/* ==========================================================================
   EXPANDIA-PARTNERS — Design tokens
   ========================================================================== */
:root {
  /* Couleurs */
  --bg-deep:      #120E36;
  --bg-deep-2:    #1C1560;
  --surface:      #F7F5FF;
  --paper-soft:   #ECE8FA;
  --ink:          #140F33;
  --ink-soft:     #5F5A88;
  --white:        #FFFFFF;
  --white-soft:   #E9E6FB;
  --coral:        #FF5A38;
  --coral-dark:   #DE4420;
  --lime:         #C6FF4D;

  /* Typographie */
  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  /* Rythme */
  --radius: 18px;
  --radius-sm: 10px;
  --max-w: 1180px;
}

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

body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
}

p { margin: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
}

/* ==========================================================================
   Boutons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--coral);
  color: var(--white);
}
.btn-primary:hover { background: var(--coral-dark); }

.btn-ghost-dark {
  background: transparent;
  border-color: rgba(255,255,255,0.28);
  color: var(--white);
}
.btn-ghost-dark:hover { border-color: var(--lime); color: var(--lime); }

.btn-ghost-light {
  background: transparent;
  border-color: rgba(20,15,51,0.18);
  color: var(--ink);
}
.btn-ghost-light:hover { border-color: var(--coral); color: var(--coral-dark); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(18,14,54,0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--white);
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.brand .dot { color: var(--lime); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  color: var(--white-soft);
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover { color: var(--white); }
.nav-links a.active { color: var(--white); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -22px;
  height: 2px;
  background: var(--coral);
}
.nav-cta { display: flex; align-items: center; gap: 18px; }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle {
    display: block;
    background: none; border: none; color: var(--white);
    font-family: var(--font-mono); font-size: 13px;
    letter-spacing: 0.08em; text-transform: uppercase;
    cursor: pointer; padding: 8px 14px; border: 1px solid rgba(255,255,255,0.25); border-radius: 100px;
  }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 76px; left: 0; right: 0;
    background: var(--bg-deep);
    padding: 22px 28px 30px;
    gap: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .nav-links a.active::after { display: none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: linear-gradient(160deg, var(--bg-deep) 0%, var(--bg-deep-2) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
  padding: 92px 0 110px;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.85fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-eyebrow { color: var(--lime); margin-bottom: 22px; display: block; }
.hero h1 {
  font-size: clamp(38px, 5vw, 60px);
  color: var(--white);
  margin-bottom: 26px;
}
.hero h1 em { font-style: normal; color: var(--lime); }
.hero-sub {
  font-size: 18px;
  color: var(--white-soft);
  max-width: 46ch;
  margin-bottom: 38px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-graphic { position: relative; height: 380px; }

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-graphic { height: 260px; order: -1; }
  .hero { padding: 56px 0 70px; }
}

/* ==========================================================================
   Bande de confiance / positionnement
   ========================================================================== */
.trust-band {
  background: var(--bg-deep-2);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 26px 0;
}
.trust-band .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 40px;
  justify-content: space-between;
}
.trust-item {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--white-soft);
  display: flex;
  align-items: center;
  gap: 10px;
}
.trust-item .bullet { color: var(--lime); }

/* ==========================================================================
   Sections génériques
   ========================================================================== */
.section { padding: 96px 0; }
.section-tight { padding: 70px 0; }
.section-dark { background: var(--bg-deep); color: var(--white); }
.section-soft { background: var(--paper-soft); }

.section-head {
  max-width: 640px;
  margin-bottom: 56px;
}
.section-head .eyebrow { color: var(--coral-dark); margin-bottom: 14px; display: block; }
.section-dark .section-head .eyebrow { color: var(--lime); }
.section-head h2 { font-size: clamp(28px, 3.4vw, 42px); margin-bottom: 16px; }
.section-head p { color: var(--ink-soft); font-size: 17px; }
.section-dark .section-head p { color: var(--white-soft); }

/* ==========================================================================
   Étapes ascendantes (élément signature)
   ========================================================================== */
.staircase {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: end;
  gap: 18px;
  margin-top: 20px;
}
.step {
  background: var(--white);
  border: 1px solid rgba(20,15,51,0.08);
  border-radius: var(--radius-sm);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.step:hover { transform: translateY(-6px); box-shadow: 0 20px 40px -20px rgba(20,15,51,0.25); }
.step:nth-child(1) { margin-top: 96px; }
.step:nth-child(2) { margin-top: 64px; }
.step:nth-child(3) { margin-top: 32px; }
.step:nth-child(4) { margin-top: 0; }
.step .num { font-family: var(--font-mono); font-size: 13px; color: var(--coral); font-weight: 600; }
.step h3 { font-size: 18px; margin: 0; }
.step p { color: var(--ink-soft); font-size: 14.5px; }

