/* ============================================================================
   公司页面系列移动端专项优化
   适用于：AboutUs, Contact, JoinUs, WhyUs, Honor, BecomePartner
   ============================================================================ */

/* 超小屏优化（< 640px）*/
@media (max-width: 639px) {
    /* AboutUs页面 - Hero区域 */
    .about-hero {
        padding: 70px 0 50px;
    }

    .about-hero h1 {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
        line-height: 1.2;
    }

    .about-hero p {
        font-size: 0.95rem;
        line-height: 1.5;
        margin: 0 auto 1.5rem;
    }

    /* 粒子动画 */
    .particles-bg {
        display: none; /* 移动端禁用粒子动画以提升性能 */
    }

    /* Contact页面 - 头部 */
    .contact-header {
        padding: 70px 0 50px;
    }

    .contact-header h1 {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
    }

    .contact-header p {
        font-size: 1rem;
        padding: 0 1rem;
    }

    /* 联系信息卡片 */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
        padding: 0 1rem;
    }

    .contact-card {
        padding: 1.5rem 1.25rem;
    }

    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }

    .contact-card h3 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }

    .contact-card .info {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .contact-card .desc {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* 咨询表单 */
    .consultation-section,
    .consultation-section {
        padding: 40px 0;
    }

    .consultation-form {
        padding: 1.5rem 1.25rem;
        margin: 0 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    .form-group label {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .form-control {
        padding: 10px 12px;
        font-size: 0.95rem;
    }

    .form-control.textarea {
        min-height: 100px;
    }

    /* About页面 - Section标题 */
    .section-title h2 {
        font-size: 1.75rem;
        margin-bottom: 0.75rem;
    }

    .section-title p {
        font-size: 0.95rem;
        line-height: 1.5;
    }

    /* About页面 - 内容网格 */
    .content-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .content-section {
        padding: 1.5rem;
    }

    .content-section h3 {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }

    /* 面包屑 */
    .breadcrumb-section {
        padding: 0.75rem 0;
    }

    .breadcrumb {
        font-size: 0.85rem;
        padding: 0 1rem;
    }

    .breadcrumb-item {
        padding: 0.15rem 0.3rem;
    }

    /* 按钮优化 */
    .btn-primary-lg,
    .btn-secondary-lg {
        width: 100%;
        padding: 12px 24px;
        font-size: 0.95rem;
        margin: 0.5rem 0;
    }

    /* JoinUs页面 - 表格 */
    .about-join-job table {
        font-size: 0.85rem;
    }

    .about-join-job td {
        padding: 0.75rem 0.5rem;
    }

    /* About页面 - Tab导航 */
    .switch-tab-content {
        width: 100%;
        margin: 0;
    }

    .about-tab {
        display: none; /* 移动端隐藏侧边tab */
    }

    .about-tab-mobile {
        display: block; /* 显示移动端tab */
    }

    .about-tab-mobile ul {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 0.5rem 1rem;
        overflow-x: auto;
    }

    .about-tab-mobile ul li {
        flex-shrink: 0;
        display: block;
    }

    .about-tab-mobile a {
        padding: 0.5rem 1rem;
        border: 1px solid #e9ecef;
        border-radius: 20px;
        font-size: 0.9rem;
    }

    .about-tab-mobile a.active {
        background: var(--primary-color, #5751D5);
        color: white;
        border-color: var(--primary-color, #5751D5);
    }

    /* Tab内容区域 */
    .tab-content {
        width: 100%;
        float: none;
        padding: 1rem;
    }

    /* 荣誉页面 - 网格 */
    .honor-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .honor-card {
        margin-bottom: 0.75rem;
    }

    .honor-card img {
        height: 150px;
    }

    /* 时间轴优化 */
    .timeline-item {
        padding-left: 1rem;
        margin-bottom: 1.5rem;
    }

    .timeline-year {
        font-size: 1.5rem;
        margin-bottom: 0.5rem;
    }

    /* 团队成员卡片 */
    .team-card {
        margin-bottom: 1.5rem;
        padding: 1.25rem;
    }

    .team-card img {
        height: 200px;
    }
}

/* 小屏优化（640px - 767px）*/
@media (min-width: 640px) and (max-width: 767px) {
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .honor-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .content-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }
}

/* 平板优化（768px - 1023px）*/
@media (min-width: 768px) and (max-width: 1023px) {
    .about-hero {
        padding: 100px 0 80px;
    }

    .contact-header {
        padding: 100px 0 70px;
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .about-tab {
        display: block; /* 平板显示侧边tab */
    }

    .about-tab-mobile {
        display: none; /* 隐藏移动端tab */
    }

    .switch-tab-content {
        width: 100%;
        margin: 0 auto;
    }

    .tab-content {
        width: calc(100% - 228px);
    }

    .content-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* 横屏优化 */
@media (max-width: 1024px) and (orientation: landscape) {
    .about-hero,
    .contact-header {
        padding: 50px 0 40px;
    }

