:root {
  --bg: #f6f5f2; --card: #ffffff; --ink: #1d1d1f; --muted: #6b6860; --line: #d9d6cf;
  --accent: #1d1d1f; --hl: rgba(255, 196, 0, .28); --play: rgba(40, 140, 255, .22);
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1c1c1e; --card: #2a2a2d; --ink: #f2f2f2; --muted: #a8a59d; --line: #45444a; --accent: #f2f2f2;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 14px; }
button, select, input, textarea { font: inherit; color: inherit; }
button { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; cursor: pointer; }
button:hover:not(:disabled) { filter: brightness(.96); }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 600; padding: 9px 22px; }
button.ghost { background: transparent; border-color: transparent; }
button.wide { width: 100%; margin-top: 8px; }
select, input[type=number], input[type=text], input[type=password], textarea {
  background: var(--card); border: 1px solid var(--line); border-radius: 5px; padding: 4px 6px; max-width: 100%;
}
textarea { width: 100%; font-family: Menlo, Consolas, monospace; font-size: 12px; }
.muted { color: var(--muted); } .small { font-size: 12px; }
header.top { display: flex; align-items: center; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line);
  background: var(--card); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
.brand { font-size: 16px; } .brand b { font-weight: 700; }
header nav { margin-left: auto; display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.page { max-width: 920px; margin: 0 auto; padding: 16px; }
#editor.page { max-width: none; padding: 0; }
.drop { border: 2px dashed #b5b1a7; border-radius: 12px; background: var(--card); padding: 26px 16px; text-align: center; }
.drop.hover { border-color: var(--ink); filter: brightness(.97); }
.drop-title { font-size: 18px; margin-bottom: 4px; }
.drop button { margin-top: 10px; }
.file-name { margin-top: 8px; font-weight: 600; word-break: break-all; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; margin-top: 14px; }
.card h2, .card h3 { margin: 0 0 10px; font-size: 14px; }
.grid { display: grid; grid-template-columns: max-content 1fr; gap: 8px 12px; align-items: center; }
.grid > label { text-align: right; color: var(--muted); }
.grid.small { gap: 6px 8px; font-size: 13px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.wrap { gap: 16px; }
.lbl { color: var(--muted); }
.check { display: inline-flex; gap: 6px; align-items: center; color: var(--ink) !important; text-align: left !important; }
.actions { display: flex; gap: 12px; align-items: center; margin-top: 16px; flex-wrap: wrap; }
.grow { flex: 1; }
.progress { height: 8px; background: var(--card); border: 1px solid var(--line); border-radius: 4px; margin-top: 12px; overflow: hidden; }
#bar { height: 100%; width: 0; background: var(--accent); transition: width .2s; }
.log { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 8px; min-height: 120px;
  max-height: 260px; overflow: auto; font-size: 11px; white-space: pre-wrap; margin-top: 12px; }
.results h3 { font-size: 14px; margin: 16px 0 6px; }
.downloads { display: flex; flex-wrap: wrap; gap: 8px; }
.downloads a { display: inline-block; padding: 7px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--card);
  color: var(--ink); text-decoration: none; }
.toolbar { display: flex; gap: 6px; align-items: center; padding: 8px 12px; border-bottom: 1px solid var(--line);
  background: var(--card); flex-wrap: wrap; position: sticky; top: 49px; z-index: 4; }
.toolbar .sep { width: 1px; height: 22px; background: var(--line); margin: 0 4px; }
#ed-bpm { width: 70px; }
.editor-body { display: grid; grid-template-columns: 1fr 340px; height: calc(100vh - 100px); }
.score { overflow: auto; background: #e9e7e2; padding: 8px 0; }
.score .page-svg { background: #fff; margin: 12px auto; box-shadow: 0 1px 4px rgba(0,0,0,.18); width: fit-content; }
.score .page-svg svg { display: block; }
.score g.measure { cursor: pointer; }
.side { overflow: auto; padding: 0 12px 16px; border-left: 1px solid var(--line); }
.side .card { margin-top: 12px; }
.sel-label { font-weight: 600; margin-top: 12px; }
.side .row { margin-top: 8px; }
@media (max-width: 860px) {
  .editor-body { grid-template-columns: 1fr; height: auto; }
  .score { max-height: 70vh; }
  .side { border-left: 0; }
  .grid { grid-template-columns: 1fr; } .grid > label { text-align: left; }
}
dialog { border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink); max-width: 560px; width: 92vw; }
dialog::backdrop { background: rgba(0,0,0,.35); }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 14px 0 0; }
dialog textarea, dialog input[type=text] { width: 100%; margin: 6px 0; }
.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg);
  padding: 10px 16px; border-radius: 8px; z-index: 50; max-width: 90vw; }