/* 响应式设计样式表 */

/* 断点定义 */
:root {
  --mobile-breakpoint: 767px;
  --tablet-breakpoint: 768px;
  --desktop-breakpoint: 1200px;
  
  /* 颜色变量 - 符合设计文档规范 */
  --primary-color: #FF7D00; /* 主色：爱马仕橙 */
  --light-orange: #FFB74D; /* 浅橙色 */
  --dark-orange: #E65100; /* 深橙色 */
  --orange-yellow: #FFCC80; /* 橙黄色 */
  --success-color: #FFB74D; /* 成功色：浅橙色 */
  --warning-color: #FFCC80; /* 警告色：橙黄色 */
  --danger-color: #E65100; /* 错误色：深橙色 */
  --info-color: #FF7D00; /* 信息色：爱马仕橙 */
  --text-primary: #333333; /* 主文本色 */
  --text-secondary: #666666; /* 次要文本色 */
  --text-tertiary: #999999; /* 辅助文本色 */
  --bg-light: #f5f5f5; /* 背景色 */
  --card-bg: #ffffff; /* 卡片背景色 */
  --border-light: #eeeeee; /* 边框色 */
  
  /* 字体变量 - 符合设计文档规范 */
  --font-family-primary: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  --font-family-title: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  
  /* 字体大小变量 */
  --font-size-h1: clamp(1.5rem, 4vw, 1.75rem); /* 移动端24px，桌面端28px */
  --font-size-h2: clamp(1.25rem, 3vw, 1.5rem); /* 移动端20px，桌面端24px */
  --font-size-h3: clamp(1.125rem, 2.5vw, 1.25rem); /* 移动端18px，桌面端20px */
  --font-size-h4: clamp(1rem, 2vw, 1.125rem); /* 移动端16px，桌面端18px */
  --font-size-body: clamp(0.875rem, 1.5vw, 1rem); /* 移动端14px，桌面端16px */
  --font-size-small: clamp(0.75rem, 1.25vw, 0.875rem); /* 移动端12px，桌面端14px */
  
  /* 字重变量 */
  --font-weight-title: 600;
  --font-weight-body: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  
  /* 动效变量 */
  --transition-fast: 0.1s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
  --easing-standard: cubic-bezier(0.4, 0, 0.2, 1);
}

/* 全局样式重置和基础设置 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* 基础字体样式 - 符合设计文档规范 */
body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-body);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-light);
}

/* 标题样式 - 符合设计文档规范 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-title);
  font-weight: var(--font-weight-title);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

/* 段落样式 */
p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* 链接样式 */
a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

/* 基础响应式工具类 */
.container {
  width: 100%;
  padding-right: 1rem;
  padding-left: 1rem;
  margin-right: auto;
  margin-left: auto;
}

/* 移动端优先设计 */
@media (min-width: var(--tablet-breakpoint)) {
  .container {
    max-width: 720px;
  }
}

@media (min-width: 992px) {
  .container {
    max-width: 960px;
  }
}

@media (min-width: var(--desktop-breakpoint)) {
  .container {
    max-width: 1140px;
  }
}

/* 响应式网格系统 */
.row {
  display: flex;
  flex-wrap: wrap;
  margin-right: -1rem;
  margin-left: -1rem;
}

.col {
  flex: 0 0 100%;
  padding-right: 1rem;
  padding-left: 1rem;
}

/* 平板端网格 */
@media (min-width: var(--tablet-breakpoint)) {
  .col-sm-1 { flex: 0 0 8.333333%; }
  .col-sm-2 { flex: 0 0 16.666667%; }
  .col-sm-3 { flex: 0 0 25%; }
  .col-sm-4 { flex: 0 0 33.333333%; }
  .col-sm-5 { flex: 0 0 41.666667%; }
  .col-sm-6 { flex: 0 0 50%; }
  .col-sm-7 { flex: 0 0 58.333333%; }
  .col-sm-8 { flex: 0 0 66.666667%; }
  .col-sm-9 { flex: 0 0 75%; }
  .col-sm-10 { flex: 0 0 83.333333%; }
  .col-sm-11 { flex: 0 0 91.666667%; }
  .col-sm-12 { flex: 0 0 100%; }
}

