* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    text-align: center;
    background: #fff;
    padding: 3rem 4rem;
    border-radius: 12px;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
    max-width: 500px;
    width: 90%;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.subtitle {
    font-size: 1rem;
    color: #666;
    margin-bottom: 2rem;
}

.ms-login-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background-color: #2f2f2f;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.ms-login-btn:hover {
    background-color: #444;
}

.ms-login-btn svg {
    width: 20px;
    height: 20px;
}

.welcome-message {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: #1a1a1a;
}

.welcome-message span {
    font-weight: 600;
    color: #0078d4;
}

.sign-out-btn {
    padding: 10px 20px;
    background-color: #e5e5e5;
    color: #333;
    border: none;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.sign-out-btn:hover {
    background-color: #d0d0d0;
}

#signed-in-view {
    display: none;
}