* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: #f1f5f9;
}

.container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem;
}

.icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin: 0 0 0.75rem;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: #94a3b8;
  max-width: 32rem;
  margin: 0 0 2.5rem;
}

.site-footer {
  text-align: center;
  padding: 1.25rem 1rem;
  font-size: 0.9rem;
  color: #64748b;
  border-top: 1px solid rgba(148, 163, 184, 0.15);
}

.site-footer a {
  color: #38bdf8;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}