@media (max-width: 860px) {
  .staircase { grid-template-columns: 1fr; }
  .step:nth-child(1), .step:nth-child(2), .step:nth-child(3), .step:nth-child(4) { margin-top: 0; }
}

/* ==========================================================================
   Cartes de services
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 34px 30px;
  border: 1px solid rgba(20,15,51,0.08);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px -24px rgba(20,15,51,0.28);
  border-color: transparent;
}
.service-card .icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--bg-deep);
  display: flex; align-items: center; justify-content: center;
}
.service-card h3 { font-size: 20px; }
.service-card p { color: var(--ink-soft); font-size: 15px; }
.service-card .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.service-card .tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--paper-soft);
  padding: 5px 10px;
  border-radius: 100px;
}

@media (max-width: 900px) {
  .card-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   CTA band
   ========================================================================== */
.cta-band {
  background: linear-gradient(120deg, var(--coral) 0%, #FF8A5B 100%);
  color: var(--white);
  border-radius: 28px;
  padding: 64px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(26px, 3vw, 36px); max-width: 22ch; color: var(--white); }
.cta-band .btn-primary { background: var(--ink); }
.cta-band .btn-primary:hover { background: #000; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--bg-deep);
  color: var(--white-soft);
  padding: 64px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-grid p { color: var(--white-soft); font-size: 14.5px; max-width: 32ch; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 16px;
  font-weight: 500;
}
.footer-col a, .footer-col span {
  display: block;
  color: var(--white-soft);
  font-size: 14.5px;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: rgba(233,230,251,0.55);
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 44px 28px; flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   Pages internes (bandeau de page)
   ========================================================================== */
.page-hero {
  background: linear-gradient(160deg, var(--bg-deep) 0%, var(--bg-deep-2) 100%);
  color: var(--white);
  padding: 70px 0 60px;
}
.page-hero h1 { font-size: clamp(32px, 4.4vw, 48px); }
.page-hero p { color: var(--white-soft); margin-top: 16px; max-width: 56ch; font-size: 17px; }

/* ==========================================================================
   À propos
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}
.value-list { display: flex; flex-direction: column; gap: 26px; margin-top: 10px; }
.value-item { display: flex; gap: 18px; }
.value-item .num { font-family: var(--font-mono); color: var(--coral); font-weight: 600; font-size: 14px; padding-top: 3px; }
.value-item h3 { font-size: 17px; margin-bottom: 6px; }
.value-item p { color: var(--ink-soft); font-size: 15px; }

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 50px;
  align-items: start;
}
.contact-info-card {
  background: var(--bg-deep);
  color: var(--white);
  border-radius: var(--radius);
  padding: 38px 32px;
}
.contact-info-card h3 { font-size: 20px; margin-bottom: 22px; }
.contact-line { display: flex; flex-direction: column; gap: 4px; margin-bottom: 22px; }
.contact-line .label { font-family: var(--font-mono); font-size: 12px; color: var(--lime); text-transform: uppercase; letter-spacing: 0.08em; }
.contact-line .value { font-size: 15.5px; color: var(--white-soft); }

.value.placeholder-text {
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 13px;
  opacity: 0.85;
}

.form-field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.form-field label { font-size: 13.5px; font-weight: 600; color: var(--ink); }
.form-field input, .form-field select, .form-field textarea {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(20,15,51,0.16);
  background: var(--white);
  color: var(--ink);
  resize: vertical;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--coral);
  box-shadow: 0 0 0 3px rgba(255,90,56,0.15);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

.form-status {
  font-size: 14.5px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  display: none;
  margin-bottom: 18px;
}
.form-status.show { display: block; }
.form-status.ok { background: rgba(198,255,77,0.25); color: #26521a; }
.form-status.err { background: rgba(255,90,56,0.15); color: var(--coral-dark); }

.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; }

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Mentions légales
   ========================================================================== */
.legal-block { max-width: 760px; }
.legal-block h2 { font-size: 22px; margin: 40px 0 14px; }
.legal-block h2:first-child { margin-top: 0; }
.legal-block p, .legal-block li { color: var(--ink-soft); font-size: 15.5px; margin-bottom: 10px; }
.legal-block ul { padding-left: 20px; }
.legal-block .placeholder {
  background: rgba(255,90,56,0.1);
  border: 1px dashed var(--coral);
  color: var(--coral-dark);
  padding: 2px 6px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13.5px;
}

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }