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

html, body {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-container {
    width: 100%;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 50%, #084298 100%);
    padding: 15px;
}

.login-card {
    width: 420px;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.login-header {
    background: #fff;
    padding: 40px 40px 20px;
    text-align: center;
}

.login-icon {
    font-size: 48px;
    color: #0d6efd;
    display: block;
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.login-body {
    padding: 20px 40px 30px;
    text-align: center;
}

.login-subtitle {
    font-size: 14px;
    color: #666;
    margin-bottom: 30px;
}

.microsoft-signin-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: #2f2f2f;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 12px 24px;
    font-size: 15px;
    font-family: 'Segoe UI', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    width: 100%;
    justify-content: center;
}

.microsoft-signin-btn:hover {
    background: #3b3b3b;
}

.microsoft-signin-btn:active {
    background: #1a1a1a;
}

.microsoft-signin-btn svg {
    flex-shrink: 0;
}

.login-footer {
    padding: 16px 40px;
    text-align: center;
    border-top: 1px solid #eee;
    color: #999;
}

.login-footer small {
    font-size: 12px;
}