:root {
    --bg-color: #0f172a;
    --text-color: #f1f5f9;
    --text-secondary: #cbd5e1;
    --accent-color: #4ade80;
    --border-color: #334155;
    --hover-color: #1e293b;
}
[data-theme="light"] { --bg-color: #FFFFFF; --text-color: #1e293b; --text-secondary: #64748b; --accent-color: #22c55e; --border-color: #e2e8f0; --hover-color: #f8fafc; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background-color: var(--bg-color); color: var(--text-color); line-height: 1.5; font-size: 14px; -webkit-font-smoothing: antialiased; }
.container { max-width: 640px; margin: 0 auto; padding: 0 20px; }
header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(15, 23, 42, .9); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-color); }
[data-theme="light"] header { background: rgba(254, 254, 254, .9); }
.header-content { height: 60px; padding: 0 20px; }
.logo { position: absolute; top: 12px; left: 20px; display: flex; align-items: center; }
.logo img { width: 36px; height: 36px; border-radius: 50%; }
.theme-toggle { position: absolute; top: 14px; right: 20px; cursor: pointer; user-select: none; }
.theme-toggle-track { width: 60px; height: 32px; background: var(--hover-color); border: 1px solid var(--border-color); border-radius: 16px; position: relative; transition: all .3s ease; overflow: hidden; }
.theme-toggle-track::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, var(--accent-color)); opacity: 0; transition: opacity .3s ease; }
.theme-toggle-thumb { width: 24px; height: 24px; background: var(--text-color); border-radius: 50%; position: absolute; top: 3px; left: 3px; transition: all .3s ease; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(0,0,0,.2); }
.theme-icon { font-size: 12px; }
[data-theme="light"] .theme-toggle-track { background: var(--accent-color); border-color: var(--accent-color); }
[data-theme="light"] .theme-toggle-track::before { opacity: 1; }
[data-theme="light"] .theme-toggle-thumb { transform: translateX(28px); background: white; }
.theme-toggle:hover .theme-toggle-track { transform: scale(1.05); }
main { padding-top: 80px; padding-bottom: 40px; }
.profile { text-align: center; margin-bottom: 60px; }
.profile-image { width: 100px; height: 100px; border-radius: 50%; margin: 0 auto 24px; display: block; object-fit: cover; border: 2px solid var(--border-color); }
h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.subtitle { color: var(--text-secondary); font-size: 14px; margin-bottom: 16px; }
section { margin-bottom: 60px; }
h2 { font-size: 16px; font-weight: 400; margin-bottom: 16px; letter-spacing: .5px; }
h3 { font-size: 16px; font-weight: 400; margin-bottom: 6px; }
p { color: var(--text-secondary); margin-bottom: 14px; font-size: 14px; }
.skills-grid { display: flex; flex-direction: column; gap: 20px; }
.skill-category { padding: 0; }
.skill-category:hover { transform: translateX(8px); }
.skill-category h3 { margin-bottom: 12px; font-size: 14px; color: var(--text-secondary); padding-bottom: 8px; border-bottom: 1px solid var(--border-color); }
.skill-category h3::before { content: '●'; color: var(--accent-color); font-size: 12px; margin-right: 8px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.skill-tag { display: inline-block; padding: 6px 12px; background: none; border: 1px solid var(--border-color); border-radius: 20px; font-size: 12px; color: var(--text-secondary); transition: all .3s ease; }
.skill-tag.featured { color: var(--text-color); font-weight: 500; border-color: var(--accent-color); }
.skill-tag:hover { border-color: var(--accent-color); color: var(--text-color); }
.work-item { margin-bottom: 40px; }
.work-meta { color: var(--text-secondary); font-size: 12px; margin-bottom: 4px; }
.work-item h3 { font-size: 14px; color: var(--text-secondary); }
.work-company { color: var(--accent-color); text-decoration: none; font-weight: 600; }
.work-company:hover { text-decoration: underline; }
.tech-stack { color: var(--text-secondary); font-size: 12px; font-style: italic; margin-top: 6px; }
.project-item { margin-bottom: 40px; }
.project-header { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; margin-bottom: 12px; }
.project-icon { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 14px; background: linear-gradient(135deg, rgba(76,161,175,.18), rgba(196,224,229,.04)); box-shadow: inset 0 0 0 1px var(--border-color); font-size: 22px; }
.project-title { font-size: 14px; color: var(--text-secondary); }
.links-grid { display: flex; flex-direction: column; gap: 12px; max-width: 300px; }
.link-item { display: flex; align-items: center; justify-content: space-between; color: var(--text-color); text-decoration: none; padding: 12px 0; border-bottom: 1px solid var(--border-color); transition: all .3s ease; }
.link-item:hover { color: var(--accent-color); transform: translateX(8px); }
.link-content { display: flex; align-items: center; gap: 12px; }
.link-icon { font-size: 18px; min-width: 24px; }
.link-details { display: flex; flex-direction: column; }
.link-title { font-weight: 600; margin-bottom: 4px; font-size: 14px; }
.link-handle { color: var(--text-secondary); font-size: 12px; }
.link-arrow { font-size: 16px; opacity: .6; }
.resume-card { max-width: 400px; }
.resume-icon { font-size: 24px; margin-bottom: 12px; display: inline-block; }
.resume-card h3 { font-size: 18px; font-weight: 500; margin-bottom: 8px; color: var(--text-color); }
.resume-card p { margin-bottom: 20px; line-height: 1.6; }
.download-btn { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-color); text-decoration: none; padding: 8px 0; font-weight: 500; border-bottom: 1px solid var(--accent-color); }
@media (max-width: 768px) { .container { padding: 0 16px; } .header-content { padding: 0 16px; } .logo { left: 16px; } .theme-toggle { right: 16px; } h1 { font-size: 24px; } }