:root {
  color-scheme: light;
  --bg: #fdf2f6;
  --panel-bg: #fffbfd;
  --border: #f4d3e0;
  --text: #3a2530;
  --text-muted: #9b7386;
  --accent: #e0538a;
  --accent-hover: #c93f74;
  --danger: #d6455f;
  --danger-hover: #b8324b;
  --done-bg: #f8eaf2;
  --note-accent: #d6447c;
  --note-bg: #fdeef5;
  --pending-accent: #f0879f;
  --pending-bg: #fff0f4;
  --done-accent: #a23e78;
  --badge-pending-bg: #fde3ec;
  --badge-pending-text: #c2447c;
  --badge-done-bg: #f0d9ea;
  --badge-done-text: #7a2f5c;
  --choco-accent: #9c6b46;
  --choco-accent-hover: #7d5236;
  --choco-bg: #f8f0e6;
  --choco-border: #e8d7c3;
  --choco-badge-bg: #f0e2d0;
  --choco-badge-text: #7d5236;
  --tomo-color: #e0538a;
  --tomo-tint: #fbe4ee;
  --kai-color: #5fa86a;
  --kai-tint: #e6f4e7;
  --mee-color: #e0893c;
  --mee-tint: #fbe9d7;
  --maron-color: #b6941f;
  --maron-tint: #f8f0d3;
}

* {
  box-sizing: border-box;
}

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

.app {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.app-header h1 {
  font-size: 1.6rem;
  margin: 0 0 20px;
}

.calendar-section {
  margin-bottom: 20px;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.calendar-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.calendar-nav-btn {
  width: 32px;
  height: 32px;
  background: #fff;
  border: 1px solid var(--choco-accent);
  color: var(--choco-accent);
  border-radius: 999px;
  font-size: 0.85rem;
  cursor: pointer;
}

.calendar-nav-btn:hover {
  background: var(--choco-accent);
  color: #fff;
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin-bottom: 4px;
}

.calendar-weekdays div {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 4px 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
  background: var(--choco-border);
  padding: 3px;
  border-radius: 10px;
}

.calendar-day {
  position: relative;
  aspect-ratio: 1;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 4px 0 0 6px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  background: linear-gradient(155deg, #fbf4ea 0%, var(--choco-bg) 55%, #f0ddc4 100%);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.8), inset 0 -2px 3px rgba(124, 82, 54, 0.2);
  border: none;
}

.calendar-day:hover {
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.8), inset 0 -2px 3px rgba(124, 82, 54, 0.35),
    0 0 0 1px var(--choco-accent);
}

.calendar-day.empty {
  visibility: hidden;
  cursor: default;
  box-shadow: none;
  background: transparent;
}

.calendar-day.today {
  font-weight: 700;
  color: var(--choco-accent-hover);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.8), inset 0 -2px 3px rgba(124, 82, 54, 0.2),
    0 0 0 2px var(--choco-accent);
}

.calendar-day.selected {
  background: linear-gradient(155deg, #b98a5e 0%, var(--choco-accent) 55%, var(--choco-accent-hover) 100%);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.35), inset 0 -2px 3px rgba(0, 0, 0, 0.3);
  color: #fff;
}

.calendar-day .event-dot {
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--choco-accent-hover);
}

.calendar-day.selected .event-dot {
  background: #fff;
}

.calendar-day-detail {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--choco-border);
}

.selected-date-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-bottom: 4px;
}

.selected-date-row h3 {
  flex: 1;
  min-width: 160px;
}

.calendar-hint {
  margin: 0 0 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.selected-date-row input[type="date"] {
  padding: 6px 8px;
  border: 1px solid var(--choco-border);
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--choco-accent-hover);
  background: var(--choco-bg);
}

.calendar-day-detail h3 {
  margin: 0;
  font-size: 0.95rem;
  color: var(--choco-accent);
}

