/* ==================== 全局变量 ==================== */
:root {
    /* 暗黑主题 - VS Code 风格 */
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d2d;
    --bg-card: #333333;
    
    --text-primary: #d4d4d4;
    --text-secondary: #808080;
    --text-accent: #9cdcfe;
    
    --accent-color: #007acc;
    --accent-secondary: #4ec9b0;
    --accent-purple: #c586c0;
    --accent-yellow: #dcdcaa;
    --accent-orange: #ce9178;
    --accent-blue: #569cd6;
    
    --border-color: #404040;
    --border-hover: #5a5a5a;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(0, 122, 204, 0.3);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --font-code: 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* 亮色主题 */
:root.light-mode {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e8e8e8;
    --bg-card: #f0f0f0;
    
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-accent: #007acc;
    
    --border-color: #e0e0e0;
    --border-hover: #cccccc;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(0, 122, 204, 0.2);
}

/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: auto;
}

body {
    font-family: var(--font-ui);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ==================== 加载动画 ==================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loading-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
}

.compiler-terminal {
    width: 600px;
    background: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    animation: fadeInScale 0.5s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.terminal-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27c93f; }

.terminal-title {
    margin-left: auto;
    font-family: var(--font-code);
    font-size: 13px;
    color: var(--text-secondary);
}

.terminal-content {
    padding: 20px;
    font-family: var(--font-code);
    font-size: 14px;
    line-height: 1.8;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: 8px;
    animation: fadeInUp 0.3s ease-out both;
}

.terminal-line:nth-child(1) { animation-delay: 0.2s; }
.terminal-line:nth-child(2) { animation-delay: 0.5s; }
.terminal-line:nth-child(3) { animation-delay: 0.8s; }
.terminal-line:nth-child(4) { animation-delay: 1.1s; }
.terminal-line:nth-child(5) { animation-delay: 1.4s; }
.terminal-line:nth-child(6) { animation-delay: 1.7s; }

.prompt {
    color: var(--accent-secondary);
    font-weight: 600;
}

.command {
    color: var(--accent-yellow);
}

.output {
    color: var(--text-secondary);
}

.output.success {
    color: var(--accent-secondary);
}

.loading-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid var(--text-secondary);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.check {
    color: var(--accent-secondary);
    font-weight: bold;
}

.typing-text::after {
    content: '_';
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 主容器 ==================== */
.main-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    padding-bottom: 40px;
}

/* ==================== 顶部导航 ==================== */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    height: 70px;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.avatar-container {
    display: flex;
    align-items: center;
}

.avatar-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.avatar-img:hover {
    transform: rotate(360deg) scale(1.1);
    box-shadow: var(--shadow-glow);
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-family: var(--font-code);
    font-size: 13px;
}

.social-link:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.social-link i {
    font-size: 16px;
    transition: color var(--transition-fast);
}

/* 图标颜色适配 - 暗黑主题 */
.social-link i.fab.fa-github {
    color: var(--text-primary);
}

.social-link i.fab.fa-gitee,
.social-link i.fas.fa-g {
    color: var(--text-primary);
}

.social-link i.fas.fa-envelope {
    color: var(--text-primary);
}

.social-link i.fas.fa-heart {
    color: #ff6b6b;
}

/* 暗黑主题hover效果 */
.social-link:hover i.fab.fa-github,
.social-link:hover i.fab.fa-gitee,
.social-link:hover i.fas.fa-g,
.social-link:hover i.fas.fa-envelope {
    color: white;
}

.social-link:hover i.fas.fa-heart {
    color: white;
}

/* 亮色主题图标颜色 */
:root.light-mode .social-link i.fab.fa-github {
    color: #24292e;
}

:root.light-mode .social-link i.fab.fa-gitee,
:root.light-mode .social-link i.fas.fa-g {
    color: #c71d23;
}

