:root {
  --bg-primary: #f0f2f5;
  --bg-surface: #ffffff;
  --bg-elevated: rgba(255, 255, 255, 0.72);
  --bg-elevated-heavy: rgba(255, 255, 255, 0.88);
  --bg-input: rgba(0, 0, 0, 0.03);
  --bg-input-hover: rgba(0, 0, 0, 0.06);
  --bg-input-active: rgba(0, 0, 0, 0.09);

  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-heavy: rgba(255, 255, 255, 0.85);
  --glass-bg-light: rgba(255, 255, 255, 0.5);
  --glass-border: rgba(255, 255, 255, 0.35);
  --glass-border-bright: rgba(255, 255, 255, 0.55);
  --glass-blur: 24px;
  --glass-blur-heavy: 36px;
  --glass-saturate: 180%;

  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --text-on-accent: #ffffff;

  --accent-blue: #0071e3;
  --accent-blue-hover: #0077ed;
  --accent-blue-active: #0066cc;

  --border-soft: rgba(0, 0, 0, 0.06);
  --border-medium: rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.03);
  --shadow-glass: 0 2px 16px rgba(0, 0, 0, 0.03), 0 1px 3px rgba(0, 0, 0, 0.04);

  --bubble-bg: rgba(0, 113, 227, 0.14);
  --bubble-border: rgba(0, 113, 227, 0.2);
  --bubble-highlight: rgba(255, 255, 255, 0.5);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 980px;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-normal: 250ms var(--ease-out);
  --transition-slow: 400ms var(--ease-out);
  --transition-spring: 500ms var(--ease-spring);

  --font-size-xs: 11px;
  --font-size-sm: 14px;
  --font-size-base: 17px;
  --font-size-lg: 21px;
  --font-size-xl: 28px;
  --font-size-2xl: 36px;

  --spacing-xs: 6px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  --nav-height: 64px;
  --header-height: 56px;
  --safe-area-top: env(safe-area-inset-top);
  --safe-area-bottom: env(safe-area-inset-bottom);

  --nav-bubble-x: 0px;
}

[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-surface: #1c1c1e;
  --bg-elevated: rgba(40, 40, 42, 0.72);
  --bg-elevated-heavy: rgba(50, 50, 52, 0.85);
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-input-hover: rgba(255, 255, 255, 0.1);
  --bg-input-active: rgba(255, 255, 255, 0.14);

  --glass-bg: rgba(40, 40, 42, 0.72);
  --glass-bg-heavy: rgba(50, 50, 52, 0.88);
  --glass-bg-light: rgba(60, 60, 62, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-bright: rgba(255, 255, 255, 0.15);

  --text-primary: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;

  --accent-blue: #0a84ff;
  --accent-blue-hover: #1a90ff;
  --accent-blue-active: #0071e3;

  --border-soft: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.12);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 6px 24px rgba(0, 0, 0, 0.3);
  --shadow-glass: 0 2px 16px rgba(0, 0, 0, 0.3);

  --bubble-bg: rgba(10, 132, 255, 0.22);
  --bubble-border: rgba(10, 132, 255, 0.35);
  --bubble-highlight: rgba(255, 255, 255, 0.15);

  --bg-overlay: rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] .logo-text {
  color: rgba(255, 255, 255, 0.92);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .logo-icon {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.4));
}

[data-theme="dark"] .header-btn {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.88);
}

[data-theme="dark"] .header-btn:hover {
  background: rgba(255, 255, 255, 0.16);
}

[data-theme="dark"] .header-btn:active {
  background: rgba(255, 255, 255, 0.22);
}

:root {
  --bg-overlay: transparent;
}

:root[data-emotion="anxiety"] {
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
:root[data-emotion="stress"] {
  --bg-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}
:root[data-emotion="anger"] {
  --bg-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}
:root[data-emotion="sadness"] {
  --bg-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}
:root[data-emotion="confusion"] {
  --bg-gradient: linear-gradient(135deg, #f2994a 0%, #f2c94c 100%);
}
:root[data-emotion="tired"] {
  --bg-gradient: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
}
:root[data-emotion="thinking"] {
  --bg-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}
:root[data-emotion="depressed"] {
  --bg-gradient: linear-gradient(135deg, #232526 0%, #414345 100%);
}
:root[data-emotion="annoyed"] {
  --bg-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}
:root[data-emotion="troubled"] {
  --bg-gradient: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}
:root[data-emotion="disappointed"] {
  --bg-gradient: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
}
:root[data-emotion="helpless"] {
  --bg-gradient: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-gradient, linear-gradient(135deg, #667eea 0%, #764ba2 100%));
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  transition: background 0.6s var(--ease-out);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  pointer-events: none;
  z-index: 0;
  transition: background 0.6s var(--ease-out);
}

