/* 色・書体はここに集める（docs/screens.md デザイントークン。変更はA区分） */
:root {
  --bg: #121417;
  --panel: #1b1f24;
  --line: #2c323a;
  --fg: #e8eaed;
  --muted: #9aa0a6;
  --accent: #4fc3a1;
  --accent-fg: #0b1f19;
  --warn: #f2b84b;
  --error: #ff7a7a;
  --key-white: #e9e6df;
  --key-white-down: #9fdcc9;
  --key-black: #22262c;
  --key-black-down: #2f8f74;
  /* 書体B（UDゴシック系）に決定（2026-10-15、発案者）。Android には BIZ UDPゴシック が無いので、OS標準の日本語書体になる */
  --font: "BIZ UDPGothic", "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}
h1, h2 { font-weight: 600; margin: 0; }
h1 { font-size: 1.15rem; }
h2 { font-size: 0.95rem; color: var(--muted); margin-bottom: 8px; }
button, select, input { font: inherit; color: inherit; }

.app-header, .app-footer {
  display: flex; align-items: baseline; justify-content: space-between; gap: 12px;
  padding: 12px 16px;
}
.app-footer { color: var(--muted); font-size: 0.85rem; flex-wrap: wrap; }
.app-footer a { color: var(--muted); }
.app-header { align-items: center; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark { width: 44px; height: 44px; flex: none; display: block; }
.brand-text { min-width: 0; }
.brand-text h1 { font-size: 1.3rem; line-height: 1.2; letter-spacing: 0.02em; }
.brand-sub { margin: 2px 0 0; font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.12em; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app-header .version { white-space: nowrap; }
@media (max-width: 480px) { .brand-sub-long { display: none; } }
.tentative { font-weight: 400; color: var(--muted); font-size: 0.85rem; }
.version { color: var(--muted); font-size: 0.85rem; font-family: var(--mono); }

.app {
  display: grid; gap: 12px; padding: 0 16px;
  grid-template-columns: 1fr;
  max-width: 1100px; margin: 0 auto;
}
@media (min-width: 760px) {
  .app { grid-template-columns: 1fr 1fr; }
  .start, .keyboard-panel, .channels { grid-column: 1 / -1; }
}
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; min-width: 0; }
.row { display: flex; align-items: center; gap: 12px; }
.note { color: var(--muted); font-size: 0.85rem; margin: 8px 0 0; }

.start-button {
  width: 100%; padding: 14px; border: 0; border-radius: 8px;
  background: var(--accent); color: var(--accent-fg); font-weight: 600; font-size: 1.1rem; cursor: pointer;
}
.start-button.running { background: var(--line); color: var(--fg); }
.start-button:disabled { opacity: 0.6; cursor: progress; }
button.small {
  padding: 6px 10px; border-radius: 6px; border: 1px solid var(--line); background: transparent; cursor: pointer;
}
button.small:disabled { opacity: 0.4; cursor: default; }

.status dl { margin: 0; display: grid; gap: 4px; }
.status dl > div { display: grid; grid-template-columns: 6.5em 1fr; gap: 8px; }
.status dt { color: var(--muted); }
.status dd { margin: 0; }
.warn { color: var(--warn); }
.error { color: var(--error); margin: 8px 0 0; }

.volume input[type="range"] { flex: 1; accent-color: var(--accent); }
.volume output { font-family: var(--mono); min-width: 3em; text-align: right; }

.wave-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.wave-buttons button {
  display: grid; justify-items: center; gap: 2px;
  padding: 6px 8px; border-radius: 8px; border: 1px solid var(--line); background: transparent; cursor: pointer;
  font-size: 0.8rem; min-width: 58px;
}
.wave-buttons button[aria-checked="true"] { border-color: var(--accent); background: rgba(79, 195, 161, 0.15); }
.wave-buttons svg { width: 48px; height: 24px; }
.wave-buttons polyline { fill: none; stroke: var(--accent); stroke-width: 1.5; }

.channels table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.channels th { text-align: left; color: var(--muted); font-weight: 400; padding: 2px 6px; }
.channels td { padding: 4px 6px; border-top: 1px solid var(--line); font-family: var(--mono); white-space: nowrap; }
.channels td.key-on { color: var(--accent); }
.vol-bar { display: inline-block; height: 8px; background: var(--accent); border-radius: 2px; vertical-align: middle; margin-left: 6px; }

