:root {
  --blue: #0b5ed7;
  --dark: #0f172a;
  --gray: #64748b;
  --bg: #f8fafc;
}

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

body {
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
}

a {
  color: var(--blue);
  text-decoration: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* HEADER */
.header {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  height: 50px;
}

.nav a {
  margin-left: 1.5rem;
  font-weight: 500;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #0b5ed7, #1e293b);
  color: #fff;
  padding: 4rem 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 span {
  color: #93c5fd;
}

.hero p {
  margin-top: 1.2rem;
}

/* HERO BUTTONS – CORRIGÉ */
.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  padding: 0.8rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  white-space: nowrap;
}

.primary {
  background: #fff;
  color: #0b5ed7;
}

.secondary {
  border: 2px solid #fff;
  color: #fff;
}

/* HERO VISUAL */
.hero-visual .ai-card {
  background: rgba(255,255,255,0.1);
  padding: 2rem;
  border-radius: 16px;
}

/* SECTIONS */
.section {
  padding: 4rem 0;
}

.section.dark {
  background: var(--dark);
  color: #e5e7eb;
}

.section h2 {
  margin-bottom: 1.5rem;
  font-size: 2rem;
}

.section-intro {
  max-width: 700px;
  margin-bottom: 2rem;
}

/* SERVICES */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.service-card {
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
}

/* IA */
.ia-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.ia-item {
  background: rgba(255,255,255,0.05);
  padding: 1.2rem;
  border-radius: 8px;
}

/* DEV */
.platforms span {
  display: inline-block;
  background: #e5e7eb;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  margin: 0.3rem;
}

/* CONTACT */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

/* FOOTER */
.footer {
  background: #020617;
  color: #94a3b8;
  text-align: center;
  padding: 1.5rem 0;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
  }
}

/* RESPONSIVE MOBILE – BOUTONS HERO */
@media (max-width: 600px) {
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
  }
}