/* 桌面端网格 */
@media (min-width: var(--desktop-breakpoint)) {
  .col-lg-1 { flex: 0 0 8.333333%; }
  .col-lg-2 { flex: 0 0 16.666667%; }
  .col-lg-3 { flex: 0 0 25%; }
  .col-lg-4 { flex: 0 0 33.333333%; }
  .col-lg-5 { flex: 0 0 41.666667%; }
  .col-lg-6 { flex: 0 0 50%; }
  .col-lg-7 { flex: 0 0 58.333333%; }
  .col-lg-8 { flex: 0 0 66.666667%; }
  .col-lg-9 { flex: 0 0 75%; }
  .col-lg-10 { flex: 0 0 83.333333%; }
  .col-lg-11 { flex: 0 0 91.666667%; }
  .col-lg-12 { flex: 0 0 100%; }
}

/* 响应式导航栏样式 */
@media (max-width: var(--mobile-breakpoint)) {
  #header-actions {
    gap: 0.5rem;
  }
  
  #search-section {
    display: none !important;
  }
  
  .mobile-only {
    display: block !important;
  }
  
  .desktop-only {
    display: none !important;
  }
}

@media (min-width: var(--tablet-breakpoint)) {
  #mobile-menu-btn,
  #mobile-search-btn,
  #mobile-search-container {
    display: none !important;
  }
  
  #search-section {
    display: flex !important;
  }
}

/* 响应式卡片布局 */
@media (max-width: var(--mobile-breakpoint)) {
  #activity-grid,
  #route-grid,
  #updates-grid {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
  }
  
  #quick-entries-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem !important;
  }
}

@media (min-width: var(--tablet-breakpoint)) and (max-width: 1199px) {
  #activity-grid,
  #route-grid,
  #updates-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  #quick-entries-grid {
    grid-template-columns: repeat(4, 1fr) !important;
  }
}

@media (min-width: var(--desktop-breakpoint)) {
  #activity-grid,
  #route-grid,
  #updates-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
  
  #quick-entries-grid {
    grid-template-columns: repeat(6, 1fr) !important;
  }
}

/* 响应式表单样式 - 符合设计文档规范 */
.form-group {
  margin-bottom: 1rem;
}

.form-control {
  width: 100%;
  height: 44px;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  font-size: var(--font-size-body);
  font-family: var(--font-family-primary);
  transition: all var(--transition-normal);
  background-color: white;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 125, 0, 0.1);
}

.form-control::placeholder {
  color: var(--text-tertiary);
  font-size: var(--font-size-body);
}

/* 选择器样式 - 符合设计文档规范 */
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23666' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px 16px;
  padding-right: 2.5rem;
}

/* 移动端表单优化 */
@media (max-width: var(--mobile-breakpoint)) {
  .form-control {
    padding: 0.875rem 1rem;
    font-size: var(--font-size-body);
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: var(--font-size-body);
  }
}

/* 响应式按钮样式 - 符合设计文档规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border: none;
  border-radius: 8px;
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

/* 主要按钮 - 符合设计文档规范 */
.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border-radius: 8px;
}

.btn-primary:hover {
  background-color: #E65100;
  box-shadow: 0 4px 12px rgba(255, 125, 0, 0.3);
  transform: translateY(-2px);
}

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

/* 次要按钮 - 符合设计文档规范 */
.btn-secondary {
  background-color: white;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  border-radius: 8px;
}

.btn-secondary:hover {
  background-color: #fff8f0;
  transform: translateY(-2px);
}

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

/* 禁用按钮 - 符合设计文档规范 */
.btn:disabled {
  background-color: #cccccc;
  color: white;
  cursor: not-allowed;
  opacity: 0.6;
}

.btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* 移动端触控目标优化 */
@media (max-width: var(--mobile-breakpoint)) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  a {
    min-height: 44px;
    min-width: 44px;
  }
  
  input, button, select, textarea {
    min-height: 44px;
  }
}

/* 响应式图片处理 */
.img-fluid {
  max-width: 100%;
  height: auto;
}

.img-responsive {
  display: block;
  max-width: 100%;
  height: auto;
}

/* 响应式文本大小 */
h1 {
  font-size: calc(1.5rem + 1vw);
  line-height: 1.2;
}

h2 {
  font-size: calc(1.25rem + 0.75vw);
  line-height: 1.3;
}

h3 {
  font-size: calc(1.125rem + 0.5vw);
  line-height: 1.4;
}

h4 {
  font-size: calc(1rem + 0.25vw);
  line-height: 1.5;
}

p {
  font-size: 1rem;
  line-height: 1.6;
}

/* 移动端文本优化 */
@media (max-width: var(--mobile-breakpoint)) {
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  h3 {
    font-size: 1.25rem;
  }
  
