* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(180deg, #020617, #020617);
  color: #e5e7eb;
}

/* Header */
.header {
  text-align: center;
  padding: 60px 20px 40px;
}

.logo {
  font-size: 42px;
  margin: 0;
  letter-spacing: 0.5px;
}

.tagline {
  margin-top: 10px;
  font-size: 16px;
  color: #9ca3af;
}

/* Layout */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

/* Wallpaper card */
.wallpaper-card {
  background: #020617;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  margin-bottom: 40px;
}

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

/* Card content */
.card-content {
  padding: 28px;
  text-align: center;
}

.card-content h2 {
  margin: 0;
  font-size: 24px;
}

.card-content p {
  margin: 10px 0 20px;
  color: #9ca3af;
}

/* Button */
.download-btn {
  display: inline-block;
  padding: 14px 28px;
  background: #22c55e;
  color: #020617;
  font-weight: 600;
  border-radius: 12px;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(34, 197, 94, 0.4);
}

/* Footer */
.footer {
  text-align: center;
  padding: 40px 20px;
  font-size: 14px;
  color: #6b7280;
}