:root {
  color-scheme: light dark;
  --title-font: "Schibsted Grotesk", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --header-font: "Schibsted Grotesk", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --body-font: "Source Sans Pro", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --code-font: "IBM Plex Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  --bg: #f7f8f8;
  --panel: #ffffff;
  --field: #fbfcfc;
  --header-bg: rgba(255, 255, 255, 0.82);
  --tag-bg: #eef7f4;
  --ink: #1f2933;
  --muted: #65717d;
  --line: #d8dee2;
  --accent: #0f766e;
  --accent-strong: #0b4f6c;
  --warn: #9a3412;
  --shadow: 0 14px 36px rgba(31, 41, 51, 0.08);
}

:root[data-theme="dark"] {
  --bg: #101417;
  --panel: #171d21;
  --field: #11181c;
  --header-bg: rgba(16, 20, 23, 0.88);
  --tag-bg: #102521;
  --ink: #ecf2f0;
  --muted: #a8b3b0;
  --line: #2d383d;
  --accent: #58d5c7;
  --accent-strong: #7dd3fc;
  --warn: #f7b267;
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.icon {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body-font);
  line-height: 1.55;
}

a { color: var(--accent-strong); text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: var(--header-bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
}

.site-title {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--ink);
  font-family: var(--title-font);
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
}

.site-title-icon {
  color: var(--accent-strong);
}

.header-search {
  position: relative;
  flex: 1 1 28rem;
  max-width: 42rem;
}

.header-search-icon {
  position: absolute;
  left: 0.72rem;
  top: 50%;
  color: var(--muted);
  transform: translateY(-50%);
  pointer-events: none;
}

.header-search input {
  min-height: 2.35rem;
  padding-left: 2.1rem;
  padding-right: 2.25rem;
}

.header-search-results {
  position: absolute;
  top: calc(100% + 0.45rem);
  left: 0;
  right: 0;
  z-index: 30;
  max-height: min(28rem, calc(100vh - 7rem));
  overflow-y: auto;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.header-search-result {
  display: grid;
  gap: 0.2rem;
  padding: 0.7rem 0.8rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.header-search-result:last-child {
  border-bottom: 0;
}

.header-search-result:hover,
.header-search-result.active {
  background: var(--tag-bg);
}

.search-result-kind {
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 780;
  text-transform: uppercase;
}

.search-result-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 740;
}

.search-result-meta {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
  font-size: 0.82rem;
}

.header-search-empty {
  padding: 0.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav {
  display: flex;
  gap: 0.25rem;
  font-size: 0.95rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 2.25rem;
  padding: 0.3rem 0.55rem;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
}

.site-nav a:hover {
  color: var(--accent-strong);
  background: var(--tag-bg);
  border-color: var(--line);
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  min-height: 2.25rem;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

.icon-button:hover {
  color: var(--accent-strong);
  background: var(--tag-bg);
}

.theme-icon-moon {
  display: none;
}

:root[data-theme="dark"] .theme-icon-sun {
  display: none;
}

:root[data-theme="dark"] .theme-icon-moon {
  display: block;
}

.site-layout {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: start;
}

.tag-sidebar {
  position: sticky;
  top: 4.75rem;
  max-height: calc(100vh - 5rem);
  overflow-y: auto;
  scrollbar-gutter: stable;
  margin-top: 1rem;
  padding: 1rem 0.85rem 1.5rem 0;
  border-right: 1px solid var(--line);
  background: transparent;
}

.tag-sidebar-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 2.4rem;
  padding: 0 0.45rem 0.7rem;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--header-font);
  font-size: 0.82rem;
  font-weight: 760;
}

.sidebar-title,
.sidebar-all-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.tag-sidebar-heading a {
  min-height: 1.85rem;
  padding: 0.2rem 0.4rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  border: 1px solid transparent;
}

.tag-sidebar-heading a:hover,
.tag-sidebar-heading a.active {
  color: var(--accent-strong);
  background: var(--tag-bg);
  border-color: var(--line);
}

.tag-sidebar-list {
  display: grid;
  gap: 0.18rem;
  padding-top: 0.75rem;
}

.tag-sidebar-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.55rem;
  min-height: 2rem;
  padding: 0.32rem 0.45rem;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid transparent;
}

.tag-row-icon {
  width: 0.88rem;
  height: 0.88rem;
  color: var(--muted);
}

.tag-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tag-count {
  min-width: 1.35rem;
  padding: 0.04rem 0.35rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.74rem;
  text-align: center;
}