:root.light-mode .social-link i.fas.fa-envelope {
    color: #0084ff;
}

:root.light-mode .social-link i.fas.fa-heart {
    color: #ff6b6b;
}

:root.light-mode .social-link:hover i {
    color: white;
}

.iconfont {
    font-style: normal;
    font-weight: bold;
}

.social-name {
    font-weight: 500;
}

.nav-center {
    display: flex;
    justify-content: center;
    margin-left: 200px;
}

.logo {
    font-family: var(--font-code);
    font-size: 28px;
    font-weight: 700;
}

.logo-bracket {
    color: var(--accent-color);
}

.logo-text {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex: 1;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-code);
    font-size: 13px;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    background: var(--bg-card);
    color: var(--accent-color);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 16px;
}

.theme-toggle:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
    transform: rotate(180deg);
}

/* ==================== 主要内容区 ==================== */
.main-content {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding-bottom: 20px;
    min-height: 0;
}

/* ==================== 代码编辑器 ==================== */
.code-editor {
    background: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.editor-title {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--text-secondary);
}

.editor-languages {
    display: flex;
    gap: 4px;
}

.lang-btn {
    padding: 4px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-family: var(--font-code);
    font-size: 11px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.editor-content {
    padding: 16px;
    font-family: var(--font-code);
    font-size: 13px;
    line-height: 1.8;
}

.code-line {
    display: flex;
    align-items: center;
    gap: 16px;
}

.line-number {
    color: var(--text-secondary);
    font-size: 12px;
    user-select: none;
    min-width: 24px;
}

.code-keyword {
    color: var(--accent-purple);
}

.code-variable {
    color: var(--accent-blue);
}

.code-string {
    color: var(--accent-orange);
}

.code-operator {
    color: var(--text-secondary);
}

.code-function {
    color: var(--accent-secondary);
}

.code-punctuation {
    color: var(--text-secondary);
}

.code-number {
    color: var(--accent-yellow);
}

.code-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--accent-color);
    animation: blink 1s infinite;
    vertical-align: middle;
}

.typing-text {
    color: var(--accent-yellow);
}

/* ==================== 技能展示 ==================== */
.skills-visual,
.backend-skills {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.skills-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-family: var(--font-code);
    font-size: 14px;
    color: var(--text-primary);
}

.skills-title i {
    color: var(--accent-color);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skill-code {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 12px;
    border: 1px solid var(--border-color);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-family: var(--font-code);
    font-size: 13px;
}

.skill-name {
    color: var(--accent-blue);
    font-weight: 600;
}

.skill-percent {
    color: var(--accent-secondary);
}

.skill-execution {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-code);
    font-size: 12px;
    margin-bottom: 8px;
}

/* 前端技能标签样式 */
.skill-tag-link {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

.skill-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.skill-tag:hover {
    border-color: var(--accent-color);
    transform: translateX(4px);
    box-shadow: var(--shadow-glow);
}

.skill-tag i {
    color: var(--accent-color);
    font-size: 14px;
}

.skill-tag .skill-name {
    color: var(--text-primary);
    font-family: var(--font-code);
    font-size: 13px;
    font-weight: 500;
}

.skill-tag .skill-level {
    margin-left: auto;
    color: var(--accent-secondary);
    font-family: var(--font-code);
    font-size: 12px;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.skill-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-purple));
    border-radius: 2px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shine 2s infinite;
}

@keyframes shine {
    to { left: 100%; }
}

/* ==================== 数据流图表 ==================== */
.dataflow-diagram {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.flow-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    font-family: var(--font-code);
    font-size: 14px;
    color: var(--text-primary);
}

.flow-title i {
    color: var(--accent-color);
}

.flow-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.flow-step {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    transition: all var(--transition-normal);
}

.flow-step:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.step-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-purple));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.step-content {
    font-family: var(--font-code);
}

.step-title {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.step-code {
    font-size: 11px;
    color: var(--accent-secondary);
}

.flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    position: relative;
}

