:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --border: #262626;
  --text: #e5e5e5;
  --text-muted: #737373;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --error: #ef4444;
  --warning: #f59e0b;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  max-width: 480px;
  width: 100%;
  padding: 2rem;
  text-align: center;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem 2rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  color: var(--text);
}

.status-code {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.04em;
}

.status-code.error { color: var(--error); }
.status-code.warning { color: var(--warning); }
.status-code.info { color: var(--accent); }

h1 {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.6rem 1.5rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s;
}

.btn:hover {
  background: var(--accent-hover);
  text-decoration: none;
}

.meta {
  margin-top: 2rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}