:root {
  --font-heading: "Sora", "IBM Plex Sans", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-dyslexic: "OpenDyslexic", "Atkinson Hyperlegible", "IBM Plex Sans", sans-serif;

  --bg: #f4f1e8;
  --bg-soft: #fdfaf4;
  --bg-strong: #ece6d8;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --ink: #152239;
  --ink-muted: #46516a;
  --line: rgba(18, 34, 57, 0.15);
  --accent: #d45131;
  --accent-strong: #b93f21;
  --accent-soft: rgba(212, 81, 49, 0.12);
  --ok: #0d7d6f;
  --danger: #9f2e27;
  --shadow: 0 20px 42px rgba(20, 33, 57, 0.1);

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --font-size-base: 17px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

html {
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: radial-gradient(circle at 10% -5%, #f8dfc8 0%, transparent 38%),
    radial-gradient(circle at 100% 0%, #dae9f9 0%, transparent 30%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-strong) 100%);
  line-height: 1.5;
}

@keyframes viewIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

body.theme-dark {
  --bg: #0d1522;
  --bg-soft: #121f30;
  --bg-strong: #0a121f;
  --surface: rgba(16, 28, 45, 0.86);
  --surface-strong: #1a2a40;
  --ink: #eaf0ff;
  --ink-muted: #a9b7d0;
  --line: rgba(202, 220, 255, 0.2);
  --accent: #f47f58;
  --accent-strong: #ff9d7c;
  --accent-soft: rgba(244, 127, 88, 0.2);
  --shadow: 0 16px 34px rgba(2, 9, 18, 0.38);
}

body.dyslexic-mode {
  font-family: var(--font-dyslexic);
}

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

.skip-link {
  position: fixed;
  top: 0.6rem;
  left: 0.6rem;
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  transform: translateY(-150%);
  z-index: 999;
}

.skip-link:focus {
  transform: translateY(0);
}

.aurora {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 14%, rgba(212, 81, 49, 0.18), transparent 44%),
    radial-gradient(circle at 84% 8%, rgba(11, 125, 111, 0.2), transparent 39%),
    radial-gradient(circle at 70% 84%, rgba(45, 95, 185, 0.13), transparent 45%);
}

.app-shell {
  width: min(1320px, calc(100% - 1.1rem));
  margin: 0.7rem auto 2rem;
  position: relative;
  z-index: 1;
}

.site-header,
.search-hub,
.surface-card,
.site-footer {
  backdrop-filter: blur(12px);
}

.site-header {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.68rem;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.8rem;
  display: grid;
  place-items: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: #fff;
  background: linear-gradient(140deg, var(--accent), var(--accent-strong));
}

.brand-name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
}

.brand-sub {
  margin: 0.06rem 0 0;
  color: var(--ink-muted);
  font-size: 0.8rem;
}

.main-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.35rem;
}

.nav-btn {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--ink);
  border-radius: 0.72rem;
  padding: 0.5rem 0.35rem;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
}

.nav-btn.active {
  background: var(--accent-soft);
  border-color: rgba(212, 81, 49, 0.42);
  color: var(--accent-strong);
}

.header-actions {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.ghost-link {
  font-size: 0.82rem;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.36rem 0.68rem;
  color: var(--ink-muted);
  background: var(--bg-soft);
}

.search-hub {
  margin-top: 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 0.85rem;
  background: var(--surface);
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 0.42rem;
  align-items: center;
}

.search-row input,
select,
.inline-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.58rem 0.62rem;
  font-size: 0.92rem;
  background: var(--surface-strong);
  color: var(--ink);
}

.search-row input:focus,
select:focus,
button:focus,
.inline-form input:focus {
  outline: 3px solid rgba(212, 81, 49, 0.25);
  outline-offset: 1px;
}

.search-btn,
.ghost-btn {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.56rem 0.66rem;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--surface-strong);
  color: var(--ink);
  cursor: pointer;
}

.search-btn.primary {
  background: linear-gradient(140deg, var(--accent), var(--accent-strong));
  color: #fff;
  border-color: rgba(185, 63, 33, 0.7);
}

.search-meta-row {
  margin-top: 0.45rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
}

.search-meta,
.search-shortcuts,
.subtle {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

kbd {
  padding: 0.08rem 0.28rem;
  border: 1px solid var(--line);
  border-radius: 0.32rem;
  background: var(--surface-strong);
}

.suggestions {
  margin-top: 0.45rem;
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  max-height: 320px;
  overflow: auto;
}

.suggestions.open {
  display: block;
}

.suggestion-item {
  border-bottom: 1px solid var(--line);
  padding: 0.58rem 0.68rem;
  cursor: pointer;
}

.suggestion-item:last-child {
  border-bottom: 0;
}

.suggestion-item[aria-selected="true"],
.suggestion-item:hover {
  background: var(--accent-soft);
}

.views {
  margin-top: 0.85rem;
}

.view {
  display: block;
}

.view[hidden] {
  display: none;
}

.view.view-enter {
  animation: viewIn 220ms ease both;
}

.view > h1 {
  margin: 0 0 0.64rem;
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
}

.card-grid {
  display: grid;
  gap: 0.7rem;
}

.home-grid,
.two-col {
  grid-template-columns: 1fr;
}

.surface-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 0.78rem;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.surface-card h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1rem;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.58rem;
}

.inline-actions {
  display: flex;
  gap: 0.35rem;
}

.stack {
  display: grid;
  gap: 0.45rem;
}

.empty-block {
  color: var(--ink-muted);
  padding: 0.4rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
}

