@import url('https://fonts.googleapis.com/css2?family=M+PLUS+Rounded+1c:wght@700;800&display=swap');

:root {
  --accent: #3a7bd5;
  --border: #ddd;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Hiragino Kaku Gothic Pro', 'Meiryo', sans-serif;
  background: #f0f2f5; color: #222;
}

/* ===== アプリレイアウト ===== */
.app { display: flex; height: 100vh; overflow: hidden; }

.panel {
  width: 260px; min-width: 220px;
  background: #fff; border-right: 1px solid #ddd;
  padding: 16px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 12px;
  flex-shrink: 0;
}
.panel h2 { font-size: 14px; font-weight: 700; color: #555; letter-spacing: .05em; }
.panel-section { display: flex; flex-direction: column; gap: 6px; }
.panel-section label { font-size: 13px; font-weight: 600; color: #333; }
.panel-section select { width: 100%; padding: 6px 8px; border: 1px solid #ccc; border-radius: 6px; font-size: 13px; background: #fafafa; }
.panel-section select:focus { outline: none; border-color: var(--accent); }

.toggle-row { display: flex; align-items: center; justify-content: space-between; }
.toggle-row span { font-size: 13px; }
.toggle { position: relative; width: 40px; height: 22px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; inset: 0; background: #ccc; border-radius: 22px; cursor: pointer; transition: background .2s; }
.slider::before { content: ''; position: absolute; left: 3px; top: 3px; width: 16px; height: 16px; background: #fff; border-radius: 50%; transition: transform .2s; }
.toggle input:checked + .slider { background: var(--accent); }
.toggle input:checked + .slider::before { transform: translateX(18px); }

.btn { width: 100%; padding: 9px; border: none; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; transition: opacity .15s; }
.btn:hover { opacity: .85; }
.btn-primary { background: var(--accent); color: #fff; }

.divider { border: none; border-top: 1px solid #eee; }

.check-group { display: flex; flex-direction: column; gap: 5px; }
.check-row { display: flex; align-items: center; gap: 7px; font-size: 13px; cursor: pointer; user-select: none; }
.check-row input[type=checkbox] { width: 15px; height: 15px; cursor: pointer; accent-color: var(--accent); flex-shrink: 0; }

/* 時の固定設定 */
.hour-row { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.hour-row input[type=radio] { accent-color: var(--accent); cursor: pointer; }
#fixedHourSelect { width: 70px; padding: 4px 6px; border: 1px solid #ccc; border-radius: 6px; font-size: 13px; }

/* ── 右上ナビ ── */
.top-btns { position: fixed; top: 16px; right: 20px; z-index: 200; display: flex; gap: 8px; }
.top-btn { padding: 8px 18px; border: none; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer; box-shadow: 0 2px 8px rgba(0,0,0,.18); transition: opacity .15s, transform .1s; }
.top-btn:hover   { opacity: .88; }
.top-btn:active  { transform: translateY(1px); }
.top-btn:disabled { opacity: .4; cursor: default; transform: none; }
.top-btn-settings { background: #fff; color: #333; }
.top-btn-settings.current { background: #e8edf2; color: #555; box-shadow: none; cursor: default; }
.top-btn-preview  { background: #e67e22; color: #fff; }
.top-btn-print    { background: #27ae60; color: #fff; }
.top-btn-answer   { background: #f0f2f5; color: #333; }
.top-btn-answer.active { background: #2ecc71; color: #fff; }
@media print { .top-btns { display: none; } }

/* ── プレビューエリア ── */
.preview-area { flex: 1; overflow: auto; padding: 24px; display: flex; flex-direction: column; align-items: center; }

/* ── シートラッパー（ズーム用） ── */
.sheet-wrapper { flex-shrink: 0; }

/* ── シートコンテナ（複数枚） ── */
#sheetsContainer { display: flex; flex-direction: column; align-items: center; gap: 20px; }

/* ── プリントシート（横向きA4）── */
.print-sheet {
  background: #fff;
  width: 297mm; height: 210mm; overflow: hidden;
  padding: 6mm 10mm;
  box-shadow: 0 2px 12px rgba(0,0,0,.12);
  display: flex; flex-direction: column;
  transform-origin: top left;
}

.sheet-header { display: flex; align-items: flex-end; gap: 10px; margin-bottom: 3mm; flex-shrink: 0; }

