/* GitHub复古配色方案 */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent-blue: #58a6ff;
    --accent-green: #7c3aed;
    --accent-purple: #a5a5f6;
    --border-color: #30363d;
    --hover-bg: #21262d;
}

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

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* 项目展示区域 */
.project-showcase {
    margin-bottom: 4rem;
    padding: 2rem 0;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(88, 166, 255, 0.15);
}

.project-title {
    color: var(--accent-blue);
    font-size: 2rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.project-description {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.project-link:hover {
    background: var(--hover-bg);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.github-link:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.demo-link:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

/* YouTube视频展示 */
.video-showcase {
    margin-bottom: 4rem;
    text-align: center;
}

.video-container {
    display: inline-block;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.video-container:hover {
    transform: scale(1.02);
}

.video-link {
    display: block;
    position: relative;
}

.video-thumbnail {
    position: relative;
    width: 560px;
    max-width: 100%;
    height: auto;
}

.video-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.play-overlay:hover {
    background: rgba(0, 0, 0, 0.5);
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #333;
    transition: all 0.3s ease;
}

.play-button:hover {
    background: white;
    transform: scale(1.1);
}

/* 个人标语 */
.motto-section {
    margin-bottom: 4rem;
    text-align: center;
    padding: 3rem 0;
}

.motto {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--accent-purple);
    margin: 0;
    min-height: 3rem;
}

/* 打字机效果 */
.typewriter {
    border-right: 3px solid var(--accent-purple);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { border-color: var(--accent-purple); }
    51%, 100% { border-color: transparent; }
}

/* 浮动标签云 */
.tags-section {
    margin-bottom: 4rem;
    position: relative;
    height: 300px;
    overflow: hidden;
}

.floating-tags {
    position: relative;
    width: 100%;
    height: 100%;
}

.tag {
    position: absolute;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    white-space: nowrap;
    cursor: default;
    transition: all 0.3s ease;
    animation: float 20s infinite linear;
}

.tag:hover {
    background: var(--accent-blue);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.tag:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.tag:nth-child(2) { top: 50%; left: 80%; animation-delay: -2s; }
.tag:nth-child(3) { top: 80%; left: 20%; animation-delay: -4s; }
.tag:nth-child(4) { top: 30%; left: 70%; animation-delay: -6s; }
.tag:nth-child(5) { top: 70%; left: 60%; animation-delay: -8s; }
.tag:nth-child(6) { top: 40%; left: 30%; animation-delay: -10s; }
.tag:nth-child(7) { top: 60%; left: 90%; animation-delay: -12s; }
.tag:nth-child(8) { top: 10%; left: 50%; animation-delay: -14s; }
.tag:nth-child(9) { top: 90%; left: 40%; animation-delay: -16s; }
.tag:nth-child(10) { top: 25%; left: 5%; animation-delay: -18s; }
.tag:nth-child(11) { top: 75%; left: 75%; animation-delay: -1s; }
.tag:nth-child(12) { top: 45%; left: 15%; animation-delay: -3s; }

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(1deg); }
    50% { transform: translateY(0px) rotate(0deg); }
    75% { transform: translateY(-15px) rotate(-1deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

/* 文章预留区域 */
.articles-section {
    margin-bottom: 4rem;
    text-align: center;
}

.articles-placeholder {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 3rem;
}

.articles-placeholder h3 {
    color: var(--accent-purple);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.placeholder-text {
    color: var(--text-secondary);
    font-style: italic;
}

/* 社交链接 */
.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.social-link.github:hover {
    color: var(--accent-blue);
}

.social-link.twitter:hover {
    color: #1da1f2;
}

.social-link.youtube:hover {
    color: #ff0000;
}

.social-link svg {
    transition: transform 0.3s ease;
}

.social-link:hover svg {
    transform: scale(1.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .motto {
        font-size: 1.8rem;
    }
    
    .project-title {
        font-size: 1.5rem;
    }
    
    .video-thumbnail {
        width: 100%;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .tags-section {
        height: 200px;
    }
    
    .tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.8rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

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

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

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