:root {
  --bg: #eef1f6;
  --surface: #ffffff;
  --surface-muted: #f4f6fa;
  --text: #1b2030;
  --text-sub: #525b6e;
  --muted: #8a92a3;
  --border: #e3e7ee;
  --border-strong: #cfd5e0;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef0fe;
  --success: #16a34a;
  --success-soft: #e6f6ec;
  --warning: #b45309;
  --warning-soft: #fdf1df;
  --danger: #dc3545;
  --danger-soft: #fdecee;
  --radius-lg: 16px;
  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(20, 28, 45, 0.06);
  --shadow: 0 1px 2px rgba(20, 28, 45, 0.04), 0 6px 20px rgba(20, 28, 45, 0.05);
  --shadow-hover: 0 2px 4px rgba(20, 28, 45, 0.05), 0 8px 20px rgba(20, 28, 45, 0.08);
  --ring: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

html {
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Yu Gothic UI", "Hiragino Sans", "Noto Sans JP", Meiryo, system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
p {
  margin: 0;
}

button {
  font: inherit;
  cursor: pointer;
}

.icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- ヘッダー ---------- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 32px;
  padding-bottom: 24px;
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: linear-gradient(135deg, #6366f1, #4338ca);
  border-radius: 13px;
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.28);
}

.brand-mark .icon {
  width: 22px;
  height: 22px;
}

h1 {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.greeting {
  font-size: 0.87rem;
  color: var(--text-sub);
}

.today {
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--text-sub);
  white-space: nowrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
}

main {
  padding-bottom: 56px;
}

/* ---------- ダッシュボード ---------- */

.dashboard {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.stat {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.stat-icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
}

.stat-icon-memo {
  color: var(--primary);
  background: var(--primary-soft);
}

.stat-icon-task {
  color: #0e7490;
  background: #e2f3f7;
}

.stat-icon-open {
  color: var(--warning);
  background: var(--warning-soft);
}

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

.stat-icon-review {
  color: #db2777;
  background: #fdeaf3;
}

/* 最新の振り返り */
.latest-review {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.latest-review-body {
  flex: 1;
  min-width: 0;
}

.latest-review-week {
  font-size: 0.92rem;
  font-weight: 700;
}

.latest-review-comment {
  display: -webkit-box;
  margin-top: 2px;
  overflow: hidden;
  font-size: 0.92rem;
  color: var(--text-sub);
  white-space: pre-wrap;
  word-break: break-word;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

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

.link-button {
  display: inline-flex;
  align-items: center;
  align-self: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  white-space: nowrap;
  background: var(--primary-soft);
  border-radius: 10px;
  transition: background-color 0.15s;
}

.link-button .icon {
  width: 16px;
  height: 16px;
}

.link-button:hover {
  background: #e0e3fd;
}

.link-button:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-sub);
}

.stat-value {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  margin-left: 4px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
}

/* ---------- パネル ---------- */

.columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

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

.section-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.section-title .icon {
  width: 18px;
  height: 18px;
  color: var(--primary);
}

.list-title {
  margin-top: 28px;
}

.count {
  min-width: 26px;
  padding: 0 8px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 20px;
  text-align: center;
  letter-spacing: 0;
  color: var(--text-sub);
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
}

/* ---------- フォーム ---------- */

.form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form .btn-primary {
  align-self: flex-end;
}

.form-inline {
  flex-direction: row;
}

.form-inline input {
  flex: 1;
  min-width: 0;
}

input[type="text"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  font: inherit;
  color: var(--text);
  background-color: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.15s, box-shadow 0.15s, background-color 0.15s;
}

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

input[type="text"]:hover,
select:hover,
textarea:hover {
  border-color: var(--border-strong);
}

input[type="text"]:focus,
select:focus,
textarea:focus {
  outline: none;
  background-color: var(--surface);
  border-color: var(--primary);
  box-shadow: var(--ring);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

select {
  padding-right: 40px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238a92a3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
}

.field-label {
  margin-bottom: -4px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-sub);
}

.field-label ~ .field-label {
  margin-top: 6px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  background: var(--primary);
  border: none;
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(79, 70, 229, 0.3);
  transition: background-color 0.15s, box-shadow 0.15s;
}

.btn-primary .icon {
  width: 16px;
  height: 16px;
  stroke-width: 2.5;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-primary:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: default;
}

