/* ---------------------------------------------------------------------------
   AI4 relocation board.
   A migration is a departure, so the page is built like a departure board:
   the destination is the biggest thing in the room and it flips when it
   changes. Everything else stays flat and quiet.
   No web fonts — conference wifi cannot be trusted.
--------------------------------------------------------------------------- */

:root {
  --board: #0c2429;
  --board-deep: #081a1e;
  --flap: #143a41;
  --flap-edge: #061417;
  --bone: #f0eadd;
  --lamp: #ff5b47;
  --go: #35e0c0;
  --dim: #6e9299;
  --rule: rgba(240, 234, 221, 0.14);

  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 clamp(1rem, 4vw, 3.5rem) 3rem;
  background: var(--board);
  background-image: radial-gradient(ellipse 90% 60% at 50% -10%, var(--flap) 0%, var(--board) 55%, var(--board-deep) 100%);
  background-attachment: fixed;
  color: var(--bone);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* --- top bar ------------------------------------------------------------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.topbar__lamp {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--dim);
  flex: none;
}

.topbar__lamp[data-state="aws"] {
  background: var(--lamp);
  box-shadow: 0 0 0 4px rgba(255, 91, 71, 0.18);
}

.topbar__lamp[data-state="cycle"] {
  background: var(--go);
  box-shadow: 0 0 0 4px rgba(53, 224, 192, 0.18);
}

.topbar__lamp[data-state="down"] {
  background: var(--lamp);
  animation: blink 1s steps(2, end) infinite;
}

.topbar__title { color: var(--dim); }
.topbar__clock { margin-left: auto; color: var(--dim); }

@keyframes blink { 50% { opacity: 0.15; } }

/* --- signature: the flap marquee ---------------------------------------- */

.marquee {
  padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(1.5rem, 3vw, 2.5rem);
}

.marquee__eyebrow {
  margin: 0 0 1.25rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--dim);
}

.marquee__flaps {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(3px, 0.5vw, 7px);
}

.flap {
  position: relative;
  width: clamp(2.1rem, 6.4vw, 5rem);
  height: clamp(3rem, 9vw, 7rem);
  background: linear-gradient(var(--flap) 0 50%, #10312f 50% 100%);
  border-radius: 3px;
  overflow: hidden;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 3.6rem);
  line-height: 1;
  color: var(--bone);
}

/* the hairline where the two halves of a real flap meet */
.flap::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--flap-edge);
}

.flap--blank { color: transparent; }

.flap[data-flipping="true"] {
  animation: flip 90ms linear;
}

@keyframes flip {
  0%   { transform: perspective(320px) rotateX(0deg); }
  50%  { transform: perspective(320px) rotateX(-52deg); filter: brightness(0.55); }
  100% { transform: perspective(320px) rotateX(0deg); }
}

.marquee__route {
  margin: 1.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.25rem;
  font-family: var(--mono);
  font-size: clamp(0.8rem, 1.5vw, 1rem);
}

.marquee__host { color: var(--bone); word-break: break-all; }
.marquee__db { color: var(--dim); }

/* --- facts strip --------------------------------------------------------- */

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.fact {
  padding: 1.15rem 1.4rem 1.15rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.fact__key {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

.fact__value {
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--bone);
}

/* --- alert -------------------------------------------------------------- */

.alert {
  margin: 1.5rem 0 0;
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--lamp);
  background: rgba(255, 91, 71, 0.09);
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--bone);
}

/* --- manifest ----------------------------------------------------------- */

.manifest { padding: clamp(2rem, 5vw, 3.5rem) 0 0; }

.manifest__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.manifest__title,
.samples__title {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--dim);
}

.manifest__button {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: border-color 120ms, color 120ms;
}

.manifest__button:hover { border-color: var(--go); color: var(--go); }
.manifest__button:disabled { opacity: 0.4; cursor: progress; }

.ledger {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
}

.ledger th {
  text-align: left;
  padding: 0 0 0.7rem;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
  border-bottom: 1px solid var(--rule);
}

.ledger td {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule);
}

.ledger__num { text-align: right; }
.ledger__empty { color: var(--dim); }
.ledger__match { color: var(--go); }
.ledger__mismatch { color: var(--lamp); }

.fingerprint {
  margin: 1.75rem 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.4rem 1.1rem;
}

.fingerprint__key {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

.fingerprint__value {
  font-family: var(--mono);
  font-size: clamp(1.1rem, 2.4vw, 1.7rem);
  letter-spacing: 0.1em;
  color: var(--go);
}

.fingerprint__note {
  font-size: 0.8rem;
  color: var(--dim);
  flex-basis: 100%;
}

/* --- samples ------------------------------------------------------------ */

.samples { padding: clamp(2rem, 5vw, 3.5rem) 0 0; }

.samples__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1.25rem 0 1.5rem;
}

.tab {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
}

.tab[aria-selected="true"] {
  color: var(--board-deep);
  background: var(--bone);
  border-color: var(--bone);
}

.samples__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 290px), 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.doc {
  background: var(--board);
  padding: 1.1rem 1.2rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
}

.doc__id {
  color: var(--go);
  margin-bottom: 0.6rem;
  word-break: break-all;
}

.doc__row { display: flex; gap: 0.6rem; }
.doc__key { color: var(--dim); flex: none; min-width: 9.5rem; }
.doc__val { color: var(--bone); word-break: break-word; }

/* --- footer ------------------------------------------------------------- */

.footer {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  font-size: 0.78rem;
  color: var(--dim);
}

.footer code {
  font-family: var(--mono);
  color: var(--bone);
}

/* --- accessibility floor ------------------------------------------------ */

:focus-visible {
  outline: 2px solid var(--go);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .flap[data-flipping="true"] { animation: none; }
  .topbar__lamp[data-state="down"] { animation: none; }
  * { transition-duration: 0ms !important; }
}