/* Keystone login background visuals (simplified + deterministic) */
.login-body {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(140deg, #223c67 0%, #152945 50%, #0c182d 100%);
}

.keystone-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.keystone-lines {
  position: absolute;
  inset: 0 auto 0 50%;
  width: min(94vw, 1200px);
  height: 100%;
  transform: translateX(-50%);
}

.keystone-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--x);
  width: 1px;
  background: linear-gradient(
    to bottom,
    rgba(219, 233, 255, 0) 0%,
    rgba(219, 233, 255, 0.2) 10%,
    rgba(219, 233, 255, 0.14) 90%,
    rgba(219, 233, 255, 0) 100%
  );
}

.keystone-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.24;
  background: rgba(232, 246, 255, 0.72);
  box-shadow:
    0 0 0 3px rgba(127, 200, 255, 0.08),
    0 0 12px rgba(189, 230, 255, 0.3);
  transition: opacity 500ms linear;
}

.login-container {
  position: relative;
  z-index: 3;
}

.login-logo h1,
.login-logo p {
  text-shadow: 0 6px 24px rgba(8, 18, 36, 0.55);
}

.login-card {
  background: rgba(11, 27, 49, 0.74);
  border: 1px solid rgba(99, 141, 184, 0.35);
  backdrop-filter: blur(10px);
  box-shadow:
    0 20px 44px rgba(2, 8, 16, 0.5),
    inset 0 1px 0 rgba(204, 229, 255, 0.08);
}

.version-text {
  color: rgba(171, 193, 217, 0.88);
}

@media (max-width: 768px) {
  .keystone-lines {
    width: 98vw;
  }

  .login-card {
    backdrop-filter: blur(8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .keystone-dot {
    top: 50%;
    opacity: 0.22;
    transition: none !important;
  }
}