.tag-sidebar-list a:hover,
.tag-sidebar-list a.active {
  background: var(--tag-bg);
  border-color: var(--line);
  color: var(--accent-strong);
}

.tag-sidebar-list a:hover .tag-row-icon,
.tag-sidebar-list a.active .tag-row-icon {
  color: var(--accent);
}

main {
  min-width: 0;
  padding: 2rem 0 4rem;
}

.hero, .page-heading {
  padding: clamp(2rem, 5vw, 4rem) 0 1.5rem;
}

.hero h1, .page-heading h1 {
  margin: 0.15rem 0 0.5rem;
  font-family: var(--header-font);
  font-size: clamp(2.1rem, 7vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero p, .page-heading p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.tag-page-heading {
  display: flex;
  justify-content: space-between;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: flex-end;
  flex-wrap: wrap;
}

.tag-heading-main {
  flex: 1 1 24rem;
  min-width: min(100%, 18rem);
}

.tag-page-heading h1 {
  overflow-wrap: anywhere;
}

.tag-page-filter {
  display: grid;
  flex: 0 1 24rem;
  gap: 0.42rem;
  max-width: 26rem;
  margin-bottom: 0.4rem;
  margin-left: auto;
}

.tag-page-filter label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.tag-page-search-field {
  position: relative;
}

.tag-page-search-field input {
  padding-left: 2.1rem;
}

.tag-page-search-icon {
  position: absolute;
  left: 0.72rem;
  top: 50%;
  color: var(--muted);
  transform: translateY(-50%);
  pointer-events: none;
}

.tag-page-filter .result-count {
  justify-self: end;
  padding-bottom: 0;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.catalog-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 18rem) auto;
  align-items: end;
  gap: 0.9rem;
  padding: 1rem;
  margin-bottom: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.catalog-tools label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

input, select {
  min-height: 2.6rem;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--field);
  color: var(--ink);
  padding: 0.55rem 0.75rem;
  font: inherit;
}

input:focus, select:focus {
  outline: 2px solid rgba(15, 118, 110, 0.28);
  border-color: var(--accent);
}

.result-count {
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
  padding-bottom: 0.6rem;
}

.paper-list {
  display: grid;
  gap: 0.75rem;
}

.paper-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
}

.paper-row.is-filtered-out {
  display: none !important;
}

.paper-row h2 {
  margin: 0;
  font-family: var(--header-font);
  font-size: 1.08rem;
  line-height: 1.28;
  letter-spacing: 0;
}

.paper-row p {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.paper-year {
  color: var(--warn);
  font-size: 0.8rem;
  font-weight: 750;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line);
  color: var(--accent-strong);
  background: var(--tag-bg);
  font-size: 0.78rem;
  text-decoration: none;
}

.tag-index {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.65rem;
}

.tag-index li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0.9rem;
  background: var(--panel);
  border: 1px solid var(--line);
}

.paper-page {
  max-width: 860px;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1rem 0 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 2.4rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line);
  color: var(--accent-strong);
  background: var(--panel);
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: var(--accent-strong);
  color: white;
  border-color: var(--accent-strong);
}

.facts {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.45rem 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.facts dt {
  color: var(--muted);
  font-weight: 750;
}

.facts dd {
  margin: 0;
}

.paper-section {
  margin-top: 1.5rem;
}

.paper-section h2 {
  font-family: var(--header-font);
  font-size: 1.05rem;
  letter-spacing: 0;
}

code, pre, kbd, samp {
  font-family: var(--code-font);
}

.muted, .site-footer {
  color: var(--muted);
}

.site-footer {
  width: min(1500px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
}

@media (max-width: 960px) {
  .site-header {
    flex-wrap: wrap;
  }

  .header-search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
  }

  .site-layout {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .tag-sidebar {
    position: static;
    max-height: 15rem;
    margin-top: 1rem;
    padding: 0.85rem;
    border: 1px solid var(--line);
    background: var(--panel);
  }

  main {
    padding-top: 0;
  }
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-controls {
    width: 100%;
    justify-content: space-between;
  }

  .catalog-tools {
    grid-template-columns: 1fr;
  }

  .tag-page-heading {
    align-items: start;
  }

  .tag-page-filter {
    width: 100%;
    max-width: none;
    margin-bottom: 0;
  }

  .tag-page-filter .result-count {
    justify-self: start;
  }

  .result-count {
    padding-bottom: 0;
  }

  .facts {
    grid-template-columns: 1fr;
  }
}