/* ============================================================
   SOTELI.FR — Corporate Modernism / Swiss Style
   Design System: Bleu Marine #0A192F | Or #D4AF37 | Blanc #FFFFFF
   Typographies: Playfair Display (titres) + Lato (corps)
   ============================================================ */

/* ---------- Variables ---------- */
:root {
  --navy:       #0A192F;
  --navy-mid:   #112240;
  --navy-light: #1E3A5F;
  --gold:       #D4AF37;
  --gold-light: #E8CC6A;
  --white:      #FFFFFF;
  --off-white:  #F8F8F8;
  --slate:      #F4F4F4;
  --grey:       #8A9BB0;
  --grey-dark:  #4A5568;
  --border:     #E2E8F0;
  --border-dark:#1E3A5F;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Lato', 'Helvetica Neue', Arial, sans-serif;

  --container:  1240px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm:  0 2px 8px rgba(10,25,47,0.08);
  --shadow-md:  0 8px 32px rgba(10,25,47,0.14);
  --shadow-lg:  0 20px 60px rgba(10,25,47,0.2);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--navy);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { border: none; background: none; font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--navy);
}

h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.9rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

.text-gold   { color: var(--gold); }
.text-grey   { color: var(--grey); }
.text-white  { color: var(--white); }

/* ---------- Layout Container ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 768px) {
  .container { padding: 0 1.25rem; }
}

/* ---------- Utility ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.hairline {
  height: 1px;
  background: var(--border);
}

.hairline-gold {
  height: 2px;
  width: 60px;
  background: var(--gold);
  margin-bottom: 1.5rem;
}

.section-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

/* ============================================================
   SKIP LINK — Accessibilité
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--gold);
  color: var(--navy);
  padding: 0.5rem 1rem;
  font-weight: 700;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* ============================================================
   HEADER / NAVIGATION
   ============================================================ */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

#site-header.scrolled {
  background: var(--navy);
  box-shadow: var(--shadow-md);
  padding: 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 0;
  transition: padding var(--transition);
}

#site-header.scrolled .header-inner { padding: 1rem 0; }

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.logo-mark {
  width: 38px;
  height: 38px;
  background: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark svg { width: 22px; height: 22px; }

.logo-text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}

.logo-text span { color: var(--gold); }

/* Nav principale */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav a {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  padding: 0.5rem 0.9rem;
  position: relative;
  transition: color var(--transition);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0.9rem; right: 0.9rem;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.main-nav a:hover { color: var(--white); }
.main-nav a:hover::after { transform: scaleX(1); }

/* CTA Nav */
.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gold);
  color: var(--navy);
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(212,175,55,0.4);
}

.btn-outline {
  border: 1px solid rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.08);
}

.btn-outline-dark {
  border: 1px solid var(--navy);
  color: var(--navy);
}
.btn-outline-dark:hover {
  background: var(--navy);
  color: var(--white);
}

.btn-large {
  padding: 0.9rem 2.2rem;
  font-size: 0.85rem;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  cursor: pointer;
  z-index: 1100;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--navy);
  z-index: 1050;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--white);
  transition: color var(--transition);
}

.mobile-menu a:hover { color: var(--gold); }

.mobile-menu .btn {
  margin-top: 1rem;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 600px at 70% 50%, rgba(30, 58, 95, 0.8) 0%, transparent 70%),
    radial-gradient(ellipse 400px 400px at 15% 80%, rgba(212,175,55,0.06) 0%, transparent 60%),
    linear-gradient(135deg, #0A192F 0%, #112240 50%, #0A192F 100%);
}

/* Grille décorative */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* Orbe animé */
.hero-orb {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,0.08) 0%, transparent 65%);
  top: 50%;
  right: 10%;
  transform: translateY(-50%);
  animation: pulse-orb 8s ease-in-out infinite;
}

@keyframes pulse-orb {
  0%, 100% { transform: translateY(-50%) scale(1); opacity: 0.6; }
  50%       { transform: translateY(-50%) scale(1.1); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding-top: 8rem;
  padding-bottom: 6rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fade-up 0.8s ease 0.2s forwards;
}

