:root {
  --bg: #080e18;
  --panel: rgba(19, 28, 44, 0.88);
  --panel-strong: #131c2c;
  --line: rgba(128, 238, 255, 0.14);
  --text: #eef6ff;
  --muted: #8ea0b8;
  --cyan: #80eeff;
  --cyan-dim: rgba(128, 238, 255, 0.12);
  --green: #34c759;
  --amber: #ffb340;
  --red: #ff453a;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

* { box-sizing: border-box; }

html, body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(1100px 600px at 85% -10%, rgba(128, 238, 255, 0.12), transparent 60%),
    radial-gradient(900px 500px at 5% 100%, rgba(40, 95, 170, 0.16), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.015) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.015) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 10%, black, transparent 78%);
}

.page {
  position: relative;
  width: min(940px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 36px;
}

.hero {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 30px;
}

.mark {
  position: relative;
  width: 74px;
  height: 74px;
  flex: 0 0 auto;
  border-radius: 22px;
  background: linear-gradient(145deg, #1a2436, #0e1624);
  border: 1px solid rgba(128, 238, 255, 0.22);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255,255,255,.06);
}

.mark span {
  position: absolute;
  left: 16px;
  right: 16px;
  height: 18px;
  border-top: 5px solid var(--cyan);
  border-left: 5px solid var(--cyan);
  border-right: 5px solid var(--cyan);
  transform: rotate(45deg);
  border-radius: 2px;
}

.mark span:first-child { top: 22px; }
.mark span:last-child { top: 38px; opacity: .7; }

h1 {
  margin: 2px 0 4px;
  font-size: clamp(34px, 6vw, 52px);
  line-height: 1;
  letter-spacing: -0.04em;
  font-weight: 650;
}

.eyebrow {
  margin: 0;
  color: var(--cyan);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.tagline {
  margin: 0;
  max-width: 560px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.55;
}

.card {
  background: linear-gradient(165deg, rgba(23, 34, 53, 0.94), rgba(13, 20, 33, 0.94));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.card + .card { margin-top: 18px; }

.card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

h2 {
  margin: 4px 0 0;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.07);
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
}

.status-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 3px rgba(142, 160, 184, 0.12);
}

.status-pill.status-online { color: #bdf5c9; border-color: rgba(52, 199, 89, .22); }
.status-pill.status-online .dot { background: var(--green); box-shadow: 0 0 0 3px rgba(52, 199, 89, .16); }
.status-pill.status-offline { color: #ffd9d6; border-color: rgba(255, 69, 58, .2); }
.status-pill.status-offline .dot { background: var(--red); box-shadow: 0 0 0 3px rgba(255, 69, 58, .14); }
.status-pill.status-waiting { color: #ffe6b8; border-color: rgba(255, 179, 64, .2); }
.status-pill.status-waiting .dot { background: var(--amber); box-shadow: 0 0 0 3px rgba(255, 179, 64, .14); }

.hint {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.hint strong { color: #cfe5f5; font-weight: 600; }
.hint.small { font-size: 11.5px; margin: 12px 0 0; }

.pair-row {
  display: flex;
  gap: 10px;
}

input {
  flex: 1;
  min-width: 0;
  height: 46px;
  padding: 0 15px;
  border-radius: 12px;
  border: 1px solid rgba(128, 238, 255, 0.16);
  background: rgba(5, 10, 18, 0.72);
  color: var(--text);
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-size: 15px;
  letter-spacing: 0.08em;
  outline: none;
  transition: border-color .16s, box-shadow .16s;
}

input::placeholder { color: #56677e; letter-spacing: 0.02em; }

input:focus {
  border-color: rgba(128, 238, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(128, 238, 255, 0.1);
}

button {
  font: inherit;
  color: var(--text);
  cursor: pointer;
  border: 0;
  outline: none;
}

button:focus-visible {
  box-shadow: 0 0 0 3px rgba(128, 238, 255, 0.22);
}

.primary {
  height: 46px;
  padding: 0 22px;
  border-radius: 12px;
  background: var(--cyan);
  color: #07121a;
  font-weight: 700;
  font-size: 13.5px;
  transition: transform .12s, filter .12s;
}

.primary:hover { filter: brightness(1.06); }
.primary:active { transform: translateY(1px); }
.primary:disabled { opacity: .45; cursor: default; }

.bridge-state {
  padding: 6px 10px;
  border-radius: 8px;
  background: rgba(128, 238, 255, 0.07);
  border: 1px solid rgba(128, 238, 255, 0.12);
  color: var(--cyan);
  font-family: "Cascadia Mono", "Consolas", monospace;
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.control-grid button {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 62px;
  padding: 11px 14px;
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.065);
  text-align: left;
  font-size: 12.5px;
  font-weight: 550;
  line-height: 1.25;
  transition: background .15s, border-color .15s, transform .12s;
}

.control-grid button:hover {
  background: rgba(128, 238, 255, 0.07);
  border-color: rgba(128, 238, 255, 0.22);
}

.control-grid button:active { transform: translateY(1px); }

.control-grid button:disabled {
  opacity: .35;
  cursor: default;
  transform: none;
}

.glyph {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  border-radius: 9px;
  background: rgba(128, 238, 255, 0.08);
  color: var(--cyan);
  font-size: 17px;
  font-weight: 500;
}

.glyph.up { color: var(--cyan); }
.glyph.down { color: #ff7b6f; background: rgba(255, 69, 58, .08); }
.glyph.strong { font-weight: 800; }

.toast {
  min-height: 18px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.toast.error { color: #ff9b93; }
.toast.good { color: #9feab0; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 22px;
  padding: 0 4px;
  color: #5e728a;
  font-size: 11px;
}

.mono { font-family: "Cascadia Mono", "Consolas", monospace; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

@media (max-width: 720px) {
  .page { padding-top: 34px; }
  .hero { gap: 16px; }
  .mark { width: 58px; height: 58px; border-radius: 17px; }
  .mark span { left: 13px; right: 13px; height: 14px; border-width: 4px; }
  .mark span:first-child { top: 17px; }
  .mark span:last-child { top: 30px; }
  .control-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  footer { flex-direction: column; gap: 6px; }
}

@media (max-width: 460px) {
  .pair-row { flex-direction: column; }
  .primary { width: 100%; }
  .card { padding: 19px; border-radius: 18px; }
}