-on-light);
  vertical-align: -7px;
  margin-right: 10px;
  display: inline-block;
}
.ledger.on-dark .ledger-label .icon{ color: var(--gold); }

/* ---------- Liste simple à filets (déclarations à plat, non séquentielles) ---------- */
.plain-list li{
  padding: 14px 0;
  border-top: 1px solid var(--gray-line);
  font-size: 0.96rem;
}
.plain-list li:first-child{ border-top: none; }
.section-navy .plain-list li{ border-color: rgba(255,255,255,0.18); }
.check-list li{
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 0;
  border-top: 1px solid var(--gray-line);
}
.check-list li:first-child{ border-top: none; }
.check-list .icon{ width: 24px; height: 24px; color: var(--gold-on-light); flex-shrink: 0; margin-top: 2px; }
.check-list p{ font-size: 0.98rem; }
.column-list{ column-count: 2; column-gap: 40px; }
.column-list li{ break-inside: avoid; padding: 12px 0; border-top: 1px solid var(--gray-line); font-size: 0.95rem; }
@media (max-width: 640px){ .column-list{ column-count: 1; } }

/* ---------- Table de données (chiffres du marché) ----------
   Une vraie <table> plutôt que des cellules identiques encadrées : les
   chiffres sont une donnée à lire en ligne, pas un module décoratif
   répété. Un seul filet fin sépare les lignes ; aucun encadré par cellule. */
.fact-table{
  width: 100%;
  border-collapse: collapse;
}
.fact-table tr{ border-top: 1px solid var(--gray-line); }
.fact-table tr:first-child{ border-top: none; }
.fact-table td{ padding: 22px 0; vertical-align: baseline; }
.fact-table td:first-child{
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
  width: 1%;
  white-space: nowrap;
  padding-right: clamp(24px, 5vw, 56px);
}
.fact-table td:last-child{ font-size: 0.98rem; color: var(--gray-text); max-width: 60ch; }
.fact-table td:last-child strong{ color: var(--navy); font-weight: 600; }

/* ---------- Numbered list (process réel : services, roadmap) ---------- */
.process{ display: flex; flex-direction: column; }
.process-item{
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--gray-line);
}
.process-item:last-child{ border-bottom: 1px solid var(--gray-line); }
.process-num{
  font-family: var(--font-mono);
  color: var(--gold);
  font-size: 0.95rem;
  padding-top: 4px;
}
.process-item h3{ font-size: 1.05rem; margin-bottom: 4px; }
.process-item p{ font-size: 0.92rem; }

/* ---------- Timeline (feuille de route) ---------- */
.timeline{
  position: relative;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--gray-line);
  padding-left: 32px;
}
.timeline-item{
  position: relative;
  padding-bottom: 44px;
}
.timeline-item:last-child{ padding-bottom: 0; }
.timeline-item::before{
  content: '';
  position: absolute; left: -38px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--bg-light);
}
.timeline-year{ font-family: var(--font-mono); color: var(--gold); font-size: 0.9rem; }
.timeline-item h3{ font-size: 1.2rem; margin: 6px 0 8px; }
.timeline-item p{ font-size: 0.94rem; max-width: 60ch; }

/* ---------- Quote block ----------
   Pas de filet coloré latéral (banni) : le guillemet géant sert d'ancrage
   visuel, dans le prolongement du filet fin de la fiole de la marque. */
.quote-block{
  position: relative;
  padding-top: 8px;
}
.quote-block::before{
  content: '«';
  display: block;
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 1;
  color: var(--gold-on-light);
  font-weight: 700;
  margin-bottom: -14px;
}
.quote-block p{
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  color: var(--navy);
  font-weight: 500;
  line-height: 1.35;
  max-width: 34ch;
}
.quote-attr{
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--gray-text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.quote-block.on-dark::before{ color: var(--gold); }
.quote-block.on-dark p{ color: var(--white); }
.quote-block.on-dark .quote-attr{ color: var(--gold); }
.quote-block.centered{ text-align: left; max-width: 720px; margin: 0 auto; }
.quote-block.centered p{ max-width: none; }

/* ---------- Skip link (accessibilité clavier) ---------- */
.skip-link{
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  background: var(--gold);
  color: var(--navy-deep);
  padding: 14px 22px;
  font-family: var(--font-display);
  font-weight: 700;
  border-radius: 0 0 var(--radius-s) 0;
}
.skip-link:focus{ left: 0; }

