:root {
  --noir: #0A0A0F;
  --blanc: #F8F8F5;
  --gris-clair: #F0F0EC;
  --gris-mid: #C8C8C0;
  --gris-fonce: #5A5A54;
  --accent: rgb(37, 99, 235);
  --error: #ef4444;
  --light: #EEF4FF;
  --ligne: rgba(0,0,0,0.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--blanc);
  color: var(--noir);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .logo { font-family: 'Syne', sans-serif; }

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(248,248,245,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ligne);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 68px;
  gap: 20px;
}

.logo {
  height: 30px;
  width: auto;
  color: var(--accent);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-text {
  font-size: 22px;
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  color: var(--noir);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .logo-text {
    display: none;
  }
}

.nav-links {
  display: flex;
  gap: 2px;
  list-style: none;
}

.nav-links a {
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--gris-fonce);
  background: none;
  border: none;
  padding: 8px 18px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.01em;
  white-space: nowrap;
  text-decoration: none;
}

.nav-links a:hover { color: var(--noir); background: var(--gris-clair); }
.nav-links a.active { color: var(--noir); background: var(--gris-clair); }

.nav-cta {
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--blanc);
  background: var(--noir);
  border: none;
  padding: 9px 22px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.01em;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--accent); }

/* PAGES */
.page { display: none; padding-top: 68px; min-height: 100vh; }
.page.active { display: flex; flex-direction: column; }

/* ── ACCUEIL ── */
.hero {
  padding: 100px 5% 80px;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  background: var(--light);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.hero h1 {
  font-size: clamp(38px, 4.5vw, 58px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--noir);
  margin-bottom: 24px;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-size: 18px;
  font-weight: 300;
  color: var(--gris-fonce);
  line-height: 1.65;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }

.btn-primary {
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: var(--blanc);
  background: var(--noir);
  border: none;
  padding: 14px 30px;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); }

.btn-secondary {
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 400;
  color: var(--gris-fonce);
  background: none;
  border: 1px solid var(--gris-mid);
  padding: 14px 30px;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--noir); color: var(--noir); }

.hero-visual {
  background: var(--gris-clair);
  border-radius: 16px;
  padding: 36px;
  border: 1px solid var(--ligne);
}

.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.stat-card {
  background: var(--blanc);
  border-radius: 10px;
  padding: 24px 20px;
  border: 1px solid var(--ligne);
}

.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 36px;
  font-weight: 700;
  color: var(--noir);
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-num span { color: var(--accent); }
.stat-label { font-size: 13px; color: var(--gris-fonce); line-height: 1.4; }

.stat-card.full { grid-column: 1 / -1; background: var(--noir); }
.stat-card.full .stat-num { color: var(--blanc); }
.stat-card.full .stat-label { color: var(--gris-mid); }

/* SECTION PROBLÈME */
.section-problem {
  border-top: 1px solid var(--ligne);
  padding: 80px 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gris-fonce);
  margin-bottom: 16px;
}

.section-problem h2 {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.8px;
  line-height: 1.2;
  max-width: 680px;
  margin-bottom: 20px;
}

.section-problem p {
  font-size: 17px;
  color: var(--gris-fonce);
  max-width: 600px;
  font-weight: 300;
  line-height: 1.7;
}

.problem-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--ligne);
  border: 1px solid var(--ligne);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 52px;
}

.problem-card {
  background: var(--blanc);
  padding: 36px 30px;
  transition: background 0.2s;
}
.problem-card:hover { background: var(--gris-clair); }

.problem-icon {
  font-size: 24px;
  margin-bottom: 16px;
  display: inline;
}

.problem-card h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 10px;
  display: inline;
}

.problem-card p { font-size: 14px; color: var(--gris-fonce); line-height: 1.6; }

/* SECTION POUR QUI */
.section-who {
  background: var(--noir);
  padding: 80px 5%;
  margin-top: 80px;
}

.section-who-inner { max-width: 1200px; margin: 0 auto; }

.section-who .section-label { color: rgba(255,255,255,0.3); }

.section-who h2 {
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
  letter-spacing: -0.8px;
  color: var(--blanc);
  margin-bottom: 52px;
}

.who-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.who-card {
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 28px 24px;
  transition: border-color 0.2s, background 0.2s;
}
.who-card:hover { border-color: rgba(255,255,255,0.25); background: rgba(255,255,255,0.04); }

/* Responsive breakpoints for who-grid */
@media (max-width: 768px) {
  .who-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .who-grid { grid-template-columns: 1fr; }
}

.who-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--blanc);
  margin-bottom: 8px;
}
.who-card p { font-size: 13px; color: rgba(255,255,255,0.45); line-height: 1.55; }

/* CTA ACCUEIL */
.section-cta-home {
  padding: 100px 5%;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.section-cta-home h2 {
  font-size: clamp(30px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 20px;
  line-height: 1.15;
}

.section-cta-home p {
  font-size: 17px;
  color: var(--gris-fonce);
  font-weight: 300;
  margin-bottom: 36px;
}

/* ── SOLUTIONS ── */
.solutions-hero {
  padding: 80px 5% 60px;
  max-width: 1200px;
  margin: 0 auto;
  border-bottom: 1px solid var(--ligne);
}

.solutions-hero h1 {
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -1.2px;
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 700px;
}

.solutions-hero p {
  font-size: 18px;
  color: var(--gris-fonce);
  font-weight: 300;
  max-width: 580px;
  line-height: 1.65;
}

.solutions-list { max-width: 1200px; margin: 0 auto; padding: 0 5%; }

.solution-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 80px 0;
  border-bottom: 1px solid var(--ligne);
}

.solution-block:last-child { border-bottom: none; }
.solution-block.reverse { direction: rtl; }
.solution-block.reverse > * { direction: ltr; }

