/* ===== 配色（ライトモード） ===== */
:root {
  /* 明暗どちらも自前で用意していることをブラウザに伝える
     （これが無いとブラウザの自動ダークモードで色が勝手に反転する） */
  color-scheme: light dark;

  --bg: #eef1f7;
  --bg-glow-1: rgba(99, 102, 241, 0.14);
  --bg-glow-2: rgba(14, 165, 233, 0.12);
  --panel: #ffffff;
  --panel-soft: #f7f9fc;
  --border: #e2e7f0;
  --border-strong: #cfd7e5;
  --text: #1b2333;
  --muted: #6b7688;
  --faint: #93a0b4;

  --indigo: #5b62e8;
  --indigo-dark: #464cd0;
  --sky: #0ea5e9;
  --violet: #8b5cf6;
  --amber: #e08b1a;
  --green: #16a34a;
  --red: #dc4a43;

  --shadow-sm: 0 1px 2px rgba(20, 30, 60, 0.05);
  --shadow: 0 6px 20px -8px rgba(20, 30, 60, 0.18);
  --shadow-lg: 0 14px 34px -14px rgba(20, 30, 60, 0.3);
  --radius: 14px;
}

/* ===== 配色（ダークモード：OSの設定に自動で追従） ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151f;
    --bg-glow-1: rgba(99, 102, 241, 0.2);
    --bg-glow-2: rgba(14, 165, 233, 0.14);
    --panel: #1b1f2c;
    --panel-soft: #212636;
    --border: #2c3244;
    --border-strong: #3a4257;
    --text: #e8ecf5;
    --muted: #9aa5b9;
    --faint: #79839a;

    --indigo: #7c82f5;
    --indigo-dark: #6a70ea;
    --sky: #38bdf8;
    --violet: #a78bfa;
    --amber: #f0b45a;
    --green: #4ade80;
    --red: #f0736c;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 6px 20px -8px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 14px 34px -14px rgba(0, 0, 0, 0.75);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 20px 64px;
  min-height: 100vh;
  background:
    radial-gradient(900px 420px at 12% -8%, var(--bg-glow-1), transparent 65%),
    radial-gradient(760px 380px at 92% 4%, var(--bg-glow-2), transparent 62%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Yu Gothic UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ===== ヘッダー ===== */
.site-header { max-width: 1040px; margin: 0 auto; padding: 34px 0 6px; }

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

.brand-mark {
  width: 46px;
  height: 46px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  box-shadow: var(--shadow);
}
.brand-mark svg { width: 26px; height: 26px; }

.site-header h1 {
  margin: 0;
  font-size: 27px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.subtitle { margin: 1px 0 0; color: var(--muted); font-size: 13.5px; }

.brand > div { flex: 1; }
.btn-logout { align-self: center; }

main { max-width: 1040px; margin: 0 auto; }

/* ===== 合言葉の入力画面 ===== */
.lock {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(900px 420px at 12% -8%, var(--bg-glow-1), transparent 65%),
    radial-gradient(760px 380px at 92% 4%, var(--bg-glow-2), transparent 62%),
    var(--bg);
}
.lock[hidden] { display: none; }

.lock-box {
  width: 100%;
  max-width: 340px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: stretch;
  padding: 28px 26px 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  text-align: center;
}
.lock-box .brand-mark { margin: 0 auto; }
.lock-box h2 { margin: 4px 0 0; font-size: 19px; }
.lock-text { margin: 0 0 4px; font-size: 13px; color: var(--muted); }
.lock-error {
  margin: 0;
  font-size: 12.5px;
  color: var(--red);
}

/* 合言葉の入力中は本体を隠す */
body.is-locked .site-header,
body.is-locked main { display: none; }

/* ===== ダッシュボード ===== */
.dashboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 22px 0 24px;
}
/* 画面が狭いときは2列に折り返す */
@media (max-width: 1000px) {
  .dashboard { grid-template-columns: repeat(2, 1fr); }
}

.stat {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px 15px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.stat:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* カード上端の色帯 */
.stat::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--accent);
}

.stat-memo  { --accent: linear-gradient(90deg, var(--sky), var(--indigo)); --tint: var(--sky); }
.stat-task  { --accent: linear-gradient(90deg, var(--indigo), var(--violet)); --tint: var(--violet); }
.stat-done  { --accent: linear-gradient(90deg, var(--green), var(--sky)); --tint: var(--green); }
.stat-open  { --accent: linear-gradient(90deg, var(--amber), #f2704b); --tint: var(--amber); }

.stat-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  color: var(--tint);
  background: color-mix(in srgb, var(--tint) 13%, transparent);
  margin-bottom: 8px;
}
.stat-icon svg { width: 18px; height: 18px; }

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}
.stat-number { display: flex; align-items: baseline; gap: 5px; }
.stat-value {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.stat-done .stat-value { color: var(--green); }
.stat-open .stat-value { color: var(--amber); }
.stat-unit { color: var(--faint); font-size: 12.5px; }

/* ===== ダッシュボード：最新の振り返り ===== */
.latest {
  --tint: var(--green);
  position: relative;
  overflow: hidden;
  margin: 0 0 24px;
  padding: 15px 18px 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.latest::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--green), var(--sky));
}
.latest-head { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.latest-icon { display: grid; place-items: center; color: var(--tint); }
.latest-icon svg { width: 17px; height: 17px; }
.latest-label { font-size: 12.5px; font-weight: 600; color: var(--muted); letter-spacing: 0.04em; }
.latest-week {
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  color: var(--tint);
  background: color-mix(in srgb, var(--tint) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--tint) 28%, transparent);
  font-variant-numeric: tabular-nums;
}
.latest-week:empty { display: none; }
.latest-comment {
  margin: 7px 0 0;
  font-size: 14px;
  white-space: pre-wrap;
  word-break: break-word;
}
.latest-comment.is-empty { color: var(--faint); font-size: 13px; }

