@font-face {
  font-family: "HanziSerif";
  src: url("fonts/hanzi.woff2") format("woff2");
  font-display: block;
}

:root {
  --fg: 239, 230, 210;   /* text and strokes */
  --bg: 12, 16, 22;      /* panels */
  --ink: #0c1016;
  --ink2: #161d27;
  --paper: rgb(var(--fg));
  --dim: rgba(var(--fg), 0.55);
  --line: rgba(var(--fg), 0.16);
  --red: #c8503c;
  --serif: "Cormorant Garamond", Georgia, serif;
  --hz: "HanziSerif", "Noto Serif SC", serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  color: var(--paper);
  background: radial-gradient(ellipse at 50% 40%, var(--ink2), var(--ink) 70%);
  font: 17px/1.4 var(--serif);
}

:root[data-theme="light"] {
  --fg: 30, 34, 44;
  --bg: 248, 244, 235;
  --ink: #efe8da;
  --ink2: #faf7f0;
  --red: #b8402e;
}
:root[data-theme="light"] #card { box-shadow: 0 10px 40px rgba(60, 50, 30, 0.12); }

.hz { font-family: var(--hz); }

#theme { font-size: 18px; color: var(--dim); padding: 0 6px; }
#lang { font-size: 14px; letter-spacing: 0.08em; color: var(--dim); padding: 1px 8px; border: 1px solid var(--line); border-radius: 999px; }
#lang:hover { color: var(--paper); }
#theme:hover { color: var(--paper); }
#legend .plain::before { display: none; }

#scene {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  outline: none;
  touch-action: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
}

a { color: inherit; }

/* --- top bar --- */
#bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding: 12px 16px 22px;
  pointer-events: none;
  background: linear-gradient(rgba(var(--bg), 0.92), rgba(var(--bg), 0.6) 65%, rgba(var(--bg), 0));
}
#bar > * { pointer-events: auto; }
#bar .home { font-style: italic; color: var(--dim); text-decoration: none; }
#bar .home:hover { color: var(--paper); }
#bar h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: 0.06em;
}
#bar h1 .hz { color: var(--red); margin-right: 4px; }
#bar .intro { font-style: italic; color: var(--dim); text-decoration-color: var(--red); text-underline-offset: 3px; }
#bar .intro:hover { color: var(--paper); }
#card h2 .why { margin-left: 6px; font-size: 12px; font-weight: 400; letter-spacing: 0; text-transform: none; font-style: italic; color: var(--dim); }
#bar .group { display: flex; gap: 2px; }
#bar .group button {
  padding: 2px 9px;
  color: var(--dim);
  border-radius: 999px;
}
#bar .group button:hover { color: var(--paper); }
#bar .group button.on { color: var(--paper); border-color: var(--line); background: rgba(var(--fg), 0.06); }
#search {
  font: 16px var(--serif);
  color: var(--paper);
  background: rgba(var(--fg), 0.05);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  width: 150px;
  outline: none;
}
#search:focus { border-color: var(--dim); }
#search::placeholder { color: var(--dim); }

#legend {
  position: fixed;
  left: 16px;
  bottom: 14px;
  display: flex;
  gap: 14px;
  font-size: 14px;
  color: var(--dim);
  pointer-events: none;
}
#legend span::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
  background: var(--c);
}

#hover {
  position: fixed;
  pointer-events: none;
  padding: 2px 8px;
  font-size: 15px;
  color: var(--paper);
  background: rgba(var(--bg), 0.8);
  border: 1px solid var(--line);
  border-radius: 6px;
  transform: translate(12px, -130%);
  white-space: nowrap;
}

#loading {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  font-style: italic;
  color: var(--dim);
  pointer-events: none;
  transition: opacity 0.6s;
}
#loading.done { opacity: 0; }

/* --- card --- */
#card {
  position: fixed;
  top: 64px;
  right: 16px;
  bottom: 16px;
  width: min(420px, calc(100vw - 32px));
  overflow-y: auto;
  padding: 18px 20px 14px;
  background: rgba(var(--bg), 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: 14px;
}
#card .close {
  position: absolute;
  top: 8px;
  right: 10px;
  font-size: 24px;
  color: var(--dim);
}
#card .head { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; }
#card .big { font-size: 76px; line-height: 1; }
#card .level { font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim); }
#card .readings { font-size: 22px; }
#card .readings span + span::before { content: " · "; color: var(--dim); }
#card .strokes { text-align: center; }
#writer { width: 96px; height: 96px; border: 1px solid var(--line); border-radius: 8px; }
.writer-tools { display: flex; gap: 2px; justify-content: center; margin-top: 4px; }
.writer-tools button { font-size: 13px; color: var(--dim); padding: 0 6px; }
.writer-tools button:hover { color: var(--paper); }