.mini-row {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.52rem 0.56rem;
  background: var(--surface-strong);
  display: grid;
  gap: 0.24rem;
}

.mini-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.mini-title {
  margin: 0;
  font-weight: 700;
  font-size: 0.92rem;
}

.mini-sub {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

.topic-chip,
.tag-chip {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.28rem 0.6rem;
  font-size: 0.77rem;
  cursor: pointer;
}

.results-layout {
  display: grid;
  gap: 0.7rem;
}

.filter-panel {
  display: grid;
  gap: 0.58rem;
  align-content: start;
}

.filter-panel label {
  display: grid;
  gap: 0.24rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.did-you-mean {
  margin: 0 0 0.52rem;
  padding: 0.56rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.84rem;
}

.result-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.62rem;
  background: var(--surface-strong);
  cursor: pointer;
  display: grid;
  gap: 0.3rem;
}

.result-item:hover,
.result-item:focus {
  border-color: rgba(212, 81, 49, 0.52);
  background: var(--accent-soft);
}

.result-item:focus-visible {
  outline: 3px solid rgba(212, 81, 49, 0.32);
  outline-offset: 1px;
}

.result-meta {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

.entry-shell.empty {
  color: var(--ink-muted);
}

.entry-head {
  position: sticky;
  top: 0.35rem;
  z-index: 3;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.65rem;
  display: grid;
  gap: 0.5rem;
}

.entry-lemma-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.7rem;
}

.entry-lemma h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2.2vw, 1.66rem);
}

.entry-lemma p {
  margin: 0.1rem 0 0;
  color: var(--ink-muted);
}

.entry-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.entry-action-row .search-btn[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: rgba(212, 81, 49, 0.45);
  color: var(--accent-strong);
}

.entry-layout {
  margin-top: 0.7rem;
  display: grid;
  gap: 0.7rem;
}

.entry-main,
.entry-rail {
  display: grid;
  gap: 0.6rem;
}

.entry-tabs {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.entry-tab {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.3rem 0.64rem;
  font-size: 0.78rem;
  cursor: pointer;
}

.entry-tab.active {
  background: var(--accent-soft);
  border-color: rgba(212, 81, 49, 0.45);
  color: var(--accent-strong);
}

.entry-section {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.62rem;
  background: var(--surface-strong);
  display: grid;
  gap: 0.5rem;
}

.entry-section h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 0.98rem;
}

.definition-card,
.example-card,
.relationship-row,
.rail-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  padding: 0.48rem;
}

.definition-card p,
.example-card p,
.relationship-row p,
.rail-card p,
.rail-card ul {
  margin: 0;
}

.entry-section ul,
.rail-card ul {
  margin: 0;
  padding-inline-start: 1rem;
}

details summary {
  cursor: pointer;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

.definition-domain {
  font-size: 0.74rem;
  color: var(--ink-muted);
}

.highlight {
  background: rgba(244, 190, 64, 0.3);
  border-radius: 0.2rem;
  padding: 0 0.1rem;
}

.synonym-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  padding: 0.18rem 0.54rem;
  font-size: 0.75rem;
  cursor: pointer;
}

.inline-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem;
  margin-bottom: 0.55rem;
}

.flashcard {
  min-height: 140px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--bg-soft), var(--surface-strong));
  padding: 0.68rem;
  display: grid;
  align-content: center;
  gap: 0.45rem;
}

.rating-row {
  margin-top: 0.55rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.3rem;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.5rem;
}

.metric {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  background: var(--bg-soft);
}

.metric-label {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.metric-value {
  margin: 0.2rem 0 0;
  font-size: 1rem;
  font-weight: 700;
}

.settings-stack {
  display: grid;
  gap: 0.58rem;
}

.toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  padding: 0.44rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.mobile-entry-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 25;
  padding: 0.55rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.44rem;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  border-top: 1px solid var(--line);
}

.site-footer {
  margin-top: 0.8rem;
  padding: 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.site-footer p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.78rem;
}

.site-footer p + p {
  margin-top: 0.26rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  transform: translateX(-50%) translateY(130%);
  background: var(--ink);
  color: #fff;
  border-radius: 999px;
  padding: 0.5rem 0.85rem;
  font-size: 0.8rem;
  transition: transform 220ms ease;
  z-index: 120;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.skeleton-line {
  height: 0.72rem;
  border-radius: 0.4rem;
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--surface-strong) 72%, var(--bg-soft) 28%) 25%,
    color-mix(in srgb, var(--surface-strong) 56%, var(--bg-soft) 44%) 37%,
    color-mix(in srgb, var(--surface-strong) 72%, var(--bg-soft) 28%) 63%
  );
  background-size: 240% 100%;
  animation: shimmer 1.2s linear infinite;
}

.skeleton-lg {
  width: 72%;
  height: 1rem;
}

.skeleton-md {
  width: 54%;
}

.skeleton-sm {
  width: 34%;
}

@media (min-width: 840px) {
  .site-header {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .main-nav {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .home-grid,
  .two-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .span-2 {
    grid-column: span 2;
  }

  .results-layout {
    grid-template-columns: minmax(220px, 270px) 1fr;
  }

  .entry-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .mobile-entry-bar {
    display: none;
  }
}

@media (max-width: 560px) {
  .search-row {
    grid-template-columns: 1fr 1fr;
  }

  .search-row input {
    grid-column: span 2;
  }

  .search-btn.primary {
    grid-column: span 2;
  }
}