/* 自定义工具类 - 江西润泰电子官网 */

.font-sans {
  font-family: 'Noto Sans SC', 'Inter', system-ui, -apple-system, sans-serif;
}

/* 渐变背景 */
.gradient-bg {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
}

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 容器 */
.container-custom {
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* 区块间距 */
.section-padding {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

@media (min-width: 768px) {
  .section-padding {
    padding-top: 6rem;
    padding-bottom: 6rem;
  }
}

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

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.1);
}

/* 头部高度 */
.h-18 {
  height: 4.5rem;
}

/* 头部间距补偿 */
.pt-18 {
  padding-top: 4.5rem;
}

.pt-28 {
  padding-top: 7rem;
}

/* Hero 渐变叠加 */
.hero-gradient {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(29, 78, 216, 0.85) 100%);
}

/* 服务卡片图标渐变 */
.icon-gradient-blue {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.icon-gradient-amber {
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
}

.icon-gradient-purple {
  background: linear-gradient(135deg, #8b5cf6 0%, #4f46e5 100%);
}

.icon-gradient-rose {
  background: linear-gradient(135deg, #f43f5e 0%, #ec4899 100%);
}

.icon-gradient-emerald {
  background: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
}

.icon-gradient-cyan {
  background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
}

.icon-gradient-orange {
  background: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
}

.icon-gradient-violet {
  background: linear-gradient(135deg, #8b5cf6 0%, #a855f7 100%);
}

/* 滚动动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* 淡入动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

/* 按钮点击效果 */
button:active,
a:active {
  transform: scale(0.98);
}

/* 表单输入焦点 */
input:focus,
textarea:focus {
  outline: none;
}

/* 移动端菜单动画 */
#mobileMenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

#mobileMenu:not(.hidden) {
  max-height: 400px;
}

/* 返回顶部按钮 */
#backToTop {
  transition: opacity 0.3s ease;
}

/* 数字动画 */
.counter {
  font-variant-numeric: tabular-nums;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a1a1a1;
}

/* ========== 移动端响应式优化 ========== */

/* 图片自适应 */
img {
  max-width: 100%;
  height: auto;
}

/* 移动端字体优化 */
@media (max-width: 640px) {
  html {
    font-size: 14px;
  }
}

/* 触摸设备优化 */
@media (pointer: coarse) {
  button, a {
    min-height: 44px;
    min-width: 44px;
  }
}

/* 移动端间距优化 */
@media (max-width: 768px) {
  .container-custom {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  .section-padding {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
}

/* 移动端网格优化 */
@media (max-width: 640px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .md\:grid-cols-2 {
    grid-template-columns: 1fr;
  }
  
  .lg\:grid-cols-2,
  .lg\:grid-cols-3,
  .lg\:grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* 防止水平滚动 */
body {
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

/* 移动端表单优化 */
@media (max-width: 768px) {
  input, textarea, select {
    font-size: 16px; /* 防止iOS缩放 */
  }
}

/* 移动端Hero文字优化 */
@media (max-width: 640px) {
  .hero-title {
    font-size: 1.75rem;
    line-height: 1.3;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
}

/* 移动端卡片间距 */
@media (max-width: 768px) {
  .card-grid {
    gap: 1rem;
  }
}

/* 安全区域适配（刘海屏） */
@supports (padding-top: env(safe-area-inset-top)) {
  header {
    padding-top: env(safe-area-inset-top);
  }
  
  .safe-area-bottom {
    padding-bottom: env(safe-area-inset-bottom);
  }
}