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

:root {
  --bg: #f5f6fa;
  --card: #ffffff;
  --primary: #4f7cff;
  --primary-dark: #3a63e0;
  --text: #1f2335;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --accent: #ff7a59;
  --weekend: #fff5f5;
  --today: #eef2ff;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 14px;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.app-header {
  text-align: center;
  margin-bottom: 24px;
}

.app-header h1 {
  font-size: 28px;
  font-weight: 700;
}

.subtitle {
  color: var(--text-light);
  font-size: 13px;
  margin-top: 6px;
}

/* Input Section */
.input-section {
  background: var(--card);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 2px 12px rgba(31, 35, 53, 0.06);
  margin-bottom: 20px;
}

.input-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

#scheduleInput {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color 0.2s;
}

#scheduleInput:focus {
  border-color: var(--primary);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 0 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: #f0f1f5;
  color: var(--text);
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: #e4e6ec;
}

.parse-preview {
  margin-top: 16px;
  padding: 16px;
  background: #f9faff;
  border: 1px dashed var(--primary);
  border-radius: 10px;
}

.preview-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 12px;
}

.preview-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.preview-fields label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--text-light);
  gap: 4px;
}

.preview-fields label.all-day-label {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text);
  padding-top: 22px;
}

.preview-fields input[type="text"],
.preview-fields input[type="date"],
.preview-fields input[type="time"] {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
}

.preview-fields input:focus {
  border-color: var(--primary);
}

.preview-actions {
  display: flex;
  gap: 8px;
}

/* 周期设置行 */
.recurrence-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
}
.recurrence-row label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-light);
}
.recurrence-row select,
.recurrence-row input[type="number"],
.recurrence-row input[type="date"] {
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}
.recurrence-row select:focus,
.recurrence-row input:focus {
  outline: none;
  border-color: var(--primary);
}

/* 周期事件视觉标识：左侧紫色条 */
.event-chip.recurring,
.event-block.recurring {
  border-left: 3px solid #6366f1;
}
.event-chip.recurring {
  padding-left: 4px;
}

/* Share Bar */
.share-bar {
  background: var(--card);
  border-radius: 14px;
  padding: 14px 18px;
  box-shadow: 0 2px 12px rgba(31, 35, 53, 0.06);
  margin-bottom: 20px;
}

.share-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.share-mode-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: #f0f1f5;
  color: var(--text-light);
}

.share-mode-tag.active {
  background: #e8f5ff;
  color: var(--primary);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
  border-radius: 7px;
}

.btn-danger {
  background: #fee;
  color: #e53e3e;
  border: 1px solid #fecaca;
  border-radius: 7px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-danger:hover {
  background: #fdd;
}

.share-or {
  color: var(--text-light);
  font-size: 12px;
  padding: 0 2px;
}

.share-code-input {
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 10px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  width: 160px;
  transition: border-color 0.2s;
}

.share-code-input:focus {
  border-color: var(--primary);
}

.share-link-input {
  flex: 1;
  min-width: 200px;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 10px;
  font-size: 12px;
  font-family: monospace;
  color: var(--text);
  background: #f9faff;
  outline: none;
}

/* Calendar Section */
.calendar-section {
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 2px 12px rgba(31, 35, 53, 0.06);
  margin-bottom: 20px;
}

.calendar-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.nav-group {
  display: flex;
  gap: 6px;
  align-items: center;
}

.btn-icon {
  background: #f0f1f5;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  font-size: 18px;
  cursor: pointer;
  color: var(--text);
  transition: background 0.2s;
}

.btn-icon:hover {
  background: #e4e6ec;
}

.range-label {
  font-size: 17px;
  font-weight: 600;
}

.view-switch {
  display: flex;
  background: #f0f1f5;
  border-radius: 8px;
  padding: 3px;
}

.view-btn {
  background: transparent;
  border: none;
  padding: 6px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-light);
  transition: all 0.2s;
}

.view-btn.active {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.calendar-view {
  overflow-x: auto;
}

/* Month View */
.month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  min-width: 700px;
}

.month-grid .day-name {
  background: #fafbfc;
  padding: 8px;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
  border-bottom: 1px solid var(--border);
}

.month-grid .day-name.weekend {
  color: var(--accent);
}

.month-cell {
  min-height: 92px;
  padding: 4px 6px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  transition: background 0.15s;
  overflow: hidden;
}