#card section { margin-top: 14px; }
#card h2 {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}
#card ol { margin: 0; padding-left: 20px; }
#card .other { font-size: 15px; color: var(--dim); margin-top: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: inline-flex;
  gap: 6px;
  align-items: baseline;
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 15px;
}
.chip .hz { font-size: 20px; }
.chip.go:hover { border-color: var(--dim); background: rgba(var(--fg), 0.06); }
.chip small { color: var(--dim); }
.ety { font-size: 15px; color: var(--dim); margin-top: 6px; }

.word { display: grid; grid-template-columns: auto auto 1fr; gap: 0 10px; align-items: baseline; padding: 3px 0; border-top: 1px solid rgba(var(--fg), 0.07); }
.word .hz { font-size: 20px; }
.word .py { color: var(--dim); }
.word .gl { font-size: 15px; }
.word .lv { grid-column: 1 / -1; font-size: 12px; color: var(--dim); }
.muted { color: var(--dim); font-size: 15px; font-style: italic; }

.ex { padding: 6px 0; border-top: 1px solid rgba(var(--fg), 0.07); }
.ex .zh { font-size: 20px; }
.ex mark { color: var(--red); background: none; }
.ex .py { font-size: 15px; color: var(--dim); }
.ex .tr { font-size: 16px; }
.ex .tr small, .ex .lv { font-size: 12px; color: var(--dim); }

.pos { display: flex; flex-wrap: wrap; gap: 4px; margin: 2px 0 6px; }
.pos button {
  font-size: 13px;
  color: var(--dim);
  padding: 0 8px;
  border-radius: 999px;
  border-color: var(--line);
}
.pos button.on { color: var(--paper); background: rgba(var(--fg), 0.08); }

#card .sources { margin-top: 18px; font-size: 12px; color: var(--dim); }

/* --- search results, phones only --- */
#results {
  position: fixed;
  left: 8px;
  right: 8px;
  bottom: 8px;
  overflow-y: auto;
  padding: 6px 4px;
  background: rgba(var(--bg), 0.86);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 14px;
}
#results .rhead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 10px 4px;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dim);
}
#results .rhead button { font-size: 22px; color: var(--dim); }
#results .row {
  display: grid;
  grid-template-columns: 44px 70px 1fr auto;
  gap: 8px;
  align-items: baseline;
  width: 100%;
  padding: 4px 10px;
  text-align: left;
  border-top: 1px solid rgba(var(--fg), 0.07);
}
#results .row .hz { font-size: 28px; }
#results .row .gl { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#results .row .lv { font-size: 12px; color: var(--dim); }

/* --- practice: the writer alone, large --- */
#card .grip { display: none; }
[data-writer="done"] { display: none; }
#card.practice > section, #card.practice .big, #card.practice .meta, #card.practice .sources { display: none; }
#card.practice .head { grid-template-columns: 1fr; justify-items: center; }
#card.practice #writer { border-color: var(--dim); }
#card.practice { background: rgb(var(--bg)); backdrop-filter: none; -webkit-backdrop-filter: none; }
#card.practice [data-writer="done"] { display: inline; }
#card.practice .writer-tools { gap: 14px; margin-top: 10px; }
#card.practice .writer-tools button { font-size: 16px; }

@media (max-width: 700px) {
  #card .grip {
    display: block;
    position: absolute;
    top: 4px;
    left: 50%;
    width: 46px;
    height: 14px;
    transform: translateX(-50%);
  }
  #card .grip::before {
    content: "";
    position: absolute;
    left: 6px;
    right: 6px;
    top: 5px;
    height: 4px;
    border-radius: 2px;
    background: var(--line);
  }
  #card { transition: max-height 0.3s ease; }
  #card.peek { max-height: 134px; overflow: hidden; }
  #card.practice { max-height: 82vh; height: 82vh; }
  #bar { gap: 6px 10px; padding: 10px 12px; font-size: 15px; }
  #bar h1 { font-size: 17px; }
  #search { width: 120px; }
  #card {
    top: auto;
    left: 8px;
    right: 8px;
    bottom: 8px;
    width: auto;
    max-height: 58vh;
  }
  #card .big { font-size: 58px; }
  #legend { display: none; }
}