/* Pearl Watch — the lighthouse. Deep oceanic night, a sweeping beam,
 * lantern amber and seafoam signal lights on dark glass. */
:root {
  --night: #060d18;
  --deep: #0a1626;
  --panel: #0d1b30;
  --panel2: #102139;
  --line: #1e3353;
  --ink: #e8eef7;
  --dim: #8fa3bd;
  --lantern: #ffd166;   /* the lamp */
  --beam: #ffe9a8;
  --seafoam: #7df0c8;   /* all-clear */
  --signal: #ff6b6b;    /* alert */
  --tide: #4aa3c7;      /* links/accents */
  --radius: 12px;
}
* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font: 15px/1.55 -apple-system, "Segoe UI", system-ui, Roboto, sans-serif;
  min-height: 100vh;
}
/* animated night sky + sweeping beam */
.nightsky { position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background: radial-gradient(1200px 600px at 70% -10%, #12294a 0%, var(--night) 60%); }
.nightsky .stars { position: absolute; inset: 0;
  background-image: radial-gradient(1px 1px at 12% 22%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 32% 8%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 52% 30%, #cfe0ff 50%, transparent 51%),
    radial-gradient(1px 1px at 68% 14%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 84% 34%, #cfe0ff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 92% 10%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 44% 44%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 6% 48%, #cfe0ff 50%, transparent 51%);
  opacity: .5; }
.nightsky .beam { position: absolute; top: -12%; left: 55%; width: 46%; height: 60%;
  background: linear-gradient(100deg, transparent 40%, rgba(255, 209, 102, .10) 62%, transparent 78%);
  transform-origin: 8% 0; animation: sweep 14s ease-in-out infinite alternate; }
@keyframes sweep { from { transform: rotate(-14deg); } to { transform: rotate(14deg); } }

.topbar { display: flex; flex-wrap: wrap; gap: 16px; align-items: center;
  padding: 18px 26px; border-bottom: 1px solid var(--line);
  background: rgba(6, 13, 24, .82); backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 10; }
.brand { display: flex; gap: 14px; align-items: center; margin-right: auto; }
.seal { width: 44px; height: 48px; flex: none; }
.brand h1 { margin: 0; font-size: 26px; letter-spacing: .5px; color: var(--lantern); }
.tagline { margin: 2px 0 0; color: var(--dim); font-size: 13px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.tabs button { background: transparent; border: 1px solid var(--line); color: var(--dim);
  padding: 8px 14px; border-radius: 999px; cursor: pointer; font-size: 14px; }
.tabs button.active { border-color: var(--lantern); color: var(--lantern);
  box-shadow: 0 0 12px rgba(255, 209, 102, .25); }
.tabs button:hover { color: var(--ink); border-color: var(--tide); }
.pill { background: var(--signal); color: #180606; border-radius: 999px;
  font-size: 11px; padding: 1px 7px; margin-left: 4px; font-weight: 700; }
.pill.zero { background: var(--line); color: var(--dim); }

main { max-width: 1180px; margin: 0 auto; padding: 22px 20px 60px; }
.limits { border: 1px solid var(--line); border-left: 4px solid var(--lantern);
  background: rgba(13, 27, 48, .85); border-radius: var(--radius);
  padding: 14px 20px; margin-bottom: 18px; }
.limits h2 { margin: 0 0 8px; font-size: 15px; color: var(--lantern); }
.limits ul { margin: 0; padding-left: 20px; color: var(--dim); font-size: 13.5px; }
.limits strong { color: var(--ink); }
.limits code { color: var(--beam); overflow-wrap: anywhere; }
.limits li { overflow-wrap: anywhere; }

.netbar { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 16px; margin-bottom: 18px; }
label { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: var(--dim); }
label.grow { flex: 1 1 280px; }
input[type=text], select { background: #081221; border: 1px solid var(--line);
  color: var(--ink); border-radius: 8px; padding: 9px 11px; font-size: 14px; }
input[type=text]:focus, select:focus { outline: none; border-color: var(--lantern);
  box-shadow: 0 0 0 2px rgba(255, 209, 102, .2); }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13px; }
button { background: var(--panel2); border: 1px solid var(--line); color: var(--ink);
  padding: 9px 16px; border-radius: 8px; cursor: pointer; font-size: 14px; }
button:hover { border-color: var(--tide); }
button.primary { background: var(--lantern); border-color: var(--lantern);
  color: #241a05; font-weight: 700; }
button.primary:hover { filter: brightness(1.08); }
button.danger { border-color: #5a2b2b; color: var(--signal); }
button:disabled { opacity: .45; cursor: not-allowed; }
.status { font-size: 13px; color: var(--dim); }
.status.ok { color: var(--seafoam); }
.status.bad { color: var(--signal); }