.app-container {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding-bottom: calc(var(--nav-height) + var(--safe-area-bottom) + var(--spacing-md));
  padding-top: var(--safe-area-top);
}

/* ==================== 顶部 Header ==================== */
.app-header {
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  position: relative;
  flex-wrap: wrap;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.logo-icon {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.15));
}

.logo-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: white;
  letter-spacing: -0.02em;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.header-tools {
  display: flex;
  gap: var(--spacing-xs);
}

.header-btn {
  width: 38px;
  height: 38px;
  border: none;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all var(--transition-fast);
}

.header-btn svg {
  width: 18px;
  height: 18px;
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.28);
  transform: scale(1.05);
}

.header-btn:active {
  transform: scale(0.92);
  background: rgba(255, 255, 255, 0.35);
}

/* ==================== 搜索页面 ==================== */
.search-container {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.search-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--glass-border-bright), transparent);
  pointer-events: none;
}

.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0 var(--spacing-md);
  background: var(--bg-input);
  border-radius: var(--radius-full);
  height: 44px;
  margin-bottom: var(--spacing-md);
  transition: background var(--transition-fast);
}

.search-input-wrap:focus-within {
  background: var(--bg-input-hover);
}

.search-icon {
  width: 18px;
  height: 18px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--text-primary);
  height: 100%;
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.search-clear {
  width: 24px;
  height: 24px;
  border: none;
  background: var(--bg-input-hover);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.search-clear svg {
  width: 12px;
  height: 12px;
}

.search-clear:hover {
  background: var(--bg-input-active);
}

.search-clear:active {
  transform: scale(0.85);
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  min-height: 120px;
}

.search-empty {
  text-align: center;
  color: var(--text-tertiary);
  padding: var(--spacing-xl);
  font-size: var(--font-size-sm);
}

.search-item {
  padding: var(--spacing-sm);
  background: var(--bg-input);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  cursor: pointer;
  animation: searchItemEnter 250ms var(--ease-out) forwards;
}

@keyframes searchItemEnter {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.search-item:hover {
  background: var(--bg-input-hover);
}

.search-emoji {
  font-size: 20px;
  margin-right: var(--spacing-sm);
}

.search-content {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  line-height: 1.5;
  display: inline;
}

.search-date {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

/* ==================== 底部导航 - Telegram风格液态玻璃气泡 ==================== */
.bottom-nav {
  position: fixed;
  bottom: calc(var(--safe-area-bottom) + var(--spacing-sm));
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  padding: 6px;
  background: var(--glass-bg-heavy);
  backdrop-filter: blur(var(--glass-blur-heavy)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur-heavy)) saturate(var(--glass-saturate));
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border-bright);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.12),
    0 2px 8px rgba(0, 0, 0, 0.06),
    inset 0 1px 0 var(--bubble-highlight),
    inset 0 -1px 0 rgba(0, 0, 0, 0.04);
  overflow: hidden;
}

.nav-items {
  display: flex;
  align-items: center;
  gap: 2px;
  position: relative;
  z-index: 2;
}

.nav-item {
  width: 52px;
  height: 52px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  position: relative;
  z-index: 3;
  transition: color var(--transition-normal), transform var(--transition-spring);
}

.nav-item svg {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-spring);
}

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

.nav-item:hover svg {
  transform: scale(1.1);
}

.nav-item:active svg {
  transform: scale(0.88);
}

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

.nav-item.active svg {
  transform: scale(1.05);
  filter: drop-shadow(0 2px 6px rgba(0, 113, 227, 0.3));
}

/* 滑动气泡 - 液态玻璃效果 */
.nav-bubble {
  position: absolute;
  top: 6px;
  left: 6px;
  width: 52px;
  height: 52px;
  background: var(--bubble-bg);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border-radius: 50%;
  border: 1px solid var(--bubble-border);
  box-shadow:
    inset 0 1px 1px var(--bubble-highlight),
    inset 0 -1px 1px rgba(0, 0, 0, 0.05),
    0 2px 8px rgba(0, 113, 227, 0.18);
  transform: translateX(var(--nav-bubble-x)) scale(1);
  transition: transform 500ms var(--ease-spring);
  z-index: 1;
  pointer-events: none;
}

