/* Neural Nations - Unified CSS Stylesheet */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-logo {
    color: white;
    text-decoration: none;
    font-size: 1.5em;
    font-weight: bold;
}

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

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.nav-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    color: white;
    background: rgba(255, 255, 255, 0.2);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

/* Typography */
h1 {
    color: #2c3e50;
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 10px;
}

h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

h3 {
    color: #34495e;
    margin-bottom: 15px;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 2rem;
}

.hero-subtitle {
    color: #7f8c8d;
    font-size: 1.2em;
    margin-bottom: 0;
}

.subtitle {
    text-align: center;
    color: #7f8c8d;
    font-size: 1.2em;
    margin-bottom: 30px;
}

/* Researcher Info */
.researcher-info {
    text-align: center;
    background: rgba(52, 73, 94, 0.1);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
}

.researcher-name {
    font-size: 1.4em;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 5px;
}

.researcher-email {
    color: #3498db;
    font-size: 1.1em;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature {
    text-align: center;
    padding: 20px;
}

/* Buttons */
.btn, .btn-primary, .btn-secondary {
    display: inline-block;
    background: #3498db;
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    margin: 10px;
    border: none;
    cursor: pointer;
}

.btn:hover, .btn-primary:hover, .btn-secondary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #95a5a6;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 50px;
    color: rgba(255, 255, 255, 0.7);
    padding: 2rem 0;
}

/* Lists */
ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

ul li:before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #3498db;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .card {
        padding: 20px;
        margin-bottom: 20px;
    }
}