* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --font-size-base: 16px;
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #8b5cf6;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --background-color: #f8fafc;
  --card-background: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --corner-radius: 16px;
  --corner-radius-sm: 12px;
  --corner-radius-lg: 50%;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-nav: 0 -2px 10px rgba(0, 0, 0, 0.05);
  --spacing-base: 16px;
  --spacing-sm: 12px;
  --spacing-lg: 20px;
  --transition-duration: 0.2s;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  line-height: 1.5;
  height: 100vh;
  height: 100dvh;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--background-color);
  position: relative;
}

#main-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  padding-bottom: 90px;
}

#bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 600px;
  display: flex;
  background-color: var(--card-background);
  border-top: 1px solid var(--border-color);
  padding: 8px 0;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  z-index: 100;
  box-shadow: var(--shadow-nav);
}

#bottom-nav.top-nav {
  bottom: auto;
  top: 0;
  border-top: none;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-secondary);
  transition: all var(--transition-duration);
}

.nav-item.active {
  color: var(--primary-color);
}

.nav-icon {
  font-size: 24px;
}



.card {
  background-color: var(--card-background);
  border-radius: var(--corner-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-base);
  box-shadow: var(--shadow-card);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: none;
  border-radius: var(--corner-radius-sm);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-duration);
  width: 100%;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

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

.btn-secondary {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-success {
  background-color: var(--success-color);
  color: white;
}

.btn-timer {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 700;
  margin: 24px auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.btn-timer.running {
  background-color: var(--danger-color);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.timer-display {
  font-size: 48px;
  font-weight: 700;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  text-align: center;
  margin: 24px 0;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-size: 16px;
  background-color: var(--card-background);
  color: var(--text-primary);
  transition: border-color 0.2s;
}

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

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

.input-col {
  flex: 1;
}

.tab-buttons {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.tab-btn {
  flex: 1;
  padding: 12px 16px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background-color: var(--border-color);
  color: var(--text-secondary);
  transition: all 0.2s;
}

.tab-btn.active {
  background-color: var(--primary-color);
  color: white;
}

.record-group {
  margin-bottom: 24px;
}

.group-header {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-left: 4px;
}

.record-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background-color: var(--card-background);
  border-radius: 12px;
  margin-bottom: 8px;
}

.record-info {
  flex: 1;
}

.record-time {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.record-duration {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.record-duration-diff {
  font-size: 13px;
  font-weight: 600;
  margin-top: 4px;
}

.record-duration-diff.duration-faster {
  color: var(--danger-color);
}

.record-duration-diff.duration-slower {
  color: var(--success-color);
}

.record-medium {
  font-size: 13px;
  color: var(--primary-color);
  font-weight: 500;
  margin-top: 4px;
}

.record-notes {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
  font-style: italic;
}

.record-edit, .record-delete {
  padding: 8px 12px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  border-radius: 8px;
  transition: background-color 0.2s;
}

.record-edit {
  color: var(--primary-color);
}

.record-edit:hover, .record-edit:active {
  background-color: rgba(99, 102, 241, 0.1);
}

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

.record-delete:hover, .record-delete:active {
  background-color: rgba(239, 68, 68, 0.1);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

@media (min-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-card {
  background-color: var(--card-background);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-change {
  font-size: 12px;
  margin-top: 4px;
  font-weight: 600;
}

.stat-change.positive {
  color: var(--danger-color);
}

.stat-change.negative {
  color: var(--success-color);
}

.date-range {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.date-range .form-input {
  flex: 1;
}

.settings-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-color);
}

.settings-item:last-child {
  border-bottom: none;
}

.settings-label {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
}

.settings-select {
  padding: 10px 16px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-size: 16px;
  background-color: var(--card-background);
  color: var(--text-primary);
  cursor: pointer;
}

.settings-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-color);
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.empty-state-text {
  font-size: 16px;
}

.hidden {
  display: none !important;
}

.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background-color: var(--text-primary);
  color: white;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  z-index: 1000;
  transition: transform 0.3s ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.light-theme {
  --background-color: #f8fafc;
  --card-background: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
}

.dark-theme {
  --background-color: #0f172a;
  --card-background: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --border-color: #334155;
}

.light-theme.purple-theme {
  --primary-color: #8b5cf6;
  --primary-dark: #7c3aed;
  --secondary-color: #a855f7;
}

.dark-theme.purple-theme {
  --primary-color: #a855f7;
  --primary-dark: #9333ea;
  --secondary-color: #c084fc;
}

.light-theme.green-theme {
  --primary-color: #10b981;
  --primary-dark: #059669;
  --secondary-color: #34d399;
}

.dark-theme.green-theme {
  --primary-color: #34d399;
  --primary-dark: #10b981;
  --secondary-color: #6ee7b7;
}

