/* =========================================================================
   ExpressCongo — feuille de style (version sobre)
   Agence de logistique. Bleu marine + blanc. Sans-serif (Inter).
   Pas de cartes décoratives, peu d'icônes, beaucoup de blanc.
   ========================================================================= */

:root {
  --navy:       #0b1453;   /* logo, titres, blocs sombres */
  --blue:       #1763b8;   /* accent : liens, boutons, états actifs */
  --blue-deep:  #114e8e;
  --blue-bright:#5b9be0;
  --bg:         #ffffff;
  --bg-soft:    #f6f8fc;
  --line:       #e4e9f1;
  --line-strong:#cdd6e4;
  --text:       #232c41;
  --text-soft:  #5a6378;
  --text-faint: #8b94a8;
  --on-navy:      #eef2fb;
  --on-navy-soft: #aab4d0;
  --on-navy-faint:#7681a4;

  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container: 1080px;
  --gutter: clamp(1.25rem, 5vw, 3.5rem);
  --radius: 10px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2.5px solid var(--blue); outline-offset: 2px; border-radius: 3px; }
::selection { background: var(--blue); color: #fff; }

/* ---------- Typographie ---------- */
h1, h2, h3 { font-weight: 700; line-height: 1.18; letter-spacing: -0.015em; color: var(--navy); }
.display { font-size: clamp(2.2rem, 1.5rem + 3vw, 3.7rem); font-weight: 800; line-height: 1.06; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.55rem, 1.25rem + 1.3vw, 2.25rem); }
h3 { font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem); }
.lede { font-size: clamp(1.1rem, 1.03rem + 0.4vw, 1.3rem); line-height: 1.6; color: var(--text-soft); font-weight: 400; }
p { max-width: 66ch; }
strong, b { font-weight: 700; color: var(--navy); }

.eyebrow { display: block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--blue); margin-bottom: 0.9rem; }
.accent { color: var(--blue); }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(3.2rem, 2.4rem + 3.4vw, 5.4rem); border-top: 1px solid var(--line); }
.section--tight { padding-block: clamp(2.4rem, 1.8rem + 2vw, 3.6rem); }
.measure { max-width: 64ch; }

.sec-head { max-width: 52ch; margin-bottom: clamp(1.8rem, 1.2rem + 2vw, 2.8rem); }
.sec-head .lede { margin-top: 0.9rem; }

/* ---------- Boutons / liens ---------- */
.btn {
  --bg: var(--navy); --fg: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.85em 1.5em; background: var(--bg); color: var(--fg);
  border: 1.5px solid transparent; border-radius: var(--radius);
  font-size: 0.96rem; font-weight: 600; line-height: 1;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(11,20,83,0.16); }
.btn:active { transform: translateY(0); }
.btn--primary { --bg: var(--blue); --fg: #fff; }
.btn--primary:hover { background: var(--blue-deep); }
.btn--ghost { --bg: transparent; --fg: var(--navy); border-color: var(--line-strong); }
.btn--ghost:hover { background: var(--navy); color: #fff; border-color: var(--navy); box-shadow: none; }
.btn--lg { padding: 1em 1.7em; font-size: 1rem; }
.btn--block { width: 100%; }
.section.navy .btn--ghost { --fg: #fff; border-color: rgba(238,242,251,0.3); }
.section.navy .btn--ghost:hover { background: #fff; color: var(--navy); border-color: #fff; }

.arrow-link { display: inline-block; font-weight: 600; color: var(--blue); border-bottom: 1.5px solid rgba(23,99,184,0.35); padding-bottom: 2px; transition: border-color 0.25s ease; }
.arrow-link:hover { border-color: var(--blue); }
.arrow-link::after { content: " \2192"; }

