:root {
  --boot-color-primary: #3b82f6;
  --boot-color-primary-dark: #2563eb;
  --boot-color-accent: #60a5fa;
  --boot-color-background: #f8fafc;
  --boot-color-surface: #ffffff;
  --boot-color-surface-raised: #f1f5f9;
  --boot-color-border: #e2e8f0;
  --boot-color-text-primary: #0f172a;
  --boot-color-text-secondary: #475569;
  --boot-color-text-muted: #94a3b8;
  --boot-color-success: #10b981;
  --boot-color-warning: #f59e0b;
  --boot-color-error: #ef4444;
  --boot-color-primary-rgb: 59, 130, 246;
  --boot-color-accent-rgb: 96, 165, 250;
  --boot-color-background-rgb: 248, 250, 252;
  --boot-color-surface-rgb: 255, 255, 255;
  --boot-color-text-primary-rgb: 15, 23, 42;
  --boot-panel-shadow:
    0 28px 70px rgba(15, 23, 42, 0.16),
    0 10px 26px rgba(59, 130, 246, 0.14);
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(var(--boot-color-accent-rgb), 0.18), transparent 38%),
    linear-gradient(
      155deg,
      rgba(var(--boot-color-background-rgb), 1) 0%,
      rgba(var(--boot-color-surface-rgb), 1) 52%,
      rgba(var(--boot-color-primary-rgb), 0.08) 100%
    );
  color: var(--boot-color-text-primary);
  font-family:
    "Segoe UI",
    "Inter",
    "Helvetica Neue",
    Arial,
    sans-serif;
}

body {
  overflow: hidden;
}

.boot-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: 32px 20px;
  overflow: hidden;
  background:
    radial-gradient(circle at top, rgba(var(--boot-color-accent-rgb), 0.14), transparent 42%),
    linear-gradient(
      155deg,
      rgba(var(--boot-color-background-rgb), 1) 0%,
      rgba(var(--boot-color-surface-rgb), 0.98) 48%,
      rgba(var(--boot-color-primary-rgb), 0.08) 100%
    );
  transition:
    opacity 240ms ease,
    visibility 240ms ease;
}

.boot-loader--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.boot-loader__grid,
.boot-loader__halo {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.boot-loader__grid {
  background-image:
    linear-gradient(rgba(var(--boot-color-text-primary-rgb), 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--boot-color-text-primary-rgb), 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
  opacity: 0.55;
}

.boot-loader__halo {
  background:
    radial-gradient(circle at center, rgba(var(--boot-color-primary-rgb), 0.18), transparent 38%),
    radial-gradient(circle at 22% 20%, rgba(var(--boot-color-accent-rgb), 0.12), transparent 26%),
    radial-gradient(circle at 78% 76%, rgba(var(--boot-color-primary-rgb), 0.1), transparent 24%);
  filter: blur(18px);
}

.boot-loader__panel {
  position: relative;
  width: min(100%, 620px);
  padding: 30px 28px 26px;
  border: 1px solid rgba(var(--boot-color-primary-rgb), 0.14);
  border-radius: 28px;
  background:
    linear-gradient(
      180deg,
      rgba(var(--boot-color-surface-rgb), 0.96) 0%,
      rgba(var(--boot-color-surface-rgb), 0.88) 100%
    );
  box-shadow: var(--boot-panel-shadow);
  backdrop-filter: blur(16px);
}

.boot-loader__panel::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 27px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  pointer-events: none;
}

.boot-loader__network {
  position: relative;
  width: min(100%, 360px);
  height: 146px;
  margin: 0 auto 22px;
}

.boot-loader__node,
.boot-loader__connector {
  position: absolute;
}

.boot-loader__node {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: rgba(var(--boot-color-primary-rgb), 1);
  box-shadow:
    0 0 0 6px rgba(var(--boot-color-primary-rgb), 0.12),
    0 0 18px rgba(var(--boot-color-primary-rgb), 0.35);
  animation: boot-node-pulse 2.6s ease-in-out infinite;
}

.boot-loader__node--core {
  top: 58px;
  left: calc(50% - 7px);
  width: 22px;
  height: 22px;
  background: linear-gradient(
    135deg,
    rgba(var(--boot-color-accent-rgb), 1) 0%,
    rgba(var(--boot-color-primary-rgb), 1) 100%
  );
  box-shadow:
    0 0 0 10px rgba(var(--boot-color-primary-rgb), 0.12),
    0 0 28px rgba(var(--boot-color-primary-rgb), 0.32);
}

.boot-loader__node--north-west {
  top: 18px;
  left: 78px;
  animation-delay: 120ms;
}

.boot-loader__node--north-east {
  top: 22px;
  right: 82px;
  animation-delay: 240ms;
}

.boot-loader__node--south-west {
  bottom: 18px;
  left: 42px;
  animation-delay: 360ms;
}

.boot-loader__node--south-east {
  bottom: 22px;
  right: 36px;
  animation-delay: 480ms;
}

.boot-loader__connector {
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(var(--boot-color-primary-rgb), 0.08) 0%,
    rgba(var(--boot-color-primary-rgb), 0.88) 50%,
    rgba(var(--boot-color-accent-rgb), 0.12) 100%
  );
  transform-origin: left center;
  opacity: 0.85;
  overflow: hidden;
}

