/* kmp-bridge web demo — no build step, no dependencies, no framework. */

:root {
  --bg: #07060f;
  --ink: #f4f1ea;
  --ink-2: #b9b6cc;
  --ink-3: #7d7a95;
  --line: rgba(185, 167, 240, 0.16);
  --card: rgba(18, 16, 38, 0.72);
  --dusk: #4a4e8c;
  --lavender: #b9a7f0;
  --coral: #ff7a59;
  --mint: #5ff0d8;
  --cyan: #2ce6ff;
  --ok: #5ff0d8;
  --warn: #ffb38a;
  --bad: #ff7a59;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  overflow-x: hidden;
}

/* Background ------------------------------------------------------------ */

.aurora {
  position: fixed;
  inset: -30vh -20vw;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(48vw 40vh at 18% 12%, rgba(74, 78, 140, 0.55), transparent 68%),
    radial-gradient(42vw 36vh at 82% 8%, rgba(255, 122, 89, 0.24), transparent 66%),
    radial-gradient(52vw 46vh at 60% 96%, rgba(95, 240, 216, 0.16), transparent 70%);
  filter: blur(28px);
  animation: drift 42s ease-in-out infinite alternate;
}

.aurora::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(185, 167, 240, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185, 167, 240, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70vw 70vh at 50% 30%, #000 30%, transparent 78%);
}

@keyframes drift {
  from { transform: translate3d(-3%, -2%, 0) scale(1); }
  to   { transform: translate3d(3%, 3%, 0) scale(1.08); }
}

/* Masthead -------------------------------------------------------------- */

.masthead,
main,
footer,
.disclosure {
  position: relative;
  z-index: 1;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 28px;
}

.masthead { padding-top: 56px; }

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(140deg, var(--mint), var(--cyan) 45%, var(--dusk));
  box-shadow: 0 0 0 1px rgba(95, 240, 216, 0.35), 0 8px 30px rgba(44, 230, 255, 0.28);
}

.brand-name {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.06em;
}

.tagline {
  margin: 22px 0 0;
  max-width: 20ch;
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 600;
  background: linear-gradient(120deg, #fff 20%, var(--lavender) 62%, var(--mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  max-width: 24ch;
}

.build {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  margin: 30px 0 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 11px;
}

.build dt {
  color: var(--ink-3);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 9px;
}

.build dd { margin: 4px 0 0; color: var(--ink); }

.disclosure {
  margin: 34px auto 0;
  padding-top: 20px;
  padding-bottom: 20px;
  max-width: 1360px;
  color: var(--ink-2);
  font-size: 14px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.disclosure code { font-family: var(--mono); font-size: 12px; color: var(--mint); }

.disclosure strong { color: var(--ink); font-weight: 600; }

/* Layout ---------------------------------------------------------------- */

main {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  grid-template-areas:
    "console stage"
    "console inspector";
  gap: 26px;
  align-items: start;
  padding-top: 34px;
  padding-bottom: 40px;
}

.console { grid-area: console; position: sticky; top: 20px; }
.stage { grid-area: stage; }
.inspector { grid-area: inspector; }

@media (max-width: 1080px) {
  main {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "console" "stage" "inspector";
  }
  .console { position: static; }
}

section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  backdrop-filter: blur(14px);
}

.panel-head h2 {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: var(--mono);
  color: var(--mint);
  font-weight: 500;
}

.panel-head p { margin: 6px 0 16px; color: var(--ink-3); font-size: 12.5px; }

.panel-head.sub { margin-top: 26px; }

/* Form ------------------------------------------------------------------ */

.row { display: grid; gap: 10px; margin-bottom: 10px; }
.row.two { grid-template-columns: 1fr 1fr; }
.row.three { grid-template-columns: 1fr 1fr 1fr; }

label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-family: var(--mono);
}

input, select, button {
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
}

input, select {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 9px 10px;
  background: rgba(8, 7, 20, 0.72);
  border: 1px solid var(--line);
  border-radius: 9px;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

input:focus, select:focus {
  outline: none;
  border-color: rgba(95, 240, 216, 0.6);
  box-shadow: 0 0 0 3px rgba(95, 240, 216, 0.12);
}

input[name="origin"], input[name="destination"] {
  font-family: var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

select option { background: #12102a; }

.button-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

button {
  padding: 9px 10px;
  background: rgba(185, 167, 240, 0.07);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink-2);
  font-size: 12px;
  cursor: pointer;
  text-align: left;
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease, transform 0.1s ease;
}

button:hover { background: rgba(185, 167, 240, 0.16); color: var(--ink); border-color: rgba(185, 167, 240, 0.4); }
button:active { transform: translateY(1px); }

[data-attack] { border-color: rgba(255, 122, 89, 0.22); }
[data-attack]:hover { background: rgba(255, 122, 89, 0.16); border-color: rgba(255, 122, 89, 0.5); }

/* Drift switch ---------------------------------------------------------- */

.drift { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }

.switch { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; text-transform: none; letter-spacing: 0; font-family: var(--sans); }

.switch input { position: absolute; opacity: 0; width: 0; height: 0; }

.switch-track {
  flex: 0 0 auto;
  width: 38px;
  height: 22px;
  margin-top: 2px;
  border-radius: 999px;
  background: rgba(8, 7, 20, 0.9);
  border: 1px solid var(--line);
  position: relative;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-3);
  transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), background 0.2s ease;
}

.switch input:checked + .switch-track { background: rgba(255, 122, 89, 0.28); border-color: rgba(255, 122, 89, 0.6); }
.switch input:checked + .switch-track .switch-thumb { transform: translateX(16px); background: var(--coral); }
.switch input:focus-visible + .switch-track { box-shadow: 0 0 0 3px rgba(95, 240, 216, 0.2); }

