.pwa-install-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 15px 20px;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
  transform: translateY(100%);
  transition: transform 0.3s ease;
  z-index: 9999;
}

.pwa-install-banner.show {
  transform: translateY(0);
}

.banner-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 400px;
  margin: 0 auto;
}

.banner-text {
  flex: 1;
}

.banner-title {
  font-weight: bold;
  margin-bottom: 5px;
  font-size: 16px;
}

.banner-subtitle {
  font-size: 14px;
  opacity: 0.9;
}

.banner-buttons {
  display: flex;
  gap: 10px;
  margin-left: 15px;
}

.pwa-install-banner .btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
}

.pwa-install-banner .btn-install {
  background: white;
  color: #667eea;
}

.pwa-install-banner .btn-install:hover {
  background: #f8f9fa;
  transform: translateY(-1px);
}

.pwa-install-banner .btn-close {
  background: rgba(255,255,255,0.2);
  color: white;
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 18px;
  line-height: 1;
}

.pwa-install-banner .btn-close:hover {
  background: rgba(255,255,255,0.3);
  transform: scale(1.1);
}

.pwa-install-instructions {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: 20px;
}

.instructions-content {
  background: white;
  border-radius: 12px;
  padding: 30px;
  max-width: 350px;
  width: 100%;
  text-align: center;
  position: relative;
  max-height: 80vh;
  overflow-y: auto;
}

.close-instructions {
  position: absolute;
  top: 10px;
  right: 15px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #666;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-instructions:hover {
  color: #333;
  background: #f5f5f5;
  border-radius: 50%;
}

.instruction-step {
  margin: 20px 0;
  padding: 15px;
  background: #f8f9fa;
  border-radius: 8px;
  border-left: 4px solid #667eea;
  text-align: left;
}

.instruction-step strong {
  color: #667eea;
}

/* Responsive */
@media (max-width: 480px) {
  .banner-content {
    flex-direction: column;
    text-align: center;
    gap: 15px;
  }
  
  .banner-buttons {
    margin-left: 0;
    justify-content: center;
  }
  
  .instructions-content {
    margin: 10px;
    padding: 20px;
  }
}

/* Animation d'entrée */
@keyframes slideUp {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.pwa-install-banner.show {
  animation: slideUp 0.3s ease-out;
}