/* 科技感主题配色 */
:root {
    --color-bg: #0A0A1F;
    --color-primary: #00FFFF;
    --color-secondary: #FF00FF;
    --color-text-main: #E0FFFF;
    --color-text-sub: #8F99B7;
    --font-family-title: 'Orbitron', sans-serif;
    --font-family-body: 'Space Mono', monospace;
}

/* 基础重置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-main);
    font-family: var(--font-family-body);
    line-height: 1.6;
    min-height: 100vh;
    position: relative; 
}

/* --------------------------------- */
/* CSS 网格背景效果 (保持不变) */
/* --------------------------------- */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.15;
    background-image: 
        linear-gradient(to right, #1f2746 1px, transparent 1px),
        linear-gradient(to bottom, #1f2746 1px, transparent 1px);
    background-size: 50px 50px; 
    animation: grid-scan 60s linear infinite;
}

@keyframes grid-scan {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

/* 确保内容位于网格之上，并添加平滑的视差过渡 */
.header-grid, .container, .footer, .content-section {
    position: relative;
    z-index: 10;
    transition: transform 0.1s linear; /* 视差效果平滑过渡 */
}


/* 头部导航/英雄区样式 (保持不变) */
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
.header-grid { display: flex; justify-content: space-between; align-items: center; padding: 20px 40px; border-bottom: 1px solid var(--color-primary); box-shadow: 0 0 10px rgba(0, 255, 255, 0.5); margin-bottom: 50px; }
.logo { font-family: var(--font-family-title); font-size: 1.5em; color: var(--color-primary); text-shadow: 0 0 5px var(--color-primary); }
.nav-menu a { color: var(--color-text-sub); text-decoration: none; margin-left: 25px; transition: color 0.3s, text-shadow 0.3s; }
.nav-menu a:hover { color: var(--color-primary); text-shadow: 0 0 8px var(--color-primary); }
.hero-section { text-align: center; padding: 80px 0; position: relative; }
.greeting { color: var(--color-secondary); font-size: 0.9em; margin-bottom: 10px; font-family: var(--font-family-body); }
.typing-text { font-family: var(--font-family-title); font-size: 3.5em; text-transform: uppercase; letter-spacing: 5px; margin-bottom: 15px; width: 0; overflow: hidden; white-space: nowrap; border-right: 4px solid var(--color-primary); animation: typing 4s steps(22, end) forwards, blink-caret 0.75s step-end infinite; }
.subtitle { color: var(--color-text-sub); font-size: 1.2em; margin-bottom: 30px; font-family: var(--font-family-body); }
.neon-line { width: 60%; height: 1px; background: linear-gradient(90deg, transparent, var(--color-secondary), transparent); margin: 30px auto; box-shadow: 0 0 5px var(--color-secondary); }
.cta-button { display: inline-block; padding: 12px 30px; background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); text-decoration: none; text-transform: uppercase; letter-spacing: 2px; transition: all 0.3s; box-shadow: 0 0 15px rgba(0, 255, 255, 0.4); font-family: var(--font-family-title); }
.cta-button:hover { background-color: var(--color-primary); color: var(--color-bg); box-shadow: 0 0 30px var(--color-primary); transform: translateY(-2px); }
.content-section { padding: 40px 0; border-top: 1px dashed var(--color-text-sub); margin-top: 50px; }
.content-section h3 { color: var(--color-primary); font-size: 1.8em; margin-bottom: 20px; text-transform: uppercase; font-family: var(--font-family-title); }
.highlight { color: var(--color-secondary); text-shadow: 0 0 3px var(--color-secondary); font-weight: bold; }

/* --------------------------------- */
/* 项目日志布局优化 (Project Grid) */
/* --------------------------------- */
.project-grid {
    display: grid;
    /* 响应式 Grid 布局，至少 300px 宽度，自动适应 */
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* 媒体占位符 */
.media-placeholder {
    width: 100%;
    height: 150px;
    background-color: #00001f; /* 更深的背景色 */
    border: 1px dashed var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-sub);
    font-size: 0.9em;
    margin-bottom: 15px;
    font-family: var(--font-family-body);
    user-select: none; /* 禁用选择，更像系统界面 */
}

/* 项目卡片 */
.project-card {
    background-color: #1a1a38;
    border-left: 4px solid var(--color-primary);
    padding: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
    /* 移除旧的 margin-top */
}

.project-card:hover {
    transform: translateY(-5px); /* 悬停时向上浮动，增加科技感 */
    box-shadow: 0 10px 20px rgba(0, 255, 255, 0.2);
}

.project-card h4 { color: var(--color-text-main); margin-bottom: 10px; font-family: var(--font-family-title); }
.project-card h4 strong { color: var(--color-primary); }

/* 技术标签 */
.tag {
    display: inline-block;
    background-color: rgba(0, 255, 255, 0.1);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    padding: 3px 8px;
    font-size: 0.7em;
    margin-right: 8px;
    margin-top: 10px;
    text-transform: uppercase;
    font-family: var(--font-family-body);
}

/* 联系信息/底部 (保持不变) */
.contact-list { list-style: none; padding: 0; margin-top: 20px; }
.contact-list li { padding: 10px 0; border-bottom: 1px dashed rgba(255, 255, 255, 0.1); display: flex; }
.contact-list li:last-child { border-bottom: none; }
.label { color: var(--color-text-sub); width: 200px; display: inline-block; font-family: var(--font-family-body); }
.highlight-link { color: var(--color-primary); text-decoration: none; text-shadow: 0 0 5px rgba(0, 255, 255, 0.5); flex-grow: 1; }
.highlight-link:hover { text-decoration: underline; }
.footer { text-align: center; padding: 20px; border-top: 1px solid rgba(255, 0, 255, 0.3); color: var(--color-text-sub); font-size: 0.8em; margin-top: 50px; font-family: var(--font-family-body); }

/* --- 关键帧动画定义 (打字机和故障效果) --- */
@keyframes typing { from { width: 0 } to { width: 100% } }
@keyframes blink-caret { from, to { border-color: transparent } 50% { border-color: var(--color-primary); } }
.glitch-active { position: relative; transform: translateZ(0); }
.glitch-active::before { content: attr(data-glitch); position: absolute; top: 0; left: 0; width: 100%; height: 100%; color: var(--color-secondary); z-index: 5; animation: glitch-anim-1 0.3s infinite linear alternate-reverse; }
.glitch-active::after { content: attr(data-glitch); position: absolute; top: 0; left: 0; width: 100%; height: 100%; color: var(--color-primary); z-index: 5; animation: glitch-anim-2 0.3s infinite linear alternate-reverse; }
@keyframes glitch-anim-1 { 0% { transform: translate(0.5px, 0.5px); clip-path: inset(10% 0 85% 0); } 30% { transform: translate(-1.5px, -1.5px); clip-path: inset(5% 0 80% 0); } 60% { transform: translate(1px, -1px); clip-path: inset(50% 0 20% 0); } 100% { transform: translate(-0.5px, 0.5px); clip-path: inset(70% 0 5% 0); } }
@keyframes glitch-anim-2 { 0% { transform: translate(-0.5px, -0.5px); clip-path: inset(5% 0 90% 0); } 30% { transform: translate(1px, 1px); clip-path: inset(20% 0 75% 0); } 60% { transform: translate(-1px, 1px); clip-path: inset(60% 0 10% 0); } 100% { transform: translate(0.5px, -0.5px); clip-path: inset(80% 0 15% 0); } }