.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--gold);
}

.hero-eyebrow span {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.hero-content h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fade-up 0.8s ease 0.4s forwards;
}

.hero-content h1 em {
  font-style: italic;
  color: var(--gold);
}

.hero-content p {
  font-size: 1.1rem;
  font-weight: 300;
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fade-up 0.8s ease 0.6s forwards;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fade-up 0.8s ease 0.8s forwards;
}

/* Stats en hero */
.hero-stats {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 2px;
  margin-top: auto;
  opacity: 0;
  animation: fade-up 0.8s ease 1s forwards;
}

.hero-stat {
  flex: 1;
  padding: 1.5rem 2rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-bottom: 2px solid var(--gold);
}

.hero-stat-value {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.hero-stat-value span { color: var(--gold); }

.hero-stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================================
   SECTION : INTRO / VALEUR
   ============================================================ */
#intro {
  padding: 7rem 0;
  background: var(--white);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.intro-text h2 { margin-bottom: 1.5rem; }
.intro-text p {
  font-size: 1.05rem;
  color: var(--grey-dark);
}

.intro-feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.intro-feature {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.intro-feature-icon {
  width: 40px;
  height: 40px;
  background: var(--slate);
  border-left: 3px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.intro-feature-icon svg {
  width: 18px;
  height: 18px;
  stroke: var(--navy);
}

.intro-feature-text h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.intro-feature-text p {
  font-size: 0.9rem;
  color: var(--grey);
}

.intro-visual {
  position: relative;
}

.intro-visual-card {
  background: var(--navy);
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.intro-visual-card::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 80px;
  height: 80px;
  background: var(--gold);
  opacity: 0.15;
}

.intro-quote {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-style: italic;
  color: var(--white);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.intro-quote-author {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
}

.intro-numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-dark);
  margin-top: 2rem;
}

.intro-number {
  background: var(--navy-mid);
  padding: 1.5rem;
  text-align: center;
}

.intro-number-val {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  display: block;
}

.intro-number-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================================
   SECTION : MÉTIERS (accordéons)
   ============================================================ */
#metiers {
  padding: 7rem 0;
  background: var(--navy);
}

#metiers .section-label { color: var(--gold); }
#metiers h2 { color: var(--white); margin-bottom: 1rem; }

.metiers-intro {
  max-width: 680px;
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  margin-bottom: 4rem;
}

.metiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: rgba(255,255,255,0.06);
}

/* Tab buttons */
.metiers-tabs {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  background: rgba(255,255,255,0.04);
  padding: 2px;
  margin-bottom: 2rem;
}

.metier-tab {
  flex: 1;
  min-width: 140px;
  padding: 0.8rem 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  background: transparent;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.metier-tab:hover { color: var(--white); background: rgba(255,255,255,0.06); }

.metier-tab.active {
  color: var(--navy);
  background: var(--gold);
}

.metier-tab svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Panneau de contenu */
.metier-panel {
  display: none;
}

.metier-panel.active {
  display: block;
  animation: fade-up 0.4s ease;
}

.metier-panel-header {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
  padding: 2.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 2px;
}

.metier-panel-icon {
  width: 56px;
  height: 56px;
  background: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.metier-panel-icon svg { width: 24px; height: 24px; stroke: var(--navy); }

.metier-panel-intro h3 {
  color: var(--white);
  margin-bottom: 0.5rem;
}

.metier-panel-intro p {
  color: rgba(255,255,255,0.65);
  font-size: 0.95rem;
}

/* Accordéons dans chaque panneau */
.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.accordion-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.05);
  overflow: hidden;
  transition: border-color var(--transition);
}

.accordion-item:hover { border-color: rgba(212,175,55,0.3); }
.accordion-item.open  { border-color: var(--gold); }

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.accordion-trigger:hover { color: var(--white); }
.accordion-item.open .accordion-trigger { color: var(--gold); }

.accordion-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke: currentColor;
  transition: transform var(--transition);
}

