:root {
    --primary-color: #4f46e5;
    --secondary-color: #7c3aed;
}

body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 10px;
    padding: 10px 25px;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.survey-card {
    border-left: 4px solid var(--primary-color);
}

.question-box {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid #e9ecef;
}

.option-row {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 10px 15px;
    margin-bottom: 8px;
}

.footer {
    margin-top: 50px;
    padding: 30px 0;
    background: #fff;
    border-top: 1px solid #e9ecef;
}

.alert {
    border-radius: 10px;
}

.form-control,
.form-select {
    border-radius: 10px;
    border: 1px solid #dee2e6;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(79, 70, 229, 0.25);
}

.stats-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    text-align: center;
}