.footer-address{ display: block; padding: 6px 0; font-size: 0.9rem; }

/* ---------- Utilitaires d'espacement (réduisent les styles inline) ---------- */
.mt-3{ margin-top: 14px; }
.mt-4{ margin-top: 24px; }
.mt-6{ margin-top: 40px; }

/* ---------- Trust strip (NIF/RCCM, sans faux logos) ---------- */
.trust-strip{
  display: flex; flex-wrap: wrap; gap: 14px 30px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
}
.trust-strip strong{ color: var(--gold); font-weight: 500; }

/* ---------- Form ---------- */
.form-wrap{
  background: var(--white);
  border-radius: var(--radius-l);
  padding: clamp(28px, 4vw, 48px);
  box-shadow: var(--shadow-card);
}
.field{ margin-bottom: 20px; }
.field label{
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
}
.field input, .field select, .field textarea{
  width: 100%;
  padding: 14px 16px;
  min-height: 48px;
  border: 1.5px solid var(--gray-line);
  border-radius: var(--radius-s);
  font-family: var(--font-body);
  font-size: 0.96rem;
  color: var(--navy);
  background: var(--bg-light);
  transition: border-color var(--transition);
}
.field textarea{ min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus{
  outline: none; border-color: var(--gold); background: var(--white);
}
.field input[aria-invalid="true"]{
  border-color: #A3272A;
  background: #FCEAEA;
}
.field input[aria-invalid="true"]:focus{ border-color: #A3272A; }
.field-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note{ font-size: 0.82rem; color: var(--gray-text); margin-top: 4px; }
.form-status{
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-s);
  font-size: 0.9rem;
  display: none;
}
.form-status.show{ display: block; }
.form-status.ok{ background: #E7F6EC; color: #1F6B3C; }
.form-status.error{ background: #FCEAEA; color: #A3272A; }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--navy-deep);
  color: rgba(255,255,255,0.72);
  padding: 64px 0 32px;
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand .brand-word{ color: var(--white); }
.footer-brand p{ margin-top: 14px; font-size: 0.9rem; max-width: 32ch; }
.footer-col h4{
  color: var(--white); font-family: var(--font-mono); font-size: 0.78rem;
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 16px;
}
.footer-col a{
  display: block; padding: 6px 0; font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-col a:hover{ color: var(--gold); }
.footer-bottom{
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  padding-top: 28px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px){
  .main-nav{ display: none; }
  .nav-toggle{ display: flex; }
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-art{ order: -1; max-width: 320px; margin: 0 auto; }
  .grid-4{ grid-template-columns: repeat(2, 1fr); }
  .grid-3{ grid-template-columns: repeat(2, 1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px){
  .grid-4, .grid-3, .grid-2{ grid-template-columns: 1fr; }
  .field-row{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .fact-table td:first-child{ display: block; padding-right: 0; padding-bottom: 4px; }
  .fact-table td{ display: block; padding: 6px 0; }
  .fact-table tr{ padding: 16px 0; display: block; }
  .process-item{ grid-template-columns: 40px 1fr; }
  .ledger-row{ grid-template-columns: 1fr; gap: 8px; }
}

/* En dessous de 560px : le CTA "Demander un devis" du header disparaît
   (il reste disponible en tête du panneau mobile) pour éviter tout
   débordement horizontal — seuls logo + bouton menu restent visibles. */
@media (max-width: 560px){
  .header-actions .btn-primary{ display: none; }
  .brand-word{ font-size: 0.98rem; }
}

/* Mobile nav panel */
.mobile-nav{
  position: fixed; top: 76px; right: 0; bottom: 0; left: 0;
  max-width: 100vw;
  background: var(--white);
  transform: translateX(100%);
  transition: transform var(--transition);
  z-index: 99;
  overflow-y: auto;
  padding: 24px var(--gutter) 40px;
}
.mobile-nav.open{ transform: translateX(0); }
.mobile-nav a{
  display: block; padding: 16px 4px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.1rem;
  color: var(--navy);
  border-bottom: 1px solid var(--gray-line);
}
.mobile-nav .btn{ margin-top: 24px; width: 100%; justify-content: center; }