.event-item {
  border: 1px solid var(--choco-border);
  border-left: 4px solid var(--choco-accent);
  border-radius: 8px;
  padding: 8px 12px;
  background: var(--choco-bg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.event-item .status-badge {
  background: var(--choco-badge-bg);
  color: var(--choco-badge-text);
}

.main-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

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

.panel h2 {
  font-size: 1rem;
  margin: 0 0 12px;
}

.panel h2:not(:first-child) {
  margin-top: 24px;
}

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

.form input,
.form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
}

.time-range {
  display: flex;
  align-items: center;
  gap: 6px;
}

.time-range input {
  flex: 0 0 auto;
  width: 118px;
  padding: 8px 8px;
}

.time-range-separator {
  color: var(--text-muted);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.person-selector {
  display: flex;
  gap: 6px;
}

.person-option {
  flex: 1;
  cursor: pointer;
}

.person-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.person-option span {
  display: block;
  text-align: center;
  padding: 8px 4px;
  border: 1px solid var(--choco-border);
  border-radius: 8px;
  background: var(--choco-bg);
  color: var(--choco-accent-hover);
  font-size: 0.85rem;
}

.person-option input:checked + span {
  background: var(--choco-accent);
  border-color: var(--choco-accent);
  color: #fff;
  font-weight: 600;
}

.person-tomo span { color: var(--tomo-color); background: var(--tomo-tint); }
.person-tomo input:checked + span { background: var(--tomo-color); border-color: var(--tomo-color); }

.person-kai span { color: var(--kai-color); background: var(--kai-tint); }
.person-kai input:checked + span { background: var(--kai-color); border-color: var(--kai-color); }

.person-mee span { color: var(--mee-color); background: var(--mee-tint); }
.person-mee input:checked + span { background: var(--mee-color); border-color: var(--mee-color); }

.person-maron span { color: var(--maron-color); background: var(--maron-tint); }
.person-maron input:checked + span { background: var(--maron-color); border-color: var(--maron-color); }

.event-item .person-badge-tomo { background: var(--tomo-tint); color: var(--tomo-color); }
.event-item .person-badge-kai { background: var(--kai-tint); color: var(--kai-color); }
.event-item .person-badge-mee { background: var(--mee-tint); color: var(--mee-color); }
.event-item .person-badge-maron { background: var(--maron-tint); color: var(--maron-color); }

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form button {
  align-self: flex-start;
  padding: 9px 22px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-size: 0.9rem;
  cursor: pointer;
}

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

.calendar-section .form input:focus,
.calendar-section .form textarea:focus {
  border-color: var(--choco-accent);
}

.calendar-section .form button {
  background: var(--choco-accent);
}

.calendar-section .form button:hover {
  background: var(--choco-accent-hover);
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 420px;
  overflow-y: auto;
}

.list .empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 8px 0;
}

.note-item {
  border: 1px solid var(--border);
  border-left: 4px solid var(--note-accent);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--note-bg);
}

.note-item .item-title {
  font-weight: 600;
  color: var(--note-accent);
  margin-bottom: 4px;
}

.note-item .item-body {
  white-space: pre-wrap;
  font-size: 0.9rem;
  color: var(--text);
  margin-bottom: 6px;
}

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

.task-item {
  border: 1px solid var(--border);
  border-left: 4px solid var(--pending-accent);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--pending-bg);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.task-item.completed {
  border-left-color: var(--done-accent);
  background: var(--done-bg);
}

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

.status-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--badge-pending-bg);
  color: var(--badge-pending-text);
}

.task-item.completed .status-badge {
  background: var(--badge-done-bg);
  color: var(--badge-done-text);
}

.task-item input[type="checkbox"] {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  cursor: pointer;
  flex-shrink: 0;
}

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

.task-title {
  font-size: 0.95rem;
  word-break: break-word;
}

.icon-btn {
  background: #fff;
  border: 1px solid var(--danger);
  color: var(--danger);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.icon-btn:hover {
  background: var(--danger);
  color: #fff;
}

@media (max-width: 700px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}