:root {
  --bg: #0e1116;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #4c9aff;
  --panel: #161b22;
  --border: #30363d;
  --danger: #f85149;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
body { padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button {
  background: var(--accent); color: #fff; border: 0;
  padding: 10px 14px; border-radius: 8px; font: inherit;
  cursor: pointer;
}
button:active { opacity: 0.8; }
input, textarea {
  width: 100%; background: var(--panel); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; font: inherit;
}
textarea { resize: vertical; min-height: 90px; }
#gate { max-width: 420px; margin: 15vh auto; padding: 24px; }
#gate h1 { margin-top: 0; }
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
header h1 { font-size: 18px; margin: 0; font-weight: 600; }
#logout {
  background: transparent; color: var(--muted); border: 0;
  padding: 4px 8px; font-size: 13px;
}
nav {
  display: flex; overflow-x: auto; gap: 6px;
  padding: 8px 12px; border-bottom: 1px solid var(--border);
  position: sticky; top: 47px; background: var(--bg); z-index: 9;
  -webkit-overflow-scrolling: touch;
}
nav::-webkit-scrollbar { display: none; }
nav a {
  padding: 6px 12px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted);
  white-space: nowrap; font-size: 14px;
}
nav a.active {
  color: var(--fg); border-color: var(--accent);
  background: rgba(76, 154, 255, 0.12);
}
main { padding: 16px; max-width: 720px; margin: 0 auto; }
.meta { color: var(--muted); font-size: 13px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px; margin-bottom: 12px;
  color: var(--fg);
}
a.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 6px; font-size: 15px; font-weight: 600; }
.card .meta { margin-bottom: 8px; }
.card pre {
  white-space: pre-wrap; word-break: break-word;
  font-size: 13px; color: var(--muted); margin: 0;
  font-family: ui-monospace, SFMono-Regular, monospace;
}
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row > :first-child { flex: 1; }
.row select, select {
  background: var(--panel); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 10px; font: inherit; flex: 0 0 auto;
}
.compare {
  display: grid; grid-template-columns: 1fr; gap: 14px;
}
.compare > div > h3.meta { margin: 0 0 8px; font-size: 13px; }
@media (min-width: 720px) {
  .compare { grid-template-columns: 1fr 1fr; }
}
.report {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 18px;
}
.report h1 { font-size: 22px; margin-top: 0.2em; }
.report h2 { font-size: 18px; margin-top: 1.2em; }
.report h3 { font-size: 16px; margin-top: 1em; }
.report pre {
  background: #0b0e13; padding: 10px; border-radius: 6px;
  overflow-x: auto; font-size: 13px;
}
.report code {
  background: #0b0e13; padding: 1px 5px; border-radius: 4px;
  font-size: 0.9em; font-family: ui-monospace, SFMono-Regular, monospace;
}
.report table { border-collapse: collapse; margin: 1em 0; font-size: 14px; }
.report th, .report td { border: 1px solid var(--border); padding: 6px 10px; }
.report blockquote {
  border-left: 3px solid var(--accent); margin: 1em 0;
  padding: 0.2em 0 0.2em 12px; color: var(--muted);
}
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--border);
  padding: 10px 14px; border-radius: 8px; font-size: 14px;
  max-width: 90vw; z-index: 100;
}
.toast.err { border-color: var(--danger); color: var(--danger); }
.spinner {
  display: inline-block; width: 12px; height: 12px;
  border: 2px solid var(--muted); border-top-color: transparent;
  border-radius: 50%; animation: spin 0.8s linear infinite;
  vertical-align: -1px; margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }
details { margin-top: 12px; }
details summary { cursor: pointer; padding: 6px 0; }