/* 响应式样式文件 */
/* 文件位置: portfolio/css/responsive.css */
/* 创建时间: 2026-03-31 */

/* 大桌面设备 (1200px以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* 桌面设备 (1024px - 1199px) */
@media (max-width: 1199px) {
    .container {
        max-width: 960px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板设备 (768px - 1023px) */
@media (max-width: 1023px) {
    .container {
        max-width: 720px;
    }
    
    /* 导航栏响应式 */
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: var(--color-primary);
        padding: var(--spacing-lg);
        transition: var(--transition-normal);
        box-shadow: var(--shadow-md);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .menu-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Hero 部分响应式 */
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
        margin-bottom: var(--spacing-lg);
    }
    
    .image-placeholder {
        width: 250px;
        height: 250px;
        font-size: 6rem;
    }
    
    /* 关于部分响应式 */
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .avatar-placeholder {
        width: 200px;
        height: 200px;
        font-size: 5rem;
        margin: 0 auto var(--spacing-lg);
    }
    
    /* 联系部分响应式 */
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    /* 页脚响应式 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* 移动设备 (576px - 767px) */
@media (max-width: 767px) {
    .container {
        max-width: 540px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .experience {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
}

/* 小移动设备 (575px以下) */
@media (max-width: 575px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .image-placeholder {
        width: 200px;
        height: 200px;
        font-size: 5rem;
    }
    
    .avatar-placeholder {
        width: 150px;
        height: 150px;
        font-size: 4rem;
    }
    
    .about-text h3 {
        font-size: 1.5rem;
    }
    
    .skill-category {
        padding: var(--spacing-md);
    }
    
    .project-content {
        padding: var(--spacing-md);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
    
    .contact-item i {
        margin-bottom: var(--spacing-xs);
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .hero-buttons,
    .contact-form,
    .footer,
    .back-to-top {
        display: none;
    }
    
    body {
        color: #000;
        background-color: #fff;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .hero,
    .about,
    .skills,
    .projects,
    .contact {
        padding: 1rem 0;
        page-break-inside: avoid;
    }
    
    a {
        color: #000;
        text-decoration: none;
    }
    
    .section-title::after {
        background-color: #000;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --color-text: #000000;
        --color-text-light: #333333;
        --color-primary: #ffffff;
        --color-secondary: #f0f0f0;
        --color-bg-light: #e0e0e0;
        --color-border: #000000;
    }
    
    .highlight {
        color: #0000ff;
    }
    
    .btn-primary {
        background-color: #0000ff;
        color: #ffffff;
    }
    
    .skill-level {
        background: #0000ff;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .skill-level {
        transition: none;
    }
    
    .project-card:hover {
        transform: none;
    }
}

/* 黑暗模式支持（系统级） */
@media (prefers-color-scheme: dark) {
    /* 我们的主题已经是深色，所以不需要额外调整 */
    /* 这里可以添加针对系统黑暗模式的微调 */
}

/* 横屏模式 */
@media (orientation: landscape) and (max-height: 500px) {
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .hero .container {
        grid-template-columns: 2fr 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .image-placeholder {
        width: 150px;
        height: 150px;
        font-size: 4rem;
    }
}

/* 超大屏幕支持 */
@media (min-width: 1600px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .nav-link:hover::after {
        width: 0;
    }
    
    .nav-link.active::after {
        width: 100%;
    }
    
    .btn:hover,
    .social-link:hover,
    .project-link:hover {
        transform: none;
    }
    
    .project-card:hover {
        transform: none;
    }
    
    /* 增加触摸目标大小 */
    .nav-link {
        padding: 12px 0;
    }
    
    .btn {
        padding: 16px 32px;
    }
    
    .social-link {
        width: 48px;
        height: 48px;
    }
    
    .project-link {
        padding: 8px;
    }
}

/* 性能优化：在低端设备上减少特效 */
@media (max-width: 1024px) and (prefers-reduced-data: reduce) {
    .hero {
        background: var(--color-primary);
    }
    
    .image-placeholder,
    .avatar-placeholder {
        background: var(--color-accent);
    }
    
    .skill-level {
        background: var(--color-accent);
    }
}