body {
    margin: 0;
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    background: linear-gradient(135deg, #c3ecff, #fceabb);

    font-family: 'Rubik', sans-serif;
}

.role-select {
    text-align: center;
}

.welcome-title {
    font-size: 52px;
    font-weight: 900;

    color: #2e7d32;

    margin-bottom: 40px;
}

.role-cards {
    display: flex;
    gap: 30px;
}

.role-card {
    width: 280px;

    background: white;

    border-radius: 24px;

    padding: 35px 25px;

    text-decoration: none;

    color: #333;

    box-shadow: 0 10px 30px rgba(0,0,0,0.12);

    transition: 0.25s;
}

.role-card:hover {
    transform: translateY(-8px) scale(1.03);
}

.role-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.role-name {
    font-size: 28px;
    font-weight: 800;

    margin-bottom: 12px;
}

.role-desc {
    font-size: 16px;
    line-height: 1.4;

    color: #666;
}

.role-card.student {
    border-top: 8px solid #66bb6a;
}

.role-card.teacher {
    border-top: 8px solid #ffb300;
}