/* ═══════════════════════════════════════════════════════════
   CHA MARKETING — Global Stylesheet
   Design: Tech Agence Moderne
   Colors: #e72628 (red), #044993 (blue), #000 (black), #fff (white)
   Fonts: Space Grotesk (titles) + Inter (body)
═══════════════════════════════════════════════════════════ */

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --red: #e72628;
  --blue: #044993;
  --black: #000000;
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #6c757d;
  --gray-700: #495057;
  --gray-900: #212529;
  --font-title: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.1), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.08);
  --transition: .25s ease;
  --radius: 8px;
  --radius-lg: 14px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
h1,h2,h3,h4,h5 { font-family: var(--font-title); font-weight: 700; line-height: 1.15; }

/* ── CONTAINER ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}
@media (min-width: 768px) { .container { padding: 0 2rem; } }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .7rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-title);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--red);
  color: var(--white);
  border-color: var(--red);
}
.btn-primary:hover { background: #c91f21; border-color: #c91f21; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(231,38,40,.35); }
.btn-blue {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-blue:hover { background: #033a7a; border-color: #033a7a; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(4,73,147,.35); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.5);
}
.btn-outline:hover { background: rgba(255,255,255,.1); border-color: var(--white); }
.btn-dark {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn-dark:hover { background: var(--gray-100); transform: translateY(-1px); }

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid rgba(255,255,255,.12);
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.navbar.scrolled,
.navbar.menu-open {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-md);
}
/* Liens blancs sur fond transparent */
.navbar-nav a { color: rgba(255,255,255,.85); }
.navbar-nav a:hover, .navbar-nav a.active { color: var(--white); background: rgba(255,255,255,.12); }
.hamburger span { background: var(--white); }
/* Liens sombres une fois scrollé */
.navbar.scrolled .navbar-nav a { color: var(--gray-700); }
.navbar.scrolled .navbar-nav a:hover,
.navbar.scrolled .navbar-nav a.active { color: var(--blue); background: rgba(4,73,147,.06); }
.navbar.scrolled .hamburger span,
.navbar.menu-open .hamburger span { background: var(--gray-900); }
.navbar-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 68px;
}
.navbar-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}
.navbar-logo img { height: 44px; width: auto; }
.navbar-nav {
  display: flex;
  align-items: center;
  gap: .25rem;
  margin-left: auto;
}
.navbar-nav a {
  font-family: var(--font-title);
  font-size: .875rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: .4rem .75rem;
  border-radius: 6px;
  transition: all var(--transition);
}
.navbar-nav a:hover, .navbar-nav a.active { color: var(--blue); background: rgba(4,73,147,.06); }
.navbar-cta { margin-left: 1rem; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-900);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 1.25rem 1.5rem;
  border-top: 1px solid var(--gray-200);
  gap: .25rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: var(--font-title);
  font-size: .9rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: .6rem .75rem;
  border-radius: 6px;
  transition: all var(--transition);
}
.mobile-menu a:hover { color: var(--blue); background: rgba(4,73,147,.06); }
.mobile-menu .btn { margin-top: .5rem; justify-content: center; }
@media (max-width: 900px) {
  .navbar-nav, .navbar-cta { display: none; }
  .hamburger { display: flex; }
  .navbar:has(.mobile-menu.open) {
    background: var(--white);
    backdrop-filter: none;
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-md);
  }
  .navbar:has(.mobile-menu.open) .hamburger span { background: var(--gray-900); }
}

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
  background: var(--blue);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, #044993 0%, #022d5e 50%, #000 100%);
  z-index: 0;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(231,38,40,.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(4,73,147,.3) 0%, transparent 50%);
}
.hero .container { position: relative; z-index: 1; padding: 5rem 1.25rem; }
.hero-content { max-width: 700px; }
.hero-badge {
  display: inline-block;
  background: rgba(231,38,40,.2);
  border: 1px solid rgba(231,38,40,.4);
  color: #ff8080;
  font-family: var(--font-title);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .35rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--red);
}
.hero-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,.75);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.4);
  font-size: .7rem;
  font-family: var(--font-title);
  letter-spacing: .1em;
  text-transform: uppercase;
  z-index: 1;
}
.hero-scroll::before {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,.2);
  margin: 0 auto .5rem;
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine { 0%,100%{opacity:.2;transform:scaleY(1)} 50%{opacity:.8;transform:scaleY(1.3)} }

/* ── PAGE HERO (inner pages) ── */
.page-hero {
  background: linear-gradient(135deg, #044993 0%, #022d5e 60%, #000 100%);
  padding: 7rem 0 4rem;
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--white);
  margin: .5rem 0 1rem;
}
.page-hero p {
  color: rgba(255,255,255,.7);
  max-width: 560px;
  margin: 0 auto;
  font-size: 1rem;
  line-height: 1.7;
}