.tab { display: none; }
.tab.active { display: block; }
.panel { background: rgba(13, 27, 48, .88); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 22px; }
.panel h2 { margin: 0 0 14px; font-size: 19px; color: var(--beam); }
.hint { color: var(--dim); font-size: 13px; font-weight: 400; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 10px 0; }
.row.small { font-size: 13px; }
.spacer { flex: 1; }
.dim { color: var(--dim); font-size: 13px; }
.err { color: var(--signal); background: rgba(255, 107, 107, .08);
  border: 1px solid #5a2b2b; border-radius: 8px; padding: 10px 14px; }
.big { font-size: 17px; }

.table-wrap { overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 13.5px; }
.tbl th { text-align: left; color: var(--dim); font-weight: 600; font-size: 12px;
  text-transform: uppercase; letter-spacing: .6px; padding: 8px 10px;
  border-bottom: 1px solid var(--line); }
.tbl td { padding: 9px 10px; border-bottom: 1px solid rgba(30, 51, 83, .5);
  vertical-align: top; word-break: break-all; }
.tbl tr.empty td { color: var(--dim); text-align: center; padding: 22px; }
.tbl .num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl .kind-in { color: var(--seafoam); font-weight: 700; }
.tbl .kind-out { color: var(--signal); font-weight: 700; }
.tbl .kind-cross { color: var(--lantern); font-weight: 700; }
.tbl .kind-conf { color: var(--tide); font-weight: 700; }
.rowbtn { padding: 4px 10px; font-size: 12.5px; }

.ruleform { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap;
  background: var(--panel2); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.ruleform .grow { flex: 1 1 240px; }
.check { flex-direction: row; align-items: center; gap: 8px; font-size: 14px; color: var(--ink); }

.lamp { height: 26px; margin: 12px 0 4px; position: relative; overflow: hidden;
  border: 1px solid var(--line); border-radius: 999px; background: #081221; }
.lamp i { position: absolute; top: 0; bottom: 0; left: -30%; width: 30%;
  background: linear-gradient(90deg, transparent, rgba(255, 209, 102, .55), transparent); }
.lamp.on i { animation: sweepbar 2.2s linear infinite; }
@keyframes sweepbar { from { left: -30%; } to { left: 100%; } }

.meter { height: 18px; border: 1px solid var(--line); border-radius: 999px;
  background: #081221; overflow: hidden; margin: 14px 0 6px; }
.meter i { display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--tide), var(--seafoam));
  transition: width .5s ease; }

footer { border-top: 1px solid var(--line); padding: 22px 26px 40px;
  color: var(--dim); font-size: 13px; text-align: center; }
footer a { color: var(--tide); }
footer .addr { color: var(--beam); font-size: 12px; word-break: break-all; }
@media (max-width: 720px) {
  .topbar { padding: 14px; }
  .tbl .num { white-space: nowrap; }
}

/* Keyboard focus: a visible ring in this app's accent on every interactive element (fleet focus-visible pass). */
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; }

/* Skip link: the first Tab stop on the page — parked off-screen until keyboard focus reveals it (fleet skip-link pass). */
.skip-link { position: absolute; left: 12px; top: -64px; z-index: 1000; padding: 10px 16px; border: 2px solid var(--signal); border-radius: 8px; background: #0b0e14; color: var(--signal); font-weight: 700; text-decoration: none; transition: top .15s ease; }
.skip-link:focus-visible { top: 12px; }
main:focus { outline: none; }

/* Reduced motion: when the OS asks for reduced motion, animations and transitions finish near-instantly and scrolling is not smoothed (fleet reduced-motion pass). Near-zero durations — not animation: none — so fade-ins still land on their end state and no content can be stranded invisible. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}