.switch-label { font-size: 12px; color: var(--ink-3); line-height: 1.5; }
.switch-label strong { display: block; color: var(--ink); font-size: 13px; font-weight: 600; margin-bottom: 3px; }

/* Verdict --------------------------------------------------------------- */

.verdict {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(8, 7, 20, 0.6);
  font-size: 13.5px;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.verdict-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-3);
  flex: 0 0 auto;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.verdict-checksum { margin-left: auto; font-family: var(--mono); font-size: 11px; color: var(--ink-3); }

.verdict[data-state="agree"] { border-color: rgba(95, 240, 216, 0.42); background: rgba(95, 240, 216, 0.07); }
.verdict[data-state="agree"] .verdict-dot { background: var(--ok); box-shadow: 0 0 0 4px rgba(95, 240, 216, 0.16); }
.verdict[data-state="agree"] .verdict-checksum { color: var(--ok); }

.verdict[data-state="disagree"] { border-color: rgba(255, 122, 89, 0.5); background: rgba(255, 122, 89, 0.08); }
.verdict[data-state="disagree"] .verdict-dot { background: var(--bad); box-shadow: 0 0 0 4px rgba(255, 122, 89, 0.16); animation: pulse 1.4s ease-in-out infinite; }

.verdict[data-state="refused"] { border-color: rgba(255, 179, 138, 0.45); background: rgba(255, 179, 138, 0.07); }
.verdict[data-state="refused"] .verdict-dot { background: var(--warn); box-shadow: 0 0 0 4px rgba(255, 179, 138, 0.16); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255, 122, 89, 0.16); }
  50% { box-shadow: 0 0 0 9px rgba(255, 122, 89, 0.04); }
}

/* Host panels ----------------------------------------------------------- */

.hosts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.host {
  --accent: var(--mint);
  position: relative;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(8, 7, 20, 0.66);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.host.updating { animation: land 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); }

@keyframes land {
  0% { transform: translateY(4px) scale(0.994); }
  60% { transform: translateY(-2px) scale(1.004); }
  100% { transform: none; }
}

.host::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.65;
}

.host-chrome {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.host-glyph {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
}

.host-name { font-size: 13px; font-weight: 600; letter-spacing: -0.01em; }
.host-sub { font-family: var(--mono); font-size: 9.5px; color: var(--ink-3); letter-spacing: 0.04em; }

.host-body { padding: 15px 14px 14px; }

.host-route {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.host-route span { color: var(--ink-3); font-size: 11px; }

.host-when { margin: 4px 0 14px; color: var(--ink-3); font-size: 11.5px; }

.host-total {
  font-size: 27px;
  font-weight: 600;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s ease;
}

.host-total.flip { animation: flip 0.42s cubic-bezier(0.2, 0.8, 0.2, 1); }

@keyframes flip {
  0% { opacity: 0.25; transform: translateY(-6px) rotateX(28deg); }
  100% { opacity: 1; transform: none; }
}

.host-lines { margin: 12px 0 0; padding: 0; list-style: none; font-size: 11.5px; }

.host-lines li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 3.5px 0;
  color: var(--ink-3);
  border-bottom: 1px dashed rgba(185, 167, 240, 0.09);
}

.host-lines li span:last-child { color: var(--ink-2); font-variant-numeric: tabular-nums; }

.host-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 13px;
  padding-top: 11px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
}

.host-check {
  margin-left: auto;
  padding: 3px 7px;
  border-radius: 6px;
  background: rgba(95, 240, 216, 0.1);
  color: var(--ok);
  border: 1px solid rgba(95, 240, 216, 0.24);
  letter-spacing: 0.04em;
}

.host.odd { border-color: rgba(255, 122, 89, 0.55); }
.host.odd .host-check { background: rgba(255, 122, 89, 0.12); color: var(--bad); border-color: rgba(255, 122, 89, 0.4); }
.host.odd .host-total { color: var(--coral); }

.host-flag {
  display: none;
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 11.5px;
  line-height: 1.45;
}

.host.odd .host-flag { display: block; background: rgba(255, 122, 89, 0.09); color: var(--warn); border: 1px solid rgba(255, 122, 89, 0.22); }

.host-error {
  margin-top: 12px;
  padding: 9px 11px;
  border-radius: 9px;
  background: rgba(255, 179, 138, 0.09);
  border: 1px solid rgba(255, 179, 138, 0.24);
  color: var(--warn);
  font-size: 11.5px;
  line-height: 1.5;
}

.host-error code {
  display: block;
  margin-bottom: 3px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--coral);
}

/* Inspector ------------------------------------------------------------- */

.wire {
  max-height: 340px;
  overflow-y: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  scrollbar-width: thin;
}

.wire-row {
  display: grid;
  grid-template-columns: 26px 152px minmax(0, 1fr) 88px;
  gap: 12px;
  align-items: baseline;
  padding: 7px 4px;
  border-bottom: 1px solid rgba(185, 167, 240, 0.07);
  animation: slide 0.3s ease;
}

@keyframes slide {
  from { opacity: 0; transform: translateX(-6px); }
  to { opacity: 1; transform: none; }
}

.wire-seq { color: var(--ink-3); font-size: 10px; }
.wire-command { color: var(--lavender); }
.wire-payload { color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.wire-status { text-align: right; font-size: 10px; }
.wire-row.ok .wire-status { color: var(--ok); }
.wire-row.fail .wire-status { color: var(--bad); }
.wire-row.fail .wire-command { color: var(--coral); }

/* Footer ---------------------------------------------------------------- */

footer {
  padding-top: 34px;
  padding-bottom: 70px;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
  font-size: 13.5px;
  max-width: 820px;
}

footer .muted { color: var(--ink-3); font-size: 12px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}