.boot-page {
  box-sizing: border-box;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding:
    max(1rem, env(safe-area-inset-top, 0px))
    max(1rem, env(safe-area-inset-right, 0px))
    max(1rem, env(safe-area-inset-bottom, 0px))
    max(1rem, env(safe-area-inset-left, 0px));
}

.boot-shell {
  box-sizing: border-box;
  width: min(32rem, 100%);
  margin: 0;
  padding: clamp(1.25rem, 3vw, 1.5rem);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--ink, #24313d);
  background: var(--surface, #fff);
  border: 1px solid var(--border, #d7dde7);
  border-radius: 1rem;
  box-shadow: var(--shadow, 0 14px 36px rgb(24 33 47 / 12%));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.boot-shell-error {
  border-color: color-mix(in srgb, var(--coral, #d9573d) 36%, var(--border, #d7dde7));
}

.boot-shell-mark {
  width: 4.5rem;
  height: 4.5rem;
  flex: 0 0 auto;
  border-radius: 1rem;
}

.boot-shell h1,
.boot-shell p {
  margin: 0;
}

.boot-shell h1 {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
}

.boot-shell p {
  margin-top: 0.4rem;
  line-height: 1.5;
  opacity: 0.72;
}

.boot-shell-progress {
  width: 2.8rem;
  height: 0.25rem;
  margin-top: 1rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--ink, #24313d) 12%, transparent);
  border-radius: 999px;
}

.boot-shell-progress::after {
  content: "";
  display: block;
  width: 45%;
  height: 100%;
  background: var(--green, #2f8f67);
  border-radius: inherit;
  animation: boot-shell-progress 1.1s ease-in-out infinite alternate;
}

.boot-shell-retry {
  min-height: 2.6rem;
  margin-top: 1rem;
  padding: 0.6rem 1rem;
  color: #fff;
  background: #237653;
  border: 0;
  border-radius: 0.65rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

:root[data-theme="dark"] .boot-shell {
  color: var(--ink, #f4f7fb);
  background: var(--surface, #141a23);
  border-color: var(--border, #35404d);
  box-shadow: var(--shadow, 0 18px 44px rgb(0 0 0 / 42%));
}

:root[data-theme="dark"] .boot-shell-error {
  border-color: color-mix(in srgb, var(--coral, #ff9a84) 36%, var(--border, #35404d));
}

@keyframes boot-shell-progress {
  from { transform: translateX(-10%); }
  to { transform: translateX(130%); }
}

@media (prefers-reduced-motion: reduce) {
  .boot-shell-progress::after { animation: none; width: 100%; }
}

@media (max-width: 480px) {
  .boot-shell-mark { width: 3.5rem; height: 3.5rem; }
}