/**
 * 智慧社区O2O系统样式文件
 * Smart Community O2O System Styles
 * 作者: 系统重构
 * 创建时间: 2025
 */

/* ===== CSS变量定义 ===== */
:root {
  /* 主色调 */
  --primary-color: #4A90E2;
  --primary-light: #6BA3E8;
  --primary-dark: #357ABD;
  
  /* 渐变色 */
  --gradient-blue: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-purple: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-green: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-orange: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-pink: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  
  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  /* 圆角 */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  
  /* 阴影 */
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.15);
  --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.2);
  
  /* 过渡动画 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* 字体 */
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-xxl: 32px;
}

/* ===== 智慧社区网格布局 ===== */
.smart-community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  padding: 0 var(--spacing-md);
}

/* 智慧社区卡片 */
.smart-card {
  background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-medium);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.smart-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-blue);
  transition: height var(--transition-normal);
}

.smart-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
}

.smart-card:hover::before {
  height: 8px;
}

/* 卡片头部 */
.card-header {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.card-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-sm);
  background: var(--gradient-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: transform var(--transition-normal);
}

.smart-card:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
}

.card-header h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: var(--spacing-sm);
}

.card-header p {
  color: #7f8c8d;
  font-size: var(--font-size-md);
  line-height: 1.6;
}

/* 功能标签 */
.card-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
}

.feature-tag {
  background: linear-gradient(45deg, #f8f9fa, #e9ecef);
  color: #495057;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  transition: all var(--transition-fast);
  border: 1px solid #dee2e6;
}

.feature-tag:hover {
  background: var(--gradient-blue);
  color: white;
  transform: translateY(-2px);
}

/* ===== 智能物联系统主容器 ===== */
.smart-iot-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}

/* 背景网格图案 */
.smart-iot-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

.smart-iot-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 2;
}

/* ===== 标题区域样式 ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* 智能关键词容器 */
.smart-keywords-container {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

/* 智能关键词样式 */
.smart-keyword {
  padding: 12px 24px;
  border-radius: 25px;
  color: white;
  font-weight: 600;
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

/* 关键词渐变背景 */
.smart-keyword.keyword-1 { background: var(--gradient-blue); }
.smart-keyword.keyword-2 { background: var(--gradient-purple); }
.smart-keyword.keyword-3 { background: var(--gradient-green); }
.smart-keyword.keyword-4 { background: var(--gradient-orange); }

/* 关键词悬停效果 */
.smart-keyword:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: var(--shadow-heavy);
}

/* 关键词动画类 */
.smart-keyword.animate {
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 副标题样式 */
.section-subtitle {
  color: white;
  font-size: var(--font-size-xl);
  font-weight: 300;
  text-align: center;
  opacity: 0.9;
  line-height: 1.6;
}

/* ===== 智能设备展示区域 ===== */
.smart-devices-showcase {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-heavy);
  margin-top: var(--spacing-xl);
  position: relative;
  z-index: 3;
}

/* ===== 设备导航样式 ===== */
.device-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.device-nav-item {
  background: linear-gradient(145deg, #f8f9fa, #e9ecef);
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 500;
  color: #495057;
  min-width: 140px;
  justify-content: center;
}

.device-nav-item:hover {
  background: linear-gradient(145deg, #e9ecef, #dee2e6);
  transform: translateY(-2px);
  box-shadow: var(--shadow-light);
}

.device-nav-item.active {
  background: var(--gradient-blue);
  color: white;
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-medium);
}

.nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ===== 设备详情展示样式 ===== */
.device-content {
  position: relative;
  min-height: 500px;
}

.device-detail {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(30px);
  transition: all var(--transition-normal);
}

.device-detail.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  animation: slideInUp 0.6s ease;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.detail-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

/* ===== 设备信息文本样式 ===== */
.detail-text h3 {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.detail-text h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--gradient-blue);
  border-radius: 2px;
}

/* 功能列表样式 */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: linear-gradient(145deg, #f8f9fa, #ffffff);
  border-radius: var(--border-radius-sm);
  border-left: 4px solid transparent;
  transition: all var(--transition-normal);
}

.feature-item:hover {
  border-left-color: var(--primary-color);
  transform: translateX(8px);
  box-shadow: var(--shadow-light);
}

.feature-icon {
  font-size: var(--font-size-xl);
  min-width: 40px;
  text-align: center;
  background: linear-gradient(145deg, #fff, #f8f9fa);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-light);
}

.feature-item p {
  color: #495057;
  line-height: 1.6;
  margin: 0;
  font-size: var(--font-size-md);
}

/* ===== 设备视觉效果样式 ===== */
.detail-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-container {
  position: relative;
  max-width: 400px;
  width: 100%;
}

.visual-container img {
  width: 80%;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-medium);
}

/* ===== 动画效果样式 ===== */

/* 脉冲点动画 */
.pulse-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #ff6b6b;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.pulse-dot::before {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  background: rgba(255, 107, 107, 0.3);
  border-radius: 50%;
  animation: pulseRing 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}

