:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --accent-color: #ff6b35;
    --accent-hover: #e55a2b;
    
    --fs-small: 14px;
    --fs-normal: 16px;
    --fs-medium: 20px;
    --fs-large: 28px;
    --fs-xlarge: 42px;
    
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 32px;
    --spacing-lg: 64px;
    --spacing-xl: 80px;
}

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

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.header-text {
    flex: 1;
}

.header-image {
    flex: 1;
    text-align: center;
}

.header-image img {
    max-width: 300px;
    border-radius: 50%;
    border: 4px solid var(--accent-color);
}

h1 {
    font-size: var(--fs-xlarge);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(45deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: var(--fs-medium);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.description {
    font-size: var(--fs-normal);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.btn {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
    font-weight: bold;
}

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

section {
    padding: var(--spacing-lg) 0;
}

h2 {
    font-size: var(--fs-large);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.tech-item {
    background-color: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s;
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.project-card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    width: 100%;
    height: 200px;
    background-color: #2a2a2a;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.project-info {
    padding: var(--spacing-sm);
}

.project-title {
    font-size: var(--fs-medium);
    margin-bottom: var(--spacing-xs);
}

.project-description {
    color: var(--text-secondary);
    font-size: var(--fs-small);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    overflow-y: auto;
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: var(--spacing-md) auto;
    padding: var(--spacing-md);
    border-radius: 8px;
    max-width: 800px;
    position: relative;
}

.close-modal {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    font-size: var(--fs-large);
    cursor: pointer;
    color: var(--text-secondary);
}

.project-details {
    margin-top: var(--spacing-md);
}

@media (max-width: 768px) {
    :root {
        --fs-xlarge: 32px;
        --fs-large: 24px;
        --fs-medium: 18px;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .tech-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

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

    .modal-content {
        margin: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
}