.flow-icon {
    color: var(--accent-color);
    font-size: 18px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

.data-packet {
    position: relative;
    padding: 4px 8px;
    background: var(--accent-color);
    border-radius: 4px;
    color: white;
    font-family: var(--font-code);
    font-size: 10px;
    animation: flow 2s ease-in-out infinite;
    display: inline-block;
}

@keyframes flow {
    0%, 100% { opacity: 0.5; transform: translateX(-10px); }
    50% { opacity: 1; transform: translateX(10px); }
}

/* ==================== 后端技能 ==================== */
.backend-skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

/* ==================== 项目展示 ==================== */
.projects-showcase {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.projects-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-family: var(--font-code);
    font-size: 14px;
    color: var(--text-primary);
}

.projects-title i {
    color: var(--accent-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 12px;
}

.projects-grid:last-child {
    margin-bottom: 0;
}

.project-category-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 16px 0 12px 0;
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.project-category-label i {
    color: var(--accent-color);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    transition: all var(--transition-normal);
}

.project-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.project-header h3 {
    font-family: var(--font-code);
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
}

.project-header a {
    color: var(--accent-color);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.project-header a:hover {
    color: var(--accent-secondary);
}

.project-name {
    font-family: var(--font-code);
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 600;
}

.project-star {
    color: var(--accent-yellow);
    font-size: 14px;
}

.project-desc {
    font-family: var(--font-code);
    font-size: 11px;
    margin-bottom: 10px;
    line-height: 1.6;
    color: var(--text-primary);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.project-tags .tag {
    padding: 3px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-family: var(--font-code);
    font-size: 10px;
    color: var(--accent-secondary);
    border: 1px solid var(--border-color);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-badge {
    padding: 3px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-family: var(--font-code);
    font-size: 10px;
    color: var(--accent-secondary);
    border: 1px solid var(--border-color);
}

.backend-skill-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.backend-skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.backend-skill-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

/* 后端技能卡片内的样式 - 兼容新的HTML结构 */
.backend-skill-card .skill-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
}

.backend-skill-card .skill-header i {
    font-size: 18px;
    color: var(--accent-color);
}

.backend-skill-card .skill-header .skill-name {
    font-family: var(--font-code);
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 600;
}

.backend-skill-card .skill-level {
    display: flex;
    align-items: center;
    gap: 12px;
}

.backend-skill-card .skill-level .skill-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.backend-skill-card .skill-level .skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-purple));
    border-radius: 3px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.backend-skill-card .skill-level .skill-percent {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--accent-secondary);
    min-width: 40px;
    text-align: right;
}

/* 原有样式保留 */
.skill-icon-box {
    width: 40px;
    height: 40px;
    margin: 0 auto 12px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-purple));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: white;
}

.skill-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-family: var(--font-code);
    font-size: 12px;
}

.skill-info .skill-name {
    color: var(--text-primary);
}

/* ==================== 终端时间线 ==================== */
.terminal-timeline {
    grid-column: 1 / -1;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-top: 20px;
}

.timeline-content {
    padding: 16px 20px;
    font-family: var(--font-code);
    font-size: 13px;
    line-height: 2;
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 60px 1fr;
    gap: 20px;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    animation: fadeInUp 0.5s ease-out both;
}

.timeline-item:nth-child(1) { animation-delay: 0.2s; }
.timeline-item:nth-child(2) { animation-delay: 0.4s; }
.timeline-item:nth-child(3) { animation-delay: 0.6s; }

.timeline-commit {
    color: var(--accent-purple);
    font-weight: 600;
}

.timeline-date {
    color: var(--accent-secondary);
}

.timeline-message {
    color: var(--text-primary);
}

.terminal-prompt {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    margin-top: 8px;
}

.prompt-symbol {
    color: var(--accent-secondary);
    font-weight: 600;
}

.prompt-text {
    color: var(--accent-yellow);
}

.prompt-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--accent-color);
    animation: blink 1s infinite;
}