.accordion-item.open .accordion-icon { transform: rotate(45deg); }

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-body-inner {
  padding: 0 1.5rem 1.5rem;
}

.accordion-body ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.accordion-body ul li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.5;
}

.accordion-body ul li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  margin-top: 0.45rem;
  flex-shrink: 0;
}

/* ============================================================
   SECTION : DÉMARCHE STRATÉGIQUE
   ============================================================ */
#demarche {
  padding: 7rem 0;
  background: var(--off-white);
  overflow: hidden;
}

.demarche-header {
  max-width: 640px;
  margin-bottom: 4rem;
}

.demarche-header h2 { margin-bottom: 1rem; }
.demarche-header p { color: var(--grey-dark); font-size: 1.05rem; }

/* Steps slider */
.steps-wrapper {
  position: relative;
}

.steps-track {
  display: flex;
  gap: 2px;
  overflow: hidden;
}

.step-card {
  flex-shrink: 0;
  width: calc(33.333% - 1.5px);
  background: var(--white);
  border: 1px solid var(--border);
  padding: 2.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--border);
  transition: background var(--transition);
}

.step-card.active::before { background: var(--gold); }

.step-card:hover {
  border-color: rgba(212,175,55,0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.step-number {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--slate);
  line-height: 1;
  margin-bottom: 1rem;
  transition: color var(--transition);
}

.step-card.active .step-number { color: rgba(212,175,55,0.2); }

.step-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 0.2rem 0.6rem;
  margin-bottom: 0.75rem;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--grey-dark);
  line-height: 1.65;
}

.steps-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.steps-btn {
  width: 44px;
  height: 44px;
  border: 1px solid var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.steps-btn:hover {
  background: var(--navy);
  color: var(--white);
}

.steps-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.steps-btn svg { width: 18px; height: 18px; }

.steps-counter {
  font-size: 0.85rem;
  color: var(--grey);
}

.steps-counter strong { color: var(--navy); }

/* ============================================================
   SECTION : CAS D'USAGES / MISSIONS
   ============================================================ */
#cas-usages {
  padding: 7rem 0;
  background: var(--white);
}

.cas-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.cas-header .text-part { max-width: 520px; }
.cas-header h2 { margin-bottom: 0.75rem; }
.cas-header p { color: var(--grey-dark); }

.missions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
}

.mission-card {
  background: var(--white);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all var(--transition);
  border-bottom: 3px solid transparent;
}

.mission-card:hover {
  background: var(--navy);
  border-bottom-color: var(--gold);
}

.mission-card:hover * { color: var(--white) !important; }
.mission-card:hover .mission-tag { border-color: rgba(255,255,255,0.3); color: rgba(255,255,255,0.7); }
.mission-card:hover .mission-icon { background: rgba(255,255,255,0.1); }
.mission-card:hover .mission-icon svg { stroke: var(--gold); }

.mission-icon {
  width: 48px;
  height: 48px;
  background: var(--slate);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.mission-icon svg { width: 22px; height: 22px; stroke: var(--navy); }

.mission-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--grey);
  border: 1px solid var(--border);
  padding: 0.2rem 0.6rem;
  width: fit-content;
  transition: all var(--transition);
}

.mission-card h3 {
  font-size: 1rem;
  color: var(--navy);
  transition: color var(--transition);
}

.mission-card p {
  font-size: 0.88rem;
  color: var(--grey-dark);
  line-height: 1.65;
  transition: color var(--transition);
}

/* ============================================================
   SECTION : PARTENAIRES
   ============================================================ */
#partenaires {
  padding: 5rem 0;
  background: var(--slate);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.partenaires-label {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 2.5rem;
}

.partenaires-track {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2.5rem 4rem;
}

.partenaire-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--grey);
  opacity: 0.6;
  transition: opacity var(--transition), color var(--transition);
  letter-spacing: 0.05em;
}

.partenaire-logo:hover {
  opacity: 1;
  color: var(--navy);
}

/* ============================================================
   SECTION : CONTACT
   ============================================================ */
#contact {
  padding: 7rem 0;
  background: var(--navy);
  position: relative;
  overflow: hidden;
}

#contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.contact-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.contact-info .section-label { color: var(--gold); }
.contact-info h2 { color: var(--white); margin-bottom: 1rem; }

.contact-info p {
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
  margin-bottom: 2.5rem;
}

.contact-person {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-left: 3px solid var(--gold);
  margin-bottom: 2rem;
}

.contact-person-avatar {
  width: 52px;
  height: 52px;
  background: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
}

.contact-person-info strong {
  display: block;
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 1.05rem;
}

.contact-person-info span {
  font-size: 0.8rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
}

.contact-detail svg {
  width: 16px;
  height: 16px;
  stroke: var(--gold);
  flex-shrink: 0;
}

.contact-detail a:hover { color: var(--white); }

/* Formulaire */
.contact-form {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--white);
  padding: 0.8rem 1rem;
  font-size: 0.9rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  -webkit-appearance: none;
}

.form-control::placeholder { color: rgba(255,255,255,0.3); }

.form-control:focus {
  border-color: var(--gold);
  background: rgba(255,255,255,0.08);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control option { background: var(--navy); }

.form-submit {
  width: 100%;
  justify-content: center;
  padding: 1rem;
  font-size: 0.85rem;
}

.form-notice {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  text-align: center;
}

/* Message de succès */
.form-success {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
}

.form-success.show { display: block; }

.form-success-icon {
  width: 60px;
  height: 60px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.form-success-icon svg { width: 28px; height: 28px; stroke: var(--gold); }

.form-success h3 { color: var(--white); margin-bottom: 0.5rem; }
.form-success p { color: rgba(255,255,255,0.6); font-size: 0.9rem; }

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
  background: #070F1C;
  color: rgba(255,255,255,0.7);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 2rem;
}

.footer-brand .logo { margin-bottom: 1.25rem; }
.footer-brand .logo-text { font-size: 1.3rem; }

.footer-brand p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.social-link:hover {
  border-color: var(--gold);
  background: rgba(212,175,55,0.1);
}

.social-link svg { width: 16px; height: 16px; stroke: rgba(255,255,255,0.6); }
.social-link:hover svg { stroke: var(--gold); }

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1.25rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer-col ul li a:hover { color: var(--gold); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

.footer-legal a {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}

.footer-legal a:hover { color: var(--gold); }

.footer-certification {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
}

.footer-certification svg { width: 14px; height: 14px; stroke: var(--gold); }

/* ============================================================
   ANIMATIONS & SCROLL
   ============================================================ */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   STICKY CTA (mobile)
   ============================================================ */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--navy);
  border-top: 2px solid var(--gold);
  padding: 0.85rem 1.25rem;
  z-index: 900;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.sticky-cta p {
  font-size: 0.85rem;
  color: var(--white);
  font-weight: 600;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .missions-grid { grid-template-columns: 1fr 1fr; }
  .step-card { width: calc(50% - 1px); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .intro-grid { grid-template-columns: 1fr; gap: 3rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .metiers-grid { grid-template-columns: 1fr; }
  .metier-tab { min-width: 100px; font-size: 0.68rem; }

  .cas-header { flex-direction: column; align-items: flex-start; }
  .main-nav, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .sticky-cta { display: flex; }

  .step-card { width: 80vw; }

  .hero-stats {
    flex-direction: column;
    gap: 2px;
  }
  .hero-stat { padding: 1rem 1.5rem; }
}

@media (max-width: 640px) {
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.7rem; }

  #intro, #metiers, #demarche, #cas-usages, #contact { padding: 4.5rem 0; }

  .missions-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }

  .hero-cta { flex-direction: column; width: 100%; }
  .hero-cta .btn { width: 100%; justify-content: center; }

  .metier-tab { padding: 0.6rem 0.75rem; }
}

/* ============================================================
   FOCUS VISIBLE — Accessibilité W3C
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  #site-header, .sticky-cta, #partenaires { display: none; }
  #hero { min-height: auto; padding: 2rem 0; }
  body { color: #000; }
}