/* ── Sidebar entry ── */
.sidebar__changelog {
  display: flex;
  align-items: center;
  gap: var(--nv-sp-2);
  padding: var(--nv-sp-3) var(--nv-sp-3);
  margin: 0 var(--nv-sp-2) var(--nv-sp-2);
  border-radius: var(--nv-r-sm);
  color: var(--nv-text-dim);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  transition: background var(--nv-ease), color var(--nv-ease);
  flex-shrink: 0;
}

.sidebar__changelog:hover {
  background: var(--nv-tint-accent-low);
  color: var(--moss);
}

.sidebar__changelog:focus-visible {
  outline: 2px solid var(--nv-accent-deep);
  outline-offset: 2px;
}

.sidebar__changelog.has-news::after {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--ochre);
  border-radius: 50%;
  margin-left: auto;
  animation: nv-news-pulse 1s ease 3;
}

/* ── Slide-over panel (covers the chat region, like the Why Layer covers the widget panel) ── */
.changelog-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  background: var(--nv-bg);
  transform: translateX(100%);
  transition: transform var(--nv-ease);
}

.changelog-overlay.is-open { transform: translateX(0); }
.changelog-overlay[hidden] { display: none; }

.changelog-overlay__head {
  min-height: 52px;
  padding: var(--nv-sp-3) var(--nv-sp-6);
  background: var(--nv-surface);
  border-bottom: 3px double var(--rule-strong);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--nv-sp-3);
  flex-shrink: 0;
}

.changelog-overlay__title {
  font-family: var(--nv-font-display);
  font-size: 18px;
  color: var(--nv-text);
}

.changelog-overlay__dismiss {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-sm);
  color: var(--nv-text-dim);
  font-size: 18px;
  line-height: 1;
  transition: border-color var(--nv-ease), color var(--nv-ease), box-shadow var(--nv-ease);
}

.changelog-overlay__dismiss:hover,
.changelog-overlay__dismiss:focus-visible {
  border-color: var(--moss);
  color: var(--moss);
  box-shadow: none;
  outline: none;
}

.changelog-overlay__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--nv-sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--nv-sp-5);
}

/* ── Loading / empty / error states ── */
.changelog-overlay__loading {
  display: grid;
  place-items: center;
  padding: var(--nv-sp-8) 0;
}

.changelog-overlay__empty,
.changelog-overlay__error {
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.65;
  color: var(--nv-text-dim);
}

.changelog-overlay__retry {
  width: fit-content;
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-sm);
  padding: var(--nv-sp-2) var(--nv-sp-3);
  color: var(--nv-text-dim);
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 600;
  transition: background var(--nv-ease), color var(--nv-ease), border-color var(--nv-ease);
}

/* ── Week card ── */
.changelog-week {
  max-width: 640px;
  background: transparent;
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-md);
  padding: var(--nv-sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--nv-sp-3);
}

.changelog-week__range {
  font-family: var(--nv-font-display);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.3;
  color: var(--nv-text);
}

.changelog-week__summary {
  font-size: 13px;
  line-height: 1.65;
  color: var(--nv-text-dim);
}

.changelog-week__entries {
  display: flex;
  flex-direction: column;
  margin-top: var(--nv-sp-1);
}

/* ── Entry rows ── */
.changelog-entry {
  padding: var(--nv-sp-3) 0;
  border-top: 1px solid var(--nv-divider);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--nv-sp-2);
}

.changelog-entry__kind {
  width: fit-content;
  padding: 2px var(--nv-sp-2);
  border-radius: var(--nv-r-sm);
  background: transparent;
  border: 1px solid var(--rule-strong);
  color: var(--ochre-ink);
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.changelog-entry__summary {
  font-size: 13px;
  line-height: 1.65;
  color: var(--nv-text);
}

.changelog-entry__detail {
  align-self: stretch;
  padding: var(--nv-sp-3);
  border-radius: var(--nv-r-sm);
  background: var(--nv-tint-paper);
  display: flex;
  flex-direction: column;
  gap: var(--nv-sp-1);
}

.changelog-entry__detail-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--nv-text);
}

.changelog-entry__detail-desc {
  font-size: 12px;
  line-height: 1.6;
  color: var(--nv-text-dim);
}

.changelog-entry__actions {
  display: flex;
  gap: var(--nv-sp-2);
}

.changelog-entry__button {
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-sm);
  padding: var(--nv-sp-2) var(--nv-sp-3);
  color: var(--nv-text-dim);
  font-family: var(--font-ui);
  font-size: 0.76rem;
  font-weight: 600;
  transition: background var(--nv-ease), color var(--nv-ease), border-color var(--nv-ease);
}

.changelog-entry__button--accent,
.changelog-entry__button:hover:not(:disabled),
.changelog-overlay__retry:hover {
  border-color: transparent;
  background: var(--moss);
  color: var(--paper);
}

.changelog-entry__button:disabled {
  opacity: 0.5;
  cursor: wait;
}

.changelog-entry__button:focus-visible,
.changelog-overlay__retry:focus-visible {
  outline: 2px solid var(--nv-accent-deep);
  outline-offset: 2px;
}

/* Resolved state — meaning carried by the glyph and text, not colour */
.changelog-entry__status {
  font-size: 12px;
  font-weight: 600;
  color: var(--nv-text-dim);
}

.changelog-entry__status::before {
  content: "\2713\00a0";
}

.changelog-entry.is-resolved .changelog-entry__status {
  animation: changelog-fade-in var(--nv-ease-slow) both;
}

.changelog-entry__note {
  font-size: 12px;
  color: var(--nv-text-dim);
}

/* Screen-reader-only live region */
.changelog-overlay__announcer {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@keyframes changelog-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes nv-news-pulse {
  from { opacity: 0.4; }
  to   { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .changelog-overlay,
  .changelog-overlay__dismiss,
  .changelog-overlay__retry,
  .changelog-entry__button,
  .sidebar__changelog {
    transition: none;
  }
  .changelog-entry.is-resolved .changelog-entry__status {
    animation: none;
  }
  .sidebar__changelog.has-news::after {
    animation: none;
  }
}