/* ---------- 一覧 ---------- */

/* 一覧はグレーの枠の中に白いカードを並べ、周囲と区別しやすくする */
.list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 12px;
  list-style: none;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}

.empty {
  padding: 28px 12px;
  font-size: 0.88rem;
  text-align: center;
  color: var(--muted);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--muted);
}

/* メモ */
.memo {
  position: relative;
  padding: 14px 16px 12px 20px;
  overflow: hidden;
}

.memo::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: linear-gradient(180deg, #6366f1, #4338ca);
}

.memo-title {
  font-weight: 700;
  line-height: 1.5;
  word-break: break-word;
}

.memo-body {
  margin-top: 4px;
  font-size: 0.92rem;
  color: var(--text-sub);
  white-space: pre-wrap;
  word-break: break-word;
}

/* タスク */
.task {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 10px 12px 16px;
}

.task-check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin: 1px 0 0;
  cursor: pointer;
  background: var(--surface);
  border: 2px solid var(--border-strong);
  border-radius: 50%;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color 0.15s, background-color 0.15s;
}

.task-check:hover {
  border-color: var(--success);
}

.task-check:checked {
  background: var(--success) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 13px no-repeat;
  border-color: var(--success);
}

.task-check:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.25);
}

.task-main {
  flex: 1;
  min-width: 0;
}

.task-text {
  font-weight: 600;
  line-height: 1.5;
  word-break: break-word;
}

.task .meta {
  margin-top: 6px;
}

.task.is-done .task-text {
  font-weight: 500;
  color: var(--muted);
  text-decoration: line-through;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 1px 9px;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 999px;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
  border-radius: 50%;
}

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

.badge-done {
  color: #15803d;
  background: var(--success-soft);
}

.icon-button {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  padding: 0;
  color: var(--muted);
  background: transparent;
  border: none;
  border-radius: 8px;
  transition: color 0.15s, background-color 0.15s;
}

.icon-button .icon {
  width: 18px;
  height: 18px;
}

.icon-button:hover,
.icon-button:focus-visible {
  outline: none;
  color: var(--primary);
  background: var(--primary-soft);
}

.icon-button-danger:hover,
.icon-button-danger:focus-visible {
  color: var(--danger);
  background: var(--danger-soft);
}

/* 週次の振り返り */
.review-panel {
  margin-top: 24px;
  scroll-margin-top: 16px;
}

.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 32px;
  align-items: start;
}

.review-layout .list-title {
  margin-top: 0;
}

.review-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: -2px;
  font-size: 0.78rem;
  color: var(--muted);
}

.review-status::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--border-strong);
  border-radius: 50%;
}

.review-status.is-saved {
  color: #15803d;
}

.review-status.is-saved::before {
  background: var(--success);
}

.review {
  padding: 10px 10px 12px 16px;
}

.review.is-selected {
  border-color: #c7cafa;
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.review-week {
  font-size: 0.92rem;
  font-weight: 700;
}

.review-actions {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
}

.review-comment {
  margin-top: 2px;
  padding-right: 6px;
  font-size: 0.92rem;
  color: var(--text-sub);
  white-space: pre-wrap;
  word-break: break-word;
}

.tag {
  display: inline-block;
  margin-right: 8px;
  padding: 0 8px;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 20px;
  vertical-align: 1px;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: 999px;
}

/* ---------- エラー表示 ---------- */

.error {
  margin-bottom: 20px;
  padding: 12px 16px;
  font-size: 0.9rem;
  color: #b42332;
  background: var(--danger-soft);
  border: 1px solid #f5c2c8;
  border-radius: var(--radius);
}

/* ---------- 画面幅が狭いとき ---------- */

@media (max-width: 880px) {
  .dashboard {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .columns,
  .review-layout {
    grid-template-columns: 1fr;
  }

  .review-layout {
    gap: 0;
  }

  .review-layout .list-title {
    margin-top: 28px;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 20px;
    padding-bottom: 16px;
  }

  .dashboard {
    gap: 10px;
  }

  .stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 14px;
  }

  .stat-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
  }

  .stat-value {
    font-size: 1.4rem;
  }

  .panel {
    padding: 16px;
  }

  .latest-review {
    flex-wrap: wrap;
    gap: 12px;
    padding: 14px;
  }

  .latest-review-body {
    flex: 1 1 0;
  }

  .latest-review .link-button {
    justify-content: center;
    width: 100%;
  }
}