:root {
  color-scheme: dark;
  --ink: #eef6f7;
  --muted: #90a6aa;
  --panel: #142327;
  --panel-2: #1b3035;
  --line: #2c474d;
  --accent: #63d9c7;
  --warning: #ffbd59;
  --danger: #ff6b6b;
  --ok: #58d68d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 80% -10%, #245765 0, transparent 35rem),
    linear-gradient(145deg, #081316, #0c1b1f 55%, #102429);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header, nav, main, footer { width: min(1200px, calc(100% - 2rem)); margin-inline: auto; }
header { display: flex; justify-content: space-between; gap: 2rem; align-items: end; padding: 3.5rem 0 2rem; }
h1 { margin: .1rem 0; font-size: clamp(2rem, 6vw, 4.4rem); line-height: 1; letter-spacing: -.045em; }
.eyebrow { color: var(--accent); font: 700 .72rem/1.2 ui-monospace, monospace; letter-spacing: .16em; }
.subtitle, footer { color: var(--muted); }
.status { padding: .55rem .8rem; border: 1px solid var(--line); border-radius: 99px; white-space: nowrap; }
.status.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok), transparent 55%); }
.status.bad { color: var(--danger); border-color: color-mix(in srgb, var(--danger), transparent 55%); }
nav { display: flex; gap: .5rem; border-bottom: 1px solid var(--line); }
button, select, input {
  appearance: none; border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  border-radius: .55rem; padding: .65rem .85rem; font: inherit;
}
input::placeholder { color: var(--muted); }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .45; }
button.primary { background: var(--accent); border-color: var(--accent); color: #06201d; font-weight: 750; }
nav button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; color: var(--muted); }
nav button.active { color: var(--ink); border-bottom-color: var(--accent); }
main { padding: 1.4rem 0 4rem; min-height: 55vh; }
.view { display: none; }
.view.active { display: block; }
.toolbar { display: flex; flex-wrap: wrap; gap: .8rem; align-items: end; margin-bottom: 1.2rem; }
label { display: grid; gap: .3rem; color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; }
.image-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 1rem; }
.image-card, .alert-card, .receiver-card {
  overflow: hidden; border: 1px solid var(--line); background: color-mix(in srgb, var(--panel), transparent 8%);
  border-radius: .9rem; box-shadow: 0 18px 50px #0004;
}
.image-card img { display: block; width: 100%; min-height: 220px; object-fit: cover; background: #05090a; }
.card-body { padding: .85rem 1rem; }
.card-body h2, .alert-card h2 { margin: 0 0 .25rem; font-size: 1rem; }
.meta { color: var(--muted); font: .76rem/1.5 ui-monospace, monospace; }
.alert-list { display: grid; gap: .8rem; }
.alert-card { padding: 1rem; border-left: 4px solid var(--warning); }
.alert-card.warning { border-left-color: var(--danger); }
.alert-card details { margin-top: .7rem; }
.alert-card pre { white-space: pre-wrap; max-height: 22rem; overflow: auto; color: #c6d5d8; }
.search-label { flex: 1 1 16rem; }
.data-note { color: var(--muted); font-size: .85rem; }
.data-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: .8rem; background: color-mix(in srgb, var(--panel), transparent 8%); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: .75rem .8rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.data-table th { color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; white-space: nowrap; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table td { font-size: .84rem; }
.data-table td:first-child, .data-table td:nth-child(2), .data-table td:nth-child(5) { white-space: nowrap; }
.data-table td strong { display: block; max-width: 28rem; overflow-wrap: anywhere; }
.data-table td small { display: block; max-width: 32rem; color: var(--muted); overflow-wrap: anywhere; }
.data-kind { display: inline-block; padding: .2rem .45rem; border: 1px solid var(--line); border-radius: 99px; color: var(--accent); white-space: nowrap; }
.download-link { display: inline-block; padding: .35rem .55rem; border: 1px solid var(--accent); border-radius: .45rem; color: var(--accent); text-decoration: none; }
.expired { color: var(--muted); }
.data-footer { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-top: .8rem; }
.receiver-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.receiver-card { padding: 1rem; }
.receiver-card.stale { border-color: var(--danger); }
.receiver-card strong { display: block; font-size: 1.15rem; }
.alignment-toolbar { display: flex; flex-wrap: wrap; gap: .7rem; align-items: end; }
.alignment-note, .alignment-help { color: var(--muted); }
.alignment-panel {
  max-width: 850px; margin-top: 1.3rem; padding: clamp(1rem, 4vw, 2rem);
  border: 1px solid var(--line); border-radius: 1rem; background: color-mix(in srgb, var(--panel), transparent 4%);
  box-shadow: 0 18px 50px #0004;
}
.alignment-heading { display: flex; justify-content: space-between; align-items: start; gap: 1rem; }
.alignment-heading .eyebrow { margin-top: 0; }
.snr-reading { display: flex; align-items: baseline; gap: .5rem; }
.snr-reading span { font-size: clamp(3.5rem, 15vw, 7rem); font-weight: 750; line-height: .9; letter-spacing: -.07em; }
.snr-reading small { color: var(--muted); font-size: 1rem; }
.meter { height: 1rem; margin: 1.5rem 0; overflow: hidden; border-radius: 99px; background: #071114; border: 1px solid var(--line); }
.meter-fill { width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--danger), var(--warning) 45%, var(--ok)); transition: width .35s ease; }
#snr-chart { display: block; width: 100%; height: 150px; margin: 1rem 0; }
.decoder-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .65rem; }
.decoder-grid > div { min-height: 5rem; padding: .75rem; border: 1px solid var(--line); border-radius: .65rem; background: #09171a; }
.decoder-grid span { display: block; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.decoder-grid strong { display: block; margin-top: .4rem; font: 700 1rem/1.2 ui-monospace, monospace; }
.lock.ok { color: var(--ok); }
.lock.bad { color: var(--danger); }
.lock.unknown { color: var(--muted); }
.alignment-help { margin-bottom: 0; font-size: .85rem; }
.empty { color: var(--muted); padding: 2rem 0; }
footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1.2rem 0 2.5rem; border-top: 1px solid var(--line); font-size: .78rem; }
@media (max-width: 620px) {
  header { align-items: start; flex-direction: column; padding-top: 2rem; }
  .image-grid { grid-template-columns: 1fr; }
  nav { overflow-x: auto; }
  nav button { white-space: nowrap; }
  .alignment-toolbar { align-items: stretch; }
  .alignment-toolbar label, .alignment-toolbar button { flex: 1 1 100%; }
  .decoder-grid { grid-template-columns: repeat(2, 1fr); }
  .data-table { min-width: 760px; }
  footer { flex-direction: column; }
}