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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface-hover: #222531;
  --border: #2a2d3a;
  --text: #e1e4ed;
  --text-dim: #8b8fa3;
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --yellow: #eab308;
  --yellow-bg: rgba(234, 179, 8, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --accent: #6366f1;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

#client-ip {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  letter-spacing: 0.02em;
}

#trust-score-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1rem;
}

#trust-score-ring {
  position: relative;
  width: 120px;
  height: 120px;
}

#trust-score-ring svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.ring-bg {
  fill: none;
  stroke: var(--border);
  stroke-width: 8;
}

.ring-fg {
  fill: none;
  stroke: var(--green);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 339.292;
  stroke-dashoffset: 339.292;
  transition: stroke-dashoffset 1s ease, stroke 0.5s ease;
}

#trust-score-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  font-weight: 700;
}

#trust-score-label {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.summary {
  max-width: 600px;
  margin: 0.5rem auto 0;
  font-size: 0.9rem;
  color: var(--text-dim);
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.card-group h2 {
  font-size: 1rem;
  font-weight: 600;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.results-list {
  padding: 0.25rem 0;
}

.result-item {
  display: flex;
  align-items: flex-start;
  padding: 0.6rem 1.25rem;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.result-item:last-child {
  border-bottom: none;
}

.result-item:hover {
  background: var(--surface-hover);
}

.result-indicator {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 6px;
}

.result-indicator.pass {
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

.result-indicator.warn {
  background: var(--yellow);
  box-shadow: 0 0 6px var(--yellow);
}

.result-indicator.fail {
  background: var(--red);
  box-shadow: 0 0 6px var(--red);
}

.result-indicator.info {
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.result-content {
  flex: 1;
  min-width: 0;
}

.result-name {
  font-size: 0.85rem;
  font-weight: 500;
}

.result-detail {
  font-size: 0.78rem;
  color: var(--text-dim);
  word-break: break-word;
  margin-top: 2px;
}

.result-badge {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  margin-top: 3px;
}

.result-badge.pass {
  color: var(--green);
  background: var(--green-bg);
}

.result-badge.warn {
  color: var(--yellow);
  background: var(--yellow-bg);
}

.result-badge.fail {
  color: var(--red);
  background: var(--red-bg);
}

.result-badge.info {
  color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
}

.loading-placeholder {
  padding: 1rem 1.25rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  header h1 {
    font-size: 1.2rem;
  }
  main {
    padding: 1rem 0.5rem 2rem;
  }
  .result-item {
    padding: 0.5rem 0.75rem;
  }
}