.octave { justify-content: space-between; margin-bottom: 8px; font-family: var(--mono); font-size: 0.9rem; }
.keyboard {
  position: relative; height: 150px; touch-action: none; user-select: none; -webkit-user-select: none;
  -webkit-touch-callout: none; /* iOS の長押しメニューを出さない */
  -webkit-tap-highlight-color: transparent;
}
.keyboard * { user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.keyboard[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }
.keyboard .key { position: absolute; top: 0; border: 1px solid #0006; border-radius: 0 0 5px 5px; }
.keyboard .white { height: 100%; background: var(--key-white); z-index: 1; }
.keyboard .black { height: 60%; background: var(--key-black); z-index: 2; }
.keyboard .white.down { background: var(--key-white-down); }
.keyboard .black.down { background: var(--key-black-down); }
.keyboard .label { position: absolute; bottom: 4px; left: 0; right: 0; text-align: center; font-size: 0.7rem; color: #555; pointer-events: none; }
select { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 2px 4px; }
.octave button { white-space: nowrap; }
.notice-page { padding: 16px; }
.notice-page a { color: var(--accent); }
.notice-page pre { white-space: pre-wrap; word-break: break-word; font-family: var(--mono); font-size: 0.8rem; }
.kb-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.kb-head h2 { margin-bottom: 0; }
.kb-status { margin: 0; font-family: var(--mono); font-size: 0.8rem; color: var(--muted); }
.kb-status strong { color: var(--fg); font-weight: 600; }
.mini-button { font-size: 0.75rem; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
.app-banner { background: #3a2a10; color: var(--fg); border-bottom: 1px solid var(--warn); padding: 10px 16px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.app-banner p { margin: 0; flex: 1; min-width: 200px; }
.app-banner button { padding: 6px 12px; border-radius: 6px; border: 1px solid var(--warn); background: transparent; color: var(--warn); cursor: pointer; }
.channel-count { margin-top: 10px; flex-wrap: wrap; }
.channel-count label { color: var(--muted); }
.channel-count .note { margin: 0; flex-basis: 100%; }
.song-panel { grid-column: 1 / -1; }
.song-title { margin: 6px 0; font-weight: 600; }
.song-log { white-space: pre-wrap; font-family: var(--mono); font-size: 0.8rem; color: var(--muted); background: var(--bg); border-radius: 6px; padding: 6px; margin: 8px 0 0; }
.song-panel a { color: var(--accent); }
.song-steps { list-style: none; counter-reset: step; padding: 0; margin: 8px 0; display: grid; gap: 8px; }
.song-steps li { counter-increment: step; display: grid; grid-template-columns: 1.8em minmax(0, 1fr) auto; gap: 2px 10px; align-items: center; padding: 8px; border: 1px solid var(--line); border-radius: 8px; }
.song-steps li::before { content: counter(step); grid-row: 1 / span 2; width: 1.6em; height: 1.6em; border-radius: 50%; background: var(--line); display: grid; place-items: center; font-weight: 600; font-size: 0.85rem; }
.song-steps .step-name { font-weight: 600; }
.song-steps .step-name small { display: block; font-weight: 400; color: var(--muted); font-size: 0.8rem; }
.song-steps .file-button { grid-row: 1 / span 2; grid-column: 3; display: inline-block; }
.song-steps .step-status { grid-column: 2; font-size: 0.85rem; color: var(--muted); }
.song-steps .step-status.ok { color: var(--accent); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); border: 0; }
.file-button { cursor: pointer; }
.file-button { padding: 6px 14px; border-radius: 6px; border: 1px solid var(--accent); color: var(--accent); background: transparent; font-size: 0.9rem; white-space: nowrap; }
.file-button:hover { background: rgba(79, 195, 161, 0.12); }
#song-play:not(:disabled) { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); font-weight: 600; }
.song-panel .row { flex-wrap: wrap; }
.song-panel .row button { white-space: nowrap; }
.wave-editor-panel { grid-column: 1 / -1; }
.wave-editor { touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
/* 鍵盤と一緒に画面に収まるよう、高さを抑える（横に伸ばして描く） */
.wave-editor-svg { width: 100%; max-width: 640px; height: 200px; display: block; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; cursor: crosshair; }
.wave-editor-bar { fill: var(--accent); }
.wave-editor-axis { stroke: var(--line); stroke-width: 1; }
.wave-editor-tools { flex-wrap: wrap; margin: 8px 0; }
.we-text-box summary { cursor: pointer; color: var(--muted); font-size: 0.9rem; }
.we-text-box[open] summary { margin-bottom: 4px; }
#we-message:empty { display: none; }
.we-text-label { display: block; color: var(--muted); font-size: 0.85rem; margin-top: 4px; }
.we-text { width: 100%; max-width: 640px; background: var(--bg); color: var(--fg); border: 1px solid var(--line); border-radius: 6px; font-family: var(--mono); font-size: 0.85rem; padding: 6px; margin: 4px 0; }
.kb-part { margin-bottom: 8px; flex-wrap: wrap; }
.kb-part label { color: var(--muted); }
.kb-part .note { margin: 0; }
.part-rows { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px 12px; }
.part-rows label { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.part-rows .part-name { color: var(--muted); font-size: 0.9rem; white-space: nowrap; }
.part-rows .part-drum { color: var(--muted); font-size: 0.9rem; }
.copyright { font-size: 0.75rem; color: var(--muted); opacity: 0.8; }