/* ===========================================================================
   カラーとサイズの設定（ここの値を変えると全体の印象が変わります）
   =========================================================================== */

:root {
  --bg: #f2f4f8;
  --bg-glow: #e6ebf6;
  --panel: #ffffff;
  --panel-line: #e6eaf1;

  --text: #16202e;
  --text-soft: #4d5a6b;
  --muted: #7c8798;

  --item-bg: #f7f9fc;
  --item-line: #e4e9f1;
  --item-bg-hover: #f1f5fb;

  --field-bg: #f8fafc;
  --field-line: #dfe5ee;

  --accent: #4256d0;
  --accent-strong: #3245b5;
  --accent-soft: #eef1fd;

  /* ダッシュボード3項目の色分け */
  --c-memo: #4256d0;
  --c-memo-soft: #eef1fd;
  --c-task: #0e8266;
  --c-task-soft: #e6f4ef;
  --c-open: #c07a10;
  --c-open-soft: #fdf3dc;
  --c-done: #2e9e5b;
  --c-done-soft: #e7f6ec;

  --danger: #c0392f;
  --danger-soft: #fdeeec;
  --done: #14804a;
  --done-soft: #e6f4ec;
  --warn: #8a6212;
  --warn-soft: #fdf3dc;

  --shadow-sm: 0 1px 2px rgba(18, 27, 42, .05);
  --shadow-md: 0 6px 20px -8px rgba(18, 27, 42, .16), 0 1px 3px rgba(18, 27, 42, .05);
  --shadow-lg: 0 14px 34px -14px rgba(18, 27, 42, .26);

  --radius: 14px;
  --radius-sm: 10px;
}

/* OS が「ダークモード」のときの配色 */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420;
    --bg-glow: #182135;
    --panel: #171e2c;
    --panel-line: #26304180;

    --text: #eaeef6;
    --text-soft: #b7c0cf;
    --muted: #8b95a7;

    --item-bg: #1d2534;
    --item-line: #2c3547;
    --item-bg-hover: #222b3c;

    --field-bg: #141b28;
    --field-line: #2c3547;

    --accent: #7b8cf0;
    --accent-strong: #93a1f5;
    --accent-soft: #232c46;

    --c-memo: #7b8cf0;
    --c-memo-soft: #232c46;
    --c-task: #4fc3a1;
    --c-task-soft: #16332b;
    --c-open: #e2b45f;
    --c-open-soft: #332813;
    --c-done: #5fce89;
    --c-done-soft: #16331f;

    --danger: #f08c82;
    --danger-soft: #33222180;
    --done: #56c98d;
    --done-soft: #16302480;
    --warn: #e2b45f;
    --warn-soft: #32281380;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);
    --shadow-md: 0 6px 20px -8px rgba(0, 0, 0, .6);
    --shadow-lg: 0 14px 34px -14px rgba(0, 0, 0, .7);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0 20px 64px;
  min-height: 100vh;
  background:
    radial-gradient(900px 420px at 12% -8%, var(--bg-glow), transparent 70%),
    radial-gradient(760px 380px at 92% 0%, var(--accent-soft), transparent 72%),
    var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
               "Yu Gothic UI", "Noto Sans JP", Meiryo, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

main { max-width: 1060px; margin: 0 auto; }

/* ===========================================================================
   ヘッダー
   =========================================================================== */

.site-header {
  max-width: 1060px;
  margin: 0 auto;
  padding: 40px 0 26px;
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand-mark {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  box-shadow: var(--shadow-md);
}
.brand-mark svg { width: 24px; height: 24px; }

.brand-text h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: .01em;
}
.subtitle {
  margin: 1px 0 0;
  color: var(--muted);
  font-size: .84rem;
  letter-spacing: .04em;
}

/* ===========================================================================
   ダッシュボード
   =========================================================================== */

.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

/* 3項目それぞれの色。--stat-color / --stat-soft をカードごとに差し替える */
.stat-memo { --stat-color: var(--c-memo); --stat-soft: var(--c-memo-soft); }
.stat-task { --stat-color: var(--c-task); --stat-soft: var(--c-task-soft); }
.stat-open { --stat-color: var(--c-open); --stat-soft: var(--c-open-soft); }
.stat-done { --stat-color: var(--c-done); --stat-soft: var(--c-done-soft); }

.stat {
  position: relative;
  overflow: hidden;
  padding: 20px 22px 18px;
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}
.stat:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* カード上端の細いライン（この色で3項目を見分ける） */
.stat::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--stat-color);
}

.stat-icon {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-bottom: 10px;
  border-radius: 9px;
  color: var(--stat-color);
  background: var(--stat-soft);
  border: 1px solid transparent;
}
.stat-icon svg { width: 17px; height: 17px; }

.stat-label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .06em;
}
.stat-value {
  display: block;
  margin-top: 2px;
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  color: var(--stat-color);
}

/* ===========================================================================
   ダッシュボード：最新の振り返り
   =========================================================================== */

.latest-review {
  position: relative;
  overflow: hidden;
  margin-bottom: 24px;
  padding: 20px 24px 22px;
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  background:
    linear-gradient(120deg, var(--accent-soft), transparent 60%),
    var(--panel);
  box-shadow: var(--shadow-sm);
}
.latest-review::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
}