  h4 {
    font-size: 1.125rem;
  }
  
  p {
    font-size: 1rem;
  }
}

/* 响应式页脚 */
@media (max-width: var(--mobile-breakpoint)) {
  footer .grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
  
  footer .mt-6.sm\:mt-0 {
    margin-top: 0 !important;
  }
}

@media (min-width: var(--tablet-breakpoint)) and (max-width: 1199px) {
  footer .grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

/* 响应式侧边栏 */
@media (max-width: var(--mobile-breakpoint)) {
  #mobile-sidebar {
    width: 280px;
  }
}

/* 响应式间距 */
@media (max-width: var(--mobile-breakpoint)) {
  .section {
    padding: 1rem 0;
  }
  
  .container {
    padding-right: 0.75rem;
    padding-left: 0.75rem;
  }
}

@media (min-width: var(--tablet-breakpoint)) {
  .section {
    padding: 1.5rem 0;
  }
}

@media (min-width: var(--desktop-breakpoint)) {
  .section {
    padding: 2rem 0;
  }
}

/* 隐藏/显示工具类 */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

@media (max-width: var(--mobile-breakpoint)) {
  .d-sm-none { display: none !important; }
  .d-sm-block { display: block !important; }
  .d-sm-inline { display: inline !important; }
  .d-sm-inline-block { display: inline-block !important; }
  .d-sm-flex { display: flex !important; }
  .d-sm-inline-flex { display: inline-flex !important; }
  .d-sm-grid { display: grid !important; }
}

@media (min-width: var(--tablet-breakpoint)) and (max-width: 1199px) {
  .d-md-none { display: none !important; }
  .d-md-block { display: block !important; }
  .d-md-inline { display: inline !important; }
  .d-md-inline-block { display: inline-block !important; }
  .d-md-flex { display: flex !important; }
  .d-md-inline-flex { display: inline-flex !important; }
  .d-md-grid { display: grid !important; }
}

@media (min-width: var(--desktop-breakpoint)) {
  .d-lg-none { display: none !important; }
  .d-lg-block { display: block !important; }
  .d-lg-inline { display: inline !important; }
  .d-lg-inline-block { display: inline-block !important; }
  .d-lg-flex { display: flex !important; }
  .d-lg-inline-flex { display: inline-flex !important; }
  .d-lg-grid { display: grid !important; }
}

/* 响应式弹性布局 */
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }
.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }

@media (max-width: var(--mobile-breakpoint)) {
  .flex-sm-wrap { flex-wrap: wrap !important; }
  .flex-sm-nowrap { flex-wrap: nowrap !important; }
  .flex-sm-column { flex-direction: column !important; }
  .flex-sm-row { flex-direction: row !important; }
}

@media (min-width: var(--tablet-breakpoint)) and (max-width: 1199px) {
  .flex-md-wrap { flex-wrap: wrap !important; }
  .flex-md-nowrap { flex-wrap: nowrap !important; }
  .flex-md-column { flex-direction: column !important; }
  .flex-md-row { flex-direction: row !important; }
}

@media (min-width: var(--desktop-breakpoint)) {
  .flex-lg-wrap { flex-wrap: wrap !important; }
  .flex-lg-nowrap { flex-wrap: nowrap !important; }
  .flex-lg-column { flex-direction: column !important; }
  .flex-lg-row { flex-direction: row !important; }
}

/* 响应式对齐方式 */
.justify-start { justify-content: flex-start !important; }
.justify-end { justify-content: flex-end !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-around { justify-content: space-around !important; }
.justify-evenly { justify-content: space-evenly !important; }

.items-start { align-items: flex-start !important; }
.items-end { align-items: flex-end !important; }
.items-center { align-items: center !important; }
.items-baseline { align-items: baseline !important; }
.items-stretch { align-items: stretch !important; }

