/* ===== デザイントークン ===== */
:root {
  --bg: #eef1f8;
  --bg-grad-a: #6366f1;
  --bg-grad-b: #8b5cf6;
  --surface: #ffffff;
  --surface-soft: #f8f9fd;
  --border: #e8ebf3;
  --text: #1f2740;
  --text-soft: #5b6478;
  --text-mute: #98a1b5;
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-soft: #eef0ff;
  --success: #10b981;
  --success-soft: #e7f8f1;
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-soft: #fdecec;
  --accent: #f43f5e;
  --shadow-sm: 0 1px 2px rgba(31, 39, 64, 0.06);
  --shadow-md: 0 6px 20px rgba(31, 39, 64, 0.08);
  --shadow-lg: 0 14px 40px rgba(31, 39, 64, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Segoe UI",
    "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ===== ヘッダー ===== */
.app-header {
  background: linear-gradient(135deg, var(--bg-grad-a), var(--bg-grad-b));
  color: #fff;
  padding: 34px 20px 64px;
  box-shadow: var(--shadow-md);
}

.app-header__inner {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-logo {
  font-size: 2.4rem;
  line-height: 1;
  background: rgba(255, 255, 255, 0.16);
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.25);
}

.app-header h1 {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.app-subtitle {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-top: 2px;
}

/* ===== コンテナ ===== */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px 48px;
}

/* ===== ダッシュボード ===== */
.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: -44px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  font-size: 1.5rem;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon--notes {
  background: var(--primary-soft);
}
.stat-icon--tasks {
  background: #e6f0ff;
}
.stat-icon--open {
  background: #fff0e9;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

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

.stat-label {
  font-size: 0.82rem;
  color: var(--text-mute);
  font-weight: 500;
}

/* ===== レイアウト ===== */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 24px;
}

.column {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.panel {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.panel__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
}

.panel__icon {
  font-size: 1.15rem;
}

.count-pill {
  margin-left: auto;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 11px;
  border-radius: 999px;
  min-width: 26px;
  text-align: center;
}

/* ===== フォーム ===== */
form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

input[type="text"],
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface-soft);
  resize: vertical;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

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

input[type="text"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--surface);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12);
}

.btn {
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.15s, background 0.15s, opacity 0.15s;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 12px 18px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.38);
}

.error {
  color: var(--danger);
  font-size: 0.83rem;
  min-height: 1em;
}

.error:empty {
  min-height: 0;
}

/* ===== 一覧 ===== */
.list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.empty {
  color: var(--text-mute);
  font-size: 0.9rem;
  text-align: center;
  padding: 28px 0;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
}

.item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  background: var(--surface);
  position: relative;
  transition: box-shadow 0.15s, border-color 0.15s, transform 0.15s;
  animation: pop-in 0.22s ease;
}

.item:hover {
  border-color: #d7dcea;
  box-shadow: var(--shadow-sm);
}

.item--note {
  border-left: 3px solid var(--primary);
}

.item--task {
  border-left: 3px solid var(--warning);
}

.item--task.task-done {
  border-left-color: var(--success);
  background: var(--surface-soft);
}

.item-title {
  font-weight: 600;
  color: var(--text);
  word-break: break-word;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.item-body {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin-top: 5px;
  white-space: pre-wrap;
  word-break: break-word;
}

.item-meta {
  font-size: 0.76rem;
  color: var(--text-mute);
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 5px;
}

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

.btn-sm {
  padding: 6px 13px;
  font-size: 0.8rem;
  border-radius: 8px;
}

.btn-done {
  background: var(--success-soft);
  color: var(--success);
}
.btn-done:hover {
  background: #d5f2e6;
}

.btn-undo {
  background: #fdf0d9;
  color: var(--warning);
}
.btn-undo:hover {
  background: #fbe6bf;
}

.btn-delete {
  background: transparent;
  color: var(--text-mute);
}
.btn-delete:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

/* ===== 完了タスク ===== */
.task-done .item-title {
  color: var(--text-mute);
}
.task-done .item-title .task-label {
  text-decoration: line-through;
}

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.badge-open {
  background: #fff0e0;
  color: var(--warning);
}

.badge-done {
  background: var(--success-soft);
  color: var(--success);
}

/* ===== フッター ===== */
.app-footer {
  text-align: center;
  color: var(--text-mute);
  font-size: 0.8rem;
  margin-top: 36px;
}

/* ===== アニメーション ===== */
@keyframes pop-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 最新の振り返り（ダッシュボード） ===== */
.latest-review {
  margin-top: 18px;
  background: linear-gradient(135deg, #eef0ff, #f6f0ff);
  border: 1px solid #e2e0ff;
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}

.latest-review__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.latest-review__icon {
  font-size: 1.15rem;
}

.latest-review__label {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 0.02em;
}

.latest-review__week {
  margin-left: auto;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: rgba(255, 255, 255, 0.7);
  padding: 3px 11px;
  border-radius: 999px;
}

.latest-review__comment {
  font-size: 0.98rem;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.7;
}

.latest-review.is-empty .latest-review__comment {
  color: var(--text-mute);
}

/* ===== 週次振り返りセクション ===== */
.review-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 24px;
}

.review-form__row {
  display: flex;
  gap: 12px;
}

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

.field__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-soft);
}

.week-picker {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

input[type="date"] {
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface-soft);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

input[type="date"]:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--surface);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.12);
}

.week-picker__preview {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-soft);
  padding: 6px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.week-picker__preview:empty {
  display: none;
}

.review-form__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.review-form__hint {
  font-size: 0.78rem;
  color: var(--text-mute);
}

.item--review {
  border-left: 3px solid var(--primary);
}

.week-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-soft);
  padding: 3px 11px;
  border-radius: 999px;
}

/* ===== レスポンシブ ===== */
@media (max-width: 760px) {
  .grid,
  .review-section {
    grid-template-columns: 1fr;
  }
  .dashboard {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .app-header h1 {
    font-size: 1.4rem;
  }
}