:root {
  color-scheme: light;
  --ink: #000000;
  --muted: #3d3d3d;
  --line: #e5e5e5;
  --surface: #ffffff;
  --page: #ffffff;
  --accent: #be1622;
  --accent-strong: #8f1019;
  --danger: #be1622;
  --shadow: 0 14px 34px rgb(0 0 0 / 8%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body.detail-open {
  overflow: hidden;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(86px, 132px) minmax(240px, 1fr) minmax(260px, 430px);
  gap: 22px;
  align-items: center;
  padding-bottom: 22px;
  border-bottom: 4px solid var(--accent);
}

.brand-logo {
  display: block;
  width: 100%;
  max-width: 132px;
  height: auto;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 4.5rem);
  line-height: 0.96;
  letter-spacing: 0;
  color: var(--accent);
  font-weight: 950;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--ink);
  font-size: clamp(0.98rem, 1.45vw, 1.28rem);
  font-weight: 650;
}

.voice-credit {
  margin: 4px 0 0;
  color: var(--ink);
  font-size: clamp(0.86rem, 1.1vw, 1rem);
  font-weight: 560;
}

.search,
.filters label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  min-height: 44px;
  padding: 10px 12px;
  outline: none;
}

input:focus,
select:focus,
button:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgb(190 22 34 / 18%);
}

.alphabet-nav {
  display: flex;
  gap: 8px;
  margin: 18px 0;
  overflow-x: auto;
  padding: 2px 0 10px;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  touch-action: pan-x;
  -webkit-overflow-scrolling: touch;
}

.alphabet-bar {
  display: flex;
  gap: 8px;
}

.alpha-button {
  flex: 0 0 auto;
  min-width: 44px;
  min-height: 44px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
}

.alpha-button:hover,
.alpha-button:focus-visible,
.alpha-button.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--surface);
}

.filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr)) 96px;
  gap: 12px;
  align-items: end;
  margin: 18px 0;
}

.filters button,
.load-more,
.play {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  min-height: 44px;
  cursor: pointer;
}

.filters button:hover,
.load-more:hover,
.play:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.load-more {
  display: block;
  width: min(260px, 100%);
  margin: 22px auto 0;
  padding: 10px 14px;
}

.load-more[hidden] {
  display: none;
}

.status {
  min-height: 28px;
  margin: 12px 0 16px;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

.semantic-active {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 12px 0;
  padding: 10px 12px;
  border: 1px solid rgb(190 22 34 / 28%);
  border-radius: 8px;
  background: rgb(190 22 34 / 7%);
  color: var(--ink);
  font-weight: 700;
}

.semantic-active[hidden] {
  display: none;
}

.semantic-active strong {
  color: var(--accent);
}

.semantic-active button {
  flex: 0 0 auto;
  min-height: 36px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: var(--surface);
  cursor: pointer;
  font-weight: 800;
}

.word-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.word-card {
  display: grid;
  gap: 14px;
  min-height: 210px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  cursor: pointer;
}

.word-card:hover {
  border-color: var(--accent);
}

.word-card__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px;
  gap: 12px;
  align-items: start;
}

h2 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.1;
  overflow-wrap: anywhere;
  color: var(--ink);
}

.phonetic,
.definition,
.english {
  margin: 0;
}

.phonetic {
  color: var(--accent-strong);
  font-weight: 700;
}

.definition {
  color: #374151;
  line-height: 1.45;
}

.english {
  color: var(--muted);
  line-height: 1.4;
}

.play {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  min-height: 48px;
  color: var(--accent-strong);
}

.play__icon {
  display: block;
  width: 0;
  height: 0;
  margin-left: 3px;
  border-top: 9px solid transparent;
  border-bottom: 9px solid transparent;
  border-left: 14px solid currentColor;
}

.play[data-state="playing"] .play__icon {
  width: 16px;
  height: 18px;
  margin-left: 0;
  border-top: 0;
  border-bottom: 0;
  border-left: 5px solid currentColor;
  border-right: 5px solid currentColor;
}

.play[disabled] {
  cursor: not-allowed;
  opacity: 0.42;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-self: end;
}

.tag {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgb(190 22 34 / 8%);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

button.tag {
  border: 0;
  cursor: pointer;
  font: inherit;
}

button.tag:hover,
button.tag:focus-visible,
.tag.semantic.is-active {
  background: var(--accent);
  color: var(--surface);
}

.tag.category {
  background: #f4f4f4;
  color: var(--ink);
}

.tag.semantic {
  background: rgb(190 22 34 / 8%);
  color: var(--accent);
}

.detail-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgb(24 32 42 / 42%);
}

.detail-overlay[hidden] {
  display: none;
}

.detail-card {
  position: relative;
  display: grid;
  gap: 16px;
  width: min(760px, 100%);
  max-height: min(86vh, 860px);
  overflow: auto;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 24px 80px rgb(16 24 40 / 28%);
}

.detail-card__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px;
  gap: 16px;
  align-items: start;
  padding-right: 44px;
}

.detail-card h2 {
  color: var(--accent);
  font-size: clamp(2rem, 6vw, 3.6rem);
}

.detail-close {
  position: absolute;
  top: 14px;
  right: 14px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
}

.detail-close:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.detail-extra {
  display: grid;
  gap: 14px;
}

.detail-row {
  display: grid;
  gap: 6px;
}

.detail-row h3 {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0;
}

.detail-row p {
  margin: 0;
  color: #28323f;
  line-height: 1.5;
}

.detail-images {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.detail-images img {
  display: block;
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 24px, 1120px);
    padding-top: 24px;
  }

  .topbar,
  .filters {
    grid-template-columns: 1fr;
  }

  .topbar {
    justify-items: center;
    text-align: center;
  }

  .brand-logo {
    max-width: 128px;
  }

  .search {
    width: 100%;
    text-align: left;
  }

  h1 {
    font-size: 2.7rem;
  }

  .alphabet-nav {
    margin-left: -12px;
    margin-right: -12px;
    padding-left: 12px;
    padding-right: 12px;
  }

  .filters button {
    width: 100%;
  }

  .detail-overlay {
    padding: 12px;
    align-items: start;
  }

  .detail-card {
    max-height: calc(100vh - 24px);
    padding: 18px;
  }
}

@media (min-width: 721px) and (max-width: 920px) {
  .filters {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
  }
}