.latest-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 10px;
}
.latest-head h2 {
  margin: 0;
  font-size: .8rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .12em;
}
.latest-icon {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  color: var(--accent);
  background: var(--accent-soft);
}
.latest-icon svg { width: 16px; height: 16px; }

.latest-week {
  margin-left: auto;
  padding: 2px 11px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .74rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.latest-week:empty { display: none; }

.latest-comment {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .96rem;
  line-height: 1.75;
}
.latest-comment.is-empty { color: var(--muted); font-size: .88rem; }

.latest-meta {
  margin: 10px 0 0;
  font-size: .74rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ===========================================================================
   メッセージ表示
   =========================================================================== */

.message {
  margin: 0 0 18px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--danger-soft);
  border: 1px solid color-mix(in srgb, var(--danger) 28%, transparent);
  color: var(--danger);
  font-size: .88rem;
  font-weight: 600;
}

/* ===========================================================================
   レイアウト
   =========================================================================== */

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.panel {
  padding: 26px 26px 28px;
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow-md);
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--panel-line);
}
.panel-head h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
}

/* 一覧の見出し + 件数バッジ */
.list-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 30px 0 14px;
}
.list-head h3 {
  margin: 0;
  font-size: .78rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: .12em;
}
.list-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--panel-line);
}
.pill {
  order: 3;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .72rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ===========================================================================
   入力フォーム
   =========================================================================== */

.form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }

.form label {
  font-size: .76rem;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: .08em;
}

.form input, .form textarea, .form select {
  font: inherit;
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--field-line);
  border-radius: var(--radius-sm);
  background: var(--field-bg);
  color: inherit;
  resize: vertical;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.form select { cursor: pointer; }
.form input::placeholder, .form textarea::placeholder { color: var(--muted); opacity: .75; }

.form input:focus, .form textarea:focus, .form select:focus {
  outline: none;
  background: var(--panel);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.hint {
  margin: 2px 0 0;
  font-size: .76rem;
  color: var(--warn);
}

/* 振り返りのフォームは、画面が広いときは横並びにする */
.panel-wide { margin-top: 20px; }

.form-review { display: grid; gap: 14px 18px; }
@media (min-width: 881px) {
  .form-review {
    grid-template-columns: minmax(220px, 300px) 1fr auto;
    align-items: start;
  }
  .form-review .btn-review { margin-top: 26px; align-self: start; padding: 12px 26px; }
}

/* ===========================================================================
   ボタン
   =========================================================================== */

.btn {
  font: inherit;
  cursor: pointer;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 7px 13px;
  transition: background .15s, border-color .15s, transform .1s, box-shadow .15s;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  margin-top: 2px;
  padding: 12px;
  background: linear-gradient(145deg, var(--accent), var(--accent-strong));
  color: #fff;
  font-weight: 700;
  letter-spacing: .06em;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  box-shadow: var(--shadow-md);
  filter: brightness(1.06);
}

/* 一覧カードの中のボタン */
.btn-small {
  font-size: .78rem;
  font-weight: 600;
  padding: 5px 12px;
  background: var(--panel);
}
.btn-toggle { border-color: var(--item-line); color: var(--accent); }
.btn-toggle:hover { background: var(--accent-soft); border-color: var(--accent); }
.btn-delete { border-color: var(--item-line); color: var(--danger); }
.btn-delete:hover { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 40%, transparent); }

/* ===========================================================================
   メモ・タスクの一覧
   =========================================================================== */

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.item {
  position: relative;
  overflow: hidden;
  padding: 14px 16px 14px 18px;
  border: 1px solid var(--item-line);
  border-radius: var(--radius-sm);
  background: var(--item-bg);
  box-shadow: var(--shadow-sm);
  transition: background .16s, box-shadow .16s, transform .16s, border-color .16s;
  animation: item-in .22s ease both;
}
/* 左端の色ライン（未完了は青、完了はグレー） */
.item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
}
.item:hover {
  background: var(--item-bg-hover);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--item-line));
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

@keyframes item-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

.item-title {
  margin: 0;
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.5;
  word-break: break-word;
}
.item-body {
  margin: 7px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .9rem;
  color: var(--text-soft);
}

.item-meta {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: .74rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.badge {
  padding: 1px 9px;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
}
.badge-open { background: var(--warn-soft); color: var(--warn); }
.badge-done { background: var(--done-soft); color: var(--done); }

.item-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* 完了したタスク */
.item-done { background: transparent; }
.item-done::before { background: var(--item-line); }
.item-done:hover { background: var(--item-bg); border-color: var(--item-line); }
.item-done .item-title {
  text-decoration: line-through;
  text-decoration-thickness: 1px;
  color: var(--muted);
  font-weight: 600;
}

/* 件数が 0 のとき */
.empty {
  padding: 26px 16px;
  text-align: center;
  border: 1px dashed var(--item-line);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: .85rem;
}

/* ===========================================================================
   画面が狭いとき（タブレット・スマートフォン）
   =========================================================================== */

@media (max-width: 880px) {
  .columns { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { padding: 0 14px 44px; }
  .site-header { padding: 28px 0 20px; }
  .dashboard { grid-template-columns: 1fr; gap: 12px; }
  .stat { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 0 14px; padding: 15px 18px; }
  .stat-icon { margin-bottom: 0; grid-row: span 2; }
  .stat-value { font-size: 1.6rem; grid-row: span 2; }
  .panel { padding: 20px 18px 22px; }
}

/* アニメーションを控えめにする設定の場合 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}