/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

/* Layout */
.container {
  width: 100%;
  padding: 1.5rem;
  display: none;
}

.card {
  max-width: 420px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
}

/* Typography */
h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 0.5rem;
}

p {
  font-size: 1rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* Buttons */
.button-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

button {
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  background: #4fd1c5;
  color: #0f2027;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button:hover,
button:focus {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
  outline: none;
}

/* Responsive enhancement */
@media (min-width: 600px) {
  .button-group {
    grid-template-columns: 1fr 1fr;
  }
}