/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Red Hat Display', sans-serif;
  background-color: hsl(225, 100%, 94%); /* Pale blue */
  background-image: url('./images/pattern-background-desktop.svg');
  background-repeat: no-repeat;
  background-size: 100%;
  background-position: top;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-size: 16px;
  line-height: 1.6;
}

/* Card styles */
.card {
  background-color: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(56, 41, 224, 0.15);
  max-width: 450px;
  width: 90%;
  margin: 0 auto;
}

.hero-image {
  width: 100%;
  display: block;
}

.card-content {
  padding: 32px;
  text-align: center;
}

h1 {
  color: hsl(223, 47%, 23%); /* Dark blue */
  font-weight: 900;
  font-size: 28px;
  margin-bottom: 16px;
}

.description {
  color: hsl(224, 23%, 55%); /* Desaturated blue */
  margin-bottom: 24px;
  padding: 0 8px;
}

/* Plan container styles */
.plan-container {
  background-color: hsl(225, 100%, 98%); /* Very pale blue */
  border-radius: 12px;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.plan-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.music-icon {
  width: 48px;
  height: 48px;
}

.plan-details h2 {
  color: hsl(223, 47%, 23%); /* Dark blue */
  font-size: 16px;
  font-weight: 900;
}

.plan-details p {
  color: hsl(224, 23%, 55%); /* Desaturated blue */
  font-size: 16px;
  font-weight: 500;
}

.change-link {
  color: hsl(245, 75%, 52%); /* Bright blue */
  font-weight: 700;
  font-size: 14px;
  text-decoration: underline;
  transition: color 0.2s, opacity 0.2s;
}

.change-link:hover {
  opacity: 0.8;
  text-decoration: none;
}

/* Button styles */
.btn {
  display: block;
  width: 100%;
  padding: 16px;
  border-radius: 12px;
  border: none;
  font-family: 'Red Hat Display', sans-serif;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background-color: hsl(245, 75%, 52%); /* Bright blue */
  color: white;
  box-shadow: 0 15px 20px rgba(56, 41, 224, 0.2);
  margin-bottom: 16px;
}

.btn-primary:hover {
  opacity: 0.8;
}

.btn-secondary {
  background-color: transparent;
  color: hsl(224, 23%, 55%); /* Desaturated blue */
}

.btn-secondary:hover {
  color: hsl(223, 47%, 23%); /* Dark blue */
}

/* Responsive styles */
@media (max-width: 375px) {
  body {
    background-image: url('./images/pattern-background-mobile.svg');
    padding: 24px 0;
  }
  
  .card {
    width: 87%;
  }
  
  .card-content {
    padding: 24px;
  }
  
  h1 {
    font-size: 22px;
  }
  
  .description {
    font-size: 15px;
    margin-bottom: 20px;
  }
  
  .plan-container {
    padding: 12px;
    margin-bottom: 24px;
  }
  
  .plan-info {
    gap: 12px;
  }
  
  .music-icon {
    width: 40px;
    height: 40px;
  }
  
  .plan-details h2,
  .plan-details p {
    font-size: 14px;
  }
  
  .change-link {
    font-size: 13px;
  }
  
  .btn {
    padding: 14px;
    font-size: 14px;
  }
}