@keyframes pulseRing {
  0% { transform: scale(0.8); opacity: 1; }
  100% { transform: scale(2); opacity: 0; }
}

/* 脉冲点位置 */
.dot-1 { top: 20%; left: 30%; animation-delay: 0s; }
.dot-2 { top: 60%; right: 25%; animation-delay: 0.5s; }
.dot-3 { bottom: 30%; left: 20%; animation-delay: 1s; }
.dot-4 { top: 40%; right: 40%; animation-delay: 1.5s; }

/* 扫描圆圈动画 */
.scan-circle {
  position: absolute;
  border: 2px solid #4A90E2;
  border-radius: 50%;
  animation: scanPulse 3s infinite;
}

.circle-1 {
  width: 100px;
  height: 100px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 0s;
}

.circle-2 {
  width: 150px;
  height: 150px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 1s;
}

@keyframes scanPulse {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(0.8); }
  50% { opacity: 0.5; transform: translate(-50%, -50%) scale(1.2); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(1.5); }
}

/* 浮动元素动画 */
.floating-element {
  position: absolute;
  top: 20%;
  right: 10%;
  animation: float 4s ease-in-out infinite;
}

.floating-icon {
  width: 60px;
  height: 60px;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* 零售机动画效果 */
.retail-animation {
  position: absolute;
  top: 10%;
  left: 10%;
  width: 20px;
  height: 20px;
  background: #28a745;
  border-radius: 50%;
  animation: retailBlink 2s infinite;
}

@keyframes retailBlink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.3; }
}

/* 停车场动画效果 */
.parking-animation {
  position: absolute;
  bottom: 15%;
  right: 15%;
  width: 30px;
  height: 30px;
  border: 3px solid #ffc107;
  border-top: 3px solid transparent;
  border-radius: 50%;
  animation: parkingSpin 2s linear infinite;
}

@keyframes parkingSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 车辆移动动画 */

.floating-icon {
  width: 60px;
  height: 60px;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* 零售机动画效果 */
.retail-animation {
  position: absolute;
  top: 10%;
  left: 10%;
  width: 20px;
  height: 20px;
  background: #28a745;
  border-radius: 50%;
  animation: retailBlink 2s infinite;
}

@keyframes retailBlink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0.3; }
}

/* 车辆元素动画 */
.car-element {
  position: absolute;
  width: 40px;
  height: auto;
  opacity: 0;
  animation: carMove 4s ease-in-out infinite;
}

.car-1 { animation-delay: 0s; top: 20%; }
.car-2 { animation-delay: 0.8s; top: 20%; }
.car-3 { animation-delay: 1.6s; top: 50%; }
.car-4 { animation-delay: 2.4s; top: 50%; }
.car-5 { animation-delay: 3.2s; top: 80%; }

@keyframes carMove {
  0% {
    opacity: 0;
    transform: translateX(-100px);
  }
  20% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(100px);
  }
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
  .smart-iot-container {
    padding: 0 var(--spacing-sm);
  }
  
  .detail-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .smart-keywords-container {
    gap: var(--spacing-sm);
  }
  
  .device-nav {
    gap: var(--spacing-xs);
  }
  
  .device-nav-item {
    min-width: 120px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

@media (max-width: 768px) {
  .smart-iot-section {
    padding: 60px 0;
  }
  
  .smart-community-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
  }
  
  .smart-keywords-container {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .smart-keyword {
    font-size: var(--font-size-md);
    padding: 10px 20px;
  }
  
  .device-nav {
    flex-direction: column;
    align-items: center;
  }
  
  .device-nav-item {
    width: 100%;
    max-width: 200px;
  }
  
  .detail-text h3 {
    font-size: var(--font-size-xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .smart-devices-showcase {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .smart-iot-section {
    padding: 40px 0;
  }
  
  .smart-card {
    padding: var(--spacing-md);
  }
  
  .card-icon {
    width: 50px;
    height: 50px;
  }
  
  .feature-item {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xs);
  }
  
  .feature-icon {
    align-self: center;
  }
}

/* ===== 无障碍访问支持 ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
  .smart-keyword {
    border: 2px solid currentColor;
  }
  
  .device-nav-item {
    border: 2px solid currentColor;
  }
  
  .feature-item {
    border: 1px solid currentColor;
  }
}

/* 焦点样式 */
.device-nav-item:focus,
.smart-keyword:focus {
  outline: 3px solid #4A90E2;
  outline-offset: 2px;
}

/* 打印样式 */
@media print {
  .smart-iot-section {
    background: white !important;
    color: black !important;
  }
  
  .smart-keyword,
  .device-nav-item {
    background: white !important;
    color: black !important;
    border: 1px solid black !important;
  }
  
  .pulse-dot,
  .scan-circle,
  .floating-element,
  .retail-animation,
  .parking-animation {
    display: none !important;
  }
}