/* ── STATS BAND ── */
.stats-band {
  background: var(--black);
  padding: 3rem 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}
.stat-item {}
.stat-value {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: .4rem;
}
.stat-value span { color: var(--red); }
.stat-label {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
  letter-spacing: .05em;
}
@media (max-width: 700px) { .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; } }

/* ── SECTION ── */
.section { padding: 5rem 0; }
.section-gray { background: var(--gray-50); }
.section-header { margin-bottom: 3rem; }
.section-header.center { text-align: center; }
.section-header h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--gray-900); margin-top: .5rem; }
.section-header p { color: var(--gray-500); margin-top: .75rem; max-width: 560px; line-height: 1.7; }
.section-header.center p { margin: .75rem auto 0; }
.section-label {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-title);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--red);
}
.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--red);
  flex-shrink: 0;
}
.title-bar {
  position: relative;
  padding-left: 1rem;
  margin-top: .5rem;
}
.title-bar::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--red);
  border-radius: 2px;
}
.title-bar h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--gray-900); }

/* ── PLATFORMS GRID ── */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.platform-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}
.platform-card:hover {
  border-color: var(--platform-color, var(--blue));
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
  transform: translateY(-3px);
}
.platform-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  overflow: hidden;
  margin: 0 auto 1rem;
}
.platform-icon img { width: 100%; height: 100%; object-fit: cover; }
.platform-name {
  font-family: var(--font-title);
  font-size: .9rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: .35rem;
}
.platform-desc { font-size: .78rem; color: var(--gray-500); line-height: 1.5; }
@media (max-width: 900px) { .platforms-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .platforms-grid { grid-template-columns: repeat(2, 1fr); gap: .75rem; } }

/* ── SERVICES GRID (home) ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--blue); }
.service-icon { font-size: 2rem; margin-bottom: 1rem; }
.service-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: .5rem; color: var(--gray-900); }
.service-card p { font-size: .85rem; color: var(--gray-500); line-height: 1.6; }
@media (max-width: 900px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .services-grid { grid-template-columns: 1fr; } }

/* ── SERVICES PAGE GRID ── */
.services-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
}
.service-page-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-top: 4px solid var(--service-color, var(--blue));
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}
.service-page-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.service-page-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.service-page-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .75rem; color: var(--gray-900); }
.service-page-card p { font-size: .875rem; color: var(--gray-500); line-height: 1.7; margin-bottom: 1rem; }
.service-page-card ul { display: flex; flex-direction: column; gap: .4rem; }
.service-page-card li {
  font-size: .82rem;
  color: var(--gray-700);
  padding-left: 1.2rem;
  position: relative;
}
.service-page-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--service-color, var(--blue));
  font-size: .75rem;
}
@media (max-width: 768px) { .services-page-grid { grid-template-columns: 1fr; } }

/* ── PROCESS STEPS ── */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 2px;
  background: var(--gray-200);
  z-index: 0;
}
.step { text-align: center; position: relative; z-index: 1; }
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue);
  color: var(--white);
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  box-shadow: 0 0 0 6px var(--white), 0 0 0 8px var(--gray-200);
}
.step h4 { font-size: .95rem; font-weight: 700; margin-bottom: .5rem; color: var(--gray-900); }
.step p { font-size: .8rem; color: var(--gray-500); line-height: 1.6; }
@media (max-width: 768px) {
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
}
@media (max-width: 480px) { .process-steps { grid-template-columns: 1fr; } }

/* ── CLIENTS BAND ── */
.clients-band {
  background: var(--blue);
  padding: 4rem 0;
  text-align: center;
}
.clients-band h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.clients-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 1rem;
}
.client-stat { text-align: center; }
.client-stat-value {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--white);
}
.client-stat-label { font-size: .78rem; color: rgba(255,255,255,.55); margin-top: .3rem; text-transform: uppercase; letter-spacing: .05em; }
@media (max-width: 700px) { .clients-stats { grid-template-columns: repeat(2, 1fr); } }

/* ── CTA SECTION ── */
.cta-section {
  background: var(--black);
  padding: 5rem 0;
  text-align: center;
}
.cta-section h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); color: var(--white); margin: .75rem 0 1rem; }
.cta-section p { color: rgba(255,255,255,.6); max-width: 500px; margin: 0 auto 2rem; line-height: 1.7; }

/* ── PLATFORM FILTER ── */
.platform-filter {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 2.5rem;
}
.filter-btn {
  font-family: var(--font-title);
  font-size: .8rem;
  font-weight: 600;
  padding: .45rem 1rem;
  border-radius: 100px;
  border: 1.5px solid var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--blue); color: var(--blue); }
.filter-btn.active { background: var(--blue); border-color: var(--blue); color: var(--white); }

