/* 通用响应式样式 - 适用于所有页面 */

/* 基础响应式变量 */
:root {
  --mobile-breakpoint: 720px;
  --tablet-breakpoint: 1480px;
  --desktop-breakpoint: 1440px;
  
  /* 字体大小缩放 */
  --font-scale-mobile: 0.8;
  --font-scale-tablet: 0.9;
  --font-scale-desktop: 1;
  
  /* 间距缩放 */
  --spacing-scale-mobile: 0.6;
  --spacing-scale-tablet: 0.8;
  --spacing-scale-desktop: 1;
}

/* 通用响应式容器 */
.responsive-container {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

/* 响应式网格系统 */
.responsive-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.responsive-grid-2 {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.responsive-grid-3 {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.responsive-grid-4 {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

/* 响应式卡片 */
.responsive-card {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.responsive-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

/* 响应式按钮 */
.responsive-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px; /* 移动端最小触摸目标 */
}

.responsive-btn-primary {
  background: #E94917;
  color: #fff;
}

.responsive-btn-primary:hover {
  background: #d43e14;
  transform: translateY(-1px);
}

.responsive-btn-secondary {
  background: transparent;
  color: #E94917;
  border: 2px solid #E94917;
}

.responsive-btn-secondary:hover {
  background: #E94917;
  color: #fff;
}

/* 响应式图片 */
/* .responsive-img {
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
} */

/* 响应式背景图片 */
.responsive-bg {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* 响应式文字 */
.responsive-text {
  font-size: 1rem;
  line-height: 1.6;
}

.responsive-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.responsive-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.responsive-caption {
  font-size: 0.875rem;
  line-height: 1.4;
  opacity: 0.8;
}

/* 响应式表格 */
.responsive-table {
  width: 100%;
  border-collapse: collapse;
  overflow-x: auto;
  display: block;
  white-space: nowrap;
}

.responsive-table thead,
.responsive-table tbody,
.responsive-table tr {
  display: table;
  width: 100%;
  table-layout: fixed;
}

/* 响应式导航 */
.responsive-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.responsive-nav-item {
  padding: 12px 16px;
  border-radius: 8px;
  transition: background-color 0.2s ease;
}

.responsive-nav-item:hover {
  background-color: rgba(233, 73, 23, 0.1);
}

/* 响应式表单 */
.responsive-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.responsive-form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.responsive-form-input {
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

.responsive-form-input:focus {
  outline: none;
  border-color: #E94917;
}

/* 响应式模态框 */
.responsive-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  box-sizing: border-box;
}

.responsive-modal-content {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  max-width: 500px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
}

/* 响应式工具类 */
.hide-mobile {
  display: block;
}

.hide-tablet {
  display: block;
}

.hide-desktop {
  display: none;
}

.show-mobile {
  display: none;
}

.show-tablet {
  display: none;
}

.show-desktop {
  display: block;
}

.text-center-mobile {
  text-align: left;
}

.text-center-tablet {
  text-align: left;
}

.text-center-desktop {
  text-align: left;
}

/* 平板端适配 (720px - 1480px) */
@media (min-width: 720px) and (max-width: 1480px) {
  .responsive-container {
    padding: 0 32px;
  }
  
  .responsive-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .responsive-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .responsive-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .responsive-title {
    font-size: 2.5rem;
  }
  
  .responsive-subtitle {
    font-size: 1.4rem;
  }
  
  .responsive-nav {
    flex-direction: row;
    gap: 16px;
  }
  
  .responsive-form {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .responsive-form-group {
    flex: 1;
    min-width: 200px;
  }
  
  .hide-tablet {
    display: none;
  }
  
  .show-tablet {
    display: block;
  }
  
  .text-center-tablet {
    text-align: center;
  }
}

/* 桌面端适配 (1480px+) */
@media (min-width: 1480px) {
  .responsive-container {
    padding: 0 48px;
    max-width: 1200px;
  }
  
  .responsive-grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .responsive-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .responsive-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .responsive-title {
    font-size: 3rem;
  }
  
  .responsive-subtitle {
    font-size: 1.75rem;
  }
  
  .responsive-nav {
    flex-direction: row;
    gap: 24px;
  }
  
  .responsive-form {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .responsive-form-group {
    flex: 1;
    min-width: 250px;
  }
  
  .hide-desktop {
    display: none;
  }
  
  .show-desktop {
    display: block;
  }
  
  .text-center-desktop {
    text-align: center;
  }
}

/* 移动端适配 (< 720px) */
@media (max-width: 720px) {
  .responsive-container {
    padding: 0 16px;
  }
  
  .responsive-title {
    font-size: 1.75rem;
  }
  
  .responsive-subtitle {
    font-size: 1.125rem;
  }
  
  .responsive-btn {
    width: 100%;
    justify-content: center;
  }
  
  .responsive-nav {
    flex-direction: column;
    gap: 8px;
  }
  
  .responsive-form {
    flex-direction: column;
  }
  
  .responsive-form-group {
    width: 100%;
  }
  
  .responsive-modal-content {
    margin: 20px;
    padding: 20px;
  }
  
  .hide-mobile {
    display: none;
  }
  
  .show-mobile {
    display: block;
  }
  
  .text-center-mobile {
    text-align: center;
  }
  
  /* 移动端特殊样式 */
  .mobile-full-width {
    width: 100%;
    margin-left: -16px;
    margin-right: -16px;
  }
  
  .mobile-stack {
    flex-direction: column;
  }
  
  .mobile-center {
    text-align: center;
  }
}

/* 高分辨率屏幕适配 */
@media (min-width: 1920px) {
  .responsive-container {
    max-width: 1600px;
    padding: 0 80px;
  }
  
  .responsive-title {
    font-size: 3.5rem;
  }
  
  .responsive-subtitle {
    font-size: 2rem;
  }
}

/* 横屏模式适配 */
@media (orientation: landscape) and (max-height: 500px) {
  .responsive-modal-content {
    max-height: 90vh;
  }
  
  .responsive-nav {
    flex-direction: row;
  }
}

/* 打印样式 */
@media print {
  .responsive-container {
    padding: 0;
  }
  
  .responsive-btn {
    display: none;
  }
  
  .responsive-modal {
    display: none;
  }
}