/* General Body Styles */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background-color: #F3F4F6; /* M3 Surface color */
    color: #1C1B1F; /* M3 On-Surface color */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* Login Container */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

/* Login Card */
.login-card {
    width: 100%;
    max-width: 380px;
    padding: 40px 32px;
    background-color: #FFFFFF; /* M3 Surface */
    border-radius: 16px;
    border: 1px solid #CAC4D0; /* M3 Outline */
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    /* Replaced text-align with flexbox for robust centering */
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo {
    height: 50px;
    margin-bottom: 16px;
}

.title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1C1B1F;
}

.subtitle {
    font-size: 16px;
    font-weight: 400;
    color: #49454F; /* M3 On-Surface-Variant */
    margin-bottom: 32px;
}

/* Microsoft Login Button */
.ms-login-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: auto; /* Changed from 100% to allow centering */
    padding: 10px 24px;
    background-color: #6750A4; /* M3 Primary */
    color: #FFFFFF; /* M3 On-Primary */
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: 20px; /* Fully rounded */
    box-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.ms-login-button:hover {
    background-color: #5A4594;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
}

.ms-icon {
    height: 18px;
    width: 18px;
}