/* ── CONTACT ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.contact-info-icon {
  font-size: 1.3rem;
  width: 40px;
  height: 40px;
  background: var(--gray-100);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-item h4 { font-size: .85rem; font-weight: 700; margin-bottom: .15rem; color: var(--gray-900); }
.contact-info-item p { font-size: .85rem; color: var(--gray-500); }
.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1rem; }
.form-group label { font-size: .8rem; font-weight: 600; color: var(--gray-700); }
.form-group input,
.form-group select,
.form-group textarea {
  padding: .65rem .9rem;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .875rem;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(4,73,147,.1); }
.form-group textarea { min-height: 110px; resize: vertical; }
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .form-row { grid-template-columns: 1fr; }
}

/* ── FOOTER ── */
footer { background: var(--black); }
.footer-main { padding: 4rem 0 3rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
}
.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1rem;
}
.footer-brand-logo img { height: 40px; width: auto; }
.footer-brand-logo span {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
}
.footer-desc { font-size: .82rem; color: rgba(255,255,255,.45); line-height: 1.7; margin-bottom: 1.5rem; }
.footer-socials { display: flex; gap: .5rem; }
.footer-social {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.5);
  transition: all var(--transition);
}
.footer-social:hover { background: var(--red); color: var(--white); }
.footer-col h4 {
  font-family: var(--font-title);
  font-size: .8rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 1.25rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: .5rem; }
.footer-col li a,
.footer-col li span {
  font-size: .82rem;
  color: rgba(255,255,255,.45);
  transition: color var(--transition);
}
.footer-col li a:hover { color: var(--white); }
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .82rem;
  color: rgba(255,255,255,.45);
  margin-bottom: .75rem;
}
.footer-contact-item svg { flex-shrink: 0; color: var(--red); }
.footer-contact-item a { color: rgba(255,255,255,.45); transition: color var(--transition); }
.footer-contact-item a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.25rem 0;
}
.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom-inner p { font-size: .78rem; color: rgba(255,255,255,.3); }
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { font-size: .78rem; color: rgba(255,255,255,.35); transition: color var(--transition); }
.footer-legal a:hover { color: var(--white); }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem 1.5rem; }
  .footer-grid > div:first-child,
  .footer-grid > div:last-child { grid-column: 1 / -1; }
  .footer-bottom-inner { flex-direction: column; text-align: center; }
  .footer-legal { justify-content: center; }
}

/* ── LEGAL PAGES ── */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}
.legal-content h2 {
  font-size: 1.2rem;
  color: var(--blue);
  margin: 2rem 0 .75rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--gray-200);
}
.legal-content h3 { font-size: 1rem; margin: 1.25rem 0 .5rem; color: var(--gray-900); }
.legal-content p { font-size: .9rem; color: var(--gray-700); line-height: 1.8; margin-bottom: .75rem; }
.legal-content ul { margin: .5rem 0 1rem 1.5rem; list-style: disc; }
.legal-content li { font-size: .875rem; color: var(--gray-700); line-height: 1.7; margin-bottom: .3rem; }
.legal-content a { color: var(--blue); text-decoration: underline; }
.legal-update {
  display: inline-block;
  background: var(--gray-100);
  border-left: 3px solid var(--red);
  padding: .5rem 1rem;
  font-size: .8rem;
  color: var(--gray-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 2rem;
}

/* ── ANIMATIONS ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up-delay-1 { transition-delay: .1s; }
.fade-up-delay-2 { transition-delay: .2s; }
.fade-up-delay-3 { transition-delay: .3s; }

/* ── SPLIT GRID (problème / solution) ── */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
@media (max-width: 768px) {
  .split-grid { grid-template-columns: 1fr; gap: 0; }
  .split-grid > div + div {
    border-top: 1px solid var(--gray-200);
    padding-top: 2.5rem;
    margin-top: 2.5rem;
  }
}

/* ── RESPONSIVE HELPERS ── */
@media (max-width: 768px) {
  .section { padding: 3rem 0; }
  .section-header { margin-bottom: 2rem; }
  .hero .container { padding: 3rem 1.25rem; }
  .page-hero { padding: 5.5rem 0 3rem; }
  .stats-band { padding: 2rem 0; }
  .stat-value { font-size: 2rem; }
  .platform-card { padding: 1.1rem; }
  .service-card { padding: 1.25rem; }
}
@media (max-width: 600px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .service-icon { font-size: 1.5rem; margin-bottom: .6rem; }
}
@media (max-width: 480px) {
  .section { padding: 2.5rem 0; }
  .hero h1 { font-size: 1.9rem; }
  .hero-sub { font-size: .95rem; margin-bottom: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
  .stat-value { font-size: 1.75rem; }
  .platform-card { padding: .85rem; }
  .platform-icon { width: 44px; height: 44px; }
  .platform-name { font-size: .82rem; }
  .platform-desc { font-size: .72rem; }
}