:root {
  --bg: #0b1b2b;
  --bg-deep: #071421;
  --panel: #12263a;
  --line: rgba(130, 185, 255, 0.18);
  --text: #e8f0ff;
  --muted: rgba(232, 240, 255, 0.68);
  --quiet: rgba(232, 240, 255, 0.46);
  --accent: #76c7ff;
  --accent-strong: #39a9ff;
  --ok: #7ee787;
  --warn: #f7d774;
  --bad: #ff8d8d;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.26);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background:
    radial-gradient(circle at 14% 8%, rgba(118, 199, 255, 0.14), transparent 28%),
    radial-gradient(circle at 88% 6%, rgba(57, 169, 255, 0.12), transparent 30%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--text);
}

a {
  color: inherit;
}

.asn-header,
.asn-shell,
.asn-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.asn-header {
  padding: 28px 0 18px;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 0.92rem;
}

.top-nav a {
  color: var(--accent);
  text-decoration: none;
}

.top-nav a:hover,
.top-nav a:focus-visible {
  text-decoration: underline;
}

.top-nav span::before {
  content: "/";
  margin-right: 10px;
  color: var(--quiet);
}

.header-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 18px;
  align-items: end;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 5vw, 3.35rem);
  line-height: 1;
}

h2 {
  margin-bottom: 10px;
  font-size: 1.05rem;
}

code {
  color: var(--text);
  font-family: Consolas, "Courier New", monospace;
}

.sub,
.panel p,
.asn-footer {
  color: var(--muted);
}

.sub {
  max-width: 62ch;
  margin-bottom: 0;
}

.signal-panel,
.panel {
  background:
    linear-gradient(180deg, rgba(23, 52, 79, 0.76), rgba(18, 38, 58, 0.94)),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.signal-panel {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 10px;
  padding: 16px;
  color: var(--muted);
}

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

.signal-panel span:last-child {
  grid-column: 2;
  font-size: 0.88rem;
}

.signal-dot {
  width: 10px;
  height: 10px;
  margin-top: 5px;
  border-radius: 999px;
  background: var(--ok);
  box-shadow: 0 0 18px rgba(126, 231, 135, 0.5);
}

.signal-dot.warn {
  background: var(--warn);
  box-shadow: 0 0 18px rgba(247, 215, 116, 0.45);
}

.signal-dot.bad {
  background: var(--bad);
  box-shadow: 0 0 18px rgba(255, 141, 141, 0.42);
}

.asn-shell {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 16px;
  padding-bottom: 28px;
}

.panel {
  min-width: 0;
  padding: 18px;
}

.query-panel,
.prefixes-panel {
  grid-column: 1;
}

.query-panel {
  grid-row: 1;
}

.prefixes-panel {
  grid-row: 2 / span 2;
}

.summary-panel,
.metrics-panel,
.neighbours-panel {
  grid-column: 2;
}

.summary-panel {
  grid-row: 1;
}

.metrics-panel {
  grid-row: 2;
}

.neighbours-panel {
  grid-row: 3;
}

.raw-panel {
  grid-column: 1 / -1;
  grid-row: 4;
}

.panel-head {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 16px;
}

.badge {
  flex: 0 0 auto;
  padding: 5px 9px;
  color: var(--quiet);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.badge.ok {
  color: var(--ok);
  border-color: rgba(126, 231, 135, 0.34);
}

.badge.warn {
  color: var(--warn);
  border-color: rgba(247, 215, 116, 0.34);
}

.badge.bad {
  color: var(--bad);
  border-color: rgba(255, 141, 141, 0.34);
}

.asn-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.84rem;
}

input,
button {
  font: inherit;
}

input {
  width: 100%;
  min-height: 44px;
  color: var(--text);
  background: rgba(7, 20, 33, 0.72);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0 12px;
}

input:focus,
button:focus-visible {
  outline: 2px solid rgba(118, 199, 255, 0.42);
  outline-offset: 2px;
}

button {
  min-height: 42px;
  cursor: pointer;
  color: #061320;
  font-weight: 700;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  border: 0;
  border-radius: 10px;
}

button:hover {
  filter: brightness(1.05);
}

.summary-grid,
.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.summary-grid div,
.metric-card,
.record-list li {
  min-width: 0;
  padding: 13px;
  background: rgba(7, 20, 33, 0.42);
  border: 1px solid rgba(130, 185, 255, 0.12);
  border-radius: 12px;
}

dt,
.metric-card span {
  color: var(--quiet);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

dd {
  margin: 6px 0 0;
  color: var(--text);
  overflow-wrap: anywhere;
}

.metric-card strong {
  display: block;
  margin-top: 8px;
  color: var(--accent);
  font-family: Consolas, "Courier New", monospace;
  font-size: 1.55rem;
}

.record-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.record-list li {
  display: grid;
  gap: 5px;
  color: rgba(232, 240, 255, 0.86);
  overflow-wrap: anywhere;
}

.record-list strong {
  color: var(--text);
  font-family: Consolas, "Courier New", monospace;
}

.record-list span,
.empty {
  color: var(--quiet);
}

.external-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.query-links {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(130, 185, 255, 0.12);
}

.query-links h2 {
  margin-bottom: 12px;
}

.external-links a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  color: var(--accent);
  text-decoration: none;
  background: rgba(118, 199, 255, 0.08);
  border: 1px solid rgba(118, 199, 255, 0.2);
  border-radius: 999px;
}

.external-links a:hover,
.external-links a:focus-visible {
  text-decoration: underline;
}

pre {
  min-height: 180px;
  max-height: 360px;
  overflow: auto;
  margin: 0;
  padding: 14px;
  color: rgba(232, 240, 255, 0.78);
  background: rgba(7, 20, 33, 0.72);
  border: 1px solid rgba(130, 185, 255, 0.12);
  border-radius: 12px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.86rem;
  line-height: 1.55;
}

.raw-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.raw-details summary::-webkit-details-marker {
  display: none;
}

.raw-details summary span:first-child {
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
}

.raw-details__hint {
  padding: 5px 9px;
  color: var(--quiet);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.raw-details[open] .raw-details__hint {
  color: var(--accent);
  border-color: rgba(118, 199, 255, 0.34);
}

.raw-details[open] pre {
  margin-top: 14px;
}

.asn-footer {
  padding: 0 0 26px;
  color: rgba(232, 240, 255, 0.46);
  text-align: left;
}

.footer-copy {
  color: rgba(232, 240, 255, 0.46);
}

@media (max-width: 860px) {
  .header-grid,
  .asn-shell,
  .summary-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .query-panel,
  .summary-panel,
  .metrics-panel,
  .prefixes-panel,
  .neighbours-panel,
  .raw-panel {
    grid-column: auto;
    grid-row: auto;
  }
}

@media (max-width: 560px) {
  .asn-header,
  .asn-shell,
  .asn-footer {
    width: min(100% - 28px, 1120px);
  }

  .asn-header {
    padding-top: 22px;
  }

  .panel {
    padding: 15px;
  }
}