:root {
  --ink: #08090c;
  --panel: #11141c;
  --panel-raised: #171b25;
  --line: #303647;
  --line-soft: rgba(255, 255, 255, 0.07);
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --faint: #71717a;
  --accent: #f25b29;
  --accent-hot: #ff7342;
  --success: #4ade80;
  --danger: #fb7185;
  font-family: "Pretendard Variable", Pretendard, Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--ink);
}

* {
  box-sizing: border-box;
}

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

body {
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
    radial-gradient(circle at 72% 18%, rgba(242, 91, 41, 0.13), transparent 34rem),
    var(--ink);
  background-size: 40px 40px, 40px 40px, auto, auto;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 18px;
}

.invite-panel {
  width: min(100%, 720px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(23, 27, 37, 0.96), rgba(12, 14, 20, 0.98));
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.48), inset 0 1px rgba(255, 255, 255, 0.06);
}

.brand-row,
.copy-block,
.token-card,
.actions,
.support-row,
.error {
  margin-inline: clamp(22px, 7vw, 64px);
}

.brand-row {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line-soft);
}

.brand,
.protocol,
.eyebrow,
.token-card dt,
.token-card dd {
  font-family: "JetBrains Mono", "Cascadia Mono", Consolas, monospace;
}

.brand {
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.protocol {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.signal {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 12px rgba(74, 222, 128, 0.72);
}

.route-line {
  height: 54px;
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto;
  align-items: center;
  padding-inline: clamp(22px, 7vw, 64px);
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--line-soft);
}

.route-node {
  width: 9px;
  height: 9px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
}

.route-node--active {
  border-color: var(--accent-hot);
  background: var(--accent);
  box-shadow: 0 0 18px rgba(242, 91, 41, 0.72);
}

.route-track {
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--line));
}

.copy-block {
  padding-top: clamp(42px, 8vw, 72px);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-hot);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

h1 {
  max-width: 600px;
  margin: 0;
  font-size: clamp(34px, 7.2vw, 60px);
  font-weight: 790;
  letter-spacing: -0.045em;
  line-height: 1.08;
  text-wrap: balance;
}

.description {
  max-width: 590px;
  margin: 26px 0 0;
  color: #d4d4d8;
  font-size: 16px;
  line-height: 1.72;
  word-break: keep-all;
}

.description--en {
  margin-top: 8px;
  color: var(--faint);
  font-size: 13px;
}

.token-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 38px;
  padding: 1px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--line);
  overflow: hidden;
}

.token-card div {
  min-width: 0;
  padding: 18px;
  background: var(--panel-raised);
}

.token-card dt {
  color: var(--faint);
  font-size: 9px;
  letter-spacing: 0.13em;
}

.token-card dd {
  margin: 8px 0 0;
  overflow: hidden;
  color: var(--text);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.token-card dd[data-state="valid"] {
  color: var(--success);
}

.token-card dd[data-state="invalid"] {
  color: var(--danger);
}

.error {
  margin-top: 18px;
  padding: 13px 14px;
  border: 1px solid rgba(251, 113, 133, 0.35);
  border-radius: 8px;
  color: #fecdd3;
  background: rgba(251, 113, 133, 0.08);
  font-size: 14px;
  line-height: 1.5;
}

.actions {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 12px;
  margin-top: 24px;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 0 18px;
  font-weight: 750;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease, transform 160ms ease;
}

.button--primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 10px 30px rgba(242, 91, 41, 0.2);
}

.button--primary:hover {
  background: var(--accent-hot);
  transform: translateY(-1px);
}

.button--secondary {
  color: var(--text);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.button--secondary:hover {
  border-color: #535f7f;
  background: rgba(255, 255, 255, 0.06);
}

.button[aria-disabled="true"],
.button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

.button:focus-visible,
.brand:focus-visible,
.support-row a:focus-visible {
  outline: 3px solid rgba(255, 115, 66, 0.78);
  outline-offset: 3px;
}

.support-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 38px;
  padding-block: 22px 28px;
  border-top: 1px solid var(--line-soft);
  color: var(--faint);
  font-size: 13px;
}

.support-row a {
  color: #d4d4d8;
  font-weight: 650;
  text-underline-offset: 4px;
}

@media (max-width: 560px) {
  .shell {
    align-items: start;
    padding: 12px;
  }

  .invite-panel {
    border-radius: 12px;
  }

  .brand-row {
    min-height: 66px;
  }

  .protocol {
    font-size: 8px;
  }

  .token-card,
  .actions {
    grid-template-columns: 1fr;
  }

  .support-row {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}