/* ---------- En-tête ---------- */
.site-header { position: sticky; top: 0; z-index: 60; }
.topbar { background: var(--navy); color: var(--on-navy-soft); font-size: 0.8rem; }
.topbar .container { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 36px; padding-block: 0.3rem; }
.topbar a { color: var(--on-navy-soft); }
.topbar a:hover { color: #fff; }
.topbar-langs { display: inline-flex; gap: 0.7rem; align-items: center; }
.topbar-langs span { opacity: 0.5; cursor: default; }
.topbar-langs span[aria-current] { opacity: 1; color: #fff; }

.navbar { background: rgba(255,255,255,0.92); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); transition: box-shadow 0.3s ease; }
.navbar.is-stuck { box-shadow: 0 6px 22px rgba(11,20,83,0.06); }
.navbar .container { display: flex; align-items: center; gap: 1.5rem; min-height: 70px; }
.brand { display: inline-flex; align-items: center; }
.brand__logo { height: 36px; width: auto; }
.site-footer .brand__logo { filter: brightness(0) invert(1); height: 40px; }
.nav-links { display: flex; align-items: center; gap: 0.4rem; margin-left: auto; }
.nav-links a { position: relative; padding: 0.5rem 0.85rem; font-size: 0.94rem; font-weight: 500; color: var(--text-soft); transition: color 0.2s ease; }
.nav-links a::after { content: ""; position: absolute; left: 0.85rem; right: 0.85rem; bottom: 0.3rem; height: 2px; background: var(--blue); transform: scaleX(0); transform-origin: left; opacity: 0; transition: transform 0.35s var(--ease), opacity 0.25s ease; }
.nav-links a:hover { color: var(--navy); }
.nav-links a:hover::after, .nav-links a[aria-current]::after { transform: scaleX(1); opacity: 1; }
.nav-links a[aria-current] { color: var(--navy); }
.nav-cta { display: flex; align-items: center; gap: 0.6rem; }
.nav-cta .btn { padding: 0.62em 1.05em; font-size: 0.88rem; }

.nav-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line-strong); border-radius: 8px; background: #fff; align-items: center; justify-content: center; margin-left: auto; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { display: block; width: 18px; height: 2px; background: var(--navy); border-radius: 2px; transition: transform 0.4s var(--ease), opacity 0.2s ease; }
.nav-toggle span { position: relative; }
.nav-toggle span::before { content: ""; position: absolute; top: -6px; }
.nav-toggle span::after { content: ""; position: absolute; top: 6px; }
body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
body.nav-open .nav-toggle span::after { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(3.5rem, 2.5rem + 6vw, 7rem); }
.hero .container { max-width: 900px; }
.hero h1 { max-width: 16ch; }
.hero h1 .accent { color: var(--blue); }
.hero .lede { margin-top: 1.6rem; max-width: 52ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2.2rem; }
.hero-note { margin-top: 2.4rem; padding-top: 1.6rem; border-top: 1px solid var(--line); color: var(--text-soft); font-size: 0.98rem; max-width: 60ch; }
.hero-note b { color: var(--navy); }

/* ---------- Prose / mission ---------- */
.prose p { max-width: 60ch; color: var(--text-soft); }
.prose p + p { margin-top: 1.15rem; }
.prose strong { color: var(--navy); }
.prose .arrow-link { margin-top: 1.4rem; }

/* ---------- Étapes ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1.4rem, 0.8rem + 2vw, 2.4rem); counter-reset: step; }
.step { counter-increment: step; }
.step::before { content: counter(step, decimal-leading-zero); display: block; font-size: 0.95rem; font-weight: 700; color: var(--blue); margin-bottom: 0.7rem; padding-bottom: 0.7rem; border-bottom: 1px solid var(--line); }
.step h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.96rem; color: var(--text-soft); max-width: 28ch; }

