.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 80px 0;
}

@media (max-width: 768px) {
    section {
        padding: 60px 0;
    }
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition), border-color var(--transition);
}

[data-theme="dark"] .header {
    background: rgba(13, 17, 23, 0.85);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo:hover {
    color: var(--accent-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.theme-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1rem;
    transition: all var(--transition);
}

.theme-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

@media (max-width: 640px) {
    .nav-links {
        gap: 20px;
    }
    
    .nav-links a:not(#theme-toggle) span {
        display: none;
    }
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 64px;
}

.hero-content {
    max-width: 600px;
    padding: 40px 24px;
}

.avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--accent-color), #34d399);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    box-shadow: var(--shadow-lg);
}

.hero h1 {
    margin-bottom: 12px;
    letter-spacing: -1px;
}

.highlight {
    background: linear-gradient(135deg, var(--accent-color), #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.intro {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.social-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition);
    border: 1px solid var(--border-color);
}

.social-links a:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.about h2,
.projects h2,
.contact h2 {
    text-align: center;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.about-content {
    max-width: 700px;
    margin: 0 auto 40px;
    text-align: center;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about h3 {
    text-align: center;
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    font-weight: 500;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.skill-tag {
    padding: 6px 14px;
    border-radius: var(--radius-lg);
    background: var(--code-bg);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
}

.skill-tag:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-1px);
}

.section-desc {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 0.95rem;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: all var(--transition);
}

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

.project-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.project-card h3 {
    margin-bottom: 10px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.project-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.project-tags span {
    padding: 3px 10px;
    border-radius: 4px;
    background: var(--code-bg);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
}

.project-link {
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition);
}

.project-link:hover {
    gap: 8px;
    text-decoration: none;
}

.contact {
    text-align: center;
    background: var(--bg-secondary);
}

.contact p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.contact-btn.email {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

.contact-btn.email:hover {
    background: var(--accent-hover);
}

.contact-btn .icon {
    font-size: 1.1rem;
}

.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links {
    margin-top: 12px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

.footer-links span {
    margin: 0 8px;
    color: var(--border-color);
}