body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: url('background.jpg') no-repeat center center fixed;
    background-size: cover;
    min-height: 100vh;
}
.center-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.welcome-container {
    background: none;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    text-align: center;
}
.user-icon {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: #e3eafc;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem auto;
}
.user-icon svg {
    width: 70px;
    height: 70px;
    fill: #1976d2;
}
.login-btn {
    background: #1976d2;
    color: #fff;
    border: none;
    padding: 1rem 3rem;
    border-radius: 10px;
    font-size: 1.3rem;
    font-weight: bold;
    cursor: pointer;
    margin-top: 2rem;
    transition: background 0.2s;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.08);
    text-decoration: none;
    display: inline-block;
}
.login-btn:hover {
    background: #125ea2;
}
/* Role selection styles */
.role-container {
    position: relative;
}
.role-title {
    color: #fff;
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 2.5rem;
    margin-top: 0;
    letter-spacing: 2px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.18);
}
.roles {
    display: flex;
    gap: 3rem;
    justify-content: center;
    margin-bottom: 2rem;
}
.role-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    outline: none;
    text-decoration: none;
}
.role-icon {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(255,255,255,0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.2rem;
    box-shadow: 0 4px 24px rgba(0,0,0,0.10);
    transition: transform 0.2s, box-shadow 0.2s;
}
.role-btn:hover .role-icon {
    transform: scale(1.05);
    box-shadow: 0 8px 32px rgba(25, 118, 210, 0.18);
}
.role-label {
    font-size: 2rem;
    font-weight: bold;
    color: #fff;
    background: rgba(25, 118, 210, 0.8);
    border: 3px solid #fff;
    border-radius: 30px;
    padding: 0.3em 1.5em;
    margin-top: 0.2em;
    letter-spacing: 1px;
    box-shadow: 0 2px 8px rgba(25, 118, 210, 0.08);
}
.guest-link {
    position: absolute;
    right: 2.5rem;
    bottom: 2.5rem;
    color: #0a1833;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    letter-spacing: 1px;
    opacity: 0.85;
}
.guest-link:hover {
    text-decoration: underline;
    opacity: 1;
}
/* Responsive */
@media (max-width: 1100px) {
    .roles {
        flex-direction: column;
        gap: 2rem;
    }
    .role-title {
        font-size: 2.2rem;
    }
}