/* Algemene opmaak */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  color: #333;
}

header {
  background: #1e88e5;
  color: #fff;
  padding: 20px;
  text-align: center;
}

h1 {
  margin: 0;
}

h4 {
  margin: 5px 0 0;
  font-weight: normal;
}

.controls {
  padding: 10px;
  max-width: 1200px;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.controls input,
.controls select {
  padding: 8px;
  font-size: 16px;
  flex: 1;
}

.campaigns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 20px;
  max-width: 1200px;
  margin: auto;
}

.campaign {
  background: white;
  border-radius: 8px;
  padding: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.campaign h2 {
  font-size: 20px;
  margin: 10px 0;
  color: #1e88e5;
}

.campaign p {
  font-size: 14px;
  color: #555;
}

.campaign img {
  max-width: 100%;
  border-radius: 6px;
  margin-bottom: 10px;
}

.campaign a {
  display: inline-block;
  margin-top: 10px;
  color: #fff;
  background: #43a047;
  padding: 10px 15px;
  font-size: 16px;
  text-decoration: none;
  border-radius: 4px;
}

.campaign a:hover {
  background: #388e3c;
}

#installBtn {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #1e88e5;
  color: #fff;
  padding: 15px 25px;
  border-radius: 5px;
  cursor: pointer;
  display: none;
  z-index: 1000;
  border: none;
}

/* Offline pagina */
.offline {
  text-align: center;
  padding: 40px;
}

.offline-icon {
  margin-top: 20px;
  width: 120px;
  opacity: 0.7;
}