:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1f2933;
  --muted: #6b7684;
  --line: #e3e8ef;
  --accent: #1a73e8;
  --danger: #d93025;
  /* カレンダーの色分け */
  --cal-line: #dadce0;
  --cal-memo: #1a73e8;
  --cal-task: #f4511e;
  --cal-task-done: #0b8043;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px 16px 64px;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, sans-serif;
  line-height: 1.6;
}

main, .page-header { max-width: 1040px; margin: 0 auto; }

.page-header h1 { margin: 0; font-size: 24px; }
.subtitle { margin: 4px 0 20px; color: var(--muted); font-size: 14px; }

/* ダッシュボード */
.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}
.stat-accent { border-color: var(--accent); }
.stat-label { display: block; font-size: 13px; color: var(--muted); }
.stat-value { display: block; font-size: 32px; font-weight: 700; margin-top: 4px; }
.stat-accent .stat-value { color: var(--accent); }

/* レイアウト */
.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
}
.card h2 { font-size: 15px; margin: 0 0 12px; }
.list-heading { margin-top: 28px !important; display: flex; align-items: baseline; gap: 8px; }
.count { font-size: 12px; font-weight: 400; color: var(--muted); }

/* 入力欄 */
.form { display: flex; flex-direction: column; gap: 8px; }
.form-row { flex-direction: row; }
.form-row input { flex: 1; }

input, textarea {
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: inherit;
  width: 100%;
}
textarea { resize: vertical; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

button {
  font: inherit;
  font-weight: 600;
  padding: 9px 16px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  white-space: nowrap;
}
button:hover { filter: brightness(1.08); }

/* 一覧 */
.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
}
.item-title { font-weight: 600; word-break: break-word; }
.item-body { margin-top: 4px; white-space: pre-wrap; word-break: break-word; font-size: 14px; }
.item-meta { margin-top: 6px; font-size: 12px; color: var(--muted); }
.empty { color: var(--muted); font-size: 14px; padding: 8px 0; }

/* メモの操作ボタン */
.item-head { display: flex; align-items: flex-start; gap: 10px; }
.item-head .item-title { flex: 1; min-width: 0; }
.item-actions { display: flex; gap: 6px; flex: none; }
.item-editing { border-color: var(--accent); }
.item-editing .item-actions { margin-top: 2px; }
.sub-btn {
  background: none;
  color: var(--accent);
  border: 1px solid var(--line);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
}
.sub-btn:hover { background: #eef3fe; filter: none; }

/* タスク */
.task { display: flex; align-items: flex-start; gap: 10px; }
.task-check { width: 18px; height: 18px; margin-top: 3px; flex: none; cursor: pointer; }
.task-main { flex: 1; min-width: 0; }
.task.done .item-title { text-decoration: line-through; color: var(--muted); }
.badge {
  display: inline-block;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  margin-left: 6px;
}
.badge-done { color: #1a7f4b; border-color: #b7e2c8; background: #eefaf2; }
.badge-open { color: #a8600a; border-color: #f2d9ac; background: #fdf6e9; }
.delete-btn {
  background: none;
  color: var(--danger);
  border: 1px solid var(--line);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
}
.delete-btn:hover { background: #fdecec; filter: none; }
/* 2回目のクリックで実際に削除するボタン */
.confirm-btn { background: var(--danger); color: #fff; border-color: var(--danger); }
.confirm-btn:hover { background: #c23a3a; }

/* トースト */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: #1f2933;
  color: #fff;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
}

@media (max-width: 760px) {
  .columns { grid-template-columns: 1fr; }
  .dashboard { grid-template-columns: 1fr; }
}

/* ===================== カレンダー ===================== */

.calendar-card { padding: 12px 12px 8px; margin-bottom: 16px; }

.cal-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 4px 4px 12px;
}
.cal-nav { display: flex; align-items: center; gap: 6px; }
.cal-title { font-size: 20px; font-weight: 400; margin: 0 0 0 8px; color: var(--text); }

