:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    margin-bottom: 30px;
}

.features .card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.features .card:hover {
    transform: translateY(-10px);
}

.nation-card {
    border-radius: 10px;
    border-left: 5px solid var(--primary-color);
}

.card {
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.btn {
    border-radius: 8px;
    padding: 10px 20px;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.form-control, .form-select {
    border-radius: 8px;
    border: 2px solid #e0e0e0;
    padding: 10px 15px;
}