:root {
  --bg: #f4f1f8;
  --panel: #ffffff;
  --ink: #29252f;
  --muted: #746f7c;
  --line: #ded8e6;
  --accent: #8d6fb2;
  --accent-dark: #705193;
  --accent-soft: #eee6f7;
  --danger: #b14d5c;
  --shadow: 0 10px 30px rgba(47, 34, 62, .12);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Yu Gothic UI", Meiryo, sans-serif; color: var(--ink); background: var(--bg); overflow: hidden; }
button, input, select { font: inherit; }
button { cursor: pointer; }
.topbar { height: 76px; background: #fff; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; padding: 0 22px; position: relative; z-index: 20; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; background: var(--accent); color: #fff; font-weight: 800; }
.brand h1 { margin: 0; font-size: 19px; letter-spacing: .02em; }
.brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.top-actions { display: flex; gap: 8px; }
button { border: 1px solid transparent; border-radius: 9px; padding: 9px 13px; background: #fff; color: var(--ink); }
button.primary { color: #fff; background: var(--accent); border-color: var(--accent); font-weight: 700; }
button.primary:hover { background: var(--accent-dark); }
button.ghost { border-color: var(--line); }
button.ghost:hover { background: #f6f3f8; }
button.small { padding: 7px 10px; font-size: 13px; }
button.full { width: 100%; }
button.danger-outline { color: var(--danger); border-color: #e2b9c0; background: #fff; }
button.danger-outline:hover { background: #fff3f5; }
button:disabled { opacity: .4; cursor: not-allowed; }
.app-shell { height: calc(100vh - 76px); display: grid; grid-template-columns: 270px minmax(620px, 1fr) 270px; }
.sidebar { background: var(--panel); overflow: auto; border-right: 1px solid var(--line); }
.right-panel { border-right: 0; border-left: 1px solid var(--line); }
.panel-section { padding: 18px; border-bottom: 1px solid var(--line); }
.panel-section h2 { font-size: 14px; margin: 0 0 13px; }
.panel-section label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0; }
.panel-section input[type="text"], .panel-section input[type="number"] { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; margin-top: 5px; color: var(--ink); background: #fff; }
.panel-section input:focus, .paper-footer input:focus { outline: 2px solid #cdbbe1; border-color: var(--accent); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.badge { background: var(--accent-soft); color: var(--accent-dark); border-radius: 99px; padding: 3px 8px; font-size: 11px; }
.add-student-row { display: grid; grid-template-columns: 1fr auto; gap: 7px; }
.add-student-row input { margin: 0 !important; }
.hint { color: var(--muted); font-size: 11px; line-height: 1.55; }
.student-list { display: flex; flex-direction: column; gap: 7px; margin-top: 12px; }
.student-item { display: grid; grid-template-columns: 1fr 30px 30px; gap: 5px; align-items: center; border: 1px solid var(--line); border-radius: 9px; padding: 6px; }
.student-add { text-align: left; padding: 7px 8px; border: 0; background: transparent; border-radius: 7px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.student-add:hover { background: var(--accent-soft); }
.icon-btn { padding: 5px; border: 0; background: transparent; border-radius: 6px; }
.icon-btn:hover { background: #f2eef5; }
.icon-btn.delete { color: var(--danger); }
.workspace-wrap { min-width: 0; display: grid; grid-template-rows: 48px 1fr 30px; background: #ebe7ef; }
.toolbar { display: flex; align-items: center; gap: 6px; background: #fff; border-bottom: 1px solid var(--line); padding: 6px 12px; flex-wrap: wrap; }
.tool { padding: 7px 10px; border-color: var(--line); font-size: 12px; }
.tool.active { color: #fff; background: var(--accent); border-color: var(--accent); }
.tool.danger { color: var(--danger); }
.toolbar-spacer { flex: 1; }
.zoom-label { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.zoom-label select { border: 1px solid var(--line); border-radius: 7px; padding: 5px; }
.workspace-scroller { overflow: auto; padding: 34px 40px 70px; }
.paper { --zoom: .82; width: calc(794px * var(--zoom)); height: calc(1123px * var(--zoom)); background: #fff; margin: 0 auto; box-shadow: var(--shadow); position: relative; transform-origin: top center; display: grid; grid-template-rows: calc(82px * var(--zoom)) 1fr calc(61px * var(--zoom)); }
.paper-header { padding: calc(18px * var(--zoom)) calc(24px * var(--zoom)) calc(12px * var(--zoom)); border-bottom: 1px solid #bbb; display: flex; justify-content: space-between; align-items: center; }
.paper-title { font-size: calc(16px * var(--zoom)); font-weight: 750; }
.paper-subtitle { font-size: calc(12px * var(--zoom)); margin-top: calc(4px * var(--zoom)); color: #555; }
.page-label { font-size: calc(12px * var(--zoom)); color: #666; }
.stage-area { position: relative; margin: calc(8px * var(--zoom)) calc(24px * var(--zoom)); overflow: hidden; user-select: none; touch-action: none; background-color: #fff; border: calc(1px * var(--zoom)) solid #222; box-sizing: border-box; }
.stage-area.grid-on { background-image: linear-gradient(to right, rgba(80,80,80,.16) 1px, transparent 1px), linear-gradient(to bottom, rgba(80,80,80,.16) 1px, transparent 1px); background-size: var(--grid-x) var(--grid-y); background-position: 0 0; }
.front-label { position: absolute; top: calc(4px * var(--zoom)); left: 50%; transform: translateX(-50%); font-size: calc(10px * var(--zoom)); z-index: 4; pointer-events: none; background: rgba(255,255,255,.9); padding: 0 calc(5px * var(--zoom)); }
.line-layer, .marker-layer { position: absolute; inset: 0; width: 100%; height: 100%; }
.line-layer { z-index: 1; overflow: visible; }
.marker-layer { z-index: 3; }
.marker { position: absolute; display: grid; place-items: center; border: calc(2px * var(--zoom)) solid #222; border-radius: 50%; background: #fff; font-weight: 700; line-height: 1.05; text-align: center; padding: calc(3px * var(--zoom)); cursor: grab; transform: translate(-50%, -50%); white-space: normal; overflow: hidden; word-break: keep-all; }
.marker:active { cursor: grabbing; }
.marker.selected { outline: calc(3px * var(--zoom)) solid rgba(141,111,178,.45); outline-offset: calc(2px * var(--zoom)); }
.draw-shape { fill: none; stroke: #222; vector-effect: non-scaling-stroke; pointer-events: stroke; }
.draw-shape.selected { stroke: var(--accent); filter: drop-shadow(0 0 2px rgba(112,81,147,.5)); }
.draw-preview { fill: rgba(141,111,178,.06); stroke: var(--accent); stroke-dasharray: 7 5; vector-effect: non-scaling-stroke; pointer-events: none; }
.paper-footer { border-top: 1px solid #bbb; display: flex; align-items: center; padding: calc(11px * var(--zoom)) calc(22px * var(--zoom)); }
.paper-footer input { width: 100%; border: 0; border-bottom: 1px solid #aaa; padding: calc(5px * var(--zoom)); font-size: calc(12px * var(--zoom)); }
.status-bar { display: flex; align-items: center; padding: 0 14px; font-size: 11px; color: var(--muted); background: #fff; border-top: 1px solid var(--line); }
.page-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; margin: 10px 0; }
.page-list { display: flex; flex-direction: column; gap: 6px; }
.page-item { width: 100%; border: 1px solid var(--line); background: #fff; display: grid; grid-template-columns: 29px 1fr; align-items: center; gap: 8px; text-align: left; padding: 8px; }
.page-item.active { border-color: var(--accent); background: var(--accent-soft); }
.page-number { width: 25px; height: 25px; display: grid; place-items: center; border-radius: 7px; background: #f0ecf3; font-size: 11px; }
.page-name { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 12px; }
.check-row { display: flex !important; gap: 8px; align-items: center; color: var(--ink) !important; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.tips ol { margin: 0; padding-left: 20px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 20px); background: #2f2935; color: #fff; padding: 10px 16px; border-radius: 9px; opacity: 0; pointer-events: none; transition: .22s; z-index: 50; font-size: 13px; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
@media (max-width: 1100px) { .app-shell { grid-template-columns: 240px minmax(560px, 1fr) 240px; } .top-actions button { padding: 8px 9px; font-size: 12px; } }