.cal-arrow {
  background: none;
  color: var(--muted);
  border: 0;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  padding: 0;
  font-size: 22px;
  line-height: 1;
}
.cal-arrow:hover { background: #f1f3f4; filter: none; }

.cal-views { display: flex; border: 1px solid var(--cal-line); border-radius: 6px; overflow: hidden; }
.cal-view-btn {
  background: #fff;
  color: var(--text);
  border: 0;
  border-left: 1px solid var(--cal-line);
  border-radius: 0;
  padding: 7px 18px;
  font-weight: 500;
  font-size: 13px;
}
.cal-view-btn:first-child { border-left: 0; }
.cal-view-btn:hover { background: #f1f3f4; filter: none; }
.cal-view-btn.is-active { background: #e8f0fe; color: var(--accent); }

/* 月ビュー */
.cal-weekhead, .cal-month-grid { display: grid; grid-template-columns: repeat(7, 1fr); }
.cal-weekhead-cell {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  padding: 6px 0;
  border-bottom: 1px solid var(--cal-line);
}
.cal-weekhead-cell.is-sun { color: #d93025; }
.cal-weekhead-cell.is-sat { color: #1a73e8; }

.cal-month-grid {
  grid-template-rows: repeat(var(--weeks), minmax(96px, 1fr));
  border-left: 1px solid var(--cal-line);
}
.cal-cell {
  border-right: 1px solid var(--cal-line);
  border-bottom: 1px solid var(--cal-line);
  padding: 2px 4px 6px;
  min-width: 0;
  overflow: hidden;
}
.cal-cell.is-other-month { background: #f8f9fa; }
.cal-cell.is-other-month .cal-daynum { color: #b0b4b8; }
.cal-cell-head { display: flex; justify-content: center; }

.cal-daynum {
  background: none;
  color: var(--text);
  border: 0;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 8px;
  min-width: 24px;
  line-height: 1.2;
}
.cal-daynum:hover { background: #f1f3f4; filter: none; }
.cal-daynum.is-today { background: var(--accent); color: #fff; }
.cal-daynum.is-today:hover { background: #1765cc; }
.cal-daynum-lg { font-size: 20px; font-weight: 400; padding: 4px 10px; }

.cal-cell-events { display: flex; flex-direction: column; gap: 2px; margin-top: 2px; }

.cal-chip {
  display: flex;
  align-items: baseline;
  gap: 4px;
  width: 100%;
  text-align: left;
  border: 0;
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 11px;
  font-weight: 500;
  color: #fff;
  background: var(--cal-memo);
  overflow: hidden;
}
.cal-chip:hover { filter: brightness(0.92); }
.cal-chip-time { font-weight: 400; opacity: 0.85; flex: none; }
.cal-chip-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cal-chip.is-task { background: var(--cal-task); }
.cal-chip.is-task-done { background: var(--cal-task-done); }
.cal-chip.is-task-done .cal-chip-title { text-decoration: line-through; }

.cal-more {
  background: none;
  color: var(--muted);
  border: 0;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  text-align: left;
  padding: 2px 6px;
}
.cal-more:hover { background: #f1f3f4; filter: none; }

/* 週 / 日ビュー */
.cal-grid-row { display: grid; grid-template-columns: 56px repeat(var(--days), 1fr); }

.cal-dayhead { border-bottom: 1px solid var(--cal-line); }
.cal-dayhead-cell { text-align: center; padding: 4px 0 8px; border-left: 1px solid var(--cal-line); }
.cal-dayhead-wd { font-size: 11px; color: var(--muted); }
.cal-dayhead-wd.is-sun { color: #d93025; }
.cal-dayhead-wd.is-sat { color: #1a73e8; }

