header {
    text-align: center;
    padding: 20px 0 10px 0;
    background: #ffffff;
    border-bottom: 2px solid #e0e0e0;
}

header h1 {
    font-size: 28px;
    margin: 0 0 12px 0;
    font-weight: 600;
    color: #333;
}


nav {
    width: 100%;
    display: flex;
    justify-content: center;
    background: #1a73e8;
    padding: 10px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}


.nav-container {
    display: flex;
    gap: 12px;
    padding: 0;
    margin: 0;
}


nav button {
    padding: 10px 16px;
    background: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: .25s ease;
}


nav button:hover {
    background: #e8f0ff;
    transform: translateY(-2px);
}


.adminButton { display: none; }
.adminButton.active { display: inline-block; }
.userButton { display: none; }
.userButton.active { display: inline-block; }