@media (max-width: var(--mobile-breakpoint)) {
  .justify-sm-start { justify-content: flex-start !important; }
  .justify-sm-end { justify-content: flex-end !important; }
  .justify-sm-center { justify-content: center !important; }
  .justify-sm-between { justify-content: space-between !important; }
  .justify-sm-around { justify-content: space-around !important; }
  .justify-sm-evenly { justify-content: space-evenly !important; }
  
  .items-sm-start { align-items: flex-start !important; }
  .items-sm-end { align-items: flex-end !important; }
  .items-sm-center { align-items: center !important; }
  .items-sm-baseline { align-items: baseline !important; }
  .items-sm-stretch { align-items: stretch !important; }
}

@media (min-width: var(--tablet-breakpoint)) and (max-width: 1199px) {
  .justify-md-start { justify-content: flex-start !important; }
  .justify-md-end { justify-content: flex-end !important; }
  .justify-md-center { justify-content: center !important; }
  .justify-md-between { justify-content: space-between !important; }
  .justify-md-around { justify-content: space-around !important; }
  .justify-md-evenly { justify-content: space-evenly !important; }
  
  .items-md-start { align-items: flex-start !important; }
  .items-md-end { align-items: flex-end !important; }
  .items-md-center { align-items: center !important; }
  .items-md-baseline { align-items: baseline !important; }
  .items-md-stretch { align-items: stretch !important; }
}

@media (min-width: var(--desktop-breakpoint)) {
  .justify-lg-start { justify-content: flex-start !important; }
  .justify-lg-end { justify-content: flex-end !important; }
  .justify-lg-center { justify-content: center !important; }
  .justify-lg-between { justify-content: space-between !important; }
  .justify-lg-around { justify-content: space-around !important; }
  .justify-lg-evenly { justify-content: space-evenly !important; }
  
  .items-lg-start { align-items: flex-start !important; }
  .items-lg-end { align-items: flex-end !important; }
  .items-lg-center { align-items: center !important; }
  .items-lg-baseline { align-items: baseline !important; }
  .items-lg-stretch { align-items: stretch !important; }
}

/* 响应式边距和内边距 */
.m-0 { margin: 0 !important; }
.m-1 { margin: 0.25rem !important; }
.m-2 { margin: 0.5rem !important; }
.m-3 { margin: 0.75rem !important; }
.m-4 { margin: 1rem !important; }
.m-5 { margin: 1.25rem !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: 0.25rem !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 0.75rem !important; }
.p-4 { padding: 1rem !important; }
.p-5 { padding: 1.25rem !important; }

/* 移动端边距和内边距优化 */
@media (max-width: var(--mobile-breakpoint)) {
  .m-sm-0 { margin: 0 !important; }
  .m-sm-1 { margin: 0.25rem !important; }
  .m-sm-2 { margin: 0.5rem !important; }
  .m-sm-3 { margin: 0.75rem !important; }
  .m-sm-4 { margin: 1rem !important; }
  .m-sm-5 { margin: 1.25rem !important; }
  
  .p-sm-0 { padding: 0 !important; }
  .p-sm-1 { padding: 0.25rem !important; }
  .p-sm-2 { padding: 0.5rem !important; }
  .p-sm-3 { padding: 0.75rem !important; }
  .p-sm-4 { padding: 1rem !important; }
  .p-sm-5 { padding: 1.25rem !important; }
}

/* 统一卡片组件规范 */
.card {
  background-color: var(--card-bg);
  border-radius: 1rem;
  box-shadow: var(--card-shadow, 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06));
  transition: all 0.3s ease-in-out;
  overflow: hidden;
  border: 1px solid var(--border-light, #E5E7EB);
  min-height: 200px;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-shadow, 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05));
}

.card-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border-light, #E5E7EB);
}

.card-body {
  padding: 1.25rem;
}

.card-footer {
  padding: 1.25rem;
  border-top: 1px solid var(--border-light, #E5E7EB);
  background-color: rgba(0, 0, 0, 0.02);
}

/* 卡片图片容器 */
.card-img-container {
  position: relative;
  overflow: hidden;
  width: 100%;
  padding-bottom: 33.33%; /* 调整为更小的高度，宽高比 3:1 */
}

.card-img-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-img-container img {
  transform: scale(1.05);
}

