:root {
    --primary: #2c3e50;
    --accent: #3498db;
    --text: #333;
    --background: #f8f9fa;
    --success: #2ecc71;
    --warning: #f1c40f;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    line-height: 1.6;
    background: var(--background);
    color: var(--text);
    padding: 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* Header Section */
.header-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    align-items: start;
    border-bottom: 3px solid var(--primary);
    padding-bottom: 2rem;
    margin-bottom: 2rem;
}

.profile-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.qr-code {
    width: 120px;
    margin-top: 1rem;
    display: block;
}

/* Learning Labs */
.learning-labs {
    margin: 3rem 0;
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1.5rem;
}

.lab-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.lab-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.lab-progress {
    background: #f0f0f0;
    border-radius: 4px;
    height: 8px;
    margin: 1rem 0;
    position: relative;
}

.progress-bar {
    background: var(--success);
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}

.lab-progress span {
    position: absolute;
    right: 0;
    top: -20px;
    font-size: 0.9em;
    color: var(--primary);
}

.lab-link {
    display: inline-block;
    color: var(--accent);
    text-decoration: none;
    margin-top: 1rem;
    font-weight: 500;
}

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

/* Skills Chart */
.skills-evolution {
    margin: 3rem 0;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 8px;
}

/* Collaboration Section */
blockquote {
    border-left: 4px solid var(--accent);
    padding-left: 1.5rem;
    margin: 2rem 0;
    color: #666;
}

blockquote footer {
    margin-top: 1rem;
    font-style: italic;
    color: var(--primary);
}

/* Print Styles */
@media print {
    .container {
        box-shadow: none;
        padding: 0;
    }
    
    .lab-link, .qr-code {
        display: none;
    }
    
    blockquote {
        border-left-width: 2px;
    }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .header-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .profile-img {
        margin: 0 auto;
    }
    
    .lab-grid {
        grid-template-columns: 1fr;
    }
}