.gate-page {
  min-height: 100vh;
}
.gate-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 24px;
  box-sizing: border-box;
}
.gate-brand {
  width: min(380px, 100%);
  max-width: 380px;
}
.gate-card {
  position: relative;
  width: min(380px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  box-sizing: border-box;
  overflow: hidden;
}
.gate-card h1 {
  margin: 0 0 6px;
  font-size: 22px;
}
.gate-lead {
  margin: 0 0 20px;
  color: var(--muted);
}
.gate-card label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
}
.gate-card input {
  width: 100%;
  box-sizing: border-box;
  font-size: 18px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.gate-card button {
  width: 100%;
}
#gate-error {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 6px;
  background: var(--error-bg);
  border: 1px solid var(--ignis);
}
#gate-form {
  transition: filter 0.2s;
}
.gate-card.busy #gate-form {
  filter: blur(5px);
  pointer-events: none;
  user-select: none;
}
.gate-busy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-weight: 600;
}
.gate-spinner {
  width: 38px;
  height: 38px;
  border: 4px solid var(--line);
  border-top-color: var(--viridis);
  border-radius: 50%;
  animation: gate-spin 0.8s linear infinite;
}
@keyframes gate-spin {
  to {
    transform: rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .gate-spinner {
    animation-duration: 3s;
  }
  #gate-form {
    transition: none;
  }
}