/* 卡片尺寸规范 */
.card-sm {
  max-width: 300px;
}

.card-md {
  max-width: 400px;
}

.card-lg {
  max-width: 600px;
}

.card-xl {
  max-width: 800px;
}

.card-full {
  max-width: 100%;
}

/* 卡片间距规范 */
.card-grid {
  display: grid;
  gap: 1.5rem;
}

/* 响应式卡片网格布局 */
@media (max-width: var(--mobile-breakpoint)) {
  .card-grid {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }
  
  .card {
    margin-bottom: 0;
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .card-header,
  .card-footer {
    padding: 1rem;
  }
  
  .card-img-container {
    padding-bottom: 100%; /* 1:1 宽高比 */
  }
}

@media (min-width: var(--tablet-breakpoint)) and (max-width: 1199px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1.5rem !important;
  }
}

@media (min-width: var(--desktop-breakpoint)) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 1.75rem !important;
  }
}

/* 卡片变体 */
.card-primary {
  border-left: 4px solid var(--primary-color);
}

.card-success {
  border-left: 4px solid var(--success-color);
}

.card-warning {
  border-left: 4px solid var(--warning-color);
}

.card-danger {
  border-left: 4px solid var(--danger-color);
}

/* 卡片文本样式 */
.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.card-text {
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

/* 卡片按钮组 */
.card-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* 卡片标签 */
.card-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background-color: var(--bg-light);
  color: var(--text-secondary);
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

/* 卡片统计信息 */
.card-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.card-stat {
  flex: 1;
  text-align: center;
}

.card-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.card-stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* 卡片骨架屏 */
.card-skeleton {
  background: linear-gradient(90deg, var(--bg-light) 25%, var(--border-light) 50%, var(--bg-light) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* 响应式表格 */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

/* 移动端表格优化 */
@media (max-width: var(--mobile-breakpoint)) {
  .table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
  
  .table th,
  .table td {
    padding: 0.5rem;
    font-size: 0.875rem;
  }
}

/* 响应式图片处理 */
.img-container {
  position: relative;
  overflow: hidden;
  padding-bottom: 66.67%; /* 3:2 比例 */
  height: 0;
}

.img-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.img-container:hover img {
  transform: scale(1.05);
}

/* 移动端图片比例优化 */
@media (max-width: var(--mobile-breakpoint)) {
  .img-container {
    padding-bottom: 100%; /* 1:1 比例 */
  }
}

/* 响应式加载状态 */
.loading-spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 移动端加载状态优化 */
@media (max-width: var(--mobile-breakpoint)) {
  .loading-spinner {
    width: 1.25rem;
    height: 1.25rem;
  }
}

/* 动画效果定义 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* 动画工具类 */
.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide-up {
  animation: slideUp 0.6s ease-out forwards;
}

.animate-slide-right {
  animation: slideRight 0.6s ease-out forwards;
}

.animate-scale-in {
  animation: scaleIn 0.5s ease-out forwards;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* 卡片悬停效果 */
.card-hover-effect {
  transition: all 0.3s ease-in-out;
}

.card-hover-effect:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12), 0 6px 12px rgba(0, 0, 0, 0.08);
}

.card-hover-effect img {
  transition: transform 0.5s ease;
}

.card-hover-effect:hover img {
  transform: scale(1.1);
}

/* 卡片渐变背景 */
.card-gradient {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

/* 隐藏模式样式 */
.hidden-mode {
  background-color: #1a1a1a;
  color: #ffffff;
}

.hidden-mode #product-filters,
.hidden-mode #product-grid .card-hover-effect {
  background-color: #2d2d2d;
  color: #ffffff;
  border: 1px solid #404040;
}

.hidden-mode .text-text-primary {
  color: #ffffff;
}

.hidden-mode .text-text-secondary {
  color: #a0a0a0;
}

.hidden-mode .bg-primary {
  background-color: #ff9500;
}

.hidden-mode .bg-gray-100 {
  background-color: #3d3d3d;
}

.hidden-mode .border-border-light {
  border-color: #404040;
}

/* 响应式动画 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 打印样式 */
@media print {
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
  
  #mobile-menu-btn,
  #mobile-search-btn,
  #mobile-sidebar,
  #search-section,
  #header-actions,
  footer {
    display: none !important;
  }
  
  main {
    margin-top: 0;
    padding: 0;
  }
}