:root {
  --bg: #0f0c1a;
  --bg-gradient: radial-gradient(circle at 15% 0%, #241a3d 0%, #120e1f 45%, #0a0812 100%);
  --surface: #1a1530;
  --surface-alt: #201a3a;
  --border: #322a54;
  --border-soft: #2a2447;
  --text: #eae7f5;
  --text-dim: #a49dc4;
  --text-faint: #736c95;
  --accent: #a855f7;
  --accent-bright: #c084fc;
  --accent-dim: #7c3aed;
  --accent-glow: rgba(168, 85, 247, 0.35);
  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.12);
  --warning: #fbbf24;
  --warning-bg: rgba(251, 191, 36, 0.12);
  --danger: #f87171;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  background: var(--bg-gradient);
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header h1 {
  font-size: 1.9rem;
  margin: 0 0 24px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: linear-gradient(90deg, var(--accent-bright), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.dashboard {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

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

@media (max-width: 720px) {
  .dashboard-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

.dashboard-card {
  position: relative;
  background: linear-gradient(160deg, var(--surface-alt), var(--surface));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px 18px;
  text-align: center;
  overflow: hidden;
}

.dashboard-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.8;
}

.dashboard-value {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-bright);
  text-shadow: 0 0 24px var(--accent-glow);
}

.dashboard-label {
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

.dashboard-review {
  position: relative;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.14), var(--surface));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow: hidden;
}

.dashboard-review::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.8;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.review-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent-bright);
}

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

.review-comment {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-dim);
  line-height: 1.6;
  white-space: pre-wrap;
}

.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: linear-gradient(160deg, var(--surface-alt), var(--surface));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 20px;
}

.panel.wide {
  margin-top: 20px;
}

.form.review-form {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-start;
}

.form.review-form input[type="week"] {
  flex: 0 0 200px;
  color-scheme: dark;
}

.form.review-form textarea {
  flex: 1 1 260px;
}

.form.review-form button {
  flex: 0 0 auto;
}

.panel h2 {
  margin-top: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 12px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel h2::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.form input,
.form textarea {
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
  background: #140f24;
  color: var(--text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form input::placeholder,
.form textarea::placeholder {
  color: var(--text-faint);
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form button {
  align-self: flex-start;
  padding: 9px 20px;
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  color: #fff;
  border: none;
  border-radius: 9px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.form button:hover {
  filter: brightness(1.12);
  transform: translateY(-1px);
}

.form button:active {
  transform: translateY(0);
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 480px;
  overflow-y: auto;
}

.item-list::-webkit-scrollbar {
  width: 8px;
}

.item-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 8px;
}

.item {
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.015);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.item:hover {
  border-color: var(--border);
  background: rgba(168, 85, 247, 0.04);
}

.note-item .note-title {
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.note-item .note-body {
  white-space: pre-wrap;
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 8px;
  line-height: 1.5;
}

.review-item .review-item-week {
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--accent-bright);
  font-size: 0.85rem;
}

.review-item .review-item-comment {
  white-space: pre-wrap;
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 8px;
  line-height: 1.5;
}

.item .meta {
  font-size: 0.75rem;
  color: var(--text-faint);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.task-item input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1.5px solid var(--border);
  border-radius: 5px;
  background: #140f24;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.task-item input[type="checkbox"]:hover {
  border-color: var(--accent);
}

.task-item input[type="checkbox"]:checked {
  background: linear-gradient(135deg, var(--accent-dim), var(--accent));
  border-color: var(--accent);
}

.task-item input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 4px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.task-item .task-main {
  flex: 1;
}

.task-item .task-title {
  font-size: 0.95rem;
  color: var(--text);
}

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

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge.pending {
  background: var(--warning-bg);
  color: var(--warning);
}

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

.icon-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-faint);
  padding: 3px 8px;
  border-radius: 6px;
  transition: color 0.15s ease, background 0.15s ease;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-dim);
}

.icon-btn.delete:hover {
  color: var(--danger);
  background: rgba(248, 113, 113, 0.1);
}

.empty {
  color: var(--text-faint);
  font-size: 0.9rem;
  text-align: center;
  padding: 20px 0;
}