:root {
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.2);
    --card-bg: #1e293b;
    --card-hover: #334155;
    --nav-bg: rgba(15, 23, 42, 0.8);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--text-primary);
}

a {
    text-decoration: none;
    color: inherit;
}

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

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

/* Highlight */
.highlight {
    color: var(--accent-color);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: var(--nav-bg);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

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

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

.nav-links a {
    font-weight: 500;
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    text-align: center;
}

.greeting {
    font-size: 1.25rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 1rem;
    display: block;
}

.name {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.role {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.tagline {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
}

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

/* Hero Visual Background */
.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    opacity: 0.1; /* Subtle */
}

.circle {
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
    filter: blur(80px);
}

/* About Section */
.about-grid {
    display: flex;
    justify-content: center;
    text-align: center;
}

.about-text {
    max-width: 700px;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.about-text p {
    margin-bottom: 1.5rem;
}

.skills-list {
    display: flex;
    justify-content: center;
    gap: 1rem;
    list-style: none;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.skills-list li {
    background: var(--card-bg);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: var(--accent-color);
}

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

.project-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.05);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.project-image {
    height: 200px;
    background-color: #334155; /* Placeholder color */
    background-image: linear-gradient(45deg, #334155 25%, #475569 25%, #475569 50%, #334155 50%, #334155 75%, #475569 75%, #475569 100%);
    background-size: 20px 20px;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.project-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    min-height: 3em; 
}

.tech-stack {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tech-stack span {
    font-size: 0.75rem;
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent-color);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
}

.link-item {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: underline;
    text-decoration-color: var(--accent-color);
}

/* Contact Section */
.contact-text {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    justify-content: center;
}

.contact-btn {
    display: inline-block;
    padding: 1rem 3rem;
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }

    .nav-links {
        display: none; /* Mobile menu logic needed in JS */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--nav-bg);
        flex-direction: column;
        padding: 2rem;
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
    }

    .hamburger .bar {
        display: block;
        width: 25px;
        height: 3px;
        margin: 5px auto;
        background-color: var(--text-primary);
        transition: var(--transition);
    }

    .name {
        font-size: 2.5rem;
    }

    .role {
        font-size: 1.5rem;
    }
}