    .consultation-section {
        padding: 30px 0;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .contact-card,
    .consultation-form .form-control,
    .btn-primary-lg,
    .btn-secondary-lg,
    .honor-card,
    .team-card {
        min-height: 48px;
        min-width: 48px;
    }

    .contact-card:active,
    .btn-primary-lg:active,
    .btn-secondary-lg:active {
        transform: scale(0.98);
    }

    .contact-card:hover {
        transform: none;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }
}

/* 动画优化（移动端禁用复杂动画）*/
@media (max-width: 767px) {
    .particles-bg {
        display: none;
    }

    .particle {
        display: none;
    }

    .contact-card,
    .honor-card,
    .team-card {
        transition: none;
    }

    /* 简化加载动画 */
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .contact-card,
    .content-section {
        animation: fadeInUp 0.3s ease-out;
    }
}

/* 表单验证错误样式优化 */
@media (max-width: 767px) {
    input.warn,
    .form-control.warn {
        border-color: #dc3545;
        background-color: #fff5f5;
    }

    input.warn:focus,
    .form-control.warn:focus {
        box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
    }
}

/* Hero背景优化 */
@media (max-width: 767px) {
    .about-hero,
    .contact-header {
        background-size: cover;
        background-position: center 70%;
    }

    .about-hero::after,
    .contact-header::after {
        display: none; /* 移动端隐藏装饰背景 */
    }
}

/* 面包屑移动端优化 */
@media (max-width: 480px) {
    .bread-nav {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }

    .bread-nav a {
        padding: 0.1rem 0.25rem;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    .particles-bg,
    .particle {
        display: none;
    }

    .contact-card,
    .honor-card,
    .team-card,
    .btn-primary-lg,
    .btn-secondary-lg {
        transition: none;
        animation: none;
    }

    @keyframes fadeInUp {
        animation-duration: 0.01ms !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .contact-card {
        border: 2px solid #000000;
    }

    .contact-icon {
        border: 2px solid #000000;
    }

    .form-control {
        border-width: 2px;
    }

    .btn-primary-lg,
    .btn-secondary-lg {
        border-width: 2px;
    }
}

/* 打印样式 */
@media print {
    .about-hero,
    .contact-header,
    .breadcrumb-section {
        page-break-after: always;
    }

    .contact-card,
    .content-section,
    .honor-card {
        break-inside: avoid;
    }

    .consultation-form {
        page-break-inside: avoid;
    }

    .about-tab,
    .about-tab-mobile {
        display: none;
    }
}

/* 优化图片加载 */
@media (max-width: 767px) {
    .honor-card img,
    .team-card img {
        background: #f0f0f0;
        min-height: 150px;
    }

    img[loading="lazy"] {
        background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
        background-size: 200% 100%;
        animation: loading 1.5s infinite;
    }

    img[loading="lazy"].loaded {
        background: none;
        animation: none;
    }
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 职位详情卡片 */
@media (max-width: 767px) {
    .job-detail-card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }

    .job-detail-card h3 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }

    .job-detail-card .info {
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }
}

/* 地图优化 */
@media (max-width: 767px) {
    .map-section {
        padding: 40px 0;
    }

    .map-container {
        height: 300px;
        border-radius: 12px;
    }
}

/* 按钮组优化 */
@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .btn-primary-lg,
    .btn-secondary-lg {
        width: 100%;
        margin: 0;
    }
}

/* 合作伙伴页面 - Grid优化 */
@media (max-width: 767px) {
    .partner-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .partner-card {
        padding: 1.25rem;
    }
}

@media (min-width: 640px) and (max-width: 767px) {
    .partner-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 字体加载优化 */
.font-loading .about-hero h1,
.font-loading .contact-header h1,
.font-loading .section-title h2 {
    font-family: system-ui, -apple-system, sans-serif;
}

/* 横向滚动提示 */
@media (max-width: 767px) {
    .about-tab-mobile::after {
        content: '→';
        position: fixed;
        right: 20px;
        bottom: 20px;
        width: 50px;
        height: 50px;
        background: rgba(87, 81, 213, 0.9);
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.2rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        z-index: 100;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .about-tab-mobile.scrolled::after {
        opacity: 1;
    }
}

/* 触摸反馈 */
@media (hover: none) and (pointer: coarse) {
    .contact-card:active::after,
    .honor-card:active::after,
    .team-card:active::after {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(0,123,255,0.1);
        animation: touch-ripple 0.6s ease-out;
    }
}

@keyframes touch-ripple {
    0% {
        opacity: 0.6;
    }
    100% {
        opacity: 0;
    }
}