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

:root {
    --bg-deep: #0a0a0f;
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: #16162a;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: rgba(255, 255, 255, 0.08);
    --comet: #f472b6;
    --focus-ring: #6366f1;
}

/* Font display swap for better performance */
@font-face {
    font-family: 'Inter';
    font-display: swap;
    src: local('Inter');
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Skip to main content link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    font-weight: 500;
    z-index: 100;
    border-radius: 0 0 4px 0;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

/* Animated stars background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    opacity: 0;
    animation: twinkle ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0; }
    50% { opacity: 0.8; }
}

/* Main content */
main {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 24px;
}

/* Hero section */
.hero {
    text-align: center;
    padding: 60px 0;
}

.avatar {
    font-size: 80px;
    line-height: 1;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--comet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.tagline {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.badges {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.badge {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
}

/* Sections */
section {
    padding: 40px 0;
}

section h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.section-subtitle {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* About */
.about p {
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.8;
}

.about a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.about a:hover {
    text-decoration: underline;
}

/* Project grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 32px var(--accent-glow);
}

.project-card:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 32px var(--accent-glow);
}

.project-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.project-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
    flex: 1;
}

.project-link {
    color: var(--accent);
    font-size: 14px;
    font-weight: 500;
}

/* Connect section */
.connect-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.connect-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

.connect-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.connect-btn:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
    background: var(--accent);
    border-color: var(--accent);
}

.connect-btn svg {
    width: 20px;
    height: 20px;
}

/* Footer */
footer {
    text-align: center;
    padding: 60px 0 40px;
    border-top: 1px solid var(--border);
    margin-top: 40px;
}

footer p {
    color: var(--text-secondary);
}

.footer-sub {
    margin-top: 8px;
    font-size: 14px;
    color: var(--text-muted);
}

footer a {
    color: var(--accent);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

footer a:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Focus visible styles for all interactive elements */
a:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Reduced motion support for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .avatar {
        animation: none;
    }
    
    .star {
        animation: none;
        opacity: 0.5;
    }
    
    .project-card:hover,
    .project-card:focus-visible {
        transform: none;
    }
    
    .connect-btn:hover,
    .connect-btn:focus-visible {
        transform: none;
    }
}

/* Responsive */
@media (max-width: 640px) {
    .hero h1 {
        font-size: 40px;
    }
    
    .tagline {
        font-size: 17px;
    }
    
    .project-grid {
        grid-template-columns: 1fr;
    }
    
    main {
        padding: 40px 20px;
    }
    
    .connect-links {
        flex-direction: column;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border: rgba(255, 255, 255, 0.3);
        --accent: #818cf8;
        --text-secondary: #b8c5d6;
    }
    
    .project-card {
        border-width: 2px;
    }
    
    .connect-btn {
        border-width: 2px;
    }
}