/* ---------- Choix (deux façons / formules) ---------- */
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem, 1rem + 3vw, 3.4rem); }
.choice { padding-top: 1.4rem; border-top: 2px solid var(--navy); }
.choice .tag { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); }
.choice h3 { font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.7rem); margin-top: 0.6rem; }
.choice p { margin-top: 0.8rem; color: var(--text-soft); font-size: 1rem; }
.choice .meta { margin-top: 1rem; font-size: 0.92rem; color: var(--text-faint); }
.choice .meta b { color: var(--navy); font-weight: 600; }
.choice .arrow-link { margin-top: 1.3rem; }

/* ---------- Réseau ---------- */
.places { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem, 1rem + 3vw, 3.4rem); }
.place .tag { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue); }
.place h3 { font-size: 1.45rem; margin-top: 0.6rem; }
.place address { font-style: normal; color: var(--text-soft); margin-top: 0.7rem; line-height: 1.7; }
.place p { margin-top: 0.9rem; color: var(--text-soft); font-size: 0.98rem; }

/* ---------- Au-delà du transport ---------- */
.beyond { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem, 1rem + 3vw, 3.4rem); }
.beyond__item h3 { font-size: 1.35rem; }
.beyond__item p { margin-top: 0.8rem; color: var(--text-soft); font-size: 0.98rem; }

/* ---------- Bloc sombre (CTA) ---------- */
.section.navy { background: var(--navy); color: var(--on-navy); border-top: 0; }
.section.navy h2 { color: #fff; }
.section.navy .lede { color: var(--on-navy-soft); }
.cta { text-align: center; }
.cta .eyebrow { color: var(--blue-bright); }
.cta h2 { max-width: 22ch; margin-inline: auto; }
.cta .lede { max-width: 50ch; margin: 1rem auto 0; }
.cta-actions { display: inline-flex; flex-wrap: wrap; gap: 0.9rem; justify-content: center; margin-top: 2rem; }

/* ---------- Pied de page ---------- */
.site-footer { background: var(--navy); color: var(--on-navy-soft); padding-block: clamp(2.8rem, 2rem + 3vw, 4rem) 1.8rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2.2rem; }
.footer-about p { color: var(--on-navy-soft); margin-top: 1.1rem; font-size: 0.95rem; max-width: 36ch; }
.footer-col h4 { font-size: 0.76rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--on-navy-faint); font-weight: 700; margin-bottom: 1rem; }
.footer-col ul { list-style: none; padding: 0; display: grid; gap: 0.6rem; }
.footer-col a { color: var(--on-navy-soft); font-size: 0.95rem; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-col address { font-style: normal; line-height: 1.8; font-size: 0.95rem; }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 2.6rem; padding-top: 1.4rem; border-top: 1px solid rgba(238,242,251,0.12); font-size: 0.83rem; color: var(--on-navy-faint); }
.footer-bottom .legal { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-bottom a:hover { color: #fff; }

/* ---------- Fil d'ariane ---------- */
.breadcrumb { padding-block: 1.4rem 0; font-size: 0.86rem; color: var(--text-faint); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; padding: 0; }
.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb li + li::before { content: "/"; margin-right: 0.5rem; color: var(--line-strong); }
.breadcrumb [aria-current] { color: var(--navy); }

/* ---------- Devis / formulaire produit ---------- */
.quote { max-width: 680px; }
.quote .cat { font-size: 0.78rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--blue); font-weight: 700; }
.quote h1 { font-size: clamp(1.7rem, 1.35rem + 1.7vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; margin-top: 0.8rem; line-height: 1.18; }
.quote .sub { color: var(--text-soft); margin-top: 0.8rem; font-size: 1.08rem; }
.quote .desc { margin-top: 1rem; color: var(--text-soft); }