/* ===== メッセージ ===== */
.message {
  margin: 0 0 18px;
  padding: 11px 15px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--red) 10%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--red) 32%, transparent);
  color: var(--red);
  font-size: 13.5px;
  box-shadow: var(--shadow-sm);
}

/* ===== レイアウト ===== */
.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 780px) {
  .columns { grid-template-columns: 1fr; }
  .dashboard { grid-template-columns: 1fr; gap: 10px; }
  .stat { display: flex; align-items: center; gap: 12px; padding: 13px 16px; }
  .stat-icon { margin-bottom: 0; }
  .stat-label { flex: 1; }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.panel h2 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--tint); }
.panel-memo { --tint: var(--sky); }
.panel-task { --tint: var(--violet); }
.panel-review { --tint: var(--green); margin-top: 16px; }

/* 週次の振り返り：左に入力欄、右に履歴 */
.review-layout {
  display: grid;
  grid-template-columns: minmax(240px, 320px) 1fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 780px) {
  .review-layout { grid-template-columns: 1fr; gap: 4px; }
}
.review-layout .form { margin-bottom: 0; }

.field-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.03em;
}
.field-label + select, .field-label + textarea { margin-top: -3px; }

select {
  font: inherit;
  width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--panel-soft);
  color: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
select:focus {
  outline: none;
  background: var(--panel);
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--indigo) 20%, transparent);
}

.hint { margin: 0; font-size: 11.5px; color: var(--faint); }

#review-list .item { --tint: linear-gradient(180deg, var(--green), var(--sky)); }
#review-list .item-body { color: var(--text); }

/* ===== 入力欄 ===== */
.form { display: flex; flex-direction: column; gap: 9px; margin-bottom: 18px; }
.form-inline { flex-direction: row; }
.form-inline input { flex: 1; min-width: 0; }

input, textarea {
  font: inherit;
  width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--panel-soft);
  color: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
input::placeholder, textarea::placeholder { color: var(--faint); }
input:focus, textarea:focus {
  outline: none;
  background: var(--panel);
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--indigo) 20%, transparent);
}
textarea { resize: vertical; min-height: 84px; }

/* ===== ボタン ===== */
button {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  box-shadow: var(--shadow-sm);
  transition: transform 0.14s ease, box-shadow 0.14s ease, filter 0.14s ease, background 0.14s ease;
}
button:hover { filter: brightness(1.06); box-shadow: var(--shadow); transform: translateY(-1px); }
button:active { transform: translateY(0); filter: brightness(0.97); }
button:focus-visible { outline: 2px solid var(--indigo); outline-offset: 2px; }

.btn-primary { white-space: nowrap; }

/* 補助ボタン（枠線だけの控えめな見た目） */
.btn-ghost {
  padding: 5px 11px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  border-color: var(--border-strong);
  box-shadow: none;
}
.btn-ghost:hover {
  filter: none;
  color: var(--red);
  border-color: color-mix(in srgb, var(--red) 45%, transparent);
  background: color-mix(in srgb, var(--red) 8%, transparent);
}

/* 丸いチェックボタン（タスクの完了切り替え） */
.check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  padding: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1.8px solid var(--border-strong);
  background: transparent;
  color: transparent;
  font-size: 12px;
  line-height: 1;
  box-shadow: none;
}
.check:hover {
  filter: none;
  transform: none;
  border-color: var(--green);
  color: color-mix(in srgb, var(--green) 45%, transparent);
  background: color-mix(in srgb, var(--green) 10%, transparent);
}
.check-done {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
}
.check-done:hover { filter: brightness(1.05); color: #fff; background: var(--green); }

/* ===== 一覧 ===== */
.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 12px 14px 11px 16px;
  background: var(--panel-soft);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
  animation: pop-in 0.22s ease both;
}
.item:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

/* 左端の色ライン */
.item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--tint);
  opacity: 0.85;
}
#memo-list .item { --tint: linear-gradient(180deg, var(--sky), var(--indigo)); }
#task-list .item { --tint: linear-gradient(180deg, var(--indigo), var(--violet)); }
#task-list .task-done { --tint: var(--green); background: var(--panel); }

@keyframes pop-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.item-head { display: flex; align-items: flex-start; gap: 10px; }
.item-title {
  flex: 1;
  font-weight: 600;
  font-size: 14.5px;
  word-break: break-word;
  transition: color 0.16s ease;
}
.item-body {
  margin: 7px 0 0;
  padding-left: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 13.5px;
  color: var(--muted);
}
.item-meta {
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 11.5px;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}
.item-actions { display: flex; gap: 6px; flex-shrink: 0; }

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

/* 状態バッジ */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  letter-spacing: 0.03em;
  color: var(--amber);
  background: color-mix(in srgb, var(--amber) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--amber) 28%, transparent);
}
.badge-done {
  color: var(--green);
  background: color-mix(in srgb, var(--green) 14%, transparent);
  border-color: color-mix(in srgb, var(--green) 30%, transparent);
}

.empty {
  margin: 6px 0 0;
  padding: 18px 0;
  text-align: center;
  color: var(--faint);
  font-size: 13px;
  border: 1px dashed var(--border-strong);
  border-radius: 11px;
}

/* 動きを減らす設定にしている人向け */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}