/* ============================================
   布巴斯科技企业网站 - 响应式设计文件
   ============================================ */

/* 平板设备 (768px - 1024px) */
@media screen and (max-width: 1024px) {
    .container {
        padding: 0 16px;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-container {
        gap: 40px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .tech-content {
        gap: 40px;
    }
    
    .capability-item {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .capability-item:hover {
        transform: translateY(-5px);
    }
}

/* 手机设备 (最大768px) */
@media screen and (max-width: 768px) {
    /* 基础设置 */
    .container {
        padding: 0 12px;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* 导航栏移动端适配 */
    .nav-container {
        padding: 0 12px;
        height: 60px;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        gap: 30px;
        transition: left 0.3s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.2rem;
        padding: 15px 0;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .logo-text {
        font-size: 1.3rem;
    }
    
    /* 主页横幅移动端适配 */
    .hero {
        min-height: 100vh;
        padding-top: 60px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.2rem;
        line-height: 1.3;
    }
    
    .hero-description {
        font-size: 1.1rem;
        margin-bottom: 30px;
    }
    
    .hero-buttons {
        justify-content: center;
        gap: 15px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    /* 关于我们移动端适配 */
    .about {
        padding: 60px 0;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .about-item {
        margin-bottom: 30px;
    }
    
    .about-item h3 {
        font-size: 1.3rem;
    }
    
    .about-item p {
        font-size: 1rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .stat-item {
        padding: 20px 15px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* 服务项目移动端适配 */
    .services {
        padding: 60px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 20px;
    }
    
    .service-title {
        font-size: 1.3rem;
    }
    
    .service-description {
        font-size: 0.95rem;
    }
    
    /* 技术实力移动端适配 */
    .technology {
        padding: 60px 0;
    }
    
    .tech-equipment h3,
    .tech-capabilities h3 {
        font-size: 1.6rem;
        margin-bottom: 30px;
    }
    
    .equipment-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .equipment-item {
        padding: 20px 15px;
    }
    
    .equipment-item i {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
    
    .equipment-item h4 {
        font-size: 1.2rem;
    }
    
    .capability-list {
        gap: 20px;
    }
    
    .capability-item {
        flex-direction: column;
        text-align: center;
        padding: 20px;
        gap: 15px;
    }
    
    .capability-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .capability-content h4 {
        font-size: 1.2rem;
    }
    
    /* 成功案例移动端适配 */
    .cases {
        padding: 60px 0;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .case-card {
        margin: 0 auto;
        max-width: 400px;
    }
    
    .case-image {
        height: 180px;
    }
    
    .case-content {
        padding: 20px;
    }
    
    .case-title {
        font-size: 1.2rem;
    }
    
    .case-description {
        font-size: 0.95rem;
    }
    
    .case-tags {
        gap: 8px;
    }
    
    .tag {
        font-size: 0.8rem;
        padding: 3px 10px;
    }
    
    /* 联系我们移动端适配 */
    .contact {
        padding: 60px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        padding: 15px;
        gap: 15px;
    }
    
    .contact-item:hover {
        transform: translateY(-3px);
    }
    
    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .form {
        padding: 25px;
    }
    
    .form-group {
        margin-bottom: 20px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    /* 页脚移动端适配 */
    .footer {
        padding: 40px 0 15px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 30px;
    }
    
    .footer-section {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
        margin-bottom: 15px;
    }
    
    .footer-logo-text {
        font-size: 1.3rem;
    }
    
    .footer-title {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .social-link {
        width: 35px;
        height: 35px;
    }
    
    /* 返回顶部按钮移动端适配 */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

/* 小手机设备 (最大480px) */
@media screen and (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .service-card {
        padding: 25px 15px;
    }
    
    .service-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .service-title {
        font-size: 1.2rem;
    }
    
    .equipment-item {
        padding: 15px 10px;
    }
    
    .capability-item {
        padding: 15px;
    }
    
    .case-content {
        padding: 15px;
    }
    
    .contact-item {
        padding: 12px;
    }
    
    .form {
        padding: 20px;
    }
    
    .footer-content {
        gap: 25px;
    }
}

/* 超小屏幕 (最大360px) */
@media screen and (max-width: 360px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .nav-container {
        padding: 0 10px;
    }
    
    .logo-text {
        font-size: 1.2rem;
    }
    
    .back-to-top {
        bottom: 15px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }
}

/* 横屏模式适配 */
@media screen and (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 80px 0 40px;
    }
    
    .hero-container {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    .scroll-indicator {
        display: none;
    }
}

/* 高分辨率屏幕适配 */
@media screen and (min-width: 1400px) {
    .container {
        max-width: 1400px;
        padding: 0 30px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 2.8rem;
    }
}

/* 打印样式 */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .navbar,
    .scroll-indicator,
    .back-to-top,
    .hero-buttons,
    .contact-form {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 20px 0;
    }
    
    .section-title::after {
        background: black !important;
    }
}

/* 减少动画效果 (用户偏好) */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating {
        animation: none !important;
    }
    
    .scroll-indicator {
        animation: none !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .hero {
        background: white !important;
    }
    
    .btn-primary {
        background: black !important;
        border: 2px solid black !important;
    }
    
    .service-icon,
    .contact-icon,
    .capability-icon {
        background: black !important;
    }
}