.estimator { margin-top: 2rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field.span-2 { grid-column: 1 / -1; }
.field label { font-size: 0.85rem; font-weight: 600; color: var(--text-soft); }
.field .control { position: relative; display: flex; align-items: center; }
.field input, .field select { width: 100%; padding: 0.78rem 0.85rem; background: var(--bg); border: 1.5px solid var(--line-strong); border-radius: var(--radius); font-size: 1rem; color: var(--navy); transition: border-color 0.2s ease, box-shadow 0.2s ease; -webkit-appearance: none; appearance: none; }
.field input:focus, .field select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(23,99,184,0.14); }
.field .unit { position: absolute; right: 0.85rem; font-size: 0.85rem; color: var(--text-faint); pointer-events: none; }
.field select { padding-right: 2.2rem; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235a6378' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.85rem center; background-size: 16px; }

fieldset { border: 0; padding: 0; margin-top: 1.4rem; }
fieldset legend { font-size: 0.85rem; font-weight: 600; color: var(--text-soft); padding: 0; margin-bottom: 0.6rem; }
.modes { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.mode { position: relative; }
.mode input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.mode label { display: block; padding: 0.95rem 1.05rem; border: 1.5px solid var(--line-strong); border-radius: var(--radius); cursor: pointer; transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease; background: var(--bg); }
.mode .m-name { display: block; font-weight: 600; font-size: 1rem; color: var(--navy); }
.mode .m-eta { display: block; font-size: 0.85rem; color: var(--text-faint); margin-top: 0.2rem; }
.mode input:checked + label { border-color: var(--blue); background: var(--bg-soft); box-shadow: 0 0 0 3px rgba(23,99,184,0.1); }
.mode input:focus-visible + label { outline: 2.5px solid var(--blue); outline-offset: 2px; }

.price-row { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 1.8rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }
.price-row .price-label { font-size: 0.95rem; color: var(--text-soft); }
.price-row .price { font-size: clamp(2rem, 1.6rem + 1.8vw, 2.7rem); font-weight: 800; color: var(--navy); letter-spacing: -0.02em; line-height: 1; }
.price-hint { font-size: 0.9rem; color: var(--text-faint); margin-top: 0.6rem; }
.pay { margin-top: 1.5rem; }
.pay .btn { width: 100%; padding-block: 1.05em; font-size: 1.05rem; }
.disclaimer { font-size: 0.85rem; color: var(--text-faint); margin-top: 1rem; line-height: 1.6; }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.15rem 0; font-weight: 600; cursor: pointer; list-style: none; font-size: 1.05rem; color: var(--navy); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .plus { width: 20px; height: 20px; flex: none; position: relative; }
.faq summary .plus::before, .faq summary .plus::after { content: ""; position: absolute; inset: 50% 0 auto 0; height: 2px; background: var(--blue); transform: translateY(-50%); border-radius: 2px; }
.faq summary .plus::after { transform: translateY(-50%) rotate(90deg); transition: transform 0.35s var(--ease); }
.faq details[open] summary .plus::after { transform: translateY(-50%) rotate(0); }
.faq p { padding: 0 0 1.2rem; color: var(--text-soft); font-size: 0.98rem; max-width: 64ch; }

/* ---------- Apparition ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: 0.06s; }
.reveal[data-d="2"] { transition-delay: 0.12s; }
.reveal[data-d="3"] { transition-delay: 0.18s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .nav-links a::after { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .steps { grid-template-columns: 1fr 1fr; gap: 1.8rem 2rem; }
  .choices, .places, .beyond { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-about { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .topbar { font-size: 0.74rem; }
  .nav-links, .nav-cta .btn--ghost { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links { position: fixed; inset: 0 0 auto 0; padding: 5.5rem 1.5rem 2rem; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 16px 44px rgba(11,20,83,0.12); transform: translateY(-105%); transition: transform 0.45s var(--ease); z-index: 55; }
  body.nav-open .nav-links { transform: translateY(0); }
  .nav-links a { padding: 0.95rem 0.4rem; font-size: 1.1rem; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .steps { grid-template-columns: 1fr; }
  .field-grid { grid-template-columns: 1fr 1fr; }
  .modes { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}