.changelog-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2100;
  padding: 24px;
  display: grid;
  place-items: center;
  overflow-y: auto;
  background: rgb(6 14 11 / 76%);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 220ms ease;
}

.changelog-backdrop[hidden] {
  display: none;
}

.changelog-backdrop.is-visible {
  opacity: 1;
}

.changelog-dialog {
  --changelog-panel: var(--theme-sidebar, #173d2a);
  --changelog-panel-soft: var(--theme-sidebar-surface, #214b35);
  --changelog-border: var(--theme-sidebar-border, #28583e);
  --changelog-text: var(--theme-sidebar-text, #f4faf6);
  --changelog-muted: var(--theme-sidebar-muted, #bfd0c4);
  --changelog-highlight: var(--theme-sidebar-link, #a9ddb5);

  position: relative;
  width: min(100%, 620px);
  max-height: min(760px, calc(100dvh - 48px));
  overflow-x: hidden;
  overflow-y: auto;
  border: 1px solid var(--changelog-border);
  border-radius: 14px;
  color: var(--changelog-text);
  background:
    linear-gradient(145deg, rgb(255 255 255 / 4%), transparent 36%),
    var(--changelog-panel);
  box-shadow:
    0 30px 90px rgb(0 0 0 / 42%),
    inset 0 0 0 1px rgb(255 255 255 / 6%);
  transform: translateY(30px) scale(0.975);
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.changelog-dialog::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  content: "";
  pointer-events: none;
  opacity: 0.55;
  background-image:
    linear-gradient(rgb(255 255 255 / 2.5%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 2.5%) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, #000, transparent 72%);
}

.changelog-dialog > * {
  position: relative;
  z-index: 1;
}

.changelog-backdrop.is-visible .changelog-dialog {
  transform: translateY(0) scale(1);
}

.changelog-titlebar {
  min-height: 86px;
  padding: 20px 22px 18px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--changelog-border);
  background: rgb(0 0 0 / 13%);
}

.changelog-kicker {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--changelog-highlight);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.changelog-titlebar h2 {
  margin: 6px 0 0;
  color: var(--changelog-text);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: clamp(1.2rem, 4vw, 1.55rem);
  line-height: 1.2;
}

.changelog-titlebar h2 strong {
  color: var(--theme-accent, #78b83c);
  font-weight: 800;
}

.changelog-intro {
  padding: 16px 22px 4px;
}

.changelog-intro p {
  margin: 0;
  color: var(--changelog-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.changelog-content {
  padding: 12px 22px 22px;
  display: grid;
  gap: 20px;
}

.changelog-group {
  --changelog-group-color: var(--theme-primary-bright, #3b9140);

  padding: 14px 16px;
  border: 1px solid var(--changelog-border);
  border-left: 3px solid var(--changelog-group-color);
  border-radius: 8px;
  background: rgb(0 0 0 / 12%);
}

.changelog-group--improved {
  --changelog-group-color: var(--theme-accent, #78b83c);
}

.changelog-group > header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.changelog-group > header h3 {
  margin: 0;
  color: var(--changelog-group-color);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.changelog-group > header span {
  height: 1px;
  flex: 1;
  background: var(--changelog-border);
}

.changelog-group ul {
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  list-style: none;
}

.changelog-group li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 8px;
  color: var(--changelog-text);
  font-size: 0.88rem;
  line-height: 1.45;
}

.changelog-group li strong {
  color: var(--changelog-group-color);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 1rem;
  line-height: 1.25;
  text-align: center;
}

.changelog-actions {
  padding: 16px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--changelog-border);
  background: rgb(0 0 0 / 13%);
}

.changelog-release {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--changelog-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.changelog-release__version strong {
  color: var(--changelog-highlight);
}

.changelog-release__stage {
  padding: 3px 7px;
  display: inline-flex;
  align-items: center;
  border: 1px solid color-mix(in srgb, var(--changelog-highlight) 62%, transparent);
  border-radius: 999px;
  color: var(--changelog-highlight);
  background: color-mix(in srgb, var(--changelog-highlight) 10%, transparent);
  font-size: 0.54rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  text-transform: uppercase;
}

.changelog-confirm {
  min-height: 42px;
  padding: 0 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid var(--theme-accent-strong, #579126);
  border-radius: 8px;
  color: var(--theme-on-accent, #142018);
  background: var(--theme-accent, #78b83c);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 20%);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  transition: filter 150ms ease, transform 150ms ease;
}

.changelog-confirm:hover {
  filter: brightness(1.07);
  transform: translateY(-1px);
}

.changelog-confirm:active {
  transform: translateY(0);
}

.changelog-backdrop.is-visible .changelog-group {
  animation: changelog-group-enter 360ms both;
}

.changelog-backdrop.is-visible .changelog-group:nth-child(2) {
  animation-delay: 80ms;
}

body.changelog-open {
  overflow: hidden;
}

@keyframes changelog-group-enter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 560px) {
  .changelog-backdrop {
    padding: 10px;
    place-items: end center;
  }

  .changelog-dialog {
    max-height: calc(100dvh - 20px);
    border-radius: 14px 14px 10px 10px;
    transform: translateY(46px);
  }

  .changelog-titlebar {
    min-height: 78px;
    padding: 17px 17px 15px;
  }

  .changelog-intro {
    padding: 14px 17px 2px;
  }

  .changelog-content {
    padding: 10px 17px 18px;
    gap: 14px;
  }

  .changelog-group {
    padding: 12px 13px;
  }

  .changelog-actions {
    padding: 14px 17px;
    flex-direction: column-reverse;
    align-items: stretch;
  }

  .changelog-release {
    justify-content: center;
    text-align: center;
  }

  .changelog-confirm {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .changelog-backdrop,
  .changelog-dialog,
  .changelog-confirm {
    transition: none;
  }

  .changelog-backdrop.is-visible .changelog-group {
    animation: none;
  }
}