.cal-allday { border-bottom: 1px solid var(--cal-line); min-height: 32px; }
.cal-allday-label { font-size: 10px; color: var(--muted); text-align: right; padding: 6px 8px 0 0; }
.cal-allday-col {
  border-left: 1px solid var(--cal-line);
  padding: 4px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.cal-scroll { max-height: 480px; overflow-y: auto; }
.cal-gutter-slot {
  height: var(--hour-height);
  font-size: 10px;
  color: var(--muted);
  text-align: right;
  padding-right: 8px;
  transform: translateY(-6px);
}
.cal-daycol { position: relative; border-left: 1px solid var(--cal-line); min-width: 0; }
.cal-daycol.is-today { background: #fdfdff; }
.cal-hourline { height: var(--hour-height); border-bottom: 1px solid #ebedf0; }

.cal-event {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 1px;
  overflow: hidden;
  text-align: left;
  border: 1px solid #fff;
  border-radius: 4px;
  padding: 2px 5px;
  font-size: 11px;
  font-weight: 500;
  color: #fff;
  background: var(--cal-memo);
  line-height: 1.25;
}
.cal-event:hover { filter: brightness(0.92); }
.cal-event.is-task { background: var(--cal-task); }
.cal-event.is-task-done { background: var(--cal-task-done); }
.cal-event.is-task-done .cal-event-title { text-decoration: line-through; }
.cal-event-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cal-event-time { font-weight: 400; opacity: 0.85; }

.cal-now { position: absolute; left: 0; right: 0; height: 2px; background: #ea4335; z-index: 2; }
.cal-now::before {
  content: '';
  position: absolute;
  left: -5px;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ea4335;
}

/* 凡例 */
.cal-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin: 10px 4px 4px;
  font-size: 11px;
  color: var(--muted);
}
.cal-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cal-memo); margin-left: 8px; }
.cal-dot:first-child { margin-left: 0; }
.cal-dot.is-task { background: var(--cal-task); }
.cal-dot.is-task-done { background: var(--cal-task-done); }
.cal-legend-note { margin-left: auto; }

/* 予定の詳細ポップアップ */
.cal-popover {
  position: absolute;
  z-index: 20;
  width: min(320px, calc(100vw - 24px));
  background: var(--card);
  border: 1px solid var(--cal-line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  padding: 12px 14px 14px;
}
.cal-pop-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.cal-pop-badge {
  font-size: 11px;
  font-weight: 600;
  color: #fff;
  background: var(--cal-memo);
  border-radius: 999px;
  padding: 2px 10px;
}
.cal-pop-badge.is-task { background: var(--cal-task); }
.cal-pop-badge.is-task-done { background: var(--cal-task-done); }
.cal-pop-close {
  background: none;
  color: var(--muted);
  border: 0;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  padding: 0;
  font-size: 18px;
  line-height: 1;
}
.cal-pop-close:hover { background: #f1f3f4; filter: none; }
.cal-pop-title { font-size: 15px; font-weight: 600; margin-top: 8px; word-break: break-word; }
.cal-pop-meta { font-size: 12px; color: var(--muted); margin-top: 4px; }
.cal-pop-body {
  font-size: 13px;
  margin-top: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 160px;
  overflow-y: auto;
}
.cal-pop-actions { margin-top: 12px; }
.cal-pop-due { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.cal-pop-due input { width: auto; flex: none; padding: 5px 8px; font-size: 13px; }

/* 期日 */
.due-label { font-size: 12px; color: var(--muted); flex: none; }
.form-row { align-items: center; }
.form-row input[type="date"] { width: auto; flex: none; }
.task-due.is-overdue { color: var(--danger); font-weight: 600; }

@media (max-width: 760px) {
  .cal-toolbar { justify-content: flex-start; }
  .cal-title { font-size: 17px; }
  .cal-month-grid { grid-template-rows: repeat(var(--weeks), minmax(72px, 1fr)); }
  /* 幅が狭いときは時刻を省いてタイトルを読めるようにする */
  .cal-view-month .cal-chip-time { display: none; }
  .cal-cell { padding: 2px 2px 4px; }
  .form-row { flex-wrap: wrap; }
}