:root {
  --bg: #f6f3ee;
  --fg: #1d1b18;
  --muted: #7a746b;
  --line: #ddd6cb;
  --accent: #b5452f;
  --accent-soft: #f3e1dc;
  --ok: #3f8f4f;
  --ok-soft: #dcefe0;
  --btn: #ebe6de;
  --plate: #fffdf9;
  --jp: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Noto Sans CJK JP", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, sans-serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --tabbar: calc(64px + env(safe-area-inset-bottom));
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #ece8e1;
    --muted: #8d887f;
    --line: #2e2d33;
    --accent: #e0765f;
    --accent-soft: #3a2420;
    --ok: #6cc07d;
    --ok-soft: #1f3324;
    --btn: #25242a;
    --plate: #1f1e23;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-bottom: calc(var(--tabbar) + 8px); }
body {
  margin: 0 auto;
  max-width: 560px;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  display: flex;
  flex-direction: column;
  padding: env(safe-area-inset-top) 16px var(--tabbar);
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}
[lang="ja"], .ja { font-family: var(--jp); }
button {
  font: inherit;
  color: inherit;
  background: var(--btn);
  border: 0;
  border-radius: 12px;
  min-height: 48px;
  padding: 0 14px;
  cursor: pointer;
  touch-action: manipulation;
}
button:disabled { opacity: .35; }
.primary { background: var(--fg); color: var(--bg); }
.danger { color: var(--accent); }
.wide { width: 100%; }
.muted { color: var(--muted); font-size: .9rem; line-height: 1.4; }
select, input[type="text"], input[type="url"], input[type="date"], input[type="time"], textarea {
  font: inherit;
  color: inherit;
  background: var(--btn);
  border: 0;
  border-radius: 10px;
  min-height: 44px;
  padding: 0 10px;
  min-width: 0;
}
textarea { padding: 10px; min-height: 64px; resize: vertical; width: 100%; font-family: var(--jp); }

header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
}
header h1 { font-size: 1.05rem; margin: 0; font-weight: 600; }
#score { flex: 1; text-align: center; margin: 0; font-size: .85rem; color: var(--muted); white-space: nowrap; }
#score b { color: var(--fg); font-weight: 600; }
#menu-btn { min-width: 48px; font-size: 1.2rem; background: none; }

main { flex: 1; display: flex; flex-direction: column; }
.tab { flex: 1; display: flex; flex-direction: column; }
.tab[hidden] { display: none; }
.tab h2 { font-size: 1.05rem; margin: 20px 0 6px; }
.tab h2:first-child { margin-top: 8px; }

/* segmented control */
.seg { display: flex; gap: 4px; background: var(--btn); padding: 4px; border-radius: 14px; }
.seg button { flex: 1; min-height: 40px; padding: 0 4px; background: none; border-radius: 10px; font-size: .9rem; white-space: nowrap; }
.seg button[aria-selected="true"] { background: var(--bg); font-weight: 600; box-shadow: 0 1px 2px rgb(0 0 0 / .12); }

.filters { display: flex; gap: 6px; margin: 8px 0 0; }
.filters select { flex: 1; font-size: .9rem; }
#f-missed { min-height: 44px; font-size: .9rem; color: var(--accent); padding: 0 12px; white-space: nowrap; }
#f-missed[aria-pressed="true"] { background: var(--accent); color: #fff; }

.view { flex: 1; display: flex; flex-direction: column; padding-top: 12px; }
.empty { margin: auto; text-align: center; color: var(--muted); padding: 24px; }

/* the sign plate */
.stage { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; min-height: 180px; }
.meta { font-size: .8rem; color: var(--muted); margin: 0 0 10px; }
.plate {
  --n: 4;
  --size: max(34px, min(22vw, 104px, calc((min(100vw, 560px) - 80px) / var(--n))));
  font-family: var(--jp);
  font-weight: 700;
  font-size: var(--size);
  line-height: 1.2;
  background: var(--plate);
  border: 3px solid var(--fg);
  border-radius: 14px;
  padding: 14px 18px;
  max-width: 100%;
  overflow-wrap: anywhere;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}
.plate.blank { color: transparent; border-style: dashed; border-color: var(--line); }
.timer { width: 60%; height: 4px; border-radius: 2px; background: var(--line); margin-top: 16px; overflow: hidden; }
.timer i { display: block; height: 100%; background: var(--accent); transform-origin: left; }
.answer { margin-top: 14px; min-height: 5.5em; }
.answer .rd { font-family: var(--jp); font-size: 1.4rem; margin: 0 0 4px; }
.answer .en { font-size: 1.15rem; margin: 0 0 4px; }
.answer .where { color: var(--muted); font-size: .9rem; margin: 0 0 4px; }
.answer .note { color: var(--muted); font-size: .9rem; margin: 6px auto 0; max-width: 34em; line-height: 1.4; }
.tags { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.tag { font-size: .72rem; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; }