/* V1.1: スクロールと保存一覧 */
.workspace-scroller {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  touch-action: pan-x pan-y;
  min-height: 0;
  scrollbar-gutter: stable;
}
.sidebar {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  min-height: 0;
}
.modal-backdrop[hidden] { display: none; }
.modal-backdrop { position: fixed; inset: 0; z-index: 100; background: rgba(35,29,42,.45); display: grid; place-items: center; padding: 24px; }
.modal { width: min(760px, 94vw); max-height: 82vh; overflow: hidden; background: #fff; border-radius: 16px; box-shadow: 0 24px 70px rgba(30,20,40,.28); display: grid; grid-template-rows: auto 1fr; }
.modal-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 20px 22px 16px; border-bottom: 1px solid var(--line); }
.modal-header h2 { margin: 0; font-size: 18px; }
.modal-header p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.icon-close { width: 38px; height: 38px; padding: 0; border: 1px solid var(--line); font-size: 23px; line-height: 1; }
.saved-project-list { overflow: auto; padding: 14px 18px 20px; -webkit-overflow-scrolling: touch; }
.saved-empty { padding: 42px 18px; text-align: center; color: var(--muted); }
.saved-card { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 14px; align-items: center; padding: 14px; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; }
.saved-card.current { border-color: var(--accent); background: #fbf9fd; }
.saved-info { min-width: 0; }
.saved-title { font-weight: 750; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.saved-meta { margin-top: 5px; color: var(--muted); font-size: 11px; }
.saved-actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 760px) { .saved-card { grid-template-columns: 1fr; } .saved-actions { justify-content: flex-start; } }