/* ==================== 模态框 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-family: var(--font-code);
    font-size: 18px;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--accent-color);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-code);
    font-size: 13px;
}

kbd {
    padding: 6px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 12px;
    color: var(--text-primary);
}

.shortcut-item span {
    color: var(--text-secondary);
}

/* ==================== 打赏模态框 ==================== */
.sponsor-content {
    max-width: 500px;
    text-align: center;
}

.sponsor-body {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sponsor-message {
    padding: 20px;
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.sponsor-message p {
    font-family: var(--font-ui);
    color: var(--text-primary);
    line-height: 1.6;
    margin: 8px 0;
}

.signature-sign {
    color: var(--accent-color);
    font-weight: 600;
    font-style: italic;
    margin-top: 12px;
}

.qr-codes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.qr-code {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    transition: all var(--transition-normal);
}

.qr-code:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.qr-image {
    width: 120px;
    height: 120px;
    margin: 0 auto 12px;
    border-radius: 12px;
    display: block;
    object-fit: cover;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.qr-image:hover {
    transform: scale(1.05);
}

.qr-placeholder {
    width: 120px;
    height: 120px;
    margin: 0 auto 12px;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 48px;
}

.qr-code p {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* ==================== 搭讪区域 ==================== */
.pickup-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-top: 10px;
}

.pickup-header {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 12px;
}

.pickup-description {
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.pickup-contacts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.pickup-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-code);
    font-size: 12px;
    transition: all var(--transition-normal);
}

.pickup-contact:hover {
    border-color: var(--accent-color);
    background: var(--bg-card);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.pickup-contact i {
    color: var(--accent-color);
    font-size: 14px;
    flex-shrink: 0;
}

.pickup-contact[data-type="wechat"] i {
    color: #07c160;
}

.pickup-contact[data-type="qq"] i {
    color: #12b7f5;
}

.pickup-contact[data-type="email"] i {
    color: var(--accent-secondary);
}

.pickup-contact[data-type="social"] i {
    color: var(--accent-purple);
}

/* ==================== 个性签名 ==================== */
.code-comment {
    color: var(--text-secondary);
    font-style: italic;
}

.signature-line {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px dashed var(--border-color);
}

/* ==================== 区域切换 ==================== */
.zone-header {
    cursor: pointer;
    position: relative;
}

.zone-toggle {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 11px;
    color: var(--accent-color);
    font-family: var(--font-code);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.zone-header:hover .zone-toggle {
    opacity: 1;
}

.frontend-zone.hidden .code-editor,
.backend-zone.hidden .dataflow-diagram {
    display: none;
}

.code-editor,
.dataflow-diagram {
    transition: all var(--transition-normal);
}

.icp-number {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 8px;
}

.icp-number a {
    color: var(--text-secondary);
    text-decoration: none;
}

.icp-number a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    /* 基础布局调整 */
    body {
        font-size: 14px;
    }
    
    /* 导航栏优化 - 重新设计 */
    .top-nav {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 12px;
        padding: 15px 10px;
        overflow: visible;
        height: auto !important;
        min-height: auto;
    }
    
    /* 第一行：头像和名字 */
    .nav-center {
        order: 1;
        width: 100%;
        text-align: center;
        margin: 0;
        padding: 5px 0;
    }
    
    /* 第二行：联系链接 */
    .nav-left {
        order: 2;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 10px;
        padding: 5px 0;
        min-height: 80px;
        border: 1px solid transparent;
    }
    
    /* 第三行：主题切换 */
    .nav-right {
        order: 3;
        width: 100%;
        display: flex;
        justify-content: center;
        gap: 8px;
        padding: 5px 0;
    }

    .avatar-container {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
    }

    .social-links {
        display: flex !important;
        flex-wrap: wrap;
        gap: 6px;
        justify-content: center;
        width: 100%;
        min-height: 30px;
        visibility: visible;
        opacity: 1;
    }
    