/* answer choices, kept near the thumb */
.choices { display: grid; gap: 8px; padding: 12px 0 16px; }
.choices button { min-height: 56px; font-size: 1.05rem; line-height: 1.25; padding: 8px 14px; }
.choices.ja button { font-family: var(--jp); font-size: 1.6rem; font-weight: 700; }
.choices.ja button small { display: block; font-family: var(--sans); font-weight: 400; font-size: .8rem; color: var(--muted); }
.choices button.right { background: var(--ok); color: #fff; }
.choices button.right small { color: #fff; }
.choices button.wrong { background: var(--accent); color: #fff; }
.choices button.wrong small { color: #fff; }
.prompt { font-size: 1.5rem; font-weight: 600; margin: 0; }
.bar { display: flex; gap: 8px; padding: 12px 0 16px; }
.bar button { flex: 1; min-height: 56px; font-size: 1.05rem; }
.bar .ok, .more .ok { background: var(--ok-soft); color: var(--ok); }
.bar .x, .more .x { background: var(--accent-soft); color: var(--accent); }
.hint { text-align: center; color: var(--muted); font-size: .8rem; margin: 0 0 8px; }

/* route list */
.leg-head { position: sticky; top: 0; z-index: 1; background: var(--bg); display: flex; align-items: center; justify-content: space-between; padding: 10px 0 6px; border-bottom: 2px solid var(--fg); }
.leg-head h3 { margin: 0; font-size: 1rem; }
.leg-head small { color: var(--muted); font-weight: 400; }
.list { list-style: none; margin: 0 0 16px; padding: 0; }
.list > li { border-bottom: 1px solid var(--line); }
.list .row-btn {
  width: 100%;
  background: none;
  border-radius: 0;
  text-align: left;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 2px;
}
.row-btn .ja { font-size: 1.35rem; font-weight: 700; flex: 1; overflow-wrap: anywhere; }
.row-btn .st { width: 18px; text-align: center; color: var(--muted); flex: none; }
.st.ok { color: var(--ok); }
.st.x { color: var(--accent); }
.more { padding: 0 2px 12px 30px; }
.more p { margin: 0 0 4px; }
.more .rd { font-family: var(--jp); font-size: 1.1rem; }
.more .note, .more .where { color: var(--muted); font-size: .9rem; line-height: 1.4; }
.more .row { margin-top: 8px; }
.more .row button { min-height: 44px; font-size: .95rem; }

/* pocket */
#pocket-view { padding-top: 8px; }
.group-head { margin: 18px 0 4px; font-size: .95rem; color: var(--muted); font-weight: 600; }
.phrase .ja { font-size: 1.15rem; font-weight: 500; line-height: 1.45; }
.phrase .icon { flex: none; color: var(--muted); font-size: .9rem; }
.ph { color: var(--accent); }
.me-form { display: grid; gap: 10px; padding-top: 8px; }
.me-form label { display: grid; gap: 4px; font-size: .85rem; color: var(--muted); }
.me-form input, .me-form textarea { font-size: 1rem; color: var(--fg); }
.stay { border: 1px solid var(--line); border-radius: 14px; padding: 12px; display: grid; gap: 10px; }
.stay.current { border-color: var(--accent); }
.stay .row button { min-height: 44px; font-size: .9rem; }

.row { display: flex; gap: 8px; }
.row button { flex: 1; }
.quick { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 10px 0; }
.quick button { font-size: .95rem; }
details { margin: 12px 0; }
summary { padding: 12px 0; cursor: pointer; color: var(--muted); }
.sel { display: flex; align-items: center; gap: 12px; min-height: 48px; border-bottom: 1px solid var(--line); }
.sel input { width: 22px; height: 22px; accent-color: var(--accent); flex: none; }
.sel .ja { font-size: 1.15rem; font-weight: 700; }
.sel small { color: var(--muted); }
.sel .st { margin-left: auto; }
#reset { margin-top: 10px; }

/* bottom tab bar */
.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 5;
  display: flex;
  justify-content: center;
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 4px 8px env(safe-area-inset-bottom);
}
.tabbar button {
  flex: 1;
  max-width: 180px;
  background: none;
  min-height: 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: .75rem;
  color: var(--muted);
}
.tabbar span { font-family: var(--jp); font-size: 1.25rem; font-weight: 700; line-height: 1; }
.tabbar button[aria-selected="true"] { color: var(--accent); }

