/* ============================================
   儒达伟业科技 - 公共样式
   ============================================ */

/* 基础配置 */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Public Sans", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 主题色变量 */
:root {
    --primary: #0f4c81;
    --primary-light: #1a5a94;
    --secondary: #f59e0b;
    --accent: #475569;
    --background-light: #f8fafc;
    --background-dark: #0f172a;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* 导航栏样式 */
.nav-link {
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--primary);
    color: white;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(15, 76, 129, 0.3);
}

.btn-secondary {
    background-color: var(--secondary);
    color: white;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: #d97706;
    transform: translateY(-1px);
}

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

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

/* 图片遮罩 */
.img-overlay {
    position: relative;
}

.img-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
}

/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid #e2e8f0;
    padding: 1rem;
    z-index: 40;
}

.mobile-menu.active {
    display: block;
}

/* 页面内容区 */
.page-content {
    min-height: calc(100vh - 320px);
}

/* 表单样式 */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
}

/* 响应式工具 */
@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .show-mobile {
        display: none !important;
    }
}

/* 打印样式 */
@media print {
    .no-print {
        display: none !important;
    }
}