/* ============================================
   009-个人生活纪录网站 - 全局样式 + 多彩主题
   ============================================ */

/* --- CSS 变量定义 --- */
:root {
  /* 多彩主题色板 */
  --color-diary: #FF6B6B;
  --color-diary-light: #FFE0E0;
  --color-photos: #4ECDC4;
  --color-photos-light: #D4F5F2;
  --color-habits: #45B7D1;
  --color-habits-light: #D0EFF6;
  --color-health: #96CEB4;
  --color-health-light: #D8F0E4;
  --color-finance: #FFEAA7;
  --color-finance-light: #FFF8DC;
  --color-finance-accent: #FDCB6E;

  /* 中性色 */
  --color-bg: #F8F9FE;
  --color-surface: #FFFFFF;
  --color-text: #2D3436;
  --color-text-secondary: #636E72;
  --color-border: #E8ECF1;
  --color-shadow: rgba(0, 0, 0, 0.08);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-warm: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
  --gradient-cool: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
  --gradient-sky: linear-gradient(135deg, #45B7D1 0%, #6C5CE7 100%);
  --gradient-nature: linear-gradient(135deg, #96CEB4 0%, #55E6C1 100%);
  --gradient-gold: linear-gradient(135deg, #FDCB6E 0%, #F39C12 100%);

  /* 布局 */
  --sidebar-width: 240px;
  --sidebar-collapsed-width: 70px;
  --topbar-height: 64px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* --- 重置与基础 --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial,
    sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

img {
  max-width: 100%;
  display: block;
}

/* --- 布局容器 --- */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
}

.main-content.collapsed {
  margin-left: var(--sidebar-collapsed-width);
}

.page-header {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
}

.page-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.page-body {
  padding: 24px 32px;
  max-width: 1400px;
}

/* --- 统计概览卡片 --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 2px 12px var(--color-shadow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.stat-card[data-page='diary']::before { background: var(--gradient-warm); }
.stat-card[data-page='photos']::before { background: var(--gradient-cool); }
.stat-card[data-page='habits']::before { background: var(--gradient-sky); }
.stat-card[data-page='health']::before { background: var(--gradient-nature); }

.stat-card.clickable {
  cursor: pointer;
}

.stat-card.clickable:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 30px var(--color-shadow);
}

.stat-card.clickable:active {
  transform: translateY(-2px) scale(1.01);
}

.stat-card .stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.stat-card .stat-value {
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1.2;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-card[data-page='diary'] .stat-value {
  background: var(--gradient-warm);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-card[data-page='photos'] .stat-value {
  background: var(--gradient-cool);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-card[data-page='habits'] .stat-value {
  background: var(--gradient-sky);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-card[data-page='health'] .stat-value {
  background: var(--gradient-nature);
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-card .stat-label {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  margin-top: 6px;
  font-weight: 500;
}

.stat-card .stat-arrow {
  position: absolute;
  top: 16px;
  right: 14px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.stat-card.clickable:hover .stat-arrow {
  opacity: 1;
  transform: translateX(2px);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--color-shadow);
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.stat-card .stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.2;
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* --- 通用卡片 --- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 2px 12px var(--color-shadow);
  margin-bottom: 20px;
  transition: box-shadow var(--transition-fast);
}

.card:hover {
  box-shadow: 0 4px 20px var(--color-shadow);
}

.card.clickable {
  cursor: pointer;
  position: relative;
}

.card.clickable::after {
  content: '→';
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition-fast);
}

.card.clickable:hover::after {
  opacity: 1;
  transform: translateX(0);
}

.card.clickable:hover {
  box-shadow: 0 6px 24px var(--color-shadow);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
}

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.btn-primary {
  color: white;
  background: var(--gradient-primary);
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 4px 16px rgba(102, 126, 234, 0.5);
  transform: translateY(-1px);
}

.btn-danger {
  color: white;
  background: linear-gradient(135deg, #FF6B6B, #EE5A24);
}

.btn-danger:hover {
  box-shadow: 0 4px 16px rgba(255, 107, 107, 0.4);
}

.btn-outline {
  border: 2px solid var(--color-border);
  color: var(--color-text-secondary);
}

.btn-outline:hover {
  border-color: var(--color-primary, #667eea);
  color: var(--color-primary, #667eea);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

/* --- 表单 --- */
.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}

/* --- 模态框 --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 560px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* --- 空状态 --- */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-secondary);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state .empty-text {
  font-size: 1rem;
  margin-bottom: 16px;
}

/* --- 标签 --- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag-diary { background: var(--color-diary-light); color: var(--color-diary); }
.tag-photos { background: var(--color-photos-light); color: var(--color-photos); }
.tag-habits { background: var(--color-habits-light); color: var(--color-habits); }
.tag-health { background: var(--color-health-light); color: #5a9e7e; }
.tag-finance { background: var(--color-finance-light); color: #c49a0a; }

/* --- 搜索框 --- */
.search-box {
  position: relative;
  margin-bottom: 20px;
}

.search-box input {
  padding-left: 40px;
}

.search-box .search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* --- 响应式 --- */
@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .page-header {
    padding: 0 16px;
  }

  .page-body {
    padding: 16px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .stat-card {
    padding: 14px;
  }

  .stat-card .stat-value {
    font-size: 1.3rem;
  }

  .modal {
    width: 95%;
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}