:root {
  --bg: #0c1722;
  --panel: #101f2d;
  --surface: #142636;
  --surface-2: #162b3d;
  --line: #263a4d;
  --line-2: #2e465d;
  --text: #e6edf3;
  --muted: #9aafc0;
  --accent: #7da9d6;
  --scroll-track: #182736;
  --scroll-thumb: #3a556f;
  --topbar-bg: #122435;
  --focus: 0 0 0 2px rgba(125, 169, 214, 0.45);
}

:root[data-theme="light"] {
  --bg: #edf3f8;
  --panel: #f8fbff;
  --surface: #f1f7fd;
  --surface-2: #eaf2fa;
  --line: #c4d3e1;
  --line-2: #adc1d4;
  --text: #162433;
  --muted: #4d6276;
  --accent: #4f7daa;
  --scroll-track: #d7e3ef;
  --scroll-thumb: #95acc1;
  --topbar-bg: #ebf3fb;
}

* {
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) var(--scroll-track);
}

*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track {
  background: var(--scroll-track);
}

*::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border: 2px solid var(--scroll-track);
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

.page-shell {
  width: min(900px, calc(100vw - 24px));
  margin: 24px auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}

.page-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--topbar-bg);
  margin-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
}

.brand img {
  /* CLS: keep stable logo box while SVG decodes. */
  width: 131px;
  height: 28px;
}

.top-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.top-link {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.top-link.is-active,
.top-link:hover,
.top-link:focus-visible {
  color: var(--text);
}

.hero {
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
}

.hero p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.hero-meta {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.meta-item,
.footer-version,
.release-count {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.meta-item:first-child,
.footer-version {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.field-group {
  min-width: 190px;
  display: grid;
  gap: 6px;
}

.field {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.field-select {
  position: relative;
}

.field-select-trigger {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  padding: 8px 11px;
  padding-right: 32px;
  font: inherit;
  cursor: pointer;
  text-align: left;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.field-select-icon {
  position: absolute;
  right: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 12px;
  pointer-events: none;
}

.field-select-trigger:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.field-select-trigger[aria-expanded="true"] .field-select-icon {
  transform: translateY(-50%) rotate(180deg);
}

.field-select-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  background: var(--surface-2);
  padding: 6px;
  display: grid;
  gap: 4px;
}

.field-select-menu[hidden] {
  display: none;
}

.field-select-option {
  width: 100%;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  font: inherit;
  text-align: left;
  padding: 8px 10px;
  cursor: pointer;
}

.field-select-option:hover {
  background: rgba(255, 255, 255, 0.05);
}

.field-select-option[aria-selected="true"] {
  color: var(--accent);
  background: rgba(125, 169, 214, 0.14);
}

.field-select-option:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.content {
  display: grid;
  gap: 10px;
  /* CLS: reserve release-list space before async JSON render. */
  min-height: 220px;
}

.state-message {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.state-message.is-error {
  color: #e9a1a1;
}

.release-list {
  display: grid;
  gap: 10px;
}

.release-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  overflow: clip;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.release-card[open] {
  border-color: var(--line-2);
  background: var(--surface-2);
}

.release-summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
  display: grid;
  gap: 8px;
}

.release-summary::-webkit-details-marker {
  display: none;
}

.release-summary:hover {
  background: rgba(255, 255, 255, 0.03);
}

.release-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.release-version {
  margin: 0;
  font-size: 14px;
  line-height: 1;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: var(--accent);
}

.release-date {
  color: var(--muted);
  font-size: 12px;
}

.release-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.release-title {
  margin: 0;
  font-size: 14px;
  color: var(--text);
  overflow-wrap: anywhere;
}

.release-chevron {
  color: var(--muted);
  font-size: 15px;
  transition: transform 0.16s ease;
  transform: rotate(0deg);
}

.release-card[open] .release-chevron {
  transform: rotate(90deg);
}

.release-body {
  padding: 12px 14px 14px;
  border-top: 1px solid var(--line);
}

.release-card[open] .release-body {
  animation: reveal-release 0.18s ease;
}

.release-body-heading {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
}

.release-update-groups {
  display: grid;
  gap: 12px;
}

.release-update-group {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-2);
  padding: 10px;
}

.release-update-head {
  display: grid;
  gap: 2px;
  margin-bottom: 8px;
}

.release-update-version {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.release-update-category {
  margin: 0;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}

.release-changes {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.release-changes li {
  color: var(--text);
  font-size: 14px;
  overflow-wrap: anywhere;
}

.legal-footer {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
}

@keyframes reveal-release {
  from {
    opacity: 0;
    transform: translateY(-3px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .release-card,
  .release-chevron,
  .release-body {
    transition: none;
    animation: none;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: calc(100vw - 14px);
    margin: 8px auto;
    padding: 10px;
  }

  .page-topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .top-links {
    gap: 10px;
  }

  .toolbar {
    align-items: stretch;
  }

  .field-group {
    width: 100%;
  }

  .release-title-row {
    align-items: center;
  }

  .legal-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}