:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --primary-color: #38bdf8;
    --secondary-color: #818cf8;
    --accent-color: #c084fc;
    --card-bg: rgba(30, 41, 59, 0.7);
    --nav-bg: rgba(15, 23, 42, 0.8);
    --border-color: rgba(148, 163, 184, 0.1);
    --gradient-text: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    --font-main: 'Outfit', sans-serif;
}

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

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

/* Background Gradients */
.background-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(129, 140, 248, 0.1) 0%, transparent 40%);
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-decoration: none;
}

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

nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-text);
    transition: width 0.3s ease;
}

nav a:hover::after,
nav a.active::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    padding: 0 10%;
    position: relative;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.hero h1 span {
    display: block;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: #94a3b8;
    max-width: 600px;
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--gradient-text);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px rgba(56, 189, 248, 0.5);
}

/* Section Common Styles */
section {
    padding: 6rem 10%;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 4px;
    background: var(--gradient-text);
    border-radius: 2px;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: #cbd5e1;
}

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

.project-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.project-image {
    height: 200px;
    background: linear-gradient(45deg, #1e293b, #334155);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.project-info p {
    color: #94a3b8;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.project-link:hover {
    border-color: var(--text-color);
}

/* CV Selection */
.cv-options {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.cv-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    text-align: center;
    flex: 1;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: var(--text-color);
    display: block;
}

.cv-card:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: var(--primary-color);
}

.cv-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: #64748b;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

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

    nav ul {
        display: none;
        /* Mobile menu implementation usually requires JS toggle */
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    section {
        padding: 4rem 5%;
    }
}