/* full-screen card */
#card {
  width: 100vw;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: env(safe-area-inset-top) 16px env(safe-area-inset-bottom);
  border: 0;
  background: var(--plate);
  color: var(--fg);
}
#card[open] { display: flex; flex-direction: column; }
#card::backdrop { background: var(--plate); }
.card-body { flex: 1; display: flex; flex-direction: column; justify-content: center; text-align: center; overflow-y: auto; }
#card-ja {
  font-family: var(--jp);
  font-weight: 700;
  font-size: var(--size, 48px);
  line-height: 1.35;
  margin: 0;
  overflow-wrap: anywhere;
  line-break: strict;
}
#card-en { color: var(--muted); font-size: 1rem; margin: 24px 0 0; }
.card-nav { display: flex; gap: 8px; padding: 8px 0 16px; }
.card-nav button { flex: 1; min-height: 56px; }
.card-nav button:first-child, .card-nav button:last-child { flex: 0 0 72px; font-size: 1.6rem; }

dialog#menu {
  border: 0;
  border-radius: 16px;
  background: var(--bg);
  color: var(--fg);
  width: min(92vw, 420px);
  max-height: 90dvh;
  overflow-y: auto;
  padding: 20px;
}
dialog#menu::backdrop { background: rgb(0 0 0 / .45); }
#menu h2 { margin: 0 0 10px; font-size: 1.1rem; }
#menu h2:not(:first-child) { margin-top: 22px; }
#menu .field { display: flex; justify-content: space-between; min-height: 32px; align-items: center; }
#menu input[type="range"] { width: 100%; accent-color: var(--accent); min-height: 44px; }
#menu button { width: 100%; margin-top: 16px; }
.credits { color: var(--muted); font-size: .85rem; line-height: 1.45; }
.credits a { color: inherit; }

#toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tabbar) + 16px);
  transform: translateX(-50%);
  background: var(--fg);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: 10px;
  font-size: .9rem;
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
  max-width: calc(100vw - 32px);
  z-index: 10;
}
#toast.on { opacity: .92; }

/* diary */
#diary-view { padding-top: 8px; }
.d-actions { display: flex; gap: 8px; margin: 4px 0 8px; }
.d-actions button { flex: 0 0 auto; }
.d-actions select { flex: 1; min-width: 0; }
.d-tools { margin: 20px 0 8px; }
.d-tools button { font-size: .9rem; }
.d-mini { min-height: 36px; font-size: .85rem; padding: 0 10px; }
.leg-head h3 { font-size: .95rem; }
.d-today { font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); border: 1px solid var(--accent); border-radius: 4px; padding: 0 5px; vertical-align: 2px; }
.d-banner { margin: 8px 0 0; padding: 8px 12px; border-radius: 10px; background: var(--btn); border-left: 4px solid var(--ok); display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.d-banner.move { border-left-color: var(--accent); }
.d-banner small { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-size: .7rem; }
.d-item { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 10px; padding: 12px 0; }
.d-time { color: var(--muted); font-size: .85rem; font-variant-numeric: tabular-nums; padding-top: 2px; }
.d-time b { color: var(--fg); font-weight: 600; }
.d-main p { margin: 0 0 4px; }
.d-title { font-weight: 600; font-size: 1.05rem; overflow-wrap: anywhere; }
.d-note { color: var(--muted); font-size: .9rem; line-height: 1.4; white-space: pre-wrap; overflow-wrap: anywhere; }
.d-main .row { margin-top: 8px; }
.d-main .row button, .d-main .row .btn { min-height: 44px; font-size: .9rem; }
.d-plan { grid-template-columns: 92px minmax(0, 1fr); }
.d-plan.past { opacity: .55; }
.d-plan.now .d-time b { color: var(--accent); }
.btn { flex: 1; display: flex; align-items: center; justify-content: center; text-decoration: none; color: inherit; background: var(--btn); border-radius: 12px; padding: 0 14px; }
dialog#d-dlg { border: 0; border-radius: 16px; background: var(--bg); color: var(--fg); width: min(94vw, 460px); max-height: 92dvh; overflow-y: auto; padding: 20px; }
dialog#d-dlg::backdrop { background: rgb(0 0 0 / .45); }
#d-form h2 { margin: 0; font-size: 1.1rem; }
#d-form input, #d-form select { width: 100%; font-size: 1rem; color: var(--fg); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 380px) { .row2 { grid-template-columns: 1fr; } }
.d-inline { display: flex; gap: 6px; }
.d-inline input { flex: 1; }
#d-paste { flex: 0 0 auto; min-height: 44px; }
.d-err { color: var(--accent); margin: 0; min-height: 1.2em; font-size: .9rem; }