:root {
  --bg: #f4f5f7;
  --panel-bg: #ffffff;
  --border: #e0e2e7;
  --text: #24272e;
  --muted: #6b7280;
  --accent: #4f6ef7;
  --accent-hover: #3d5be0;
  --done: #9ca3af;
  --danger: #e0555a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

h1 {
  font-size: 22px;
  margin-bottom: 20px;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.dash-card {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}

.dash-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.dash-label {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

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

@media (max-width: 720px) {
  .columns {
    grid-template-columns: 1fr;
  }
  .dashboard {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 20px;
}

.panel h2 {
  font-size: 15px;
  margin: 0 0 12px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

input[type="text"],
textarea {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}

input[type="text"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

button {
  align-self: flex-start;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
}

button:hover {
  background: var(--accent-hover);
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 360px;
  overflow-y: auto;
}

.empty {
  color: var(--muted);
  font-size: 13px;
}

.memo-item,
.task-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}

.memo-item .item-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.memo-item .item-body {
  font-size: 13px;
  color: var(--text);
  white-space: pre-wrap;
  margin-bottom: 6px;
}

.item-meta {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.task-item .task-title {
  flex: 1;
  font-size: 14px;
}

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

.task-item .task-date {
  font-size: 11px;
  color: var(--muted);
}

.badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  background: #eef1ff;
  color: var(--accent);
}

.badge.done {
  background: #eef2f0;
  color: var(--done);
}

.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 13px;
  padding: 2px 6px;
  color: var(--muted);
}

.icon-btn.delete {
  color: var(--danger);
}

.icon-btn:hover {
  text-decoration: underline;
}

.review-week-label {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}

.review-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.review-stats .dash-value {
  font-size: 22px;
}

@media (max-width: 720px) {
  .review-stats {
    grid-template-columns: 1fr;
  }
}

.review-item .item-title {
  font-weight: 600;
  margin-bottom: 4px;
}