.month-cell:hover {
  background: #f9faff;
}

.month-cell.other-month {
  background: #fafbfc;
  color: var(--text-light);
}

.month-cell.today {
  background: var(--today);
}

.month-cell .date-num {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 2px;
}

.month-cell.today .date-num {
  color: var(--primary);
}

.month-cell .event-chip {
  background: var(--primary);
  color: #fff;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 3px;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.month-cell .event-chip.all-day {
  background: var(--accent);
}

.month-cell .more-link {
  font-size: 10px;
  color: var(--text-light);
  cursor: pointer;
}

/* Week View */
.week-grid {
  display: grid;
  grid-template-columns: 60px repeat(7, 1fr);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  min-width: 700px;
}

.week-grid .corner {
  background: #fafbfc;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.week-grid .day-header {
  background: #fafbfc;
  padding: 8px 4px;
  text-align: center;
  font-size: 12px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.week-grid .day-header .weekday-name {
  color: var(--text-light);
  font-size: 11px;
}

.week-grid .day-header .weekday-date {
  font-size: 16px;
  font-weight: 600;
  margin-top: 2px;
}

.week-grid .day-header.today .weekday-date {
  color: var(--primary);
}

.week-grid .time-label {
  padding: 4px;
  font-size: 10px;
  color: var(--text-light);
  text-align: right;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: #fafbfc;
}

.week-grid .time-slot {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  min-height: 24px;
  position: relative;
  cursor: pointer;
}

.week-grid .time-slot:hover {
  background: #f9faff;
}

.week-grid .event-block {
  position: absolute;
  left: 2px;
  right: 2px;
  background: var(--primary);
  color: #fff;
  font-size: 11px;
  padding: 3px 5px;
  border-radius: 4px;
  overflow: hidden;
  z-index: 2;
  cursor: pointer;
}

.week-grid .event-block.all-day-block {
  background: var(--accent);
}

.week-grid .event-block .event-time {
  font-size: 9px;
  opacity: 0.85;
}

/* Day View */
.day-grid {
  display: grid;
  grid-template-columns: 80px 1fr;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.day-grid .day-label,
.day-grid .day-slot {
  border-bottom: 1px solid var(--border);
}

.day-grid .day-label {
  padding: 6px;
  font-size: 11px;
  color: var(--text-light);
  text-align: right;
  background: #fafbfc;
  border-right: 1px solid var(--border);
  min-height: 30px;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
}

.day-grid .day-slot {
  position: relative;
  min-height: 30px;
  cursor: pointer;
}

.day-grid .day-slot:hover {
  background: #f9faff;
}

.day-grid .event-block {
  position: absolute;
  left: 4px;
  right: 4px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
}

.day-grid .event-block.all-day-block {
  background: var(--accent);
}

.day-grid .event-block .event-time {
  font-size: 10px;
  opacity: 0.85;
}

.empty-state {
  padding: 40px;
  text-align: center;
  color: var(--text-light);
  font-size: 13px;
}

/* Events List */
.events-list {
  background: var(--card);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 2px 12px rgba(31, 35, 53, 0.06);
}

.events-list h3 {
  font-size: 16px;
  margin-bottom: 12px;
}

.events-list ul {
  list-style: none;
}

.events-list li {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.events-list li .event-info {
  flex: 1;
}

.events-list li .event-title {
  font-weight: 600;
  font-size: 14px;
}

.events-list li .event-meta {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}

.events-list li .event-date-badge {
  background: var(--today);
  color: var(--primary);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.events-list li .event-date-badge.all-day-badge {
  background: #fff0eb;
  color: var(--accent);
}

.events-list li.past {
  opacity: 0.55;
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  border-radius: 4px;
}

.delete-btn:hover {
  color: #e53e3e;
  background: #fee;
}

/* 整组周期删除按钮 */
.delete-group-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-light);
  cursor: pointer;
  font-size: 12px;
  padding: 4px 6px;
  border-radius: 6px;
  letter-spacing: -1px;
}
.delete-group-btn:hover {
  color: #6366f1;
  border-color: #6366f1;
  background: #eef2ff;
}

.empty-list {
  color: var(--text-light);
  font-size: 13px;
  text-align: center;
  padding: 20px;
}

@media (max-width: 600px) {
  .input-row {
    flex-direction: column;
  }
  .btn-primary {
    padding: 12px;
  }
  .calendar-toolbar {
    justify-content: center;
  }
  .range-label {
    width: 100%;
    text-align: center;
    order: -1;
  }
}