.boot-loader__connector::after {
  content: "";
  position: absolute;
  inset: -1px auto -1px -20%;
  width: 24%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.78) 50%,
    transparent 100%
  );
  animation: boot-scan 2.8s linear infinite;
}

.boot-loader__connector--north-west {
  top: 30px;
  left: 94px;
  width: 108px;
  transform: rotate(21deg);
}

.boot-loader__connector--north-east {
  top: 32px;
  left: 182px;
  width: 108px;
  transform: rotate(-20deg);
}

.boot-loader__connector--south-west {
  top: 86px;
  left: 60px;
  width: 144px;
  transform: rotate(-22deg);
}

.boot-loader__connector--south-east {
  top: 86px;
  left: 180px;
  width: 150px;
  transform: rotate(18deg);
}

.boot-loader__brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
  text-align: left;
}

.boot-loader__logo {
  width: auto;
  max-width: min(100%, 240px);
  height: 42px;
  object-fit: contain;
}

.boot-loader__brand-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.boot-loader__platform {
  color: var(--boot-color-text-primary);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.boot-loader__eyebrow {
  color: var(--boot-color-text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.boot-loader__stage {
  color: var(--boot-color-text-primary);
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  text-align: center;
}

.boot-loader__message {
  margin-top: 12px;
  color: var(--boot-color-text-secondary);
  font-size: 1rem;
  line-height: 1.55;
  text-align: center;
}

.boot-loader__progress {
  position: relative;
  margin-top: 20px;
  height: 8px;
  overflow: hidden;
  border: 1px solid rgba(var(--boot-color-primary-rgb), 0.12);
  border-radius: 999px;
  background: rgba(var(--boot-color-primary-rgb), 0.08);
}

.boot-loader__progress-fill {
  position: relative;
  width: 8%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    rgba(var(--boot-color-primary-rgb), 1) 0%,
    rgba(var(--boot-color-accent-rgb), 1) 100%
  );
  box-shadow: 0 0 18px rgba(var(--boot-color-primary-rgb), 0.32);
  transition: width 360ms ease;
}

.boot-loader__progress-fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.78) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  animation: boot-scan 1.9s linear infinite;
}

.boot-loader__hint {
  min-height: 22px;
  margin-top: 14px;
  color: var(--boot-color-text-muted);
  font-size: 0.92rem;
  line-height: 1.45;
  text-align: center;
}

.boot-loader__retry {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  margin-top: 18px;
  padding: 12px 16px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(
    135deg,
    rgba(var(--boot-color-primary-rgb), 1) 0%,
    rgba(var(--boot-color-accent-rgb), 1) 100%
  );
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  box-shadow: 0 18px 34px rgba(var(--boot-color-primary-rgb), 0.24);
  cursor: pointer;
}

.boot-loader__retry:hover {
  filter: brightness(1.03);
}

.boot-loader__retry[data-visible="true"] {
  display: inline-flex;
}

.boot-loader[data-state="slow"] .boot-loader__hint {
  color: var(--boot-color-warning);
}

.boot-loader[data-state="error"] .boot-loader__stage {
  color: var(--boot-color-error);
}

.boot-loader[data-state="error"] .boot-loader__message {
  color: var(--boot-color-text-primary);
}

.boot-loader[data-state="error"] .boot-loader__hint {
  color: var(--boot-color-text-secondary);
}

@keyframes boot-node-pulse {
  0%,
  100% {
    transform: scale(0.96);
    opacity: 0.82;
  }

  50% {
    transform: scale(1.16);
    opacity: 1;
  }
}

@keyframes boot-scan {
  0% {
    transform: translateX(-140%);
  }

  100% {
    transform: translateX(520%);
  }
}

@media (max-width: 640px) {
  .boot-loader {
    padding: 18px;
  }

  .boot-loader__panel {
    padding: 24px 18px 20px;
    border-radius: 22px;
  }

  .boot-loader__network {
    width: min(100%, 310px);
    height: 124px;
    margin-bottom: 18px;
  }

  .boot-loader__connector--north-west {
    top: 26px;
    left: 72px;
    width: 92px;
  }

  .boot-loader__connector--north-east {
    top: 28px;
    left: 152px;
    width: 94px;
  }

  .boot-loader__connector--south-west {
    top: 72px;
    left: 48px;
    width: 122px;
  }

  .boot-loader__connector--south-east {
    top: 72px;
    left: 150px;
    width: 126px;
  }

  .boot-loader__node--north-west {
    top: 14px;
    left: 58px;
  }

  .boot-loader__node--north-east {
    top: 18px;
    right: 62px;
  }

  .boot-loader__node--core {
    top: 48px;
  }

  .boot-loader__node--south-west {
    bottom: 12px;
    left: 26px;
  }

  .boot-loader__node--south-east {
    bottom: 18px;
    right: 18px;
  }

  .boot-loader__brand {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }

  .boot-loader__logo {
    max-width: min(100%, 210px);
  }

  .boot-loader__brand-copy {
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .boot-loader,
  .boot-loader__progress-fill,
  .boot-loader__node,
  .boot-loader__connector::after {
    animation: none !important;
    transition: none !important;
  }
}