:root {
  --blue-100: hsl(225, 100%, 94%);
  --blue-700: hsl(245, 75%, 52%);
  --blue-50: hsl(225, 100%, 98%);
  --gray-600: hsl(224, 23%, 55%);
  --blue-950: hsl(223, 47%, 23%);
}

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

body {
  font-family: 'Red Hat Display', sans-serif;
  background-color: var(--blue-100);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  padding: 1.5rem;
}

.card {
  background-color: #fff;
  max-width: 375px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 25px 40px rgba(0, 0, 0, 0.1);
  text-align: center;
}

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

.card-content {
  padding: 2rem;
}

h1 {
  color: var(--blue-950);
  font-weight: 900;
  margin-bottom: 1rem;
}

p {
  color: var(--gray-600);
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.plan-box {
  background-color: var(--blue-50);
  border-radius: 12px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.plan-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.plan-left h2 {
  font-size: 14px;
  font-weight: 900;
  color: var(--blue-950);
}

.plan-left span {
  font-size: 14px;
  color: var(--gray-600);
}

.change-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-700);
}

.change-link:hover {
  text-decoration: none;
  opacity: 0.7;
}

.btn-primary {
  width: 100%;
  padding: 1rem;
  background-color: var(--blue-700);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 15px 20px rgba(56, 41, 224, 0.3);
  margin-bottom: 1rem;
}

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

.btn-secondary {
  background: none;
  border: none;
  color: var(--gray-600);
  font-weight: 700;
  cursor: pointer;
}

.btn-secondary:hover {
  color: var(--blue-950);
}

/* Desktop */
@media (min-width: 768px) {
  .card {
    max-width: 420px;
  }
}