    .social-link {
        padding: 6px 12px;
        font-size: 12px;
        display: flex;
        align-items: center;
        border-radius: 15px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        text-decoration: none;
        visibility: visible;
        opacity: 1;
    }
    
    .avatar-img {
        width: 45px;
        height: 45px;
        border-radius: 50%;
        object-fit: cover;
        display: block;
        max-width: 100%;
        max-height: 100%;
    }
    
    /* 主题切换按钮 */
    .theme-toggle {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
    }

    .social-name {
        display: none;
    }

    .logo {
        font-size: 20px;
    }

    .nav-actions {
        gap: 8px;
    }

    .nav-link span {
        display: none;
    }

    .theme-toggle {
        width: 34px;
        height: 34px;
    }

    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        gap: 15px;
        padding: 10px;
        overflow-y: auto;
    }

    .frontend-zone,
    .backend-zone {
        padding: 14px;
    }

    .code-editor {
        font-size: 10px;
    }

    .editor-content {
        padding: 10px;
    }

    .skills-visual,
    .backend-skills,
    .dataflow-diagram {
        padding: 10px;
    }

    .flow-container {
        flex-direction: column;
        gap: 14px;
    }

    .flow-arrow {
        width: 100%;
        height: 40px;
        margin: 5px 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: relative;
    }

    .flow-icon {
        transform: rotate(90deg);
        font-size: 20px;
        color: var(--accent-color);
        margin-bottom: 0;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) rotate(90deg);
    }
    
    .data-packet {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-top: 0;
        animation: flow-mobile 2s ease-in-out infinite;
        position: absolute;
        top: 100%;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .data-packet .packet-label {
        font-size: 10px;
        color: white;
        background: var(--accent-color);
        padding: 2px 6px;
        border-radius: 4px;
        font-family: var(--font-code);
    }
    
    /* 移动设备的数据流动画 */
    @keyframes flow-mobile {
        0%, 100% { opacity: 0.5; transform: translateX(-50%) translateY(-5px); }
        50% { opacity: 1; transform: translateX(-50%) translateY(5px); }
    }
    
    /* 调整模块间距 */
    .flow-step {
        margin: 10px 0;
        padding: 10px;
        background: var(--bg-card);
        border-radius: 8px;
    }
    
    .flow-container {
        gap: 10px;
    }

    .backend-skills-grid {
        grid-template-columns: 1fr;
    }

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

    .project-card {
        padding: 10px;
    }

    .terminal-timeline {
        margin-top: 12px;
    }

    .timeline-content {
        padding: 10px;
        font-size: 10px;
    }

    .timeline-item {
        grid-template-columns: 60px 40px 1fr;
        gap: 8px;
    }

    .compiler-terminal {
        width: 95%;
        font-size: 12px;
    }

    .terminal-content {
        padding: 14px;
    }

    /* 模态框适配 */
    .modal-content {
        max-width: 95%;
        padding: 18px;
    }

    .qr-codes {
        grid-template-columns: 1fr;
    }
    
    /* 确保所有元素都能正确显示 */
    * {
        max-width: 100%;
        box-sizing: border-box;
    }
}

/* 针对小屏幕手机的额外优化 */
@media (max-width: 480px) {
    /* 更小屏幕的额外优化 */
    .logo {
        font-size: 20px;
    }
    
