/* Practice-paper dictionary: characters sit in 田字格 cells, jade grid on cool paper. */

:root {
  --paper: #f6f7f4;
  --ink: #1c2321;
  --ink-soft: #55625c;
  --grid: #6f9c86;
  --grid-faint: #c9dbd1;
  --accent: #2f6b55;
  --field: #ffffff;

  --serif-zh: "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --serif: "Literata", Georgia, serif;
  --measure: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121715;
    --ink: #e6ece8;
    --ink-soft: #9dada5;
    --grid: #4e7564;
    --grid-faint: #2c3b34;
    --accent: #8cc7ae;
    --field: #1a211e;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--serif);
}

main {
  flex: 1;
  width: min(var(--measure), 100% - 32px);
  margin: 0 auto;
  padding: clamp(32px, 7vw, 72px) 0 48px;
}

[lang="zh-Hant"] {
  font-family: var(--serif-zh);
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Masthead: the title written on practice paper. */

.masthead h1 {
  margin: 0 0 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  font-weight: 400;
}

.title-cells {
  display: flex;
}

.title-cells span {
  --size: 2.75rem;
  width: var(--size);
  height: var(--size);
  display: grid;
  place-items: center;
  margin-left: -1px;
  border: 1px solid var(--grid);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1;
}

.title-cells span:first-child {
  margin-left: 0;
}

.title-en {
  font-size: 1.0625rem;
  color: var(--ink-soft);
  font-style: italic;
}

/* Search */

.search {
  display: flex;
  gap: 8px;
}

.search input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border: 2px solid var(--grid);
  border-radius: 3px;
  background: var(--field);
  color: var(--ink);
  font: inherit;
  font-size: 1.25rem;
}

.search input::-webkit-search-cancel-button {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  cursor: pointer;
  background: linear-gradient(45deg, transparent 45%, var(--ink-soft) 45% 55%, transparent 55%),
    linear-gradient(-45deg, transparent 45%, var(--ink-soft) 45% 55%, transparent 55%);
}

.search input::placeholder {
  color: var(--ink-soft);
  opacity: 0.8;
}

.search input:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--grid-faint);
}

.search button {
  padding: 0 20px;
  border: 0;
  border-radius: 3px;
  background: var(--ink);
  color: var(--paper);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.search button:hover {
  background: var(--accent);
}

.status {
  min-height: 1.6em;
  margin: 12px 0 0;
  color: var(--ink-soft);
}

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

.examples p {
  margin: 4px 0 0;
  color: var(--ink-soft);
}

.examples button {
  margin: 4px 2px;
  padding: 2px 10px;
  border: 1px solid var(--grid-faint);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

.examples button:hover {
  border-color: var(--grid);
}

/* The main entry: one 田字格 cell per character, pinyin above. */

.result {
  margin-top: 24px;
}

.result[aria-busy="true"] {
  opacity: 0.55;
}

.cells {
  --cell: 8.5rem;
  display: grid;
  grid-template-columns: repeat(var(--n), minmax(0, var(--cell)));
  margin: 8px 0 20px;
}

.glyph {
  display: grid;
  grid-template-rows: auto auto;
  text-align: center;
}

.glyph + .glyph .cell {
  border-left-width: 0;
}

.py {
  min-height: 1.6em;
  font-size: clamp(0.9375rem, 3vw, 1.25rem);
  color: var(--ink-soft);
}

.cell {
  container-type: inline-size;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 2px solid var(--grid);
  background:
    repeating-linear-gradient(to right, var(--grid-faint) 0 6px, transparent 6px 12px) center / 100% 1px no-repeat,
    repeating-linear-gradient(to bottom, var(--grid-faint) 0 6px, transparent 6px 12px) center / 1px 100% no-repeat;
}

.char {
  font-size: 70cqi;
  font-weight: 500;
  line-height: 1;
  animation: ink-in 0.6s ease-out both;
  animation-delay: calc(var(--i, 0) * 80ms);
}

@keyframes ink-in {
  from {
    opacity: 0;
    filter: blur(4px);
  }
  to {
    opacity: 1;
    filter: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .char {
    animation: none;
  }
}

.py-line {
  margin: -8px 0 16px;
  font-size: 1.25rem;
  color: var(--ink-soft);
}

.entry-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.numbered {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.listen {
  padding: 4px 12px;
  border: 1px solid var(--grid);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.9375rem;
  cursor: pointer;
}

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

.senses {
  margin: 0;
  padding-left: 1.5em;
  font-size: 1.1875rem;
}

.senses li + li {
  margin-top: 2px;
}

.senses li::marker {
  color: var(--grid);
}

.measure {
  margin: 12px 0 0;
  color: var(--ink-soft);
}

.measure [lang="zh-Hant"] {
  color: var(--ink);
  font-size: 1.125rem;
}

/* Other results */

.more {
  margin-top: 40px;
}

.more h2 {
  margin: 0 0 4px;
  font-size: 1.0625rem;
  font-weight: 600;
}

.more ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.row {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(4.5rem, auto) 1fr;
  gap: 0 16px;
  padding: 10px 4px;
  border: 0;
  border-bottom: 1px solid var(--grid-faint);
  background: transparent;
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.row:hover {
  background: color-mix(in srgb, var(--grid-faint) 40%, transparent);
}

.row-zh {
  grid-row: span 2;
  font-size: 1.5rem;
  line-height: 1.3;
}

.row-py {
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.row-def {
  overflow-wrap: anywhere;
}

.count {
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

/* Footer */

.colophon {
  width: min(var(--measure), 100% - 32px);
  margin: 0 auto;
  padding: 20px 0 32px;
  border-top: 1px solid var(--grid-faint);
  color: var(--ink-soft);
  font-size: 0.875rem;
}

.colophon p {
  margin: 0 0 6px;
}

@media (max-width: 480px) {
  .search {
    flex-direction: column;
  }

  .search button {
    padding: 12px;
  }

  .title-cells span {
    --size: 2.375rem;
    font-size: 1.5rem;
  }
}