:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1f2430;
  --muted: #7c8497;
  --accent: #3b6fd4;
  --alert: #d4643b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Yu Gothic UI", "Hiragino Sans", sans-serif;
  line-height: 1.6;
}

header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

h1 { margin: 0; font-size: 20px; }
h2 { margin: 0 0 12px; font-size: 15px; color: var(--muted); font-weight: 600; }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* ダッシュボード */
.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}

.stat-label { color: var(--muted); font-size: 13px; margin-right: auto; }
.stat-value { font-size: 26px; font-weight: 700; }
.stat-unit { color: var(--muted); font-size: 12px; }
.stat-alert .stat-value { color: var(--alert); }

/* 最新の振り返り（ダッシュボード下） */
.latest-review {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 24px;
}

.latest-review-label { color: var(--muted); font-size: 12px; }
.latest-review-body { margin-top: 4px; }
.latest-review-week { font-weight: 700; margin-right: 8px; }
.latest-review-comment { white-space: pre-wrap; word-break: break-word; }

/* レイアウト */
.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

/* 入力フォーム */
.form { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.form-inline { flex-direction: row; }
.form-inline input { flex: 1; }

.field { display: flex; align-items: center; gap: 8px; }
.field-label { color: var(--muted); font-size: 13px; white-space: nowrap; }

input, textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: inherit;
  resize: vertical;
}

input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }

button {
  font: inherit;
  font-weight: 600;
  padding: 8px 14px;
  border: none;
  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: 8px; }

.item {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.item-body { flex: 1; min-width: 0; }
.item-title { font-weight: 600; word-break: break-word; }
.item-text { color: #465065; white-space: pre-wrap; word-break: break-word; margin-top: 2px; }
.item-meta { color: var(--muted); font-size: 12px; margin-top: 4px; }

.item.done .item-title { text-decoration: line-through; color: var(--muted); }

.item input[type="checkbox"] { width: 17px; height: 17px; margin-top: 4px; accent-color: var(--accent); cursor: pointer; }

.delete {
  background: none;
  color: var(--muted);
  font-size: 18px;
  line-height: 1;
  padding: 2px 6px;
}
.delete:hover { color: var(--alert); filter: none; }

/* 1回目のクリック後、確認待ちの状態 */
.delete.armed {
  background: var(--alert);
  color: #fff;
  font-size: 12px;
  padding: 4px 8px;
}

.empty { color: var(--muted); font-size: 13px; padding: 8px 0; }

/* 通知 */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--alert);
  color: #fff;
  padding: 10px 18px;
  border-radius: 6px;
  font-size: 14px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

@media (max-width: 700px) {
  .columns { grid-template-columns: 1fr; }
  .dashboard { grid-template-columns: 1fr; }
}