:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --text: #1f2933;
  --muted: #6b7785;
  --border: #dfe3e8;
  --primary: #2f6fed;
  --accent: #e8590c;
  --done: #16a34a;
  --danger: #d64545;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 48px;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", Meiryo, sans-serif;
  line-height: 1.6;
}

.site-header {
  max-width: 1000px;
  margin: 0 auto;
  padding: 28px 4px 12px;
}

.site-header h1 {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0.02em;
}

.tagline {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 14px;
}

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

/* ダッシュボード */
.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.stat-label {
  color: var(--muted);
  font-size: 13px;
  width: 100%;
}

.stat-value {
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
}

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

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

/* ダッシュボードの「最新の振り返り」 */
.stat-review {
  grid-column: 1 / -1;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
}

.review-week {
  font-size: 14px;
  font-weight: 700;
}

.review-comment {
  margin: 0;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
  /* 長い振り返りはダッシュボードでは3行までにとどめる */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.review-comment.is-empty { color: var(--muted); }

.review-jump {
  align-self: flex-start;
  font-size: 12px;
  color: var(--primary);
}

/* パネル */
.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: 18px 18px 22px;
}

.panel h2 {
  font-size: 15px;
  margin: 22px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.panel h2:first-child { margin-top: 0; }

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

.count {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

/* フォーム */
.form { display: flex; flex-direction: column; gap: 10px; }

.field { display: flex; flex-direction: column; gap: 4px; }

.field > span {
  font-size: 12px;
  color: var(--muted);
}

select {
  font: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: inherit;
  align-self: flex-start;
  min-width: 260px;
  max-width: 100%;
}

.hint {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

input[type="text"], textarea {
  font: inherit;
  font-size: 14px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: inherit;
  resize: vertical;
}

input[type="text"]:focus, textarea:focus {
  outline: 2px solid rgba(47, 111, 237, 0.35);
  border-color: var(--primary);
}

.btn {
  font: inherit;
  font-size: 13px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 6px;
  padding: 7px 12px;
  cursor: pointer;
}

.btn:hover { background: #f0f3f7; }

.btn-primary {
  align-self: flex-start;
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 600;
  padding: 8px 18px;
}

.btn-primary:hover { background: #2559c7; }

.btn-danger { color: var(--danger); }
.btn-danger:hover { background: #fdeaea; }

/* 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: #fdfdfe;
}

.item-title {
  font-weight: 600;
  font-size: 14px;
  word-break: break-word;
}

.item-body {
  margin: 4px 0 0;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
}

.item-meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.task-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.task-actions { display: flex; gap: 6px; flex-shrink: 0; }

.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--border);
}

.group-label {
  margin-top: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.list .group-label:first-child { margin-top: 0; }

.badge-open { color: var(--accent); border-color: var(--accent); }
.badge-done { color: var(--done); border-color: var(--done); }

.item.done { background: #f6f8f6; }
.item.done .item-title {
  text-decoration: line-through;
  color: var(--muted);
}

.empty {
  color: var(--muted);
  font-size: 13px;
  margin: 8px 2px 0;
}

.error {
  background: #fdeaea;
  border: 1px solid var(--danger);
  color: #a12b2b;
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  margin: 0 0 16px;
}

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