:root {
    --bg-dark: #0a0e27;
    --bg-card: #151932;
    --accent: #00d9ff;
    --accent-hover: #00b8d4;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --border: #27293d;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

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

header {
    text-align: center;
    padding: 4rem 0;
    border-bottom: 1px solid var(--border);
}

.profile .avatar {
    font-size: 4rem;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent), #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

nav {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 2rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

nav a:hover {
    color: var(--accent);
    background: rgba(0, 217, 255, 0.1);
}

.section {
    padding: 4rem 0;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--accent);
}

.skills-grid,
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill-card,
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: transform 0.3s, border-color 0.3s;
}

.skill-card:hover,
.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.skill-card h3,
.project-card h3 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.skill-card ul {
    list-style: none;
}

.skill-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.skill-card li:before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.tags span {
    background: rgba(0, 217, 255, 0.1);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.contact-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.contact-btn {
    background: var(--bg-card);
    color: var(--accent);
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    border: 1px solid var(--accent);
    transition: all 0.3s;
    font-weight: 500;
}

.contact-btn:hover {
    background: var(--accent);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
    margin-top: 4rem;
}

#about p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    nav {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .contact-links {
        flex-direction: column;
        align-items: center;
    }
}