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

:root {
  --bg: #0f1117;
  --surface: #1a1d2e;
  --yes: #00e676;
  --no: #ff1744;
  --text: #e0e0e0;
  --muted: #888;
  --ipv6-color: #40c4ff;
  --ipv4-color: #ffab40;
}

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

main {
  text-align: center;
  padding: 2rem 1.5rem;
  max-width: 640px;
  width: 100%;
}

.site-title {
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.verdict {
  font-size: clamp(8rem, 30vw, 14rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 2.5rem;
}

.verdict-yes {
  color: var(--yes);
  text-shadow: 0 0 80px rgba(0, 230, 118, 0.4);
}

.verdict-no {
  color: var(--no);
  text-shadow: 0 0 80px rgba(255, 23, 68, 0.4);
}

.ip-info {
  background: var(--surface);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.ip-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

.ip-value {
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: 600;
  word-break: break-all;
}

.ip-value.ipv6 {
  color: var(--ipv6-color);
}

.ip-value.ipv4 {
  color: var(--ipv4-color);
}

.no-explainer {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}

.explainer {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.explainer p + p {
  margin-top: 0.5rem;
}

.explainer strong {
  color: var(--text);
}

.verdict-checking {
  color: var(--muted);
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 0.15; }
}

.checking-msg {
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  font-size: 0.8rem;
  color: var(--muted);
}

footer a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

footer a:hover {
  color: var(--text);
  border-bottom-color: var(--text);
}