.solution-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  background: var(--light);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.solution-block h2 {
  font-size: clamp(24px, 2.5vw, 34px);
  font-weight: 700;
  letter-spacing: -0.6px;
  margin-bottom: 16px;
  line-height: 1.2;
}

.solution-block > div > p {
  font-size: 16px;
  color: var(--gris-fonce);
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 28px;
}

.feature-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.feature-list li {
  font-size: 14px;
  color: var(--noir);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.feature-list li::before {
  content: '';
  width: 18px;
  height: 18px;
  min-width: 18px;
  background: var(--light);
  border-radius: 50%;
  position: relative;
  top: 1px;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 18 18' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M4.5 9L7.5 12L13.5 6' stroke='%232563EB' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: contain;
}

.solution-visual {
  background: var(--gris-clair);
  border-radius: 14px;
  padding: 36px;
  border: 1px solid var(--ligne);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mock-label { font-size: 12px; color: var(--gris-fonce); width: 100px; flex-shrink: 0; }

.mock-track {
  flex: 1;
  height: 8px;
  background: rgba(0,0,0,0.08);
  border-radius: 4px;
  overflow: hidden;
}

.mock-fill {
  height: 100%;
  border-radius: 4px;
  background: var(--accent);
}

.mock-val { font-size: 12px; font-weight: 500; color: var(--noir); width: 36px; text-align: right; }

.mock-alert {
  background: var(--blanc);
  border-radius: 8px;
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  margin-top: 8px;
}
.mock-alert-label { font-size: 11px; font-weight: 500; color: var(--accent); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.mock-alert-text { font-size: 13px; color: var(--gris-fonce); }

.mock-metric-row { display: flex; gap: 12px; }
.mock-metric {
  flex: 1;
  background: var(--blanc);
  border-radius: 8px;
  padding: 16px;
  border: 1px solid var(--ligne);
}
.mock-metric-num {
  font-family: 'Syne', sans-serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--noir);
  letter-spacing: -0.5px;
}
.mock-metric-num span { color: var(--accent); }
.mock-metric-label { font-size: 11px; color: var(--gris-fonce); margin-top: 2px; }

/* Marché section */
.section-marche {
  background: var(--gris-clair);
  padding: 80px 5%;
}
.section-marche-inner { max-width: 1200px; margin: 0 auto; }
.section-marche h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 700;
  letter-spacing: -0.7px;
  margin-bottom: 12px;
}
.section-marche > div > p,
.section-marche-inner > p {
  font-size: 16px; color: var(--gris-fonce); font-weight: 300; margin-bottom: 48px;
}
.marche-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.marche-card {
  background: var(--blanc);
  border-radius: 10px;
  padding: 24px 20px;
  border: 1px solid var(--ligne);
}
.marche-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.marche-card p { font-size: 13px; color: var(--gris-fonce); line-height: 1.5; }

/* Responsive breakpoints for marche-grid */
@media (max-width: 768px) {
  .marche-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .marche-grid { grid-template-columns: 1fr; }
}

/* ── CONTACT ── */
.contact-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 5%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info h1 {
  font-size: clamp(30px, 3.5vw, 46px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.contact-info p {
  font-size: 17px;
  color: var(--gris-fonce);
  font-weight: 300;
  line-height: 1.7;
  margin-bottom: 48px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-icon {
  width: 40px;
  height: 40px;
  background: var(--gris-clair);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-item-text strong {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gris-fonce);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.contact-item-text span {
  font-size: 15px;
  color: var(--noir);
}

.contact-form-wrap {
  background: var(--gris-clair);
  border-radius: 14px;
  padding: 40px;
  border: 1px solid var(--ligne);
}

.contact-form-wrap h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 6px;
}

.contact-form-wrap > p {
  font-size: 14px;
  color: var(--gris-fonce);
  margin-bottom: 28px;
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gris-fonce);
  margin-bottom: 7px;
  letter-spacing: 0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  color: var(--noir);
  background: var(--blanc);
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 7px;
  padding: 11px 14px;
  outline: none;
  transition: border-color 0.2s;
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}

.form-group input.input-error,
.form-group select.input-error,
.form-group textarea.input-error {
  border-color: var(--error);
}

.error-message {
  color: var(--error);
  font-size: 13px;
  margin-top: 6px;
  display: none;
}
.error-message.show {
  display: block;
}

.form-group textarea { height: 110px; resize: vertical; line-height: 1.6; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.form-submit {
  width: 100%;
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 500;
  color: var(--blanc);
  background: var(--noir);
  border: none;
  padding: 14px;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 6px;
  letter-spacing: 0.01em;
}
.form-submit:hover { background: var(--accent); }
.form-submit:disabled {
  background: rgba(0,0,0,0.2);
  cursor: not-allowed;
  color: rgba(255,255,255,0.7);
}

.form-note {
  font-size: 12px;
  color: var(--gris-mid);
  text-align: center;
  margin-top: 12px;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--ligne);
  padding: 36px 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 100%;
  margin-top: auto;
}

.footer-logo { height: 20px; width: auto; }
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand span {
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--noir);
  letter-spacing: -0.4px;
}
.footer-copy { font-size: 13px; color: var(--gris-mid); }

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.page.active .hero,
.page.active .solutions-hero,
.page.active .contact-page {
  animation: fadeUp 0.45s ease both;
}

/* RESPONSIVE */
@media (max-width: 860px) {
  .hero, .solution-block, .contact-page { grid-template-columns: 1fr; gap: 40px; }
  .solution-block.reverse { direction: ltr; }
  .problem-cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  nav { padding: 0 4%; }
  .nav-cta { display: none !important; }
}