:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --secondary: #ec4899;
  --accent: #06b6d4;
  --dark: #0f172a;
  --dark-card: #1e293b;
  --light: #f8fafc;
  --gray: #94a3b8;
  --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--dark);
  color: var(--light);
  line-height: 1.7;
  font-size: 1.2rem;
  overflow-x: hidden;
}

/* Animated Background */
.bg-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--dark);
  overflow: hidden;
}

.bg-animation::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.08) 0%, transparent 40%);
  animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {

  0%,
  100% {
    transform: translate(0, 0) rotate(0deg);
  }

  25% {
    transform: translate(2%, 2%) rotate(1deg);
  }

  50% {
    transform: translate(-1%, 3%) rotate(-1deg);
  }

  75% {
    transform: translate(3%, -2%) rotate(2deg);
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: var(--dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-links a {
  color: var(--gray);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--light);
}

.cta-button {
  padding: 0.75rem 1.5rem;
  background: var(--gradient);
  border: none;
  border-radius: 50px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(99, 102, 241, 0.4);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  text-align: center;
}

.hero-content {
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--primary);
  margin-bottom: 2rem;
  animation: fadeInUp 0.6s ease;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero h1 span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.4rem;
  color: var(--gray);
  max-width: 700px;
  margin: 0 auto 3rem;
  animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s backwards;
}

.secondary-button {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: 2px solid var(--gray);
  border-radius: 50px;
  color: var(--light);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.secondary-button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Stats Section */
.stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
  padding: 4rem 2rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--gray);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Features Section */
.features {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--gray);
  max-width: 500px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--dark-card);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.3);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* Problem Section */
.problem {
  padding: 6rem 2rem;
  background: linear-gradient(180deg, transparent, rgba(99, 102, 241, 0.03), transparent);
}

.problem-content {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.problem-stats {
  display: grid;
  gap: 1.5rem;
}

.problem-stat {
  background: var(--dark-card);
  padding: 1.5rem;
  border-radius: 16px;
  border-left: 4px solid var(--secondary);
}

.problem-stat strong {
  display: block;
  font-size: 2rem;
  color: var(--secondary);
  margin-bottom: 0.25rem;
}

/* CTA Section */
.cta-section {
  padding: 6rem 2rem;
  text-align: center;
}

.cta-box {
  max-width: 900px;
  margin: 0 auto;
  background: var(--dark-card) !important;
  padding: 4rem;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}



.cta-box h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  position: relative;
}

.cta-box p {
  margin-bottom: 2rem;
  opacity: 0.9;
  position: relative;
}

.cta-box .cta-button {
  background: white;
  color: var(--primary-dark);
}

/* Contact Section */
.contact {
  padding: 6rem 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.contact-card {
  background: var(--dark-card);
  padding: 3rem;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-card h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  text-align: left;
}

.form-group:nth-child(4) {
  grid-column: span 2;
}

.submit-button {
  grid-column: span 2;
}

.form-group {
  display: grid;
  gap: 0.5rem;
}

.form-group label {
  font-size: 1.125rem;
  color: #ffffff;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: 0.01em;
  /* Suppression de l'ombre portée inutile sur fond solide */
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--dark) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  border-radius: 12px;
  color: #ffffff !important;
  font-family: inherit;
  font-size: 1rem !important;
  transition: all 0.2s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #94a3b8;
  opacity: 0.7;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: #1e293b;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.4);
  /* Focus ring très visible pour navigation clavier */
  transform: translateY(-2px);
}

.submit-button {
  width: 100%;
  padding: 1rem;
  background: var(--gradient);
  border: none;
  border-radius: 12px;
  color: white;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 1rem;
}

.submit-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.contact-info-footer {
  margin-top: 3rem;
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #ffffff;
  /* Texte de légende en blanc */
  font-size: 1rem;
  font-weight: 500;
}

.contact-item strong {
  color: var(--light);
}

/* Footer */
.footer {
  padding: 3rem 2rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer p {
  color: var(--gray);
  font-size: 0.875rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .problem-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .stats {
    gap: 2rem;
  }

  .cta-box {
    padding: 2.5rem 1.5rem;
  }
}