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

:root {
    --primary: #0ea5e9;
    --secondary: #8b5cf6;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --gray: #64748b;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--light);
    background: var(--darker);
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(14, 165, 233, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--gray);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.tag {
    padding: 0.5rem 1.5rem;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary);
}

/* About Section */
.about {
    padding: 6rem 2rem;
    background: var(--dark);
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
}

.lead {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.about p {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto 1rem;
}

/* Topics Section */
.topics {
    padding: 6rem 2rem;
    background: var(--darker);
}

.topics h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.topic-card {
    padding: 2rem;
    background: var(--dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s;
}

.topic-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.2);
}

.topic-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.topic-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.topic-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* Projects Section */
.projects {
    padding: 6rem 2rem;
    background: var(--dark);
}

.projects h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    padding: 2rem;
    background: var(--darker);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.project-header h3 {
    font-size: 1.5rem;
    color: var(--light);
}

.project-status {
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.2);
    border: 1px solid var(--secondary);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--secondary);
}

.project-card p {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.project-tags span {
    padding: 0.25rem 0.75rem;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.3);
    border-radius: 5px;
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary);
}

/* Contact Section */
.contact {
    padding: 6rem 2rem;
    background: var(--darker);
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.contact-intro {
    text-align: center;
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 3rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    padding: 2rem;
    background: var(--dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
}

.contact-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.contact-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    padding: 3rem 2rem;
    background: var(--dark);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

footer p {
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.footer-note {
    font-size: 0.9rem;
    font-style: italic;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .topics-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}