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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --bg-dark: #0f172a;
    --card-bg: #1e293b;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--light);
    line-height: 1.6;
}

body.dark {
    --dark: #f8fafc;
    --light: #1e293b;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

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

.theme-toggle {
    background: transparent;
    border: 2px solid var(--primary);
    color: white;
    padding: 8px 15px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1.2rem;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 50px;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.greeting {
    font-size: 1.2rem;
    color: var(--secondary);
    font-weight: 500;
}

.hero h1 {
    font-size: 3.5rem;
    margin: 10px 0;
    line-height: 1.2;
}

.highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 15px;
}

.bio {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 25px;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
}

.btn {
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary);
    color: white;
}

.btn-secondary:hover {
    background: var(--primary);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    font-size: 1.5rem;
    text-decoration: none;
    transition: transform 0.3s;
}

.social-links a:hover {
    transform: scale(1.2);
}

/* Code Window */
.code-window {
    background: #1e1e1e;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.window-header {
    background: #2d2d2d;
    padding: 12px 15px;
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.code-window pre {
    padding: 20px;
    font-family: 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

.keyword { color: #c678dd; }
.property { color: #e06c75; }
.string { color: #98c379; }

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
}

.section-title span {
    color: var(--primary);
}

/* About */
.about {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 30px;
    margin: 30px;
    padding: 60px;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    margin-bottom: 15px;
    opacity: 0.9;
}

.stats {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.skill-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s;
}

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

.skill-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.skill-card h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tags span {
    background: rgba(99, 102, 241, 0.2);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.project-image {
    font-size: 4rem;
    text-align: center;
    padding: 30px;
    background: rgba(99, 102, 241, 0.1);
}

.project-content {
    padding: 25px;
}

.project-content h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.project-content p {
    color: var(--gray);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.project-tags span {
    background: var(--primary);
    padding: 3px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
}

.project-link {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 600;
}

.project-link:hover {
    text-decoration: underline;
}

/* Contact */
.contact {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 30px;
    margin: 30px;
    padding: 60px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.contact-info > p {
    opacity: 0.9;
    margin-bottom: 25px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.1rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.8);
    color: white;
    font-size: 1rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about, .contact {
        margin: 15px;
        padding: 30px;
    }
    
    .section-title {
        font-size: 2rem;
    }
}