    .code-editor {
        font-size: 10px;
    }
    
    .editor-content {
        padding: 10px;
        min-height: 100px;
    }
    
    .terminal-timeline {
        margin-top: 10px;
    }
    
    .timeline-content {
        font-size: 9px;
        padding: 10px;
    }
    
    .frontend-zone,
    .backend-zone {
        padding: 12px;
    }
    
    .main-content {
        padding: 5px;
        gap: 10px;
    }
    
    .flow-step {
        padding: 10px;
    }
    
    .step-icon {
        width: 36px;
        height: 36px;
    }
    
    .step-title {
        font-size: 12px;
    }
    
    .step-code {
        font-size: 10px;
    }
    
    .backend-skill-card {
        padding: 10px;
    }
    
    .skill-name {
        font-size: 12px;
    }
    
    .project-card {
        padding: 10px;
    }
    
    .project-title {
        font-size: 12px;
    }
    
    .project-description {
        font-size: 10px;
    }
    
    .copyright-line {
        font-size: 11px;
    }
    
    .copyright-item {
        font-size: 11px;
    }
    
    .footer-links a {
        font-size: 11px;
        padding: 3px 8px;
    }
}

/* ==================== 移动设备全新布局 (768px以下) ====================
   完全重新设计移动设备的布局，保持桌面版不变
*/
@media (max-width: 768px) {
    /* 全局调整 */
    body {
        font-size: 14px;
    }
    
    /* 主容器 */
    .main-container {
        padding: 0 10px;
        padding-bottom: 30px;
    }
    
    /* 顶部导航栏 - 完全重新设计 */
    .top-nav {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        padding: 15px 10px;
        height: auto !important;
        min-height: auto;
        background: var(--bg-secondary);
        border-radius: 0 0 12px 12px;
        box-shadow: var(--shadow-md);
        margin-bottom: 15px;
    }
    
    /* 导航左侧 - 头像和社交链接 */
    .nav-left {
        order: 2;
        width: 100%;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 0;
    }
    
    /* 头像容器 */
    .avatar-container {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
    }
    
    /* 头像 */
    .avatar-img {
        width: 60px;
        height: 60px;
        border: 3px solid var(--accent-color);
    }
    
    /* 社交链接 - 水平滚动 */
    .social-links {
        display: flex;
        flex-wrap: nowrap;
        gap: 8px;
        justify-content: flex-start;
        width: 100%;
        overflow-x: auto;
        padding: 5px 0;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .social-links::-webkit-scrollbar {
        display: none;
    }
    
    /* 社交链接项 */
    .social-link {
        padding: 6px 12px;
        font-size: 12px;
        white-space: nowrap;
        border-radius: 16px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
    }
    
    /* 导航中心 - 名字 */
    .nav-center {
        order: 1;
        width: 100%;
        text-align: center;
        margin: 0;
        padding: 0;
    }
    
    /* Logo */
    .logo {
        font-size: 24px;
    }
    
    /* 导航右侧 - 主题切换 */
    .nav-right {
        order: 3;
        width: 100%;
        justify-content: center;
        padding: 0;
    }
    
    /* 主题切换按钮 */
    .theme-toggle {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        font-size: 18px;
    }
    
    /* 主要内容区 - 垂直排列 */
    .main-content {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        gap: 15px;
        padding: 0 5px;
    }
    
    /* 前后端区域 */
    .frontend-zone,
    .backend-zone {
        padding: 15px;
        border-radius: 12px;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-sm);
    }
    
    /* 区域标题 */
    .zone-header {
        padding: 12px;
        margin: -15px -15px 15px -15px;
        background: var(--bg-tertiary);
        border-radius: 12px 12px 0 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    /* 代码编辑器 */
    .code-editor {
        font-size: 11px;
        border-radius: 8px;
        margin-top: 10px;
    }
    
    /* 编辑器内容 */
    .editor-content {
        padding: 12px;
        line-height: 1.6;
        min-height: 120px;
    }
    
    /* 编辑器语言切换 */
    .editor-languages {
        gap: 6px;
    }
    
    .lang-btn {
        padding: 5px 12px;
        font-size: 11px;
    }
    
    /* 技能标签 */
    .skill-tags {
        gap: 6px;
        flex-wrap: wrap;
        margin-top: 10px;
    }
    
    .skill-tag {
        padding: 5px 12px;
        font-size: 10px;
        border-radius: 12px;
    }
    
