:root {
  --bg-color: #0d1117;
  --card-bg: rgba(22, 27, 34, 0.8);
  --card-border: #30363d;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --accent-color: #58a6ff;
  --accent-glow: rgba(88, 166, 255, 0.15);
  --badge-bg: rgba(88, 166, 255, 0.1);
  --badge-text: #58a6ff;
  --badge-border: rgba(88, 166, 255, 0.25);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-color: #f6f8fa;
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: #d0d7de;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --accent-color: #0969da;
    --accent-glow: rgba(9, 105, 218, 0.1);
    --badge-bg: rgba(9, 105, 218, 0.1);
    --badge-text: #0969da;
    --badge-border: rgba(9, 105, 218, 0.2);
  }
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
  background-image: radial-gradient(circle at 50% 30%, var(--accent-glow) 0%, transparent 60%);
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  width: 100%;
  max-width: 600px;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 3rem 2.5rem;
  text-align: center;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  width: 100%;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--badge-text);
  background-color: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: 9999px;
  margin-bottom: 1.5rem;
}

.title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.25;
  padding-bottom: 0.15em;
  margin-bottom: 0;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.description {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

footer {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
  padding-top: 1.5rem;
}