:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #e2e6ee;
  --text: #1f2430;
  --muted: #7a8291;
  --primary: #3b6ef5;
  --primary-dark: #2c56ca;
  --green: #2e9e5b;
  --green-dark: #24804a;
  --green-soft: #e7f5ec;
  --green-soft-hover: #d5edde;
  --accent: #f0803c;
  --danger: #d9534f;
  --radius: 12px;
}

* { box-sizing: border-box; }

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

.site-header {
  background: linear-gradient(120deg, #3b6ef5, #6b4df6);
  color: #fff;
  padding: 28px 20px 24px;
  text-align: center;
}
.site-header h1 { margin: 0; font-size: 1.6rem; }
.site-header__sub { margin: 4px 0 0; opacity: .85; font-size: .9rem; }

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

/* ダッシュボード */
.dashboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(20, 30, 60, .06);
}
.stat__label { display: block; font-size: .82rem; color: var(--muted); }
.stat__value { display: block; font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat--accent .stat__value { color: var(--accent); }
.stat--done .stat__value { color: var(--green); }

/* 最新の振り返り（ダッシュボード内で横幅いっぱい） */
.latest-review {
  grid-column: 1 / -1;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(20, 30, 60, .06);
}
.latest-review__label { font-size: .82rem; color: var(--muted); }
.latest-review__none { margin: 4px 0 0; color: var(--muted); font-size: .9rem; }
.latest-review__week { margin: 2px 0 0; font-weight: 700; color: var(--green-dark); }
.latest-review__comment {
  margin: 6px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .94rem;
}
.latest-review__meta { margin: 8px 0 0; font-size: .76rem; color: var(--muted); }

/* メッセージ */
.message {
  margin: 0 0 16px;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: #fdecec;
  color: #a3312d;
  border: 1px solid #f5c6c4;
  font-size: .9rem;
}

/* 2カラム */
.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items: start;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 1px 3px rgba(20, 30, 60, .06);
}
.panel--wide { margin-top: 18px; }
.panel__title {
  margin: 0 0 12px;
  font-size: 1.05rem;
}
.panel__title--list {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.count {
  display: inline-block;
  min-width: 24px;
  padding: 0 7px;
  border-radius: 999px;
  background: #eef2fd;
  color: var(--primary);
  font-size: .8rem;
  text-align: center;
}

/* フォーム */
.form { display: flex; flex-direction: column; gap: 10px; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field__label { font-size: .82rem; color: var(--muted); }
input[type="text"], textarea, select {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  background: #fbfcfe;
  resize: vertical;
}
select { resize: none; }
input[type="text"]:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
}

.hint {
  margin: 0;
  font-size: .8rem;
  color: var(--accent);
}

.btn {
  padding: 9px 14px;
  border: none;
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
  transition: background .15s, opacity .15s;
}
.btn--primary { background: var(--green); color: #fff; font-weight: 600; }
.btn--primary:hover { background: var(--green-dark); }
.btn--small { padding: 4px 10px; font-size: .78rem; }
.btn--toggle { background: var(--green-soft); color: var(--green-dark); }
.btn--toggle:hover { background: var(--green-soft-hover); }
.btn--danger { background: #fdecec; color: var(--danger); }
.btn--danger:hover { background: #f8dcdc; }

/* 一覧 */
.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  background: #fdfdff;
}
.item__title { margin: 0; font-weight: 600; word-break: break-word; }
.item__body {
  margin: 6px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .92rem;
  color: #3a4152;
}
.item__meta {
  margin-top: 8px;
  font-size: .76rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.item__actions { margin-top: 10px; display: flex; gap: 8px; }

.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: .74rem;
  font-weight: 600;
}
.badge--done { background: #e4f5ea; color: #2b7a4b; }
.badge--todo { background: #fdf0e6; color: #b45f22; }

.item--done { background: #f6f8f7; }
.item--done .item__title { text-decoration: line-through; color: var(--muted); }

.empty { color: var(--muted); font-size: .88rem; text-align: center; padding: 14px 0; margin: 0; }

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: .8rem;
  padding-bottom: 28px;
}
.site-footer code { background: #e8ebf2; padding: 1px 5px; border-radius: 4px; }

/* 幅が狭いときは件数カードを2列に折り返す */
@media (max-width: 900px) {
  .dashboard { grid-template-columns: repeat(2, 1fr); }
}

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