    /* 数据流图表 */
    .dataflow-diagram {
        padding: 12px;
        margin-top: 10px;
    }
    
    .flow-title {
        font-size: 14px;
        margin-bottom: 12px;
    }
    
    .flow-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .flow-step {
        padding: 12px;
        border-radius: 8px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
    }
    
    .step-icon {
        width: 40px;
        height: 40px;
        margin: 0 auto 8px;
    }
    
    .step-title {
        font-size: 13px;
        margin-bottom: 4px;
    }
    
    .step-code {
        font-size: 11px;
        line-height: 1.4;
    }
    
    .flow-arrow {
        width: 100%;
        height: 40px;
        margin: 5px 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .flow-icon {
        transform: rotate(90deg);
        font-size: 20px;
        color: var(--accent-color);
    }
    
    /* 后端技能 */
    .backend-skills {
        margin-top: 15px;
    }
    
    .skills-title {
        font-size: 14px;
        margin-bottom: 12px;
    }
    
    .backend-skills-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .backend-skill-card {
        padding: 12px;
        border-radius: 8px;
    }
    
    .skill-name {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .skill-level {
        font-size: 11px;
    }
    
    /* 项目展示 */
    .projects-showcase {
        margin-top: 15px;
        padding: 12px;
        border-radius: 8px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
    }
    
    .projects-title {
        font-size: 14px;
        margin-bottom: 12px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    /* 项目卡片 */
    .project-card {
        padding: 12px;
        border-radius: 6px;
        background: var(--bg-primary);
        border: 1px solid var(--border-color);
    }
    
    .project-title {
        font-size: 13px;
        margin-bottom: 4px;
    }
    
    .project-description {
        font-size: 11px;
        line-height: 1.4;
        margin-bottom: 8px;
    }
    
    .project-tags {
        gap: 4px;
        margin-bottom: 8px;
    }
    
    .project-tag {
        padding: 3px 8px;
        font-size: 9px;
        border-radius: 10px;
    }
    
    .project-link {
        font-size: 11px;
    }
    
    /* 时间线 */
    .terminal-timeline {
        margin-top: 15px;
        border-radius: 8px;
        border: 1px solid var(--border-color);
    }
    
    .terminal-header {
        padding: 10px 12px;
    }
    
    .timeline-content {
        font-size: 10px;
        line-height: 1.6;
        padding: 12px;
    }
    
    .timeline-item {
        margin-bottom: 8px;
    }
    
    .timeline-item:last-child {
        margin-bottom: 0;
    }
    
    /* 页尾 */
    .site-footer {
        padding: 1.5rem 0;
        margin-top: 2rem;
        background: var(--bg-secondary);
        border-radius: 12px 12px 0 0;
        box-shadow: var(--shadow-md) inset;
    }
    
    .footer-content {
        padding: 0 1rem;
        text-align: center;
    }
    
    .copyright-line {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
        height: auto;
        font-size: 12px;
    }
    
    .copyright-item {
        flex-direction: row;
        gap: 0.3rem;
        height: auto;
        justify-content: center;
        font-size: 12px;
    }
    
    .copyright-item i {
        font-size: 12px;
        margin-right: 4px;
    }
    
    .separator {
        margin: 0 0.3rem;
        font-size: 12px;
    }
    
    .footer-links {
        gap: 0.8rem;
        flex-wrap: wrap;
        margin-top: 1rem;
        justify-content: center;
    }
    
    .footer-links a {
        font-size: 12px;
        padding: 4px 10px;
        border-radius: 12px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
    }
    
    .footer-links a:hover {
        background: var(--accent-color);
        border-color: var(--accent-color);
        color: white;
    }
    
    /* 社交名称在移动设备上隐藏 */
    .social-name {
        display: none;
    }
    
    /* 导航链接文本在移动设备上隐藏 */
    .nav-link span {
        display: none;
    }
}

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-card);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}