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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: #0d1117;
  color: #c9d1d9;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 16px;
}

.container {
  width: 100%;
  max-width: 640px;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 12px;
  padding: 32px;
}

.header {
  text-align: center;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid #21262d;
}

.header h1 {
  font-size: 1.1rem;
  color: #8b949e;
  font-weight: 400;
  margin-bottom: 12px;
}

.ip-address {
  font-size: 2rem;
  font-weight: 700;
  color: #58a6ff;
  font-family: "SF Mono", "Fira Code", monospace;
  margin-bottom: 6px;
}

.location {
  font-size: 0.95rem;
  color: #7ee787;
}

.checks {
  margin-bottom: 24px;
}

.check-row {
  display: flex;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid #21262d;
}

.check-label {
  font-size: 0.95rem;
  color: #c9d1d9;
  min-width: 100px;
}

.check-result {
  font-size: 0.9rem;
}

.check-result.pass {
  color: #3fb950;
}

.check-result.fail {
  color: #8b949e;
}

.external-link-section {
  margin-bottom: 20px;
}

.external-link-section h2 {
  font-size: 0.85rem;
  color: #8b949e;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #21262d;
}

.external-link-row {
  display: flex;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid #21262d;
}

.external-link-row:last-child {
  border-bottom: none;
}

.external-link {
  font-size: 0.9rem;
  color: #58a6ff;
  text-decoration: none;
  flex: 1;
  word-break: break-all;
}

.external-link:hover {
  text-decoration: underline;
}

.btn-open {
  margin-left: 12px;
  padding: 4px 16px;
  font-size: 0.85rem;
  color: #c9d1d9;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s;
}

.btn-open:hover {
  background: #30363d;
  color: #58a6ff;
}

section {
  margin-bottom: 20px;
}

section h2 {
  font-size: 0.85rem;
  color: #8b949e;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #21262d;
}

.info-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.info-row {
  display: flex;
  padding: 6px 0;
  font-size: 0.9rem;
}

.info-row .label {
  color: #8b949e;
  min-width: 110px;
  flex-shrink: 0;
}

.info-row span:last-child {
  color: #c9d1d9;
  word-break: break-all;
}

.ip-analysis {
  padding: 14px 0;
  border-top: 1px solid #21262d;
  border-bottom: 1px solid #21262d;
}

.dea-result-row {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid #21262d;
}