.nav-bubble::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 20%;
  right: 20%;
  height: 30%;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), transparent);
  border-radius: 50%;
  pointer-events: none;
}

.nav-bubble.bouncing {
  animation: bubbleBounce 600ms var(--ease-spring);
}

@keyframes bubbleBounce {
  0% { transform: translateX(var(--nav-bubble-x)) scale(1); }
  40% { transform: translateX(var(--nav-bubble-x)) scale(1.15, 0.85); }
  70% { transform: translateX(var(--nav-bubble-x)) scale(0.92, 1.08); }
  100% { transform: translateX(var(--nav-bubble-x)) scale(1); }
}

/* ==================== 主内容区 ==================== */
.main-content {
  padding: var(--spacing-md);
  max-width: 480px;
  margin: 0 auto;
}

.page {
  display: none;
  animation: pageEnter 350ms var(--ease-out) forwards;
}

.page.active {
  display: block;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.99);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ==================== 玻璃卡片 - 去除多余线条 ==================== */
.record-card,
.emoji-picker,
.calendar-container,
.category-list,
.trend-container {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

/* 单一顶部高光线，不再有多余线条 */
.record-card::before,
.emoji-picker::before,
.calendar-container::before,
.category-list::before,
.trend-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--glass-border-bright), transparent);
  pointer-events: none;
}

.glass-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-xl);
  background: var(--accent-blue);
  color: var(--text-on-accent);
  border: none;
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: 500;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.glass-btn:hover {
  background: var(--accent-blue-hover);
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}

.glass-btn:active {
  background: var(--accent-blue-active);
  transform: scale(0.97);
}

.glass-btn.secondary {
  background: var(--bg-input-hover);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.glass-btn.secondary:hover {
  background: var(--bg-input-active);
}

.btn-icon {
  font-size: var(--font-size-lg);
}

/* ==================== 记录页 ==================== */
.record-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.emoji-picker {
  padding: var(--spacing-md);
}

.picker-header {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  text-align: center;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-sm);
}

.emoji-btn {
  width: 100%;
  aspect-ratio: 1;
  font-size: 24px;
  background: var(--bg-input);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.emoji-btn:hover {
  background: var(--bg-input-hover);
  transform: scale(1.1);
}

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

.emoji-btn.selected {
  background: var(--accent-blue);
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.35);
}

.record-card {
  position: relative;
  overflow: hidden;
  touch-action: none;
  transition: transform var(--transition-fast);
}

.record-card:active {
  transform: scale(0.99);
}

.selected-emoji {
  font-size: 56px;
  text-align: center;
  margin-bottom: var(--spacing-md);
  animation: emojiBreathe 4s ease-in-out infinite;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

@keyframes emojiBreathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.record-input,
.analysis-input {
  width: 100%;
  font-family: inherit;
  background: var(--bg-input);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  resize: none;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
  color: var(--text-primary);
}

.record-input {
  min-height: 100px;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
}

.analysis-input {
  min-height: 60px;
  padding: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.record-input:focus,
.analysis-input:focus {
  border-color: var(--accent-blue);
  background: var(--bg-input-hover);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}

.record-input::placeholder,
.analysis-input::placeholder {
  color: var(--text-tertiary);
}

.analysis-section {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.analysis-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.analysis-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.record-actions {
  margin-top: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
}

.record-actions button {
  flex: 1;
}

/* ==================== 垃圾箱 ==================== */
.trash-bin {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  background: var(--glass-bg-light);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
  position: relative;
}

.trash-bin:hover {
  background: var(--glass-bg);
  transform: scale(1.01);
}

.trash-bin.active {
  animation: trashPulse 0.8s ease-in-out infinite;
}

@keyframes trashPulse {
  0%, 100% {
    transform: scale(1);
    border-color: var(--accent-blue);
    background: var(--bubble-bg);
  }
  50% {
    transform: scale(1.05);
    border-color: #ff6b6b;
    background: rgba(255, 107, 107, 0.12);
  }
}

.trash-icon {
  font-size: 52px;
  margin-bottom: var(--spacing-sm);
  transition: transform var(--transition-fast);
}

.trash-bin:hover .trash-icon {
  transform: scale(1.1);
}

.trash-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

/* ==================== 月历 ==================== */
.calendar-container {
  padding: var(--spacing-md);
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--bg-input);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.nav-btn svg {
  width: 18px;
  height: 18px;
}

.nav-btn:hover {
  background: var(--bg-input-hover);
  color: var(--text-primary);
}

