:root {
  --bg: #070909;
  --dim: #4a575b;
  --text: #8b9ca1;
  --bright: #dbe6e8;
  --live: #5fb3c4;
  --warn: #b8823f;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 13px/1.7 var(--mono);
  letter-spacing: .04em;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  padding: env(safe-area-inset-top, 0px) 24px env(safe-area-inset-bottom, 0px);
}

/* telemetry panel */
.viewport { margin: 13vh 0; }
.vp-head {
  display: flex;
  justify-content: space-between;
  color: var(--dim);
  font-size: 10px;
  letter-spacing: .26em;
  padding-bottom: 12px;
}
.vp-head b { font-weight: normal; }
.vp-frame {
  position: relative;
  height: 420px;
  border: 1px solid #161c1e;
  overflow: hidden;
}
#field { display: block; width: 100%; height: 100%; }

#tel {
  position: absolute;
  left: 14px;
  bottom: 12px;
  color: var(--dim);
  font-size: 10px;
  letter-spacing: .18em;
  line-height: 1.95;
  font-variant-numeric: tabular-nums;
}

/* one slow sweep, like a refresh line */
#scan {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to bottom, transparent 0%, rgba(95,179,196,.05) 50%, transparent 100%);
  background-size: 100% 180px;
  background-repeat: no-repeat;
  animation: sweep 9s linear infinite;
}
@keyframes sweep {
  from { background-position: 0 -200px; }
  to   { background-position: 0 440px; }
}

#boot, #record, #reveal {
  max-width: 860px;
  margin: 0 auto;
}

#boot {
  margin: 0;
  padding-block: 14vh;
  font: inherit;
  color: var(--dim);
  white-space: pre-wrap;
}

#record {
  padding-block: 12vh 8vh;
  animation: surface 1.4s ease both;
}
@keyframes surface { from { opacity: 0; } to { opacity: 1; } }

header .mark {
  color: var(--bright);
  font-size: 30px;
  letter-spacing: .46em;
  line-height: 1.2;
}
header .sub {
  margin-top: 10px;
  color: var(--dim);
  font-size: 11px;
}
header .sub b { color: var(--warn); font-weight: normal; }

.strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 22px 32px;
  margin: 11vh 0;
  border-top: 1px solid #161c1e;
  border-bottom: 1px solid #161c1e;
  padding: 26px 0;
}
.strip span {
  display: block;
  color: var(--dim);
  font-size: 10px;
  letter-spacing: .22em;
}
.strip b {
  display: block;
  margin-top: 7px;
  color: var(--live);
  font-size: 15px;
  font-weight: normal;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

h2 {
  margin: 0 0 26px;
  color: var(--dim);
  font-size: 10px;
  font-weight: normal;
  letter-spacing: .26em;
}

.log ol { margin: 0; padding: 0; list-style: none; }
.log li {
  display: flex;
  gap: 20px;
  padding: 9px 0;
  align-items: baseline;
}
.log time {
  flex: none;
  color: var(--dim);
  font-size: 11px;
}
.log li.flag p { color: var(--bright); }
.log p { margin: 0; }

.rd {
  color: #2b3335;
  background: #171e20;
  border-radius: 1px;
  padding: 0 1px;
  animation: settle 6s steps(1) infinite;
}
@keyframes settle { 0%, 96% { opacity: 1; } 97%, 100% { opacity: .55; } }

.note { margin: 30px 0 0; color: var(--dim); font-size: 11px; }

.gate { margin: 13vh 0; }
label {
  display: block;
  color: var(--dim);
  font-size: 10px;
  letter-spacing: .26em;
  margin-bottom: 14px;
}
.row {
  display: flex;
  gap: 12px;
  max-width: 420px;
  border-bottom: 1px solid #222b2d;
}
input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  padding: 10px 0;
  color: var(--bright);
  font: inherit;
  letter-spacing: .04em;
}
input::placeholder { color: #2f393b; letter-spacing: .2em; }
input:focus { outline: none; }
.row:focus-within { border-color: var(--live); }
button {
  background: none;
  border: 0;
  color: var(--dim);
  font: inherit;
  cursor: pointer;
  padding: 0 4px;
}
button:hover { color: var(--live); }

.verdict { margin: 18px 0 0; color: var(--live); font-size: 12px; }

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 34px;
  border-top: 1px solid #161c1e;
  padding-top: 24px;
  color: #2f393b;
  font-size: 10px;
  letter-spacing: .2em;
}

#reveal {
  padding-block: 10vh 16vh;
  margin: 0 auto;
  color: var(--warn);
  font: inherit;
  letter-spacing: .1em;
  white-space: pre-wrap;
}

@media (max-width: 640px) {
  .vp-frame { height: 260px; }
}

@media (max-width: 520px) {
  header .mark { font-size: 21px; letter-spacing: .34em; }
  .log li { flex-direction: column; gap: 4px; }
}