:root {
  --bg: #f6f5f1; --surface: #fff; --text: #1d1d1b; --muted: #6b6a66; --line: #dedbd2;
  --accent: #b3261e; --ok: #1f7a4d; --bad: #b3261e; --chip: #efece3;
  font-family: "Yu Gothic UI", "Hiragino Sans", "Noto Sans JP", "Segoe UI", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161615; --surface: #20201e; --text: #eceae4; --muted: #9b9a94; --line: #3a3935; --accent: #ef7b72; --ok: #5cc28e; --bad: #ef7b72; --chip: #2b2a27; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.45; }
header { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: center; justify-content: space-between; padding: .8rem 1rem; border-bottom: 1px solid var(--line); background: var(--surface); }
h1 { font-size: 1.15rem; margin: 0; } h1 span { color: var(--muted); font-weight: 400; font-size: .9rem; margin-left: .4rem; }
nav button { font: inherit; border: 0; background: none; padding: .45rem .9rem; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; }
nav button.active { color: var(--text); border-color: var(--accent); }
main { max-width: 860px; margin: 0 auto; padding: 1rem; }
h2 { font-size: 1.05rem; margin: 1.2rem 0 .5rem; }
.panel, .card, .result { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 1rem; margin: .8rem 0; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
input[type=text], input[type=number], select, textarea { font: inherit; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); }
input[type=text].grow { flex: 1; min-width: 12rem; }
textarea { width: 100%; }
button.btn { font: inherit; padding: .5rem 1rem; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--text); cursor: pointer; }
button.btn.primary { background: var(--text); color: var(--bg); border-color: var(--text); }
button.btn.ok { background: var(--ok); color: #fff; border-color: var(--ok); }
button.btn.bad { background: var(--bad); color: #fff; border-color: var(--bad); }
button.btn:disabled { opacity: .5; cursor: default; }
.muted { color: var(--muted); font-size: .9rem; }
.badge { display: inline-block; font-size: .75rem; padding: .1rem .5rem; border-radius: 99px; background: var(--chip); color: var(--muted); margin-right: .3rem; }
.badge.char { background: var(--accent); color: #fff; }
.chip { display: inline-flex; gap: .3rem; align-items: center; background: var(--chip); border-radius: 6px; padding: .2rem .55rem; margin: .15rem .25rem .15rem 0; font-size: .88rem; cursor: pointer; }
.fields { display: grid; grid-template-columns: 7rem 1fr; gap: .2rem .8rem; margin: .5rem 0; }
.fields dt { color: var(--muted); font-size: .85rem; } .fields dd { margin: 0; }
.jp-big { font-size: 2.6rem; line-height: 1.2; }
.forms { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .4rem; margin: .6rem 0; }
.forms div { background: var(--bg); border-radius: 6px; padding: .35rem .6rem; font-size: .9rem; }
.forms small { color: var(--muted); display: block; }
.card { text-align: center; padding: 1.5rem 1rem; }
.card .badges { margin-bottom: .8rem; }
.card .kanji { font-size: 3.6rem; line-height: 1.15; }
.card .kana { font-size: 1.6rem; color: var(--muted); }
.card .kana.only { font-size: 3.4rem; color: var(--text); line-height: 1.15; }
.card .de { font-size: 1.7rem; }
.card .romaji { font-size: 1.15rem; color: var(--accent); margin-top: .3rem; }
.card .sep { border: 0; border-top: 1px dashed var(--line); margin: 1rem 0; }
.context { text-align: left; background: var(--bg); border-left: 3px solid var(--accent); border-radius: 4px; padding: .5rem .8rem; margin-top: 1rem; font-size: .92rem; }
.context b { display: block; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.actions { display: flex; justify-content: center; gap: .6rem; margin-top: 1rem; flex-wrap: wrap; }
.status { text-align: center; color: var(--muted); font-size: .88rem; min-height: 1.3rem; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; } td, th { text-align: left; padding: .35rem .4rem; border-bottom: 1px solid var(--line); }
.who { cursor: pointer; color: var(--muted); font-size: .9rem; margin-left: auto; }
body.picking nav, body.picking .who { display: none; }
.users { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .6rem; margin: .6rem 0; }
button.btn.user { display: flex; flex-direction: column; align-items: flex-start; gap: .1rem; padding: .7rem 1rem; text-align: left; }
.panel.narrow { max-width: 420px; margin: 2rem auto; }
.stack { display: flex; flex-direction: column; gap: .5rem; }
input[type=password] { font: inherit; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); }