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

.current-month {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

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

.weekday {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  padding: var(--spacing-xs);
  font-weight: 500;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-xs);
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
  font-size: var(--font-size-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.calendar-day > span:first-child {
  flex-shrink: 0;
}

.calendar-day:hover {
  background: var(--bg-input-hover);
  transform: scale(1.05);
}

.calendar-day:active {
  transform: scale(0.92);
}

.calendar-day.today {
  background: var(--accent-blue);
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.calendar-day.has-record {
  background: var(--bubble-bg);
}

.calendar-day .day-emoji {
  font-size: 14px;
  position: absolute;
  bottom: 2px;
}

.calendar-day.other-month {
  color: var(--text-tertiary);
  background: transparent;
}

.day-detail {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-soft);
}

.detail-date {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.detail-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.detail-item {
  padding: var(--spacing-sm);
  background: var(--bg-input);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.detail-item:hover {
  background: var(--bg-input-hover);
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  padding: 4px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  opacity: 0;
}

.detail-item:hover .delete-btn,
.group-item:hover .delete-btn,
.search-item:hover .delete-btn {
  opacity: 1;
}

.delete-btn:hover {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.delete-btn:active {
  transform: scale(0.95);
}

.detail-emoji {
  font-size: 20px;
  margin-right: var(--spacing-sm);
}

.detail-content {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  line-height: 1.5;
}

/* ==================== 分类 ==================== */
.category-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.category-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}

.category-stat {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  padding: var(--spacing-md);
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.category-stat:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.category-stat:active {
  transform: scale(0.97);
}

.stat-emoji {
  font-size: 24px;
  margin-bottom: var(--spacing-xs);
}

.stat-count {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.category-list {
  padding: var(--spacing-md);
}

.category-group {
  margin-bottom: var(--spacing-lg);
}

.category-group:last-child {
  margin-bottom: 0;
}

.group-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.group-emoji {
  font-size: 24px;
}

.group-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
}

.group-count {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-left: auto;
}

.group-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.group-item {
  padding: var(--spacing-sm);
  background: var(--bg-input);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.group-item:hover {
  background: var(--bg-input-hover);
}

.item-content {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  line-height: 1.5;
}

.item-date {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

/* ==================== 趋势 ==================== */
.trend-container {
  padding: var(--spacing-md);
}

.trend-header {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.period-btn {
  flex: 1;
  padding: var(--spacing-sm);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--bg-input);
  color: var(--text-secondary);
}

.period-btn:hover {
  background: var(--bg-input-hover);
}

.period-btn:active {
  transform: scale(0.97);
}

.period-btn.active {
  background: var(--accent-blue);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.chart-container {
  height: 220px;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.trend-summary {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
  background: var(--bg-input);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.summary-item:hover {
  background: var(--bg-input-hover);
}

.summary-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.summary-value {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
}

/* ==================== Toast ==================== */
.toast {
  position: fixed;
  bottom: calc(var(--nav-height) + var(--spacing-xl) + var(--safe-area-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--spacing-md) var(--spacing-xl);
  background: rgba(0, 0, 0, 0.85);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
  pointer-events: none;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  max-width: calc(100% - 48px);
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==================== 粒子 ==================== */
.floating-particle {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
}

@keyframes particleFloat {
  0% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-100px) scale(0); }
}

/* ==================== 无障碍 ==================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .selected-emoji { animation: none; }
  .nav-bubble { transition: none; }
}

@media (prefers-reduced-transparency: reduce) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-bg-heavy: rgba(255, 255, 255, 0.98);
    --glass-blur: 4px;
  }
  [data-theme="dark"] {
    --glass-bg: rgba(40, 40, 42, 0.95);
    --glass-bg-heavy: rgba(50, 50, 52, 0.98);
  }
}

@media (prefers-contrast: more) {
  :root {
    --border-soft: rgba(0, 0, 0, 0.2);
    --text-secondary: #4a4a4a;
  }
}

@media (max-width: 375px) {
  :root {
    --font-size-base: 16px;
    --spacing-md: 14px;
    --spacing-lg: 20px;
  }
  .main-content { padding: var(--spacing-sm); }
  .emoji-btn { font-size: 22px; }
  .nav-item { width: 46px; height: 46px; }
  .nav-bubble { width: 46px; height: 46px; }
}

@media (max-width: 320px) {
  :root {
    --font-size-base: 15px;
    --radius-lg: 16px;
  }
  .nav-item { width: 42px; height: 42px; }
  .nav-bubble { width: 42px; height: 42px; }
}