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

:root {
  --bg: #0a0e14;
  --surface: #10151c;
  --surface-2: #161c26;
  --border: #1f2733;
  --text: #e6e6e6;
  --muted: #8794a8;
  --accent: #7fdbca;
  --accent-dim: #3a6b63;
  --pass: #4ade80;
  --warn: #fbbf24;
  --fail: #f87171;
  --info: #94a3b8;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 28px 0 22px;
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}
header h1 {
  font-size: 28px;
  letter-spacing: 0.5px;
  font-weight: 700;
}
header .accent { color: var(--accent); }
header .tagline {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.3px;
}

main.wrap { padding-top: 28px; padding-bottom: 60px; }

section { margin-bottom: 32px; }

.controls .row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.controls label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  flex-basis: 100%;
  margin-bottom: 2px;
}
.controls input[type="text"] {
  flex: 1 1 280px;
  min-width: 0;
  height: 42px;
  padding: 0 14px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 14px;
  outline: none;
}
.controls input[type="text"]:focus {
  border-color: var(--accent);
}
button {
  height: 42px;
  padding: 0 16px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: background 0.12s, border-color 0.12s;
}
button:hover { background: var(--surface-2); border-color: var(--accent-dim); }
button.primary {
  background: var(--accent);
  color: #0a0e14;
  border-color: var(--accent);
}
button.primary:hover { background: #8ee8d7; }

.row.buttons { gap: 8px; }
.row.buttons button { flex: 0 0 auto; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 14px;
  overflow: hidden;
}
.card details summary {
  padding: 14px 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: 0.3px;
  list-style: none;
  user-select: none;
}
.card details summary::-webkit-details-marker { display: none; }
.card details summary::after {
  content: "▸";
  margin-left: auto;
  color: var(--muted);
  transition: transform 0.15s;
}
.card details[open] summary::after { transform: rotate(90deg); }
.card .sum { color: var(--muted); font-weight: 400; font-size: 13px; }
.card .body {
  padding: 0 18px 16px;
  border-top: 1px solid var(--border);
}

.status {
  display: inline-block;
  min-width: 62px;
  padding: 2px 8px;
  font-size: 11px;
  text-align: center;
  border-radius: 3px;
  background: var(--surface-2);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}
.status.pass  { background: rgba(74,222,128,0.12); color: var(--pass); }
.status.warn  { background: rgba(251,191,36,0.12); color: var(--warn); }
.status.fail  { background: rgba(248,113,113,0.12); color: var(--fail); }
.status.info  { background: rgba(148,163,184,0.12); color: var(--info); }
.status.error { background: rgba(248,113,113,0.12); color: var(--fail); }
.status.loading { background: var(--surface-2); color: var(--accent); }

.findings { list-style: none; margin-top: 12px; }
.findings li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
}
.findings li:last-child { border-bottom: none; }
.findings .icon { flex: 0 0 16px; font-weight: 700; font-family: var(--mono); }
.findings .icon.pass { color: var(--pass); }
.findings .icon.warn { color: var(--warn); }
.findings .icon.fail { color: var(--fail); }
.findings .icon.info { color: var(--info); }
.findings .text { flex: 1; }
.findings .detail { color: var(--muted); font-size: 12px; margin-top: 2px; }

pre.raw {
  margin-top: 12px;
  background: #060a0f;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 12px;
  overflow-x: auto;
  color: #b8c5d6;
  white-space: pre-wrap;
  word-break: break-all;
}

.copy {
  margin-top: 8px;
  font-size: 11px;
  height: 28px;
  padding: 0 10px;
  background: var(--surface-2);
}

textarea {
  width: 100%;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
  font-family: var(--mono);
  font-size: 12px;
  margin: 10px 0;
  resize: vertical;
}
textarea:focus { outline: none; border-color: var(--accent); }

.hint { color: var(--muted); font-size: 13px; }

.loader {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

h2 { font-size: 16px; font-weight: 700; letter-spacing: 0.3px; margin-bottom: 8px; }

.auth-results { margin-top: 10px; padding: 10px; background: var(--surface-2); border-radius: 3px; }
.received-hop { padding: 8px 10px; margin-top: 8px; background: var(--surface-2); border-radius: 3px; font-family: var(--mono); font-size: 12px; }
.received-hop .delay { color: var(--muted); }

.bimi-logo { margin-top: 14px; padding: 18px; background: #fff; border-radius: 3px; max-width: 200px; }
.bimi-logo svg { width: 100%; height: auto; }

footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}
footer a { color: var(--accent); text-decoration: none; }

@media (max-width: 768px) {
  header h1 { font-size: 22px; }
  .wrap { padding: 16px; }
  .controls input[type="text"],
  .controls button { flex: 1 1 100%; }
  .row.buttons button { flex: 1 1 calc(50% - 4px); }
  .card details summary { padding: 12px 14px; flex-wrap: wrap; }
  .card .body { padding: 0 14px 14px; }
}