.sheet-instruction {
  flex: 2;
  font-size: 13px; line-height: 1.6; color: #222;
  outline: none; white-space: pre-wrap; min-width: 30mm;
  border-bottom: 1px dashed #ccc; padding-bottom: 2px;
  align-self: flex-end;
}
.sheet-instruction:empty::before { content: attr(data-placeholder); color: #bbb; }
@media print {
  .sheet-instruction { border: none; padding: 0; }
  .sheet-instruction.print-hide { display: none; }
}
.sheet-title {
  flex: 1; min-width: 40mm; outline: none;
  font-family: 'M PLUS Rounded 1c', 'Hiragino Maru Gothic Pro', sans-serif;
  font-size: 28px; font-weight: 800;
}
.sheet-title[contenteditable="true"]:empty::before { content: attr(data-placeholder); color: #ccc; }
.header-field { display: flex; align-items: flex-end; gap: 4px; font-size: 16px; white-space: nowrap; }
.header-field .line { display: inline-block; width: 60px; border-bottom: 1px solid #333; }
.header-field .name-line { width: 60mm; }

/* ── 時計グリッド ── */
.clocks-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0mm 3mm;
  align-content: space-evenly;
  align-items: center;
}

.clock-problem {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1mm;
}

.clock-face {
  width: min(78mm, 100%);
  aspect-ratio: 1;
}
.clock-face svg { width: 100%; height: 100%; }

/* ── 答え欄 ── */
.answer-blank {
  font-size: 22px; font-weight: 600; letter-spacing: .05em;
  display: flex; align-items: flex-end; gap: 3px;
  white-space: nowrap;
}
.answer-blank ruby { display: inline-flex; flex-direction: column-reverse; align-items: center; }
.answer-blank rt { font-size: 0.65em; font-weight: 400; letter-spacing: 0; line-height: 1; }
.ans-blank-h {
  display: inline-block; width: 2.8em; border-bottom: 2px solid #333;
  vertical-align: bottom; margin: 0 3px;
}
.ans-blank-m {
  display: inline-block; width: 3.2em; border-bottom: 2px solid #333;
  vertical-align: bottom; margin: 0 3px;
}
.ans-val { color: #e8786a; font-weight: 700; margin: 0 3px; }

/* ── 印刷 ── */
@page { size: A4 landscape; margin: 0; }
@media print {
  body { background: #fff; }
  .app { display: block; height: auto; }
  .panel { display: none; }
  .preview-area { padding: 0; overflow: visible; display: block; }
  .sheet-wrapper { width: auto !important; height: auto !important; }
  .print-sheet { box-shadow: none; transform: none !important; margin: 0; width: 297mm; height: 210mm; overflow: visible; padding: 6mm 10mm; page-break-after: always; }
  #sheetsContainer { gap: 0; }
  .print-sheet:last-child { page-break-after: avoid; }
  .no-print { display: none !important; }
}

/* ── ズームバー ── */
.zoom-bar {
  position: fixed; bottom: 20px; right: 24px; z-index: 150;
  display: flex; align-items: center; gap: 1px;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0,0,0,.10);
  border-radius: 20px;
  padding: 3px 5px;
  box-shadow: 0 2px 10px rgba(0,0,0,.10);
  opacity: .55;
  transition: opacity .2s;
  user-select: none;
}
.zoom-bar:hover { opacity: 1; }
.zoom-btn {
  width: 26px; height: 26px; border: none; border-radius: 13px;
  background: transparent; font-size: 15px; font-weight: 700;
  color: #444; cursor: pointer; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background .12s;
}
.zoom-btn:hover { background: rgba(0,0,0,.07); }
.zoom-reset {
  min-width: 42px; border: none; border-radius: 4px;
  background: transparent; font-size: 12px; font-weight: 600;
  color: #555; cursor: pointer; padding: 2px 4px;
  transition: background .12s; border-left: 1px solid rgba(0,0,0,.09); margin-left: 2px; padding-left: 7px;
}
.zoom-reset:hover { background: rgba(0,0,0,.07); }
.zoom-slider {
  -webkit-appearance: none; appearance: none;
  width: 90px; height: 3px;
  background: rgba(0,0,0,.18); border-radius: 2px;
  outline: none; cursor: pointer;
  margin: 0 2px;
}
.zoom-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 13px; height: 13px; border-radius: 50%;
  background: #3a7bd5;
  box-shadow: 0 1px 3px rgba(58,123,213,.4);
  transition: transform .1s;
}
.zoom-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }
.zoom-slider::-moz-range-thumb {
  width: 13px; height: 13px; border-radius: 50%; border: none;
  background: #3a7bd5; box-shadow: 0 1px 3px rgba(58,123,213,.4);
}
@media print { .zoom-bar { display: none; } }
.ans-val { color: #e25c4a; font-weight: 700; }
@media print { .ans-val { color: #e25c4a !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; } }