.light-theme.orange-theme {
  --primary-color: #f97316;
  --primary-dark: #ea580c;
  --secondary-color: #fb923c;
}

.dark-theme.orange-theme {
  --primary-color: #fb923c;
  --primary-dark: #f97316;
  --secondary-color: #fdba74;
}

.light-theme.pink-theme {
  --primary-color: #ec4899;
  --primary-dark: #db2777;
  --secondary-color: #f472b6;
}

.dark-theme.pink-theme {
  --primary-color: #f472b6;
  --primary-dark: #ec4899;
  --secondary-color: #f9a8d4;
}

.light-theme.cyan-theme {
  --primary-color: #06b6d4;
  --primary-dark: #0891b2;
  --secondary-color: #22d3ee;
}

.dark-theme.cyan-theme {
  --primary-color: #22d3ee;
  --primary-dark: #06b6d4;
  --secondary-color: #67e8f9;
}

body {
  transition: background-color 0.3s ease, color 0.3s ease;
}

.card, #bottom-nav, .record-item, .form-input, .settings-select {
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.modal-content {
  background-color: var(--card-background);
  border-radius: 16px;
  width: 100%;
  max-width: 400px;
  max-height: 80vh;
  overflow-y: auto;
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  margin: 0;
  font-size: 18px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-body {
  padding: 20px;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: 0.3s;
  border-radius: 28px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--primary-color);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(24px);
}

/* 日历模块样式 */
.calendar-container {
  margin-bottom: var(--spacing-base);
}

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

.calendar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.calendar-nav-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 16px;
  cursor: pointer;
  color: var(--text-primary);
  transition: all 0.2s;
}

.calendar-nav-btn:hover {
  background-color: var(--border-color);
}

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

.calendar-day-header {
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 0;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  border-radius: 8px;
  cursor: default;
  transition: all 0.2s;
}

/* 六种记录次数颜色 */
.calendar-day-count-0 {
  background-color: transparent;
  color: var(--text-primary);
}

.calendar-day-count-1 {
  background-color: #fce7f3;
  color: #9d174d;
}

.calendar-day-count-2 {
  background-color: #fbcfe8;
  color: #9d174d;
}

.calendar-day-count-3 {
  background-color: #f9a8d4;
  color: #9d174d;
}

.calendar-day-count-4 {
  background-color: #f472b6;
  color: white;
}

.calendar-day-count-5 {
  background-color: #ec4899;
  color: white;
}

.calendar-day-count-6-plus {
  background-color: #db2777;
  color: white;
}

.calendar-day.other-month {
  color: var(--text-secondary);
  opacity: 0.5;
}

.calendar-day.today {
  font-weight: 700;
  border: 2px solid var(--primary-color);
}

/* 日历可收起区域 */
.records-calendar-section {
  margin-bottom: var(--spacing-base);
  flex-shrink: 0;
}

/* 日历收起状态下的头部栏 */
.calendar-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--card-background);
  border-radius: var(--corner-radius);
  padding: 10px var(--spacing-lg);
  margin-bottom: 0;
  box-shadow: var(--shadow-card);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s;
}

.calendar-header-bar:active {
  background-color: var(--border-color);
}

.calendar-toggle-indicator {
  font-size: 12px;
  color: var(--text-secondary);
  transition: transform 0.3s;
}

/* 日历日期可点击 */
.calendar-day[data-date] {
  cursor: pointer;
}

.calendar-day[data-date]:active {
  opacity: 0.7;
}

/* 日历选中日期 */
.calendar-day.selected {
  background-color: var(--primary-color) !important;
  color: white !important;
  font-weight: 700;
}

/* 记录面板 - 独立滚动 */
.records-panel {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 90px;
}

.records-panel .card {
  margin-bottom: 0;
}

/* ─── JMComic 下载器 ─── */
#jm-code-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

#jm-code-input:focus {
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.jm-dl-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed !important;
}

#jm-chapters-list::-webkit-scrollbar {
  width: 4px;
}

#jm-chapters-list::-webkit-scrollbar-track {
  background: transparent;
}

#jm-chapters-list::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}

/* ─── JMComic 书架 ─── */
#bs-grid > div {
  transition: transform 0.15s, box-shadow 0.15s;
}

#bs-grid > div:active {
  transform: scale(0.96);
}

#bs-action-bar {
  box-shadow: 0 -2px 12px rgba(0,0,0,0.1);
}

.bs-act-btn:active {
  transform: scale(0.92);
}

.bs-filter-item:hover,
.bs-filter-item:active {
  background: var(--bg-tertiary, #e8e8e8) !important;
}

.bs-sel-hidden {
  display: none !important;
}