/* 
 * 自然舒适配色方案
 * 灵感：自然光线下的纸张质感
 */

:root {
    /* 浅色主题 - 温暖的米白色调 */
    --bg-primary: #fefefe;
    --bg-secondary: #f8f6f3;
    --bg-card: #ffffff;
    --text-primary: #2c2c2c;
    --text-secondary: #5a5a5a;
    --text-muted: #9a9a9a;
    --border-color: #e8e4e1;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    /* 深色主题 - 暖调深棕灰，柔和舒适 */
    --bg-primary: #2a2826;
    --bg-secondary: #353230;
    --bg-card: #3d3a37;
    --text-primary: #e8e4e1;
    --text-secondary: #c4c0bd;
    --text-muted: #8a8582;
    --border-color: #4a4643;
    --accent-color: #7eb8da;
    --accent-hover: #a5cce3;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: -0.01em;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 建设中提示横幅 */
.notice-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    margin-top: 1.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    box-shadow: var(--shadow-sm);
}

.notice-banner svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.8;
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    z-index: 100;
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    opacity: 0;
    transition: opacity 0.3s ease;
    position: absolute;
}

.theme-toggle .sun-icon {
    opacity: 1;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
}

/* 个人信息区域 */
.profile {
    text-align: center;
    padding: 5rem 0 3.5rem;
}

.avatar-container {
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: none;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.avatar:hover {
    transform: scale(1.08) rotate(2deg);
}

.name {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.bio {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 400;
}

/* 社交链接 */
.social-links {
    display: inline-flex;
    gap: 0.5rem;
    padding: 0.375rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    box-shadow: var(--shadow-sm);
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background-color: transparent;
    border: none;
    border-radius: 9999px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.social-link:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

.social-link svg {
    width: 18px;
    height: 18px;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.social-link:hover svg {
    opacity: 1;
}

/* 区块标题 */
.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: left;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

/* 作品展示区域 */
.projects-section {
    margin: 3rem 0;
}

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

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.project-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.project-tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.625rem;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 9999px;
    font-weight: 500;
}

/* 项目操作按钮 */
.project-actions {
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

[data-theme="dark"] .btn-primary {
    color: #1e1e1e;
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-primary);
    border-color: var(--text-muted);
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 错误提示 */
.error-message {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    margin: 1rem 0;
}

/* 页脚和备案号 */
.footer {
    text-align: center;
    padding: 3rem 0 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8125rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--accent-color);
}

.icp-beian {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.icp-beian a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.icp-beian a:hover {
    color: var(--accent-color);
}

.beian-icon {
    width: 16px;
    height: 16px;
    opacity: 0.6;
}

/* ========== 响应式设计 ========== */

@media (max-width: 1024px) {
    .container {
        max-width: 720px;
    }
    
    .profile {
        padding: 4rem 0 3rem;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 15px;
    }
    
    .container {
        padding: 0 1.25rem;
    }
    
    .profile {
        padding: 3.5rem 0 2.5rem;
    }
    
    .avatar {
        width: 100px;
        height: 100px;
    }
    
    .name {
        font-size: 1.75rem;
    }
    
    .bio {
        font-size: 0.9375rem;
    }
    
    .social-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        padding: 0.5rem;
    }
    
    .social-link {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }
    
    .notice-banner {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
        padding: 1rem;
        font-size: 0.875rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .section-title {
        font-size: 1rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.75rem;
    }
}

@media (max-width: 375px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .avatar {
        width: 88px;
        height: 88px;
    }
    
    .name {
        font-size: 1.5rem;
    }
    
    .social-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .social-link {
        justify-content: center;
    }
}

@media (min-width: 1440px) {
    .container {
        max-width: 900px;
    }
    
    body {
        font-size: 17px;
    }
}

.avatar-not-found {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-muted);
    font-weight: 300;
    letter-spacing: -0.02em;
}

@media print {
    .theme-toggle {
        display: none;
    }
    
    .project-card,
    .repo-item {
        break-inside: avoid;
    }
}