:root {
    --bg-color: #0a0a0a;
    --surface-color: #1a1a1a;
    --surface-hover: #252525;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --accent-color: #8b5cf6;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --border-color: #333333;
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s ease;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

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

.section {
    padding: 5rem 0;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-secondary);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(139, 92, 246, 0.1), transparent 40%);
}

.hero-content {
    max-width: 800px;
}

.hero-tagline {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    display: block;
}

/* About Section */
.about-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 0 0 300px;
    display: flex;
    justify-content: center;
}

.about-image img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--surface-color);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
    transition: var(--transition);
}

.about-image img:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

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

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-outline {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-primary);
    margin-left: 1rem;
}

.btn-outline:hover {
    border-color: var(--text-primary);
    background: var(--surface-color);
}

.hero-btns {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.service-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

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

.portfolio-item {
    background: var(--surface-color);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.portfolio-preview {
    height: 200px;
    background: var(--surface-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.portfolio-content {
    padding: 1.5rem;
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.contact-info-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--surface-color);
    border-radius: 12px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    margin-right: 1rem;
}

/* Footer */
footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-secondary);
    margin-top: 5rem;
}

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

    h2 {
        font-size: 2rem;
    }

    .container {
        padding: 0 1.5rem;
    }

    .section {
        padding: 3rem 0;
    }

    .hero {
        min-height: 90vh;
    }

    .nav-links {
        display: none;
        /* Mobile menu to be implemented */
    }

    .btn {
        width: 100%;
        text-align: center;
        margin-left: 0 !important;
    }

    .hero-btns {
        flex-direction: column;
        gap: 0.75rem;
    }

    .about-content {
        flex-direction: column-reverse;
        gap: 2rem;
        text-align: center;
    }

    .about-image {
        flex: 0 0 auto;
    }

    .about-image img {
        width: 200px;
        height: 200px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}