:root {
  color-scheme: light dark;

  --bg: #eef1f6;
  --panel: #ffffff;
  --field: #ffffff;
  --text: #14161c;
  --muted: #545c6b;
  --border: #ccd2de;
  --border-strong: #aab3c2;
  --accent: #1f56c9;
  --accent-text: #ffffff;
  --danger: #b3261e;

  --badge-open-bg: #fdf0d5;
  --badge-open-text: #7a4a00;
  --badge-open-border: #e8cb92;
  --badge-done-bg: #dcf2e3;
  --badge-done-text: #10592f;
  --badge-done-border: #9ed3b2;

  --error-bg: #fdeaea;
  --error-border: #e5a8a4;
  --error-text: #8f231c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161b;
    --panel: #1e2128;
    --field: #262a33;
    --text: #eef1f6;
    --muted: #a8b1c1;
    --border: #3a404c;
    --border-strong: #4e5665;
    --accent: #6f9bff;
    --accent-text: #0f1116;
    --danger: #ff8a80;

    --badge-open-bg: #4a3410;
    --badge-open-text: #ffd591;
    --badge-open-border: #6d4d18;
    --badge-done-bg: #133a24;
    --badge-done-text: #8fe0ae;
    --badge-done-border: #1e5c39;

    --error-bg: #3d1d1b;
    --error-border: #7a3a35;
    --error-text: #ffb4ad;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 0 48px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.6;
}

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

.site-header h1 {
  margin: 0;
  font-size: 20px;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px;
}

/* ダッシュボード */
.dashboard {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

/* カードの枚数と画面幅にあわせて自動で折り返す */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
}

.stat-value {
  font-size: 30px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-accent {
  border-color: var(--accent);
  border-width: 2px;
}

.stat-accent .stat-value { color: var(--accent); }

/* ダッシュボード内の「最新の振り返り」 */
.latest-review {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 12px 16px;
}

.latest-review.is-empty {
  border-left-color: var(--border-strong);
}

.latest-review-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.latest-review-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.latest-review-week {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.latest-review-comment {
  margin: 4px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.latest-review.is-empty .latest-review-comment {
  color: var(--muted);
  font-size: 14px;
}

/* 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: 10px;
  padding: 16px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

.panel-wide { margin-top: 16px; }

/* 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; min-width: 0; }

.field {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.field-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}

.form-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.form-note {
  font-size: 12px;
  color: var(--muted);
}

select {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--field);
  color: var(--text);
  cursor: pointer;
  max-width: 100%;
}

select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

input[type="text"], textarea {
  font: inherit;
  padding: 9px 11px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--field);
  color: var(--text);
  resize: vertical;
}

input[type="text"]::placeholder, textarea::placeholder {
  color: var(--muted);
  opacity: 1;
}

input[type="text"]:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
  flex: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 9px 16px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  white-space: nowrap;
}

button:hover { filter: brightness(1.1); }

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* 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: 8px;
  padding: 10px 12px;
  background: var(--panel);
}

.item-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.item-title {
  font-weight: 600;
  flex: 1;
  min-width: 0;
  word-break: break-word;
}

.item-body {
  margin: 6px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

.item-meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.badge {
  font-size: 12px;
  font-weight: 600;
  padding: 1px 10px;
  border-radius: 999px;
  background: var(--badge-open-bg);
  color: var(--badge-open-text);
  border: 1px solid var(--badge-open-border);
  white-space: nowrap;
}

.badge-done {
  background: var(--badge-done-bg);
  color: var(--badge-done-text);
  border-color: var(--badge-done-border);
}

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

.item-actions {
  display: flex;
  gap: 6px;
}

/* 一覧内の小さなボタンは枠線だけにして、追加ボタンと見分けやすくする */
.btn-small {
  padding: 3px 12px;
  font-size: 12px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}

.btn-small:hover {
  background: var(--bg);
  filter: none;
}

.btn-delete {
  color: var(--danger);
  border-color: var(--danger);
}

.btn-delete:hover {
  background: var(--danger);
  color: var(--panel);
}

.empty {
  color: var(--muted);
  font-size: 14px;
  padding: 8px 0;
}

.error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  padding: 10px 12px;
  border-radius: 8px;
  margin: 0 0 16px;
  font-weight: 600;
}

@media (max-width: 720px) {
  .columns { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stats .stat { min-width: 0; }
  .stat { padding: 10px 12px; }
  .stat-label { font-size: 11px; }
  .stat-value { font-size: 24px; }
  main { padding: 16px; }
}