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

body {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  /* Fond original Version 1 : Dégradé bleu ardoise sombre */
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #f8fafc;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
  position: relative;
}

/* Canvas sous la carte */
#particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Carte centrale */
.container {
  width: 100%;
  max-width: 550px;
  position: relative;
  z-index: 1;
}

.card {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 40px 30px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.4);
}

/* Badge V1 */
.badge {
  display: inline-block;
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(96, 165, 250, 0.3);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

h1 {
  font-size: 2rem;
  margin-bottom: 12px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.description {
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 30px;
  font-size: 1rem;
}

/* Barre de progression */
.progress-wrapper {
  margin-bottom: 30px;
  text-align: left;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #94a3b8;
  margin-bottom: 8px;
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: #334155;
  border-radius: 4px;
  overflow: hidden;
}
/* option 1 */
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #6366f1);
  border-radius: 4px;
  transition: width 0.4s ease;
  animation: fillProgress 1.5s ease-out forwards;
}
@keyframes fillProgress {
  from {
    width: 0%;
  }
  to {
    width: 25%;
  }
}

/* Contact & Nouveau Bouton Gris Ardoise / Zinc */
.contact-section p {
  font-size: 0.9rem;
  color: #cbd5e1;
  margin-bottom: 12px;
}

.btn {
  display: inline-block;
  background: #059669;
  /* #d97706 Gris ardoise classe, pas de bleu vif */
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 12px 24px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn:hover {
  background: #047857;
  /* #f59e0*/
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -5px rgba(5, 150, 105, 0.4);
  /* box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);*/
  border-color: rgba(255, 255, 255, 0.3);
}

/* Réseaux sociaux */
.social-links {
  margin-top: 30px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.social-links a {
  color: #64748b;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.social-links a:hover {
  color: #f8fafc;
}