:root{
  --bg:#f6fbff;
  --card:#ffffff;
  --muted:#6b7280;
  --accent1:#0077c8; /* base from logo */
  --accent2:#00a1de;
  --radius:12px;
  --container:1100px;
  --shadow:0 6px 24px rgba(15,23,42,0.08);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:#0f1724}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:transparent;position:sticky;top:0;z-index:60;padding:18px 0}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.logo {
  height: 46px;
  border-radius: 50%;
}

.brand-text{font-weight:700;font-size:1rem}

/* Nav */
.nav{display:flex;gap:18px;align-items:center}
.nav a{color:var(--muted);text-decoration:none;font-weight:500;padding:8px;transition:.12s}
.nav a:hover{color:var(--accent1)}

/* Mobile menu */
.menu-btn{display:none;background:none;border:0}
.burger{display:block;width:28px;height:3px;background:#062;}

/* Hero */
.hero{padding:64px 0}
.hero-grid{display:grid;grid-template-columns:1fr 420px;gap:48px;align-items:center}
.hero h1{font-size:clamp(1.6rem,2.6vw,2.4rem);margin:0 0 12px}
.lead{color:var(--muted);margin-bottom:18px}
.cta-row{display:flex;gap:12px;margin-bottom:12px}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:600}
.btn.primary {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: white;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease; /* animation douce */
}

.btn.primary:hover {
  transform: scale(1.1); /* grossit de 10% */
  box-shadow: 0 8px 20px rgba(0,0,0,0.3); /* optionnel : ombre un peu plus grosse */
}

.btn.ghost{background:transparent;border:1px solid rgba(10,20,40,0.06);color:var(--accent1);  transition: transform 0.2s ease, box-shadow 0.2s ease; /* animation douce */}

.btn.ghost:hover {
  transform: scale(1.1); /* grossit de 10% */
  box-shadow: 0 8px 20px rgba(0,0,0,0.3); /* optionnel : ombre un peu plus grosse */
}

/* Cards section */
.section{padding:48px 0}
.section .cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:18px}
.card{background:var(--card);padding:18px;border-radius:12px;box-shadow:var(--shadow)}

/* Demo */
.demo-section .video-wrap{display:flex;justify-content:center;margin-top:18px}
.video-placeholder{background:linear-gradient(180deg,rgba(0,119,200,0.06),transparent);padding:28px;border-radius:12px;text-align:center}
.video-thumb{background:none;border:0;display:inline-block;position:relative;padding:0}
.play-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:26px;color:white;background:rgba(0,0,0,.45);width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center}


/* Footer */
.site-footer{padding:22px 0;background:transparent;color:var(--muted)}
.footer-grid{display:flex;justify-content:space-between;align-items:center;gap:12px}
.footer-logo {
  width: 80px;          /* largeur souhaitée */
  height: 80px;         /* hauteur souhaitée */
  border-radius: 50%;   /* rend l'image circulaire */
  object-fit: cover;    /* garde l'image bien centrée et proportionnée */
}


/* Modal */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(2,6,23,0.6);z-index:200}
.modal[aria-hidden="false"]{display:flex}
.modal-inner{background:white;border-radius:12px;padding:18px;max-width:900px;width:94%;position:relative}
.modal-close{position:absolute;right:12px;top:12px;border:0;background:none;font-size:20px}

.sr-only{position:absolute;left:-9999px}

/* Chat widget */
#chat-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 300px;
  max-height: 400px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  font-size: 14px;
  overflow: hidden;
  z-index: 1000;
}

#chat-header {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: white;
  padding: 10px;
  font-weight: bold;
}

#chat-messages {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.user-msg, .bot-msg {
  padding: 8px 12px;
  border-radius: 8px;
  max-width: 80%;
}

.user-msg {
  align-self: flex-end;
  background: var(--accent1);
  color: white;
}

.bot-msg {
  align-self: flex-start;
  background: #f1f5f9;
  color: #333;
}

#chat-input-area {
  display: flex;
  border-top: 1px solid #ddd;
}

#chat-input {
  flex: 1;
  border: none;
  padding: 10px;
  outline: none;
}

#chat-send {
  background: var(--accent1);
  color: white;
  border: none;
  padding: 0 12px;
  cursor: pointer;
}
/* Bouton flottant */
#chat-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: white;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 1000;
}

/* Chat widget */
#chat-widget {
  position: fixed;
  bottom: 80px;
  right: 20px;
  width: 300px;
  max-height: 400px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
}

.hidden {
  display: none !important;
}

#chat-header {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: white;
  padding: 10px;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
/* Form popup */
#form-popup {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

.hidden { display: none; }

.form-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
}

.form-container {
  position: relative;
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  max-width: 600px;
  width: 90%;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

#form-close {
  position: absolute;
  top: 10px;
  right: 15px;
  cursor: pointer;
  font-size: 20px;
}
/* Carte réseaux sociaux */
.social-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
  border-top: 4px solid var(--accent1);
}

.social-card p {
  margin-bottom: 16px;
  color: #555;
  font-size: 1rem;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  border-radius: 50%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.social-links a img {
  width: 24px;
  height: 24px;
}

.social-links a:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
/* Grille contact + réseaux */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

/* Bloc contact */
.contact-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  border-top: 4px solid var(--accent1);
}

/* Bloc réseaux (déjà défini mais on uniformise) */
.social-card {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  border-top: 4px solid var(--accent2);
  text-align: center;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 12px;
}

/* Responsive : une colonne sur mobile */
@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}
.video-card {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  max-width: 400px; /* largeur maximale */
  margin: 0 auto;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.video-card img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
  object-fit: cover;
}

.video-card .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 32px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.video-card .play-btn:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

.video-card p {
  margin-top: 12px;
  color: #555;
  font-size: 1rem;
}