:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #1c2024;
  --muted: #666e78;
  --line: #d9dee4;
  --accent: #1f6feb;
  --accent-dark: #1858c0;
  --danger: #d13b28;
  --warn: #b8860b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

main { max-width: 1440px; margin: 0 auto; padding: 0 16px 64px; }

.app-header {
  background: linear-gradient(135deg, #1f6feb, #123a7a);
  color: #fff;
  padding: 28px 16px 24px;
  text-align: center;
}
.app-header h1 { margin: 0 0 6px; font-size: 1.7rem; }
.app-header .subtitle { margin: 0; font-size: .95rem; opacity: .95; }
.app-header strong { background: rgba(255,255,255,.18); padding: 1px 6px; border-radius: 4px; }

.app-footer {
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
  padding: 20px 16px 40px;
}

h2 { font-size: 1.05rem; margin: 0 0 12px; }
h3 { font-size: .95rem; margin: 18px 0 6px; color: var(--muted); }

.hidden, [hidden] { display: none !important; }

/* ---------- カード ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin: 18px 0;
}
.card > summary { cursor: pointer; font-weight: bold; }

/* ---------- ドロップゾーン ---------- */
.drop-zone {
  margin: 24px 0;
  border: 2px dashed var(--line);
  border-radius: var(--radius);
  background: var(--card);
  transition: border-color .15s, background .15s;
}
.drop-zone.over { border-color: var(--accent); background: #eef4ff; }
.drop-zone.compact .drop-inner { padding: 16px; }
.drop-zone.compact .drop-main { font-size: .95rem; }
.drop-zone.compact .drop-sub,
.drop-zone.compact .drop-note { display: none; }

.drop-inner { padding: 40px 20px; text-align: center; }
.drop-main { font-size: 1.1rem; font-weight: bold; margin: 0 0 8px; }
.drop-sub { color: var(--muted); margin: 4px 0 12px; }
.drop-formats { color: var(--muted); font-size: .85rem; margin: 14px 0 4px; }
.drop-note { color: var(--muted); font-size: .8rem; margin: 0; }

/* ---------- ボタン ---------- */
.btn {
  display: inline-block;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 8px 16px;
  font-size: .92rem;
  cursor: pointer;
  background: #eef1f5;
  color: var(--ink);
  font-family: inherit;
}
.btn:hover { filter: brightness(.97); }
.btn:disabled { opacity: .5; cursor: default; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: #fff; border-color: var(--line); }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }

.mini {
  font-size: .75rem;
  padding: 2px 8px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 5px;
  cursor: pointer;
  color: var(--muted);
  font-family: inherit;
}
.mini:hover { background: #f0f3f7; }

/* ---------- 設定 ---------- */
.mode-tabs { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.mode-tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 7px 14px;
  cursor: pointer;
  font-size: .88rem;
  font-family: inherit;
}
.mode-tab.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px 16px;
}
.field { display: flex; flex-direction: column; gap: 4px; font-size: .85rem; }
.field > span { color: var(--muted); }
.field.wide { grid-column: 1 / -1; }
.field.inline { flex-direction: row; align-items: center; gap: 6px; }
.field.inline input { width: 70px; }
.field.checkbox { flex-direction: row; align-items: center; gap: 8px; }
.field select, .field input[type="text"], .field input[type="password"], .field input[type="number"] {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: .9rem;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
  min-width: 0;
}
.field input[type="range"] { accent-color: var(--accent); }

.tuning { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.tuning summary { cursor: pointer; font-size: .88rem; color: var(--muted); }
.tuning .grid { margin-top: 12px; }

.warn-box {
  background: #fff8e6;
  border: 1px solid #ecd9a0;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: .85rem;
  margin: 0 0 14px;
}

.run-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.progress { color: var(--muted); font-size: .85rem; }

.hint { color: var(--muted); font-size: .82rem; margin: 6px 0; }
code { background: #eef1f5; padding: 1px 5px; border-radius: 4px; font-size: .85em; }

/* ---------- 結果バー ---------- */
.result-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.result-bar .spacer { flex: 1; }
.stat { font-size: .88rem; color: var(--muted); }

/* ---------- ワークスペース ---------- */
.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 18px;
  margin: 18px 0;
}
@media (max-width: 980px) {
  .workspace { grid-template-columns: 1fr; }
}
.col {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  min-width: 0;
}

.overlay-wrap { max-height: 72vh; overflow: auto; background: #eceef1; border-radius: 8px; padding: 8px; }
.page-box { margin-bottom: 14px; }
.page-cap { font-size: .78rem; color: var(--muted); margin-bottom: 4px; }
.page-holder { position: relative; line-height: 0; }
.page-img, .page-overlay { width: 100%; height: auto; display: block; }
.page-img { background: #fff; border: 1px solid var(--line); border-radius: 4px; }
.page-overlay { position: absolute; inset: 0; cursor: pointer; }

/* ---------- 編集パネル ---------- */
.edit-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
  padding: 12px;
  margin-bottom: 12px;
  min-height: 72px;
}
.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px 12px;
}
.panel-actions { display: flex; gap: 8px; margin-top: 12px; }

.note-list {
  max-height: 56vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  outline: none;
}
.note-list:focus { box-shadow: 0 0 0 2px rgba(31,111,235,.25); }

.measure { border-bottom: 1px dashed var(--line); padding: 6px 2px 8px; }
.measure:last-child { border-bottom: none; }
.measure-head { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 4px; }
.measure-num {
  font-weight: bold;
  font-size: .78rem;
  background: #eef1f5;
  border-radius: 4px;
  padding: 1px 7px;
  min-width: 26px;
  text-align: center;
}
.beat-badge { font-size: .72rem; color: var(--muted); }
.beat-badge.warn { color: var(--danger); font-weight: bold; }

.chips { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.chip {
  font-size: .8rem;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 5px;
  padding: 2px 8px;
  cursor: pointer;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: nowrap;
}
.chip.rest { background: #fdf6e3; border-color: #e6d9ae; color: #7a5f10; }
.chip.chord { border-left: 3px solid var(--accent); }
.chip.auto { opacity: .6; font-style: italic; }
.chip.selected {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
.chip:hover:not(.selected) { background: #eef4ff; }
.add-note { margin-left: 4px; }

/* ---------- プレビュー ---------- */
.preview-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.osmd { overflow-x: auto; background: #fff; }

.xml-source {
  width: 100%;
  height: 320px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .78rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  margin-top: 10px;
  background: #fbfcfd;
  color: var(--ink);
  resize: vertical;
}

.notes-card ul { margin: 0; padding-left: 1.3em; }
.notes-card li { margin-bottom: 6px; font-size: .9rem; }