/* V1.2: 常時表示するスクロールバー */
.app-shell,
.workspace-wrap,
.workspace-scroller {
  min-height: 0;
  min-width: 0;
}
.workspace-scroller {
  overflow: scroll !important;
  position: relative;
  scrollbar-width: auto;
  scrollbar-color: #8d6fb2 #d9d3df;
  padding-right: 54px;
  padding-bottom: 86px;
}
.workspace-scroller::-webkit-scrollbar {
  width: 18px;
  height: 18px;
  -webkit-appearance: none;
}
.workspace-scroller::-webkit-scrollbar-track {
  background: #d9d3df;
  border: 1px solid #c6bdcf;
}
.workspace-scroller::-webkit-scrollbar-thumb {
  background: #8d6fb2;
  border: 3px solid #d9d3df;
  border-radius: 10px;
  min-height: 42px;
}
.workspace-scroller::-webkit-scrollbar-thumb:hover {
  background: #705193;
}
.workspace-scroller::-webkit-scrollbar-corner {
  background: #d9d3df;
}

/* 画面が低い時も用紙の下まで確実に移動できる余白 */
.paper { flex: 0 0 auto; }

.line-control-group { display:flex; align-items:center; gap:8px; padding-left:8px; border-left:1px solid var(--line); }
.line-control-group label { display:flex; align-items:center; gap:5px; font-size:11px; color:var(--muted); }
.line-control-group select { border:1px solid var(--line); border-radius:7px; padding:5px 7px; background:#fff; color:var(--ink); }

/* V1.5 追加文字アイテム */
.add-text-block label { margin-bottom: 12px; }
.add-text-block .add-student-row { margin-top: 5px; }
.text-item { position:absolute; left:50%; top:50%; transform:translate(-50%,-50%) rotate(var(--rotation,0deg)); transform-origin:center; cursor:grab; user-select:none; z-index:4; color:#111; font-weight:600; line-height:1.2; white-space:pre-wrap; max-width:90%; text-align:center; padding:calc(4px * var(--zoom)) calc(7px * var(--zoom)); }
.text-item:active { cursor:grabbing; }
.text-item.song { text-decoration:underline; text-decoration-thickness:calc(1.5px * var(--zoom)); text-underline-offset:calc(3px * var(--zoom)); }
.text-item.number { border:calc(2px * var(--zoom)) solid #222; min-width:calc(34px * var(--zoom)); min-height:calc(34px * var(--zoom)); display:grid; place-items:center; padding:calc(4px * var(--zoom)) calc(8px * var(--zoom)); }
.text-item.comment { font-weight:500; }
.text-item.selected { outline:calc(3px * var(--zoom)) solid rgba(141,111,178,.5); outline-offset:calc(3px * var(--zoom)); }
.value-badge { float:right; color:var(--accent-dark); font-weight:700; }

.comment-copy-actions { margin-top: 9px; }
.comment-copy-actions button:disabled { opacity: .45; cursor: not-allowed; }

/* V2 Cloud */
.cloud-status{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;font-size:12px;font-weight:700;white-space:nowrap;border:1px solid #ddd;background:#fff;color:#555}.cloud-status::before{content:"";width:8px;height:8px;border-radius:50%;background:#aaa}.cloud-status.ok{color:#176b45;border-color:#b9e4cf;background:#effbf5}.cloud-status.ok::before{background:#2aae72}.cloud-status.connecting{color:#6d57a5;border-color:#d9cff0;background:#f7f3ff}.cloud-status.connecting::before{background:#8064bf;animation:cloudPulse 1.2s infinite}.cloud-status.error{color:#a33b3b;border-color:#efc4c4;background:#fff4f4}.cloud-status.error::before{background:#d9534f}@keyframes cloudPulse{50%{opacity:.25}}
.saved-cloud-note{font-size:12px;color:#6b5b91;margin:0